CN1279279C - Starter, start control device, and crank angle detector of internal combustion engine - Google Patents

Abstract

A start control device of an internal combustion engine capable of realizing a more efficient start control of the engine by recognizing the absolute angle of an engine crank shaft, wherein the absolute angle of the crankshaft (13) is calculated based on the ignition reference signal of the engine and the commutation position pulse signal of a starter motor (10) and the starter motor (10) is controlled based on the absolute angle. The starter motor (10) is rotated reversely based on the calculated absolute angle, and rotated forwardly to start the engine after the crankshaft (13) is temporarily rotated reversely to an expansion stroke, whereby, because the timing of the crankshaft (13) from reverse to forward rotation is controlled accurately by the absolute angle to enable an efficient engine start control, an efficient inertia start control can be realized, and the absolute angle of the crankshaft (13) of the engine can be recognized accurately by a crank angle detector without increasing the number of reluctors (40).

Description

The starting arrangement of internal-combustion engine

Technical field

The present invention relates to start the ignitor of IC engine of the internal-combustion engine that is applicable to motorcycle or automobile etc. and the start-control device of internal-combustion engine.The present invention relates to be applicable to the crank angle detector of the internal-combustion engine of motorcycle or automobile etc. again.

Background technique

When piloting engine (internal-combustion engine), in order to suck, compression and ignite the mixed gas of fuel must make crankshaft rotating up to keeping desired rotation by external force, in order to pilot engine, can be starter as the starting arrangement of driving source with battery.

In existing starter, exist the form and form motor is direct and that bent axle couples together that the rotation of motor are passed to the rotation that reaches bent axle by reducing gear.Make by reducing gear in the form of crankshaft rotating, one side makes pinion and the annular gear wheel interlock that is arranged on the flywheel periphery of motor, one side makes pinion move forward and backward along motor drive shaft, pinion and annular gear wheel interlock are slowed down rotating force are pass on to bent axle during starting, break away from interlock behind the proceed-to-send and get back to the origin-location.

Usually, when motor is stopped, after the bent axle inertia rotation, after the compression load in the engine compresses stroke plays a part brake rotation is stopped, because the reversing motion that compression causes is returned to contrary direction slightly, near the situation of lower dead centre that stops at compression stroke is a lot.So when piloting engine, the situation that begins to rotate near the position bent axle the lower dead centre of compression stroke is a lot.

So, the situation of turning crankshaft for crankshaft rotating is started, because from begin the rotation after immediately compression load is added on the bent axle, so be difficult to improve the rotational speed of bent axle, on the position of when compression counter-force maximum, the electric current when starter motor flows through approach locking.Thereby,, can produce the capacity of crossing the big torque lock of torque than this so starter motor must have because the torque of Chan Shenging at this moment almost equates to cross upper dead center with torque lock.

Particularly, in will not having reducing gear and the situation of the ACG motor direct-connected form of bent axle, exist and to produce big torque lock, must use the such problem of motor of large-scale costliness as starter motor.Further, when using magnet in magnetic field, one side needs strong magnetic field, and the rotation when one side is carried out work as ACG is resisted and become big, exists to cause fuel consumption to descend and the such problem of motor output decline.

Again, generally, motor (internal-combustion engine) is by sucking, compression, igniting, a succession of strokes such as outburst and eliminating fuel mix gas make crankshaft rotating obtain output, therefore, for to ignition timing with the timing etc. of opening threshold gate is controlled or the engine revolution number is monitored etc. to have the signal that becomes its benchmark.And, in most of motors, adopt by (Japanese: the signal generator that iron thrust リ ラ Network ) and pulsed coil constitute obtains pulse signal, with its formation as reference signal by being called axle journal.

In this motor, on institute's fixed position of the solid of rotation that rotates with bent axle of rotor of flywheel and starter motor etc., form axle journal (Japanese: リ ラ Network ).Again, on the other hand, pulsed coil is set in stator (stator) side, at it nearby by disposing axle journal (reluctor) like that.And, the pivot journal that is accompanied by bent axle from pulsed coil nearby by the time since it near and leave and in pulsed coil, produce the electrical signal output pulse signal.

At this moment because pulse signal always the output of fixed crank shaft angle, so with it as the igniting reference signal, realize the control of ignition timing.Again, the formation that forms 1 above-mentioned axle journal on solid of rotation has become main flow, and at this moment, output pulse signal of crankshaft rotating once.So, can calculate the rotation number of motor according to the interval of this pulse signal, implement the various processing of control fuel injection amount etc. with this value of calculating.

, in recent years, be accompanied by the high performance of motor, its control form also becomes complicated, also will the change of the rotation number between 1 rotation of bent axle be monitored, needs corresponding therewith refined control.Therefore, the number of above-mentioned axle journal is increased,, realize the more purpose of high performance of control thereby can arrive with littler angle intervals output pulse signal.

But when increasing the number of axle journal in this wise, corresponding therewith machining period number increases, if want to carry out precision control by increasing axle journal, then exists the problem that correspondingly increases cost therewith.

The objective of the invention is absolute angle, realize more high efficiency engine start control by the understanding engine crankshaft.Again, the purpose of this invention is to provide the number that does not increase axle journal, can correctly be familiar with the crank angle detector of the absolute angle of engine crankshaft.

Can recognize above-mentioned and other purpose and new feature of the present invention from the record of this specification and accompanying drawing.

Summary of the invention

The feature of the starting arrangement of internal-combustion engine of the present invention is that it has the starter motor that links with the bent axle of internal-combustion engine, with the absolute angle that obtains bent axle according to the igniting reference signal in the above-mentioned internal-combustion engine and rotational pulse signal, the control gear of above-mentioned starter motor being controlled according to above-mentioned absolute angle.

Again, the starting arrangement of internal-combustion engine of the present invention, its feature is that it has the starter motor that links with the bent axle of internal-combustion engine, obtain the absolute angle of bent axle with the commutation position pulse signal of the above-mentioned starter motor that detects according to the igniting reference signal of above-mentioned internal-combustion engine and rotational pulse signal and by magnetic force, the control gear of above-mentioned starter motor being controlled according to above-mentioned absolute angle.

In the present invention, both deposit the absolute angle that signal is obtained bent axle, starter motor is controlled according to this absolute angle with what be called igniting reference signal and commutation position pulse signal.Thereby, do not need further to set up crankshaft angle sensor etc., can carry out correct starting control with the absolute angle of bent axle, thereby can realize high efficiency engine start.

At this moment, above-mentioned control gear also can temporarily reverse and just change the above-mentioned internal-combustion engine of energising starting after energising makes above-mentioned bent axle crank position that arrival is decided according to above-mentioned absolute angle.Therefore, the timing of the reverse of bent axle → just changeing can be correctly controlled,, high efficiency inertia starting control can be carried out by there not being the engine start control of waste.

At this moment, also can with above-mentioned just changeing the energising amount detect above-mentioned bent axle whether arrive decide crank shaft angle position, again, also can detect above-mentioned bent axle and whether begin just to change with the above-mentioned energising amount of just changeing.

Further, when above-mentioned internal-combustion engine is 2 two-stroke engines, except above-mentioned igniting reference signal, the axle journal or the pulsed coil that produce the 2nd reference signal can be set also.

In addition, above-mentioned control gear also can be when waiting signal etc. stops idle running, during restarting after above-mentioned internal-combustion engine stops when making STOP (stopping) that motor restarts and GO (advancing) work when dispatching a car, at least when deciding revolution is following, be familiar with above-mentioned absolute angle from above-mentioned internal-combustion engine, above-mentioned absolute angle after stopping when restarting according to above-mentioned internal-combustion engine, the temporary transient reverse just changeed the above-mentioned internal-combustion engine of energising starting after energising makes above-mentioned bent axle crank position that arrival is decided.

Again, when above-mentioned control gear also can stop after above-mentioned internal-combustion engine is crossed compression stroke, when starting next time, the above-mentioned absolute angle that obtains before stopping according to above-mentioned internal-combustion engine temporarily reverses energising and makes above-mentioned bent axle arrive institute decide just changeing to switch on behind the crank position to start above-mentioned internal-combustion engine.

Further, above-mentioned control gear also can make the position preparation rotation of above-mentioned bent axle from igniting reference signal occurrence positions to positive veer one side before above-mentioned reverse.Therefore, when bent axle reverses, must can positively obtain the igniting reference signal by igniting reference signal occurrence positions.

In addition, above-mentioned control gear also can be adjusted the reverse energising end position and the positive turn-off beginning position of above-mentioned bent axle according at least one side in cell voltage and the engine temperature, therefore, can carry out meticulousr starting control according to battery and engine condition, can arrive the purpose that shortens the starting time.

On the other hand, starting controller for internal combustion engine of the present invention is the starting controller for internal combustion engine that carries out the drive controlling of the starter motor that links with I. C. engine crankshaft, its feature is the igniting reference signal acquisition device that it has the igniting reference signal that obtains in the above-mentioned internal-combustion engine, obtain the commutation position pulse signal acquisition device of the commutation position pulse signal of above-mentioned starter motor, according to above-mentioned igniting reference signal and above-mentioned commutation position pulse signal, calculate above-mentioned bent axle absolute angle the absolute angle calculating apparatus and control the motor control indicating device of above-mentioned starter motor according to the above-mentioned absolute angle of calculating.

And in control gear of the present invention, because both deposit the absolute angle that signal is obtained bent axle with what be called igniting reference signal and commutation position pulse signal, absolute angle control starter motor according to bent axle, so do not need further to set up crankshaft angle sensor etc., can carry out correct starting control with the absolute angle of bent axle, thereby can realize high efficiency engine start.

At this moment, said motor control indicating device also can be according to above-mentioned absolute angle, temporarily reverses energising and makes above-mentioned bent axle arrive institute to decide crank position, detect above-mentioned bent axle arrival decide crank shaft angle position after, perhaps, detect and just changeing energising after above-mentioned bent axle begins just to change.

Again, above-mentioned start-control device further has the battery voltage detector of detection cell voltage and the engine temperature detection device of detection of engine temperature, said motor control indicating device also can be controlled above-mentioned starter motor according at least one side in above-mentioned cell voltage and the engine temperature and above-mentioned absolute angle, therefore, can carry out meticulousr starting control according to battery and engine condition, can arrive the purpose that shortens the starting time.

In addition, said here just the commentaries on classics refers to the regular sense of rotation of motor, reverses to refer to the sense of rotation opposite with regular sense of rotation.

The crank angle detector of internal-combustion engine of the present invention is the crank angle detector by the internal-combustion engine of the started with no brush device motor starting that links with bent axle, its feature is that it has the axle journal that forms on the solid of rotation that is arranged on the above-mentioned bent axle, near being accompanied by of above-mentioned solid of rotation configuration by above-mentioned axle journal, produce the reference signal generator of electrical signal in deciding crank shaft angle, be accompanied by the rotation of above-mentioned starter motor, generation is used to control the commutation position signal occurrence device of the commutation position signal of above-mentioned starter motor, according to above-mentioned commutation position signal, the angle pulse that formation has an angle pulse of institute's fixed cycle forms device and according to the crankshaft angles calculating apparatus of the absolute angle of calculating above-mentioned bent axle from the electrical signal and the above-mentioned angle pulse of said reference signal occurrence device.

In the present invention, can be according to calculating the absolute angle of bent axle from the electrical signal of reference signal generator with by the angle pulse that the commutation position signal forms.Therefore, do not need to set up axle journal and set up crankshaft angle sensor etc. and just can grasp present crank shaft angle, can realize high-precision engine control according to crank shaft angle.So, can not cause that cost rises, and can realize high performance engine control owing to the machining period number increases with number of components increase etc.

At this moment,, also can therefore can apply flexibly the signal of both having deposited, can arrive and suppress the purpose that cost rises with the device of output for the igniting reference signal of the ignition timing that determines above-mentioned internal-combustion engine as the said reference signal occurrence device.

Again, above-mentioned commutation position signal occurrence device output is by the heterogeneous pulse signal that constitutes, above-mentioned angle pulse forms device makes institute's fixed cycle according to the variation of above-mentioned multiphase pulse signal angle pulse signal, above-mentioned crankshaft angles calculating apparatus also can be calculated the absolute angle of above-mentioned bent axle by beginning above-mentioned angle pulse is counted from the electrical signal of input from the said reference signal occurrence device.

Description of drawings

Fig. 1 is the sectional view of formation of the starter motor of the expression engine starting gear that is applicable to example 1 of the present invention.

Fig. 2 is the omission shell of starter motor of Fig. 1 and the front elevation of lid.

Fig. 3 is the skeleton diagram of formation of control system of the starter motor of presentation graphs 1.

Fig. 4 is expression about the explanatory drawing of the formation of the functional device of the starting control among the CPU of the starter motor control that is applicable to Fig. 1.

Fig. 5 is the plotted curve of the engine start operation in the expression example 1 of the present invention, (a) represent starting load in each stroke, (b) expression start-up energy, piston position when (c) the expression starting is moved, (d) expression (e) is represented camshaft signal from the pulse signal of commutation position detecting sensor.

Fig. 6 is the program operation chart of the engine start control sequence in the expression example 1 of the present invention.

Fig. 7 is the program operation chart of the engine start control sequence in the expression example 1 of the present invention.

Fig. 8 is the explanatory drawing of expression commutation position pulse signal and igniting reference signal relation.

Fig. 9 is the plotted curve of the engine start operation in the expression example 2 of the present invention, (a) represent starting load in each stroke, (b) expression start-up energy, piston position when (c) the expression starting is moved, (d) expression (e) is represented camshaft signal from the pulse signal of commutation position detecting sensor.

Figure 10 is the program operation chart of the engine start control sequence in the expression example 2 of the present invention.

Figure 11 is that the program operation chart of processing sequence is just being changeed in the preparation in the expression example 2 of the present invention.

Figure 12 is the table of the controlling party case in the expression start-control device of the present invention.

Figure 13 is expression detects the formation of the functional device of handling about the bent axle among the CPU a explanatory drawing.

Figure 14 is expression commutation position detecting sensor signal and the angle pulse that forms from commutation position detecting sensor signal and the explanatory drawing of the relation of igniting reference signal.

Figure 15 is expression angle pulse commutation position detecting sensor signal when being spaced apart 60 °, the explanatory drawing of relation separately of angle pulse and igniting benchmark.

Figure 16 is expression angle pulse commutation position detecting sensor signal when being spaced apart 10 °, the explanatory drawing of relation separately of angle pulse and igniting benchmark.

Figure 17 is that expression (a) is divided into the situation at 5 ° of intervals with angle pulse, (b) angle pulse is divided into the situation at 15 ° of intervals, (c) considers the explanatory drawing of the situation that the cpu load in high rotary area was adjusted the angle pulse spacing.

Embodiment

Below, we describe example of the present invention with reference to the accompanying drawings in detail.

(example 1)

Fig. 1 is the sectional view of formation of the starter motor of the expression engine starting gear that is applicable to example 1 of the present invention, Fig. 2 is the omission shell of starter motor of Fig. 1 and the front elevation of lid, and Fig. 3 is the skeleton diagram of formation of control system of the starter motor of presentation graphs 1.

The starter motor of Fig. 1 (the following motor that slightly is designated as) 10 directly links with 4 cycle engines that are used for motorcycle, the rotor (solid of rotation) 14 that has the stator 12 on the engine box 11 that is fixed on motor and link with engine crankshaft 13.

Rotor 14 has the yoke 15 of the short size drum that the end is arranged that the magnetic material with iron etc. forms, and protruding part 16 concentric shapes cylindraceous is arranged on integratedly highlightedly on the inner face of diapire of this yoke 15.Protruding part 16 and bent axle 13 combine with each conical surface that plays the chock effect, link by setting nut 17, and this rotor 14 is fixed on the bent axle 13 rotatably with bent axle 13 one.On the inner peripheral surface of yoke 15, make permanent magnets adjacent 18 polarity in a circumferential direction and fixed on the contrary with a plurality of permanent magnet 18 configurations that are used to constitute field pole.

The stator 12 of motor 10 has with magnetic materials such as iron and forms the roughly fuse 19 of the short size disc-shape of star.By as the bolt 21 of concluding device fuse 19 being connected and being fixed on the outside of engine box 11 and the shell 20 that bent axle 13 disposes with one heart, again, lid 26 is installed in the outside of shell 20.And, the outside of the stator 12 in shell 20, the periphery that makes rotor 14 surround it disposes rotor 14 like that, because the driving of bent axle 13, rotor 14 is around stator 12 rotations.

Fuse 19 has and the polylith thin plate lamination that is made of magnetic material made of iron is got up to form integrated, and forms the mandrel body 22 of annular.The periphery of mandrel body 22 is provided with many outstanding electrodes 23 radially highlightedly.With stator coil 24 three-phase line ground respectively on each outstanding electrode 23, this stator coil 24 by unillustrated terminal among the figure by lead with organize electric wire (all not drawing among the figure) and be connected with motor driver 31.That is, this motor 10 constitutes the brushless motor that is driven by motor driver 31.

Again, in motor 10, a plurality of (for example 3) commutation position detecting sensors (commutation position signal occurrence device) 25 are configured in the lid 26, the rotational position of the magnetic induction detection rotor 14 by sensor-magnet 42 constitutes like that.CPU described later (start-control device) 32 supply motor drivers 31 are passed through in the output of commutation position detecting sensor 25, motor driver 31 produce with from the corresponding power on signal of the testing signal of commutation position detecting sensor 25, according to this power on signal with electric current supply stator coil 24 actuated in sequence stator coils 24.When actuated in sequence stator coil 24, form rotating magnetic field by stator coil 24.This rotating magnetic field acts on permanent magnet 18, makes rotor 14 rotation by this rotating magnetic field, and the protruding part 16 by yoke 15 conveys to bent axle 13 with the rotating force of rotor 14 and makes the motor starting.

Further, 1 axle journal 40 is arranged on highlightedly the periphery of rotor 14.Again, shell 20 1 sides and this axle journal 40 relatively set pulsed coil (reference signal generator) 41. and, bent axle 13 every rotations 1 time, axle journal 40 just by pulsed coil 41 nearby 1 time, at this moment produces electrical signal on pulsed coil 41.So this electrical signal is to take place when institute decide angle when bent axle 13 arrives, on this motor, this signal of exporting is used for control ignition period as the reference signal of lighting a fire here.That is, axle journal 40 just before compression stroke finishes (before top dead center) so can access the igniting reference signal by pulsed coil 41.In addition, in 4 cycle engines, because bent axle 13 rotates 2 times in each stroke, so this igniting reference signal also just takes place before exhaust stroke finishes.

On the other hand, motor 10 as shown in Figure 3, is driven by motor driver 31 under the control of CPU (control gear) 32.On this CPU 32, connecting commutation position detecting sensor 25, producing the pulsed coil 41 of igniting reference signal, the starter switch 34 of motor and ignition switch 39 according to the action of bent axle 13.Again, the spark coil 35 that is used for engine ignition is connected with CPU 32 by ignition mechanism 36.Further, CPU 32 and collection drive the ROM 37 of various control programs of logic and engine control etc. and the RAM 38 that collects from the data of various sensors etc. is connected about motor driver.And commutation position detecting sensor 25 and pulsed coil 41 etc. according to the checkout value and the signal of various sensors, send to motor driver 31 and ignition mechanism 36 with control signal, and motor 10 also carries out engine ignition control etc.In addition, with unillustrated on-vehicle battery drive motor 10 as power supply among the figure itself and CPU 32 etc.

Following functional device is set in CPU 32 again.Fig. 4 is the explanatory drawing of expression about the formation of the functional device of the control of the starting among the CPU 32.This CPU 32 has the igniting reference signal acquisition device 51 of obtaining the igniting reference signal of motor from pulsed coil 41, obtain the commutation position pulse signal acquisition device 52 of the commutation position pulse signal of motor 10 from commutation position detecting sensor 25, calculate the motor control indicating device 54 that the absolute angle of the absolute angle calculating apparatus 53 of absolute angle of bent axle 13 and the bent axle 13 of calculating according to absolute angle calculating apparatus 53 is controlled motor 10 as described later according to igniting reference signal and commutation position pulse signal.

Again, CPU 32 further has the on-vehicle battery voltage check device 55 of inspection vehicle live cell voltage and the engine temperature detection device 56 by cooling water temperature detection of engine temperature.

Fig. 5 is the figure of the starting principle of expression when starting arrangement of the present invention is used for 4 stroke cycle engines, (a) represent starting load in each stroke, (b) expression start-up energy, piston position when (c) the expression starting is moved, (d) expression (e) is represented the igniting reference signal from the pulse signal of commutation position detecting sensor.

This motor has opening suction valve opens the induction stroke in general who has surrendered's mixed gas sucker under the upper dead center of piston in the state of exhaust valve closure, in suction valve and outlet valve compression stroke of compressed mixed gas in the closing state all, the upper dead center that finishes in compression stroke a bit makes the mixed gas igniting in the front slightly, suction valve and outlet valve are all in the closing state, because it is explosion stroke that the pressurized gas that burning produces are pressed to following working stroke with piston, in the state of opening with suction valve closure and outlet valve, the gas that expands is discharged outside exhaust stroke, by 2 rotations of bent axle 13 promptly 4 strokes constitute 1 circulation.

In the state that motor stops, when motor 10 rotation was started, it is relevant that motor is in the position of what stroke during with starting, shown in (a), and the load difference during starting.That is, in exhaust stroke and induction stroke, because piston up-down in the state that suction valve closure and outlet valve are opened, so become smaller for the load that makes bent axle 13 rotations.Relative therewith, when making engine start in compression stroke, because all in the closing state piston is risen at suction valve and outlet valve, so the rotary load of bent axle 13 becomes greatly, this value a bit arrives maximum in place in the front slightly at upper dead center.

As mentioned above, common when motor stops, piston stops near the lower dead centre of compression stroke the position mostly.In existing starting arrangement, because pilot engine, so when starting, need supply with energy shown in dotted lines in Figure 5 to the bent axle 13 that will overcome the load in the compression stroke by starter motor from this position.

In starting arrangement of the present invention, stopping usually among the scope P shown in Fig. 5 (c), for example when stopping at the status triggering motor of stop position Pa, at first temporarily make motor reverse position through induction stroke and exhaust stroke, in explosion stroke, bent axle 13 is reversed.In this reversal procedures, piston moves in the opposite direction along the side shown in the arrow in the hurdle of going up most with Fig. 5, piston moves to upper dead center in the position of induction stroke, and piston moves to lower dead centre in the position of exhaust stroke, and piston moves to upper dead center in the position of explosion stroke.

So, because this reverses in explosion stroke, all in the closing state, make the gas compression that remains at suction valve and outlet valve the firing chamber in, in the firing chamber, put aside owing to compressing the positive rotation energy that reaction causes.Two dot dot dash are represented the gas compression energy put aside in Fig. 5 (b).In addition, when beginning to start, not only be in the situation that stops usually in the scope P, and stop in the locational state of induction stroke and exhaust stroke, when pilot engine in these positions, also can reverse action same as described abovely at piston at piston.

Bent axle 13 is in the positive turn-off beginning scope Q of explosion stroke, and for example reversing backward position is after Qa is put in positive transposition, by motor 10 bent axle 13 is just being changeed.At this moment, emit because the positive rotation energy of gas compression savings in the firing chamber, counteractive energy of this compression of emitting and the rotating energy that added by motor 10 all are added on the rotary system to the rotary system that comprises bent axle 13 such as flywheel.

In Fig. 5 (b), represent by just changeing the variation that motor 10 is added to the motor energy on the bent axle 13 with solid line, be illustrated in the variation of the inertia energy of putting aside in the rotary system with a little line, in rotary system, inertia energy is increased at the initial stage of just changeing rapidly owing to emit the compression reaction that causes by the gas energy that compresses savings, further, because the rotating force of motor 10, rotary system develops to compression stroke from explosion stroke, and inertia energy slowly increases.So, be illustrated in the synthetic energy of the energy of the inertia energy so far in rotary system, put aside in the compression stroke and motor 10 with heavy line, should synthesize energy and be added on the bent axle 13.Promptly, by the rotation number that is accompanied by bent axle 13 reduce the consumption emit in compression stroke inertia energy and the rotating torques of motor 10 bent axle 13 is driven, maximum cross the total amount that torque T can surpass the maximum of T m of the maximum of T i that emits energy of an inertia torque of load of first compression stroke and motor torque.

Fig. 6, the 7th, represent this program operation chart according to engine start control sequence of the present invention.Here, CPU 32 at first enters subroutine at step S1 by ignition switch 39 is connected, and proceeds to step S2 and judges whether starter switch 34 is connected.Then, when starter switch 34 is connected, proceed to step S3, motor is reversed.That is, motor is reversed to explosion stroke one side from stop position Pa.

Secondly, at step S4, judge whether that one side reverses motor, one side output igniting reference signal.At this moment, as mentioned above, bent axle 13 every rotations 1 time, output igniting reference signal 1 time.Therefore, when the stop position Pa of Fig. 5 reverses motor, shown in Fig. 5 (e), even if when induction stroke enters exhaust stroke, also export the igniting reference signal.And, when obtaining lighting a fire reference signal, step S4 proceeds to step S5, the absolute position of understanding piston, i.e. and the absolute angle of bent axle, and it is proofreaied and correct.

Here, in this motor 10,, obtain the commutation position pulse signal as shown in Figure 5 in order to carry out this Spin Control.Fig. 8 is the explanatory drawing of this commutation position pulse signal of expression and igniting reference signal relation.As shown in Figure 8, in motor 10, survey sensor signal U, V, W from 3 commutation position detecting sensors, the 25 output three-phase commutations that five equilibrium is provided with.And, by capturing the rise time of each signal, form the commutation position pulse signal of institute's fixed cycle.At this moment, because because axle journal 40 is exported the igniting reference signal by pulsed coil 41 fronts, so obtain its crank shaft angle always constant (before top dead center).Also obtain the commutation position pulse signal at interval in deciding crankshaft angles again.So, if after the reference signal that obtains lighting a fire, count importing several commutation position pulse signals, then know the angle of swing of deciding crank shaft angle from certain, can correctly grasp present crank shaft angle.

So after grasping the absolute angle of bent axle, proceed to step S6, judge whether that one side monitors that piston of crank shaft angle comes the explosion stroke neutral position.And, when recognizing that piston is come the explosion stroke neutral position, proceed to step S7, the reverse energising is stopped.

On the other hand, when not arriving the neutral position of explosion stroke, proceed to step S8, judge whether piston enters the reverse compressive state.That is, in reversing, bent axle before the explosion stroke neutral position, judges whether to enter the state of accepting compression load.At this moment, the judgement in the reverse compressive state of step S8 is to be undertaken by the variable quantity of catching crank shaft angle.That is, at first detect the cycle of commutation position pulse signal, value that obtains more this time and the value that last time obtained.And poor when institute's definite value is above when this, the variable quantity that the judgement piston is compressed the power crank shaft angle reduces, and judgement enters the reverse compressive state.In addition, also can calculate velocity ratio and be worth, further try to achieve acceleration this variation and institute's definite value are compared from it than this from the cycle.But as described abovely judge that from the cycle method of pseudo-acceleration change has the advantage that the burden that is added to CPU 32 is reduced.

When detecting the reverse compressive state at step S8, proceed to step S7 and stop to reverse energising.Relative therewith, when not detecting the reverse compression, proceed to step S9, judge and whether pass through the predefined maximal reversal time.And, when during the time, proceeding to step S7, stop to reverse energising through maximal reversal, ought get back to step S6 and repeat above-mentioned order also without out-of-date on the other hand.

At step S7, when stopping to reverse energising, bent axle 13 is owing to inertia rotates like this, and after this switching to is just changeing driving.In control according to the present invention, this switches from (1) bent axle 13 whether reverse reverse permission position (before the compression top dead center), whether (2) begun just to change, whether (3) stop to judge through such 3 absolute angle conditions actuation time of fixing time from energising.

Therefore, because be familiar with the absolute angle of bent axle, so, judge whether crank shaft angle arrives the maximum position (reverse and allow the position) that reverses permission at first at step S10 at step S5.And when arriving reverse permission position (Qa among Fig. 5 (c)), proceed to step S11, enter the right path starting action that bent axle 13 is just being changeed.

In addition, above-mentioned reverse allows the position also can suitably adjust according to engine temperature (water temperature, temperature, unit temp or motor temperature etc.) and cell voltage state.That is, observe engine temperature and cell voltage, setting makes the such reverse of torque of crossing that produces the best allow the position, with the corresponding starting that can realize the shortest time of state at this moment.For example, after motor is stopped, restarting immediately, when cell voltage is high and when the engine temperature height has the condition of easy starting, gets back to exhaust stroke and begin therefrom just to change.When cell voltage is low slightly and when not making engine warming up, gets back to explosion stroke and just change again.Further, when low and engine temperature is low when cell voltage, utilize the compression reaction force of explosion stroke just to change.Further again, when the lower and engine temperature of cell voltage is lower, reverse after temporarily just changeing the compression reaction force of utilizing compression stroke, start by the compression reaction force that on it, adds explosion stroke.In addition, even if do not start action itself under the condition that these actions can not start, send relevant therewith notice to the driver by warning light etc. in order to carry out in prediction.

Relative therewith, at step S10, when recognizing that not arriving reverse allows the position, proceed to step S12, whether judgement bent axle 13 has entered and has just changeed state.That is, whether judge arrive reverse allow the position before since compressive force return beginning and just change.And, if beginning is just changeed, then proceed to step S11, begin turn immediately and do.

Again, do not detect when just changeing, proceed to step S13 at step S12, judge whether pass through fixed energising stop time (for example, 100ms).That is, with fixed maximum value be set in the inertia rotational time after the reverse, when through this time, even if also proceed to step S11 before allowing the position and begin just to change arriving just changeing.In addition, when also not through this energising stop time, get back to step S10, repeat above-mentioned order.

Like this, in starting control according to the present invention, because can enough igniting reference signals and commutation position pulse signal crank shaft angle correctly, so do not need to be provided with especially in addition the sensor that detects crank shaft angle, the control that can positively reverse → just change according to the absolute angle of bent axle.Again, because reversing current"on"time and the energising stop time is set maximum value respectively, so can prevent because the reverse during starting produces the starting that institute fixes time above delays time.

On the other hand, when motor stopped, piston but for example shown in the Pb among Fig. 5 (c), when stopping near the lower dead centre of exhaust stroke, can not obtain the reference signal of lighting a fire not near the lower dead centre of compression stroke.That is, when step S4 can not obtain lighting a fire reference signal, can not above-mentionedly control according to absolute angle like that.Not talkative this situation definitely has above-mentioned many like that, in this control gear, at this moment by judging that above-mentioned pseudo-acceleration change determines just changeing regularly.

Here, when when step S4 can not obtain lighting a fire reference signal, proceed to the step 14 of Fig. 7, whether identical judgement with step S8 is in the reverse compressive state.And, when detecting the reverse compression, proceed to step S15, stop to reverse energising.On the other hand, when not being in the reverse compressive state, proceed to step S16, judge and whether pass through the predefined maximal reversal time.And, when during the time, proceeding to step S15, stop to reverse energising through maximal reversal, ought get back to step S4 and repeat above-mentioned order also without out-of-date on the other hand.

When stopping at step S15 reversing energising, bent axle 13 is owing to inertia rotates.And, proceed to step S17, whether judgement bent axle 13 has entered and has just changeed state.That is, piston judges whether bent axle 13 does not also begin just to change because compressive force is returned, and proceeds to step S18 if beginning is just being changeed and begins the turn work immediately.

Again,, proceed to step S19 when not detecting at step S17 when just changeing, judge whether pass through fixed energising stop time.And, when through energising during stop time, even if also proceed to step S18 before just changeing and begin just to change detecting.In addition, when also not stopping, getting back to step S17, repeat above-mentioned order through energising.

Then, owing to these actuating motors 10 beginnings are just changeed.At this moment, because in exhaust stroke and induction stroke, bent axle 13 rotates under low-load, so before piston entered compression stroke, motor 10 arrived the almost maximum rotation number near zero load rotation number.Thereby bent axle 13 also just is rotated with possible maximum rotation number owing to motor 10 before compression stroke, and the inertia energy of savings in the inertial mass of this rotary system also becomes maximum state, charges into compression stroke.

Therefore, bent axle 13 in the compression stroke shown in Fig. 4 (b), owing to be rotated for inertia energy (little by little line) and the synthetic energy (heavy line) of motor energy (solid line) sum.Again, shown in Fig. 4 (b), motor 10 is divided into its driving energy when advancing and gives bent axle 13 2 times when crossing.Thereby, with the motor that carries out the past that the compression stroke load crosses by 1 energy relatively, can apply flexibly motor energy expeditiously.

Like this, after crossing first compression stroke, because put aside inertia energy, so can easily cross load in after this compression stroke.And, fixed timing by propagating the cremate that produces by spark coil 35, make the starting beginning.

Like this, in the present invention, motor 10 makes piston temporarily get back to explosion stroke one side and makes engine start therefrom before piloting engine.So, can improve inertia energy that bent axle 13 holds up to crossing first compression stroke.That is, set the interval of advancing of bent axle 13, utilize the energy of savings therebetween, can be with crossing first compression stroke than little motor torque of the past.Therefore, can arrive the purpose that makes motor miniaturization and cost degradation, again, also can reduce the consumed power of motor.

Further, when making piston get back to explosion stroke one side, with the absolute position (absolute angle of bent axle) that igniting reference signal and commutation position pulse signal are grasped piston, the reverse to motor 10 stops to control with just changeing regularly according to this absolute angle.Thereby, do not need other sensor with cam-angle sensor and crankshaft angle sensor etc., can correctly reverse → just change control with the sensor of existing kind.Again, can correctly control the reverse of bent axle → just changeing regularly, can carry out more high efficiency inertia starting control according to absolute angle.

In addition, begin to cross the igniting of compression stroke, but after this when shutting down,, when starting next time, carry out the control that the reverse turn of motor 10 is done according to the absolute angle that obtains by this starting action.Therefore, can avoid the useless action of motor 10 to realize high efficiency starting.

Again, stop idle running when waiting signal etc., the restarting when when dispatching a car, making the so-called STOP of engine start and GO work after motor stops, at least when deciding revolution is following, recognize absolute angle from motor, absolute angle that also can be when stopping when motor is restarted, carry out and reverse the turn work, carry out high efficiency starting.

And, also can obtain absolute angle by the commutating pulse and the rotary pulsed of direct crankshaft rotation signals and igniting reference signal that comprises starter, starter motor is controlled.

(example 2)

Secondly, as example 2, the advance turn of row preparation of our explanation reverse action during by the starting in example 1 is done, and positively obtains the control form of igniting reference signal.

Here in the control form of example 1, as mentioned above when piston stops at the Pb position of Fig. 5,, set the switching timing of reverse → just changeing by judging the such pseudo-acceleration change of Fig. 7 of the reference signal that can not obtain lighting a fire.But, for example be box lunch when stopping at the Pb position, if the outgoing position 1 time by the igniting reference signal then obtain the reference signal of lighting a fire can be controlled with the absolute angle that bent axle revolves.Therefore, in this example, before the reverse action of example 1, just prepare and change with not crossing the such driving force of compression stroke, temporarily make piston make piston reverse action after induction stroke or compression stroke direction are just being changeed, no matter piston stops at an also output point fire reference signal surely of what position.

Fig. 9 is the figure of the starting principle in the expression example 2, (a) represent starting load in each stroke, (b) expression start-up energy, (c) piston position during expression starting action, (d) expression (e) is represented the igniting reference signal from the pulse signal of commutation position detecting sensor.Again, Figure 10 is the program operation chart of this control sequence of expression.

As shown in figure 10, in this example, CPU 32 at first enters subroutine at step S20 by ignition switch 39 is connected, and proceeds to step S21, judges whether starter switch 34 is connected.And, when connecting, starter switch 34 proceeds to step S22, and processing is just being changeed in the preparation of implementing piston is just being changeed.Figure 11 is that the program operation chart of the order of handling subroutine is just being changeed in this preparation of expression.

Just changeing in the processing at this, motor is just changeed to compression stroke one side preparation ground from stop position Pa or the Pb of Fig. 5, by judging above-mentioned pseudo-acceleration change, decision reverses the timing of switching.That is,, preparation motor 10 is just being changeed at first at step S41.At this moment turn is done, and can only make piston just enough from moving near the lower dead centre of exhaust stroke near the driving force the lower dead centre of compression stroke if having, and motor 10 also is rotated under than regular output low when just changeing starting.

Secondly, proceed to step S42, whether the judgement piston is in and is just changeing compressive state.That is, judge whether just changeing piston by the preparation of bent axle enters compression stroke and be in the state of accepting compression load.In addition, aligning the judgement of changeing compressive state at step S42 is by judging that above-mentioned pseudo-acceleration change carries out.

When detecting at step S42 when just changeing compressive state, proceed to step S43 and stop just to change energising.Just change when compression when not detecting relatively therewith, proceed to step S44, judge and whether just change the time through predefined maximum preparation.And, when just changeing the time, proceed to step S43 through maximum preparation, stop just to change energising, ought get back to step S42 and repeat above-mentioned order also without out-of-date on the other hand.

When stopping at step S43 reversing energising, break away from the program of Fig. 1 like this, the step S23 that proceeds to Figure 10 implements to reverse action.Bent axle 13 is reversed, obtain the igniting reference signal at step S42.At this moment, when beginning at step S23 to reverse action, piston be in the compression stroke or the lower dead centre of induction stroke near, when being driven to explosion stroke one side therefrom, must be by near the igniting reference signal occurrence positions the upper dead center of exhaust stroke.That is, even if for example piston stops at the such position of Pb, because temporarily make piston move to compression stroke one side, so must be by igniting reference signal occurrence positions.So can positively obtain the igniting reference signal at step S24, after, can positively grasp crank shaft angle according to this light a fire reference signal and commutation position pulse signal.

Therefore, proceed to and obtain the step S25 of igniting after the reference signal, the absolute position of understanding piston, i.e. the absolute angle of bent axle, and it is proofreaied and correct.And, later on according to this absolute angle, the control that reverses → just changeing at step S26～S33.In addition, so because the identical detailed description of omitting of the step S6～S13 in the control of step S26～S33 and the example 1 to them.

Like this, in this example, because the turn that before reversing action, temporarily prepares work, so must be by igniting reference signal occurrence positions in reversing action, positively obtain the igniting reference signal, can correctly be familiar with and control the absolute angle of bent axle.

In addition, when from igniting reference signal occurrence positions with when explosion stroke stops at the such position of Pb, obtain the reference signal of lighting a fire 2 times, but also can carry out absolute angle control with in them any one.Again at this moment, when obtaining reference signal, the just commentaries on classics that also can during this time stop immediately preparing is switched on, and moves to reverse.

(example 3)

Further, as example 3, our explanation applies the present invention to the situation of 2 two-stroke engines.In this motor 10, because have the formation of bent axle 13 every rotations 1 time output igniting reference signal 1 time, so in the situation of 2 two-stroke engines of 1 igniting of rotation 1 time, do not have reference signal, just can not carry out control as described above in the interval of advancing of inertia starting.

Therefore, in 2 two-stroke engines, except above-mentioned igniting reference signal,, can realize according to control form of the present invention by the reference signal (the 2nd reference signal) that obtains being used to be familiar with crank shaft angle for the interval signal that produces of advancing in inertia starting appends the 2nd axle journal.At this moment, the degasification stroke in cylinder is not to the position of output reference signal the lower dead centre from the mixed gas that sucks if the axle journal that appends is arranged on, even if then light a fire with this signal, the combustion event to motor does not influence yet.

In addition, also the axle journal that appends can be arranged on the position beyond above-mentioned, but at this moment, need forbid the processing of lighting a fire with the output reference signal.Again,, also can dispose a plurality of axle journals, control according to the signal that produces by these axle journals in order more critically to carry out IGNITION CONTROL.

On the other hand, replace appending axle journal, also can append pulsed coil.That is, except the pulsed coil 41 of Fig. 1, also the 2nd pulsed coil can be arranged on this non-compression stroke position of (BTDC is about 90 °～270 °) 2 reference signals of 1 output of the every rotation of bent axle.

Above-mentioned 2 pulsed coils also can be with identical coil, but at this moment, and are identical with 2 regular pulsed coils 41, also according to the pulsed coil that the appends action of lighting a fire.Near the explosion stroke lower dead centre igniting is harmless to the combustion event of motor, but has wasted ignition energy.Also can judge lower dead centre one side according to the recognition results of absolute position again.There, also can make the polarity (order of voltage change) of the pulsed coil that appends opposite, make 2 signals have different forms, it be differentiated by CPU 32 with regular pulsed coil 41.Therefore, regular ignition location igniting in addition can be suppressed, igniting that combustion event is harmful to and the waste of saving energy can be prevented.

(example 4)

Secondly, as example 4, the starter motor that our explanation is used in the motor (internal-combustion engine) that is suitable for crank angle detector.In addition, the parts identical with example 1 add identical label on the part, and omit the explanation to them.

Because the starter motor in this example 4 has and the roughly the same formation of Fig. 1～Fig. 3, so we omit the explanation to Fig. 1～Fig. 3.

In CPU 32, following such functional device is set again.Figure 13 is expression detects the formation of the functional device of handling about the bent axle in CPU 32 a explanatory drawing.In this CPU32, formation has according to igniting reference signal and angle pulse and calculates the absolute angle of bent axle, obtain the igniting reference signal acquisition device 51 of the igniting reference signal of motor from pulsed coil 41, obtain the commutation position detecting sensor signal (commutation position signal) that is used to control motor 10 from commutation position detecting sensor 25, the angle pulse that forms angle pulse described later forms device 152, according to igniting reference signal and angle pulse, calculate the crankshaft angles calculating apparatus 153 of the absolute angle of bent axle 13, with absolute angle according to the bent axle 13 of calculating by crankshaft angles calculating apparatus 153, the formation of the motor control indicating device 154 of control motor 10.

On the other hand, in this motor 10, control, obtain commutation position detecting sensor signal as shown in figure 14 for rotation to it.Figure 14 is this commutation position detecting sensor signal of expression and the angle pulse that forms from commutation position detecting sensor signal and the explanatory drawing of the relation of igniting reference signal.

As shown in figure 14, in motor 10, the commutation position detecting sensor signal U of 3 commutation position detecting sensors, the 25 output three-phases that are provided with from five equilibrium, V, W.And, by capturing the transformation period of each signal, form the angle pulse of institute's fixed cycle.In Figure 14, demonstrate commutation position detecting sensor signal U, V, the rising front of W, the appearance of the angle pulse at 20 ° of intervals of formation according to three-phase.

Here, because since axle journal 40 before pulsed coil 41 by the output reference signal of lighting a fire, so always constant (before top dead center) of crank shaft angle of the reference signal that obtains lighting a fire.That is the crank shaft angle θ of output igniting reference signal, ₀Always constant.Again, also angulation pulse in constant crankshaft angles interval (being 20 ° in Figure 14).So, at crank shaft angle θ ₀Obtain lighting a fire after the reference signal,, then know and leave crank shaft angle θ if count to importing several angle pulses ₀Angle of swing, can grasp present crank shaft angle.

So, do not need to set up axle journal 40, just can grasp crank shaft angle with 1 axle journal, can be enough 1 axle journal realize control identical when a plurality of axle journal is set, can arrive reduction and set up axle journal number in desired man-hour, the purpose that reduces cost.Again,, can correctly grasp crank shaft angle by enough sensors of both having deposited kind, also can suppress cost and rise without other sensor such as cam-angle sensor and crankshaft angle sensor.

And, according to the absolute angle of detected crank shaft angle in this wise, CPU 32 not only controls the ignition timing of motor, and implements engine starts control according to the various control programs that are collected among the ROM 37, fuel injection timing control, the various engine control of fuel injection amount control etc.

, as can be seen from fig. 14, can suitably change the angle testing precision by the cycle that changes angle pulse.Figure 15, the 16th, the expression angle pulse is respectively 60 ° at interval, the explanatory drawing of the relation of angle pulse and igniting reference signal in the time of about 10 °.

In Figure 15, in the commutation position detecting sensor signal,, begin the angulation pulse from its forward position only with 1 phase (U phase), this interval is than the length of Figure 14.Therefore, in the situation of Figure 15, crank shaft angle testing precision itself is also lower than Figure 14, but can alleviate the burden that is added on the CPU 32 with corresponding degree therewith, is effective for the control of the widely used motor that does not need such strict control etc.

Therewith relatively in the situation of Figure 16, be used for the upper edge and the lower edge angulation pulse of 3 phase signals of self-commutation position-detection sensor 25, its interval is than the weak point of Figure 14.So, relatively can improve the testing precision of crank shaft angle with the situation of Figure 14, be applicable to the motor that needs strict control with higher performance.

In addition, Figure 16 represents the situation as commutation position detecting sensor 25 with the hole IC of unipolarity detection type, and at this moment, the Duty cycle of Hi is greater than 50% in the hole IC of unipolarity detection type.Therefore, during with upper edge and lower edge angulation pulse, narrow pulse spacing and wide pulse spacing alternately take place.At this moment, as with the even cycle rolling average in (for example 2 cycles), the crank shaft angle that can carry out the equally spaced cycle is caused detects with the period measurement of angle pulse.But, if with the hole IC of bipolarity detection type as commutation position detecting sensor 25, the mobile of Duty cycle as described above reduced.

Further, also can form and suitably handle commutation position detecting sensor signal in the device 52, carry out the optimization of angle pulse at the angle pulse of CPU 32.Figure 17 (a) is in order to improve control accuracy, and the angle pulse that the change point at commutation position detecting sensor signal is physically obtained carries out frequency division to be handled, at the example of the local angulation pulse that does not have physical signalling.

In Figure 17 (a), handle carrying out frequency division with 10 ° of angle pulses that form at interval with upper edge and lower edge, form the angle pulse at 5 ° of intervals.Therefore, can angulation pulse on the non-existent position in the angle pulse at originally 10 ° of intervals, do not need to change the number of commutation position detecting sensor 25, can be by the corresponding testing precision that further improves on circuit or the software.

On the other hand, carry out such frequency division every 1 pulse and handle, also can angulation pulse in 15 ° of intervals shown in Figure 17 (b), at this moment also can angulation pulse on the non-existent position in the angle pulse at 15 ° of intervals originally.

In addition, the interval (cycle) of angle pulse shortens in the high rotary area of motor, surpass in the situation of calculation process ability etc. of CPU 32, shown in Figure 17 (c), also can adjust to the suitable pulse spacing by the angle pulse that circuit or software will physically form.In addition, in the above situation of decide rotation, also can be corresponding with 1 mutually control etc. in switching to usefulness commutation position detecting sensor signal only.

The present invention is not limited to above-mentioned example, and it is self-evident can carrying out all changes in the scope that does not break away from main idea of the present invention.

For example, in above-mentioned example 1～3, the motor of using with two-wheeled motorcycle is that example is described, but also invention can be applied to the motor that four wheeler is used.Further, the motor that also goes for not only having single cylinder but also have multi cylinder.In addition, in above-mentioned example, we with the direct-connected motor of engine crankshaft be that example is described, but not only go for direct-connected motor but also go for that class starter motor by the gear drive bent axle.Again, the kind of motor also is not limited to outer rotor-type as described above, also goes for the motor of internal rotor type.

Further, as the field pole of motor, also go for having disposed the excitation control motor of the control magnetic pole that constitutes by magnet and alternately disposed permanent magnet and the motor of the so-called hybrid type of above-mentioned control magnetic pole etc.

In addition, in above-mentioned example, connect " reverses → just changeing " or " just changeing → reverses → just change " that motors are implemented in the back at starter switch 34, but can suitably be chosen in motor and stop the time and ignition switch when connecting, any timing enforcement during the starter switch connection they.

Figure 12 represents this control mode, and mark * expression is not moved.

Again, for example, in above-mentioned example 4, we have illustrated on the rotor of motor the situation that forms axle journal, but the position that forms axle journal is not limited thereto, and also can be arranged on rotor on other bent axle and the flywheel etc.Again, in above-mentioned example, the motor of using with two-wheeled motorcycle is that example is described, but also can apply the present invention to the motor that four wheeler is used.Further, the motor that also goes for not only having single cylinder but also have multi cylinder.In addition, we have illustrated the situation that applies the present invention to 4 cycle engines, but the present invention not only can be applied to 4 cycle engines but also can be applied to 2 cycle engines.

In the start-control device of internal-combustion engine of the present invention, because obtain the absolute angle of bent axle according to light a fire reference signal and commutation position pulse signal, according to this absolute angle starter motor is controlled, thus can be enough be called igniting reference signal and commutation position pulse signal promptly deposit the SC sigmal control starter motor.Thereby, do not need to set up in addition crankshaft angle sensor etc., can carry out correct starting control according to the absolute angle of bent axle, thereby can realize high efficiency engine start.

Again, after making that bent axle is temporary transient and reverse according to absolute angle, just changeing cranking internal combustion engine, can correctly control the timing that bent axle reverse → is just changeing by making it.Thereby, can not carry out the starting control of motor lavishly, can carry out inertia starting control more expeditiously.

Further, the bent axle preparation is just changeed, therefore, when bent axle reverses, must can positively be obtained the igniting reference signal by igniting reference signal occurrence positions.

In addition, also can adjust the reverse amount of bent axle, therefore, can carry out suitable starting control, can arrive the purpose that shortens the starting time according to battery and engine condition according at least one side in cell voltage and the engine temperature.

On the other hand, in starting controller for internal combustion engine of the present invention, by having igniting reference signal acquisition device and commutation position pulse signal acquisition device, the absolute angle calculating apparatus of calculating the absolute angle of bent axle according to igniting reference signal and commutation position pulse signal, with motor control indicating device according to absolute angle control starter motor, the signal of both depositing that can enoughly be called igniting reference signal and commutation position pulse signal is obtained the absolute angle of bent axle and is controlled starter motor according to absolute angle.So, do not need to set up in addition crankshaft angle sensor etc., just can carry out correct starting control, thereby can realize high efficiency engine start according to the absolute angle of bent axle.

Again, in start-control device, battery voltage detector and engine temperature detection device further are set, motor control indicating device also can be controlled starter motor according at least one side and absolute angle in cell voltage and the engine temperature, therefore, suitable starting control can be carried out according to the state of battery and motor, the purpose that shortens the starting time can be arrived.

Further, in crank angle detector of the present invention, because can use absolute angle,, just can grasp the absolute angle of bent axle so do not need to set up axle journal and set up crankshaft angle sensor etc. from the electrical signal and the commutation position detecting sensor input bent axle of pulsed coil.Thereby, can not increase machining period number and number of components, can realize engine control according to crank shaft angle, can not cause that cost rises, and can realize high performance engine control.

And, by detect the absolute angle of bent axle with the commutating pulse of reference pulse and ACG starter, can not need to set up axle journal (be used to light a fire benchmark except) and crankshaft angle sensor etc., carry out accurate ignition timing control, EFI control and starting are controlled.

As mentioned above, the starting relevant with the present invention is applicable to that the ignitor of IC engine of internal-combustion engine of two-wheeled motorcycle or automobile etc. and the start-control device of internal-combustion engine are useful for industry, again, the crank angle detector of the internal-combustion engine that be applicable to motorcycle or automobile etc. relevant with the present invention also is useful for industry.

Claims (16)

1. the starting arrangement of internal-combustion engine, its feature is

It has the starter motor that links with the bent axle of internal-combustion engine, obtain the absolute angle of bent axle with the commutation position pulse signal of the above-mentioned starter motor that detects according to the igniting reference signal of above-mentioned internal-combustion engine and rotational pulse signal and by magnetic force, the control gear of above-mentioned starter motor being controlled according to above-mentioned absolute angle.

2. the starting arrangement of the internal-combustion engine described in claim item 1, its feature are that above-mentioned control gear reverses is just changeing energising after energising makes the temporary transient counter-rotating of above-mentioned bent axle arrive institute's fixed position, thereby starts above-mentioned internal-combustion engine.

3. in the starting arrangement of the internal-combustion engine described in claim item 2, its feature is, by detect above-mentioned bent axle arrive fixed crank shaft angle position, just changeing energising.

4. the starting arrangement of the internal-combustion engine described in claim item 2, its feature be, begins just to change by detecting above-mentioned bent axle, just changeing energising.

5. the starting arrangement of the internal-combustion engine described in claim item 1, its feature are that above-mentioned internal-combustion engine is 2 two-stroke engines, except above-mentioned igniting reference signal, the axle journal or the pulsed coil that produce the 2nd reference signal is set.

6. the starting arrangement of the internal-combustion engine described in claim item 1, its feature is, the internal-combustion engine of biding one's time such as be in and stop to dally the back when when restarting, beginning the running of internal-combustion engine when running into stopping light, above-mentioned control gear is familiar with above-mentioned absolute angle from above-mentioned internal-combustion engine at least smaller or equal to deciding revolution the time, above-mentioned absolute angle after stopping when restarting above-mentioned internal-combustion engine makes above-mentioned bent axle arrive institute by temporary transient reverse energising and decide just changeing to switch on behind the crank position to start above-mentioned internal-combustion engine.

7. the starting arrangement of the internal-combustion engine described in claim item 1, its feature is, above-mentioned control gear, in the situation that after above-mentioned internal-combustion engine is crossed compression stroke, stops, when starting next time, according to the above-mentioned absolute angle that before above-mentioned internal-combustion engine stops, obtaining, make above-mentioned bent axle arrive institute by temporary transient reverse energising and decide just changeing to switch on behind the crank position to start above-mentioned internal-combustion engine.

8. the starting arrangement of the internal-combustion engine described in claim item 1, its feature be, above-mentioned control gear, and before above-mentioned reverse, the above-mentioned bent axle of preparation rotation earlier makes it arrive the position of positive veer one side from igniting reference signal occurrence positions.

9. the starting arrangement of the internal-combustion engine described in claim item 1, its feature are that above-mentioned control gear is adjusted the reverse energising end position and the positive turn-off beginning position of above-mentioned bent axle according at least one side in cell voltage and the engine temperature.

10. the starting arrangement of the internal-combustion engine described in claim 1, its feature is that above-mentioned control gear is a start-control device, this start-control device possesses and has

Obtain the igniting reference signal acquisition device of the igniting reference signal of above-mentioned internal-combustion engine,

Obtain the commutation position pulse signal acquisition device of the commutation position pulse signal of above-mentioned starter motor,

According to above-mentioned igniting reference signal and above-mentioned commutation position pulse signal, calculate above-mentioned bent axle absolute angle the absolute angle calculating apparatus and

Control indicating device according to the motor that the above-mentioned absolute angle of calculating is controlled above-mentioned starter motor.

11. the starting arrangement of the internal-combustion engine described in claim item 10, its feature is, said motor control indicating device is according to above-mentioned absolute angle, temporarily reverses energising and makes above-mentioned bent axle arrive institute to decide crank position, detect above-mentioned bent axle arrival and decide just changeing energising after the crank shaft angle position.

12. the starting arrangement of the internal-combustion engine described in claim item 10 or 11, its feature is, said motor control indicating device is according to above-mentioned absolute angle, temporary transient reverse energising make above-mentioned bent axle arrive decide crank position, detect above-mentioned bent axle arrived one just changeing energising behind the fixed crank angle position.

13. the starting arrangement of the internal-combustion engine described in claim item 10 or 11, its feature is, above-mentioned start-control device also has the battery voltage detector of detection cell voltage and the engine temperature detection device of detection of engine temperature, and said motor control indicating device is controlled above-mentioned starter motor according at least one side in above-mentioned cell voltage and the engine temperature and above-mentioned absolute angle.

14. the starting arrangement of the internal-combustion engine described in claim 1, its feature are the crank angle detectors that it also comprises this internal-combustion engine, it is by the above-mentioned starter motor starting that links with above-mentioned bent axle, and this crank angle detector comprises,

Formation is arranged on the axle journal on the solid of rotation on the above-mentioned bent axle,

Approaching above-mentioned solid of rotation configuration, be accompanied by above-mentioned axle journal by reference signal generator at deciding crank shaft angle generation electrical signal,

Be accompanied by the rotation of above-mentioned starter motor, produce the commutation position signal occurrence device of the commutation position signal be used to control above-mentioned starter motor,

According to above-mentioned commutation position signal, the angle pulse that forms angle pulse with institute's fixed cycle form device and

Crankshaft angles calculating apparatus according to the absolute angle of calculating above-mentioned bent axle from the electrical signal and the above-mentioned angle pulse of said reference signal occurrence device.

15. the starting arrangement of the internal-combustion engine described in claim item 14, its feature be, the output of said reference signal occurrence device is used to determine the igniting reference signal of the ignition timing of above-mentioned internal-combustion engine.

16. the starting arrangement of the internal-combustion engine described in claim item 14 or 15, its feature be,

Above-mentioned commutation position signal occurrence device is exported by the heterogeneous pulse signal that constitutes,

Above-mentioned angle pulse forms device and makes the angle pulse signal with institute's fixed cycle according to above-mentioned variation by the heterogeneous pulse signal that constitutes,

Above-mentioned crankshaft angles calculating apparatus is calculated the absolute angle of above-mentioned bent axle by behind said reference signal occurrence device input electrical signal above-mentioned angle pulse being counted.

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