JP3472568B2 - Belt transmission device and belt transmission control system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt transmission device and a belt transmission control system for transmitting a rotational force using a belt when starting an engine and driving an auxiliary machine by the engine.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 8-14145 discloses a crank pulley attached to a crank shaft of an engine,
A pulley is attached to each auxiliary machine arranged around the engine and a pulley attached to the starting electric motor, and the starting electric motor starts the engine through the belt and starts the engine. After that, a belt transmission device is shown in which each auxiliary machine is driven via a belt by a crank pulley attached to the crank shaft of the engine.

[0003]

Since the conventional belt transmission device is constructed as described above, a large transmission torque is required when starting the engine through the belt, and therefore it is necessary to apply a high tension to the belt. However, even after the engine is started, a tension higher than necessary is continuously applied to the belt, which causes a problem that the belt life is significantly reduced. Further, since the belt tension is also applied to the pulleys attached to other accessories, it is necessary to increase the strength of the accessory shafts and bearings, and the support structure thereof, and the size and height of the accessories are increased. There was also the problem of causing cost increases.

The present invention has been made in order to solve the above problems, and the set tension of the auto tensioner is set to the optimum tension when the engine is started and when the auxiliary machine is driven after the start. An object of the present invention is to provide a belt transmission device and a belt transmission control system capable of appropriately controlling the belt tension by changing the belt tension.

[0005]

A belt transmission device according to a first aspect of the present invention transmits a starting power to an engine and a pulley for a rotating electric machine that is attached to a rotating electric machine that transfers the starting power to the engine. At the same time, an engine pulley that transmits the rotational power of the engine to the auxiliary machine, an auxiliary machine pulley that rotates with the power from the engine pulley to drive the auxiliary machine, a rotary electric machine pulley, an engine pulley, and an auxiliary machine The belt tension adjusting device is provided with a belt continuously wound around the pulley for belt and a belt tension adjusting device for pressing the belt to adjust the belt tension. The supported tension pulley, the spring that presses the tension pulley, the thrust shaft that moves the tension pulley, and the thrust shaft A rotating shaft of the motor for transmitting a click, those made up of the auxiliary switching mechanism which can be cut by moving the position of the thrust shaft feeding to the armature coil of the motor.

According to a second aspect of the present invention, there is provided a belt transmission device, wherein a rotary electric machine pulley mounted on a rotary electric machine for transmitting starting power to an engine, a starting power transmission to the engine, and a rotational power of the engine. To the auxiliary machine, the auxiliary machine pulley that rotates with the power from the engine pulley to drive the auxiliary machine, the rotary electric machine pulley, the engine pulley and the auxiliary machine pulley in succession. A belt tension adjusting device that adjusts the belt tension by pressing the belt around the belt and the belt tension adjusting device includes a tension pulley that is rotatably supported by the belt and is rotatably supported. , A spring that presses the tension pulley, a thrust shaft that moves the tension pulley, and an electric force that transmits torque to the thrust shaft. The rotating shaft of the machine, a switch for changing the direction of the current flowing through the armature coil of the electric motor for changing the rotating direction of the electric motor, and a relay drive circuit for interlocking the switch. .

According to a third aspect of the present invention, there is provided a belt transmission device, which includes a rotary electric machine pulley mounted on a rotary electric machine for transmitting starting power to an engine, a starting power transmission to the engine, and a rotational power of the engine. To the auxiliary machine, the auxiliary machine pulley that rotates with the power from the engine pulley to drive the auxiliary machine, the rotary electric machine pulley, the engine pulley and the auxiliary machine pulley in succession. A belt tension adjusting device that adjusts the belt tension by pressing the belt around the belt and the belt tension adjusting device includes a tension pulley that is rotatably supported by the belt and is rotatably supported. , The spring that presses the tension pulley, the thrust shaft that moves the tension pulley, and the reaction that the tension pulley receives from the belt. Those made up of a tensioner pressure sensor can detect.

A belt transmission device according to a fourth aspect of the present invention is provided with means for detecting the tensioner pressure fluctuation frequency from the tensioner pressure value detected by the tensioner pressure sensor.

A belt transmission device according to a fifth aspect of the present invention moves the thrust shaft based on the tensioner pressure or the tensioner pressure fluctuation frequency.

In the belt transmission device according to claim 6 of the present invention, the value measured by the tensioner pressure sensor is equal to or higher than the high pressure regulation value when the adjustment control for increasing the belt tension is performed at the time of engine start. Value + α% (5
% ≦ α% ≦ 40%) or less, the adjustment control is completed.

In the belt transmission device according to the seventh aspect of the present invention, the value measured by the tensioner pressure sensor is equal to or higher than the low pressure specified value when the adjustment control for decreasing the belt tension is performed after the engine is started, and the low pressure specified value is exceeded. Value + β% (5
% ≦ β% ≦ 30%) or less, the adjustment control is completed.

The belt transmission device according to the eighth aspect of the present invention changes the high pressure specified value and the low pressure specified value according to the temperature in the engine room.

In the belt transmission device according to the ninth aspect of the present invention, the tensioner pressure fluctuation amplitude ratio (pressure fluctuation width / median pressure value) obtained from the tensioner pressure value after the engine is started.
If is equal to or higher than the specified rate, the belt tension adjustment control is performed.

According to a tenth aspect of the present invention, there is provided a belt transmission device, wherein a rotary electric machine pulley mounted on a rotary electric machine for transmitting starting power to an engine, a starting power transmission to the engine, and a rotational power of the engine. To the auxiliary machine, the auxiliary machine pulley that rotates with the power from the engine pulley to drive the auxiliary machine, the rotary electric machine pulley, the engine pulley and the auxiliary machine pulley in succession. A belt tension adjusting device that adjusts the belt tension by pressing the belt around the belt and the belt tension adjusting device includes a tension pulley that is rotatably supported by the belt and is rotatably supported. , A spring that presses this tension pulley, a thrust shaft that moves the tension pulley, and a torque transmission to this thrust shaft A rotating shaft of a motor, a magnetic plate fixed to the rotating shaft, having magnetic claws protruding at equal intervals in the axial direction of the outer periphery, and a magnetic resistance element installed while facing the magnetic plate. And an electromagnetic rotation sensor having a magnet.

According to an eleventh aspect of the present invention, there is provided a belt transmission device, wherein a rotary electric machine pulley mounted on a rotary electric machine for transmitting starting power to an engine and a starting electric power transmitted to the engine and a rotational power of the engine. To the auxiliary machine, the auxiliary machine pulley that rotates with the power from the engine pulley to drive the auxiliary machine, the rotary electric machine pulley, the engine pulley and the auxiliary machine pulley in succession. A belt tension adjusting device that adjusts the belt tension by pressing the belt around the belt and the belt tension adjusting device includes a tension pulley that is rotatably supported by the belt and is rotatably supported. , A spring that presses this tension pulley, a thrust shaft that moves the tension pulley, and a torque transmission to this thrust shaft A rotary shaft of a motor, a magnetic plate fixed to the rotary shaft and having claws protruding at equal intervals in the axial direction on the outer periphery, and a magnetic plate installed opposite to the magnetic plate, and a Hall element and a magnet. And an electromagnetic rotation sensor having.

A belt transmission device according to a twelfth aspect of the present invention is an engine start signal, an engine speed signal, a vehicle speed signal, a rotating electric machine speed signal, an auxiliary machine load level signal, an accelerator pedal position signal, a brake pedal ON / OFF. signal,
The tension of the belt and the spring constant of the spring are adjusted by a command from the CPU that processes the information of the tensioner pressure value signal, the tensioner pressure fluctuation frequency signal, and the electric motor speed signal.

A belt transmission device according to a thirteenth aspect of the present invention uses a vehicle engine as an engine.

A belt transmission device according to a fourteenth aspect of the present invention uses a motor generator as a rotating electric machine.

According to the fifteenth aspect of the present invention, the belt tension adjusting device is installed at a position on the belt tension side of the rotating electric machine at the time of starting and at the belt loosening side of the engine pulley after starting.

According to a sixteenth aspect of the present invention, a belt transmission control system determines whether or not the engine can be stopped based on the signal information of the idling state of the engine, the idling duration, the vehicle speed, and the accelerator pedal depression amount. The adjustment control according to claim 6 is performed based on the signal information of the accelerator depression amount.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a plan view showing an entire belt transmission device centering on an engine according to Embodiment 1 of the present invention, and FIG. 2 is a side sectional view showing a belt tension adjusting device in the belt transmission device with a tension pulley unit protruding most. FIG. 3 is a plan view showing a belt tension adjusting device in the belt transmission in a state where the tension pulley unit is most protruded, and FIG. 4 is a view showing the rear stopper being a switch SW before the flange portion comes into contact with the cushioning material.
6 is a side sectional view showing the belt tension adjusting device in the belt transmission showing the state immediately before the switch 6 is cut, and FIG. 5 is a side sectional view showing the belt tension adjusting device in the belt transmission showing the state in which the rear side stopper switches the switch SW6. FIG. 6 is a system block diagram showing the belt transmission device when the electric motor rotates forward (when the tension pulley unit is pushed out), and FIG. 7 shows the belt transmission device when the electric motor rotates backward (when the tension pulley unit is pulled back). FIG. 8 is a system block diagram showing the relationship between the bending amount and spring load of the first, second and third springs alone, and the relationship between the bending amount and spring load when these three springs are configured as follows. The graph which shows, FIG. 9 is a flowchart when raising the belt tension at the time of starting by Embodiment 1 of this invention, FIG. Embodiment 1 of the present invention is a flowchart for reducing belt tension after starting, and FIG. 11 is a flowchart for reducing belt vibration (amplitude) according to Embodiment 1 of the present invention.

In the figure, 1 is an engine, 2 is a crank pulley which is an engine pulley mounted on a crankshaft of an engine 1, 3 and 4 are auxiliary pulleys which are mounted on an auxiliary machine A and an auxiliary machine B, respectively. Reference numerals 5 and 6 are fixed tensioner pulleys for adjusting the belt winding angle of each pulley to suppress belt slip, 7 is a pulley for a rotary electric machine attached to a starting motor generator that is a rotary electric machine, and 8 is a belt tension adjusting device. 9 is a tension pulley unit around which a belt 10 is wound. The belt 10 rotates counterclockwise from the crank pulley 2 in a fixed tensioner pulley 5, an accessory pulley 3, an accessory pulley 4, a fixed tensioner pulley 6, The rotary electric machine pulley 7 and the tension pulley unit 8 provided in the belt tension adjusting device 9 are wound in this order. Location 9 is configured to be able to vary the tension of the belt 10 continuously.

The fixed tensioner pulleys 5 and 6 are set so that the belt wrap angle of the belt 10 that hangs over the crank pulley 2, the auxiliary pulleys 3 and 4, and the rotary electric machine pulley 7 is increased so that belt slip does not occur. ing. Similarly, the belt tension adjusting device 9 also increases the belt winding angle of the rotary electric machine pulley 7 and the crank pulley 2 so that belt slip does not occur, and the tension of the belt 10 is set to a preset constant tension. Working to keep in.

The tension pulley unit 8 has a cylindrical tension pulley 11 around which a belt 10 is hung.
And a bearing 12 fitted and fixed on the inner peripheral side, and a bush 1 press-fitted on the inner diameter side of the bearing 12.
3, the spacer 14 inserted into the bush 13 and abutting the inner ring end surface of the bearing 12, and the bearing 12 fitted to the tension pulley 11 are held via the bush 13 and the spacer 14, and the bolts 15 are provided on both sides thereof. U-shaped arm plate 16 pinched and fastened with
It consists of The tension pulley 11 is configured to be rotatable coaxially with the bush 13 or the bolt 15 by a bearing 12.

Reference numeral 17 denotes a piston fixedly connected to the arm plate 16 by a connecting means such as welding or caulking,
Reference numeral 18 denotes a cylinder having an inner diameter cylindrical portion that slides smoothly on the piston 17, and 19 is a pin that is press fitted into the piston 17 and that moves in the pin guide 18a to restrict relative rotation with the cylinder 18. Is a flange portion formed at the end of the cylinder 18, and is a first portion mounted between the flange portion 18 b and the arm plate 16.
Spring 20a, second spring 20b and third
The spring 20c and the first connecting plate 21a and the second connecting plate 21b connecting these in series form a multi-stage spring elastic force generating portion having an auto tensioner function. The elastic member 22 that forms the bottom of the cylinder 18 is made of a rubber-based material that restricts the movement of the piston 17 and at the same time has a cushioning function.

The cylinder 18 and the flange portion 18b constitute a part of the thrust shaft 23, and the front side columnar portion 23a of the thrust shaft 23 smoothly slides on the inner circumferential cylindrical portion of the rotary shaft 25 of the electric motor 24. It is possible, and the threaded portion 25b of the rotary shaft 25 and the threaded portion 23b of the thrust shaft 23 are screwed together, and the rotational torque from the rotary shaft 25 is converted into an axial force and transmitted to the thrust shaft 23. As a result, the cylinder 18 can be moved in the left-right direction.

Next, the structure of the electric motor 24 will be described. Reference numeral 26 is a field magnetic pole composed of a permanent magnet or the like and serves to generate a magnetic flux. Reference numeral 27 is a yoke forming a magnetic path.
Is a core portion that constitutes a magnetic path, 29 is an armature coil wound around an armature slot portion (not shown), and 30 is a commutator that switches the current supplied to the armature coil 29. An armature 31 is composed of the rotating shaft 25.

Further, 32 is a front side bearing which fixes the rotary shaft 25 in the axial direction in cooperation with the snap ring 33 and is inserted and supported, and 34 is a front side which is fitted and supported by the front side bearing 32. Side bracket, 35 is a rear side bearing for inserting and supporting the rear side of the rotary shaft 25, and 36 is this rear side bearing 35
A rear side bracket that fits and supports the connector 37, a brush 37 that slides on the commutator 30 to supply power, and a brush 37.
It is a brush holder for holding.

In the present embodiment, the pin 19 and the pin guide 18a are provided so that the piston 17 and the cylinder 18 do not rotate relative to each other, and the guide rod 39 and the slit 18c provided at one end of the flange portion 18b. Is
The rotation shaft 25 and the thrust shaft 23 are provided so as not to rotate together due to the frictional force between the screw portion 25b and the screw portion 23b.

Further, a stopper 40 for restricting the movement amount of the thrust shaft 23 is provided via a rear screw portion 23c, and a rear bracket 36 of this stopper 40 is provided.
A cushioning member 41 is provided at the abutting portion between the front bracket 34 and the flange portion 18b.

Further, the flange portion 18 is provided so that the rotating shaft 25 of the electric motor 24 and the thrust shaft 23 do not rotate together.
Although the guide rod 39 is provided so as to guide the slit 18c of b, the guide rod 39 is integrally formed with the rear end portion of the bolt 44 that is tightened and assembled with the electric motor 24.

Further, a mounting bracket 45 is provided which can uniformly tighten and fix the outer circumference of the electric motor 24 over the entire circumference and can adjust the fixing position in the axial direction. Incidentally, 46 is a bolt and 47 is a mounting bolt. Further, a ring groove 36b is provided on the inner peripheral side of the bearing box 36a, and an elastic ring 48 is attached to the ring groove 36b.

Further, 49 is a tension pulley unit 8
And a thruster 23, a tensioner pressure sensor 50, a plate holding the tensioner pressure sensor 49, 51 a + side switch terminal, 52-a side switch terminal, and 53 a switch. An auxiliary switch mechanism (SW6) is configured by 51, 52 and the switch 53. Also 54
Is a catch plate, 55 is a spring, and 56 is a bolt for fixing the catch plate 54.

Reference numeral 60 denotes an engine speed signal, which is an external signal acquired by the engine speed sensor, an engine start signal, a vehicle speed signal measured by the vehicle speed sensor, and a rotating electric machine speed signal measured by the rotating electric machine speed sensor. , Auxiliary equipment load level signal, brake pedal ON / OF
F signal, accelerator pedal position signal, tensioner pressure value signal, tensioner pressure fluctuation frequency signal, etc. are transmitted C
It is a PU (central processing unit), and the CPU 60 performs signal processing and arithmetic processing, and the processed control signal is transmitted to the electric motor control circuit 61. Reference numeral 62 denotes an electric motor drive circuit to which an electric motor control signal is transmitted from the electric motor control circuit 61, and the electric motor drive circuit 62 controls energization of the electric motor 24 based on the control signal.

63 is an A / D converter for converting an analog signal from the tensioner pressure sensor 49 into a digital signal and transmitting it to the CPU 60, 64 is a battery for supplying a current to the electric motor 24, 65 is a high voltage battery, and 66 is A DC / DC converter for converting electric power between the battery 64 and the high-voltage battery 65, a rotating electric machine 67 for rotating a rotating electric machine pulley based on a signal from the CPU 60, 6
Reference numeral 8 is an inverter, SW2 to SW5 are switches for switching the rotation direction of the electric motor, and 69 is these switches S.
It is a relay drive circuit for switching W2 to SW5.

Next, the operation of the belt transmission having the above structure will be described. In FIG. 1, when the engine 1 is started from the state in which the engine 1 is stopped, the rotating electric machine pulley 7 is rotated clockwise by the key switch of the vehicle or the rotating electric machine 67 under a predetermined starting condition. The driving force is transmitted to the crank pulley 2 via the belt 10, the crank pulley 2 rotates, and the engine 1 starts.

At this time, it is necessary to transmit a large transmission torque from the rotary electric machine pulley 7 to the crank pulley 2 via the belt 10 in a state where belt slip does not occur. The tension of the belt 10 is previously switched to a higher set tension before the engine is started by the belt tension adjusting device 9 installed in the belt tension side area between them. After the engine 1 is started, the belt tension adjusting device 9 switches the set tension to the normal tension of the belt 10 when the engine 1 drives the auxiliary equipment. Here, the belt tension adjusting device 9 is located on the belt tension side of the rotary electric machine pulley 7 before starting, and is located on the belt loosening side of the crank pulley 2 after starting.

The switching control of the set tension of the belt 10 is performed by
It is carried out as follows. First, an engine speed signal, an engine start signal, a vehicle speed signal, a rotating electric machine speed signal, an auxiliary machine load level signal, a brake pedal O which are external signals.
An N / OFF signal, an accelerator pedal position signal, a tensioner pressure value signal, a tensioner pressure fluctuation frequency signal, etc. are transmitted to the CPU 60. CPU 60 performs signal processing,
The control signal that has been subjected to arithmetic processing and processed is the motor control circuit 6
It is transmitted to 1. Next, an electric motor control signal is transmitted from the electric motor control circuit 61 to the electric motor drive circuit 62, and the electric motor drive circuit 62 controls energization of the electric motor 24 based on the control signal.

Next, the operation of the belt tension adjusting device 9 will be described. First, in FIG. 1, the tension of the belt 10 is adjusted by the tension pulley unit 8 of the belt tension adjusting device 9 pressing the belt 10 diagonally right upward. 2 and 3 show the state of the belt tension adjusting device 9 when the engine is started by the starting motor generator, and the belt tension adjusting device when the tension pulley unit 8 of the belt tension adjusting device 9 is pushed out most. 9 shows the internal state of No. 9.

In order to adjust the large belt tension required at the time of starting the engine, the motor drive circuit 62, the brush 37, and the commutator 30 are used to rotate the motor 24 in the direction to push out the tension pulley unit 8. Is energized. When the rotating force is generated in the armature 31, the rotating force of the armature 31 is converted into a force for pushing out the thrust shaft 23 at the screw fastening portion of the screw portion 25b of the rotating shaft 25 and the screw portion 23b of the thrust shaft 23,
The thrust shaft 23 is pushed out to the front side.

When the thrust shaft 23 is pushed out, through the flange portion 18b, the third spring 20c, the second connecting plate 21b, the second spring 20b, the first connecting plate 21a and the first spring 20a, The tension pulley unit 8 presses the belt 10 with the elastic force set by the spring characteristics of the first, second and third springs 20a, 20b, 20c. In this case, the thrust shaft 23 is pushed out, and the first, second, and third springs 20a, 20b, 20c are greatly compressed, so that the spring elastic force is large and the force with which the tension pulley unit 8 presses the belt 10 is also large. , The tension of the belt 10 is also increased and adjusted to the tension required for starting. At this time, the tip of the piston 17 is adjusted to a position where it comes close to the elastic member 22 mounted on the bottom of the cylinder 18 by a short distance.

Next, when the starting motor generator is started, the tension of the belt 10 on the belt tension adjusting device 9 side is further increased because it is on the belt tension side, and the tension pulley 11 receives the reaction force from the belt 10. Although it is about to be pushed back, the tip of the piston 17 and the elastic member 22 come into contact with each other to block the tension pulley unit 8 from being pushed back.
Since 1 is pushed back and the tension is reduced, the problem that the driving force cannot be transmitted to the load does not occur.
The pin 19 and the pin guide 18a shown in FIG.
7 and the cylinder 18 are provided so as not to rotate relative to each other, and the guide rod 39 and the slit 1 of the flange 18b
8c is provided so that the rotary shaft 25 and the thrust shaft 23 do not rotate together due to the frictional force between the screw portion 25b and the screw portion 23b.

After the engine is started, the control signal for rotating the armature 31 in the reverse rotation direction to that in FIGS. 2 and 3 is C.
The control signal generated by the PU 60 is controlled by the CPU 60 via the electric motor control circuit 61 and the electric motor drive circuit 62. Then, based on this signal, the thrust shaft 23 is returned, and the tension pulley unit 8 is also pushed back by the belt reaction force, and the first, second, and
The belt tension is adjusted to a position where the spring elasticity of the third springs 20a, 20b, 20c and the reaction force from the belt 10 are balanced.

FIG. 8 shows the first, second and third springs 2
0a, 20b, 20c relationship between the amount of deflection and the spring load, and as shown in the present invention, the first, second, and third springs 20a, 20b, 20c The relationship between the amount of deflection and the spring load is shown on the same graph. In FIG. 8, the first, second and third springs 20a, 20b, 2 according to the present invention are shown.
Point A of the curve showing the relationship between the amount of flexure and the spring load when 0c are connected in series in a concentric circle corresponds to the state shown in FIGS. 2 and 3, and the amount of flexure of the spring immediately before or at the start of the start. Shows the relation between the spring load and the spring load. The point B corresponds to the state immediately before the thrust shaft 23 moves to the electric motor 24 side and the third spring separates from the end surface of the arm plate 16, and the point C moves the thrust shaft 23 further to the electric motor 24 side. The second spring 20
b corresponds to the state immediately before leaving the end face of the arm plate 16, and point D corresponds to the state in which the thrust shaft 23 has moved most to the electric motor 24 side.

The first, second, and third springs 20 are provided.
The spring constants of a, 20b, and 20c are k1, k2, and
If k3, the spring constant X3 between points A and B is X3 = k3, and the spring constant X2 between points B and C is X2 = k2 · k3 / (k2 + k3) The spring constant X1 between the point and the point D is X1 = k1 · k2 · k3 / (k1 · k2 + k2 · k3 +
k3 · k1), and changes in three steps. Therefore, according to the present invention, it can be understood that the spring load and the spring constant can be continuously changed in a plurality of steps depending on the amount of deflection of the spring.

In this embodiment, the auxiliary switch mechanism SW6 is provided which can mechanically cut off the power supply to the armature coil 29 of the electric motor 24 by the moving position of the thrust shaft 23. That is, by moving the thrust shaft 23 from the state shown in FIG. 2 to the state shown in FIGS. 4 and 5, the connection between the switch terminals 51 and 52 and the switch 53 is released, the switch SW6 is opened, and as shown in FIG. Electric motor 24
The electric current flowing at the time of the reverse rotation of is stopped, and the thrust shaft 23 is stopped.

In order to adjust the belt tension in this way, it is necessary to perform position control for moving the thrust shaft 23 to an appropriate position.
Auxiliary switch mechanism SW that can cut off the power supply to the motor 24
By providing 6, it is possible to perform simple position control. Further, when combined with a position control by a position sensor (not shown) or a rotation sensor described later, for example, even when the control becomes impossible due to a malfunction of the sensor, there is an effect that it works as a fail-safe function.

Further, in the present invention, by providing the switches SW2 to SW5 for switching the rotation direction of the electric motor 24 and the relay drive circuit 69, as shown in FIG. By closing SW2 and SW4 by 69, a current flows in the direction as shown in the figure, and as shown in FIG. 7, during reverse rotation, the relay drive circuit 69 causes SW3 and SW5 to rotate.
Current is passed in the direction shown in the figure by closing.
In this way, the switch SW2 by the relay drive circuit 69
Since the forward and reverse of the rotation direction of the electric motor 24 can be switched only by switching SW5 to SW5, a simple configuration can be obtained.

Further, between the tension pulley unit 8 and the thrust shaft, the flange portion 18b and the spring 2 are provided.
A tensioner pressure sensor 49 is provided between 0a to 20c,
The pressing force by the springs 20a to 20c is measured. By directly detecting the belt reaction force value that the tension pulley 11 receives from the belt 10, it is possible to control the movement amount of the thrust shaft 23 while converting and detecting the belt tension value. The belt tension value can be adjusted to an appropriate value even if the set tension value changes or the length of the belt 10 varies widely.

Further, by obtaining the amplitude of the belt tension fluctuation and the belt tension fluctuation frequency (tensioner pressure fluctuation frequency signal), an abnormality in the belt behavior can be detected, and, for example, the thrust shaft 23 is moved by the electric motor 24. As shown in FIG. 8, changing the value to a value determined by the spring constant of any of the three springs 20a, 20b, 20c has the effect of preventing the occurrence of belt resonance. In this way, the thrust shaft 23 can be moved to change the belt tension value and the spring constant of the belt tension adjusting device 9.

Next, as a judgment of completion of the belt tension up adjustment control necessary for starting the engine, the tensioner pressure measured by the tensioner pressure sensor 49 is equal to or higher than the high pressure specified value, and the high pressure specified value + α% (5% ≦ 5% ≦ α% ≦ 40
%) Or less will be described based on the flowchart of FIG. In addition, in FIG. 9, the case where α% is 20% will be described. First, in STEP100, SW1 is turned on and STEP
At 101, as shown in FIG. 6, SW2 and SW4 are turned on, SW3 and SW5 are turned off, the electric motor drive current is turned on (STEP 102), and the electric motor 24 is rotated forward (STEP 103). Then, in STEP 104, high pressure specified value ≤ tensioner pressure ≤ high pressure specified value + 20%
If it is achieved, the electric motor drive current is turned off (STEP 105), and if not achieved, the process returns to STEP 102.

After the engine is started, it is judged that the tension down control for the belt tension required to drive the auxiliary machine is completed, the tensioner pressure is equal to or higher than the low pressure specified value, and the low pressure specified value + β% (5
% ≦ β% ≦ 30%) or less will be described with reference to the flowchart of FIG.
In FIG. 10, the case where β% is 20% will be described. First, in STEP 200, SW1
Is turned on, and in STEP201, as shown in FIG. 7, SW2 and SW4 are turned off, SW3 and SW5 are turned on, and the motor drive current is turned on (STEP202).
The electric motor 24 is rotated in the reverse direction (STEP 203). Then, in STEP204, it is judged whether or not the low pressure specified value ≦ tensioner pressure ≦ low pressure specified value + 20% is satisfied, and if it is achieved, the electric motor drive current is turned off (STEP2
05), if not achieved, return to STEP 202.

The high-pressure specified value and the low-pressure specified value can be changed depending on the ambient temperature in the engine room. That is, if the temperature rises, the belt 10 becomes softer or stretches, so that it becomes necessary to change the specified value.

Further, when the tensioner pressure fluctuation amplitude rate (pressure fluctuation width / median pressure value) obtained from the measured value of the tensioner pressure sensor 49 after the engine is started is equal to or higher than the specified rate, the belt tension is increased or decreased. It is also possible to judge whether the control is executed, that is, whether the spring constant of the belt tension adjusting device 9 is increased or decreased. FIG. 11 is a flowchart showing the operation when such control is performed.
At 00, first, it is judged whether or not the tensioner pressure fluctuation amplitude ratio ≧ specified ratio, and if YES, SW1 is turned on.
Set to N (STEP301), SW2, SW4
ON, SW3, SW5 OFF (STEP30
2).

Then, the motor drive current is turned on (ST
(EP303), rotate the electric motor 24 forward (STEP30
4), turn off the motor drive current (STEP30
5). Next, it is determined whether or not the tensioner pressure fluctuation amplitude rate has decreased (STEP 306). If the tensioner pressure fluctuation amplitude rate has decreased at this stage, the process proceeds to STEP 312 described below, but if it has not decreased, the process proceeds to the next STEP 307. STEP3
At 07, SW2 and SW4 are turned off, and SW3 and SW4
5 is turned on and a motor drive current is passed (STEP30
8) Then, the electric motor is rotated in the reverse direction (STEP309).

Then, the motor drive current is turned off (ST
EP310), and again it is determined whether or not the tensioner pressure fluctuation amplitude rate is decreasing (STEP311). If it is determined that the pressure is decreasing, it is determined whether or not the tensioner pressure fluctuation amplitude rate is less than or equal to the specified rate (STEP 31
2) Further, it is judged whether the tensioner pressure is equal to or higher than the specified minimum pressure value, and the work is finished.

Embodiment 2. 12 is a side sectional view showing a belt tension adjusting device in a belt transmission device in which a tension pulley unit 8 according to Embodiment 2 of the present invention is most protruded, and FIGS. 13 (a), 13 (b) and 13 (c) show an electric motor 24. A front view showing an electromagnetic rotation sensor for detecting the number of rotations,
FIG. 14 is a connection diagram of the electromagnetic rotation sensor, FIG. 15 is an output voltage waveform diagram of the electromagnetic rotation sensor, and FIG. 16 is a normal rotation of the electric motor.
It is a system block diagram which shows the belt transmission device (when a tension pulley unit is pushed out).

In the figure, reference numeral 71 denotes a magnetic plate fixed to the rotary shaft 25, rotating concentrically with the rotary shaft 25, and having claw portions 71a protruding at equal intervals in the axial direction of the outer circumference, and 72 a cylinder of the rear bracket 36. The electromagnetic rotation sensor 72 is attached to the cylindrical portion 36c and is provided in the vicinity of the claw portion 71a on the outer periphery of the magnetic plate 71. The electromagnetic rotation sensor 72 includes a magnet 72a and a first magnetoresistive effect element 72.
b, the second magnetoresistive effect element 72c.
The magnetoresistive effect element is an element whose electric resistance changes with a magnetic field. Also, 73 is a catch plate, 74
Is an output voltage detection circuit, and 75 is an A / D converter for converting an analog signal into a digital signal.

In the state of FIG. 13A, since the claw portion 71a is close to the second magnetoresistive effect element 72c, the magnetic flux passing through the second magnetoresistive effect element 72c becomes the largest,
Since the electric resistance becomes the largest, the voltage balance in FIG. 14 is lost and the output voltage becomes large, which corresponds to the position of point X in FIG. Then, in the state of FIG. 13 (b), since it becomes the center voltage, it corresponds to point Y, and the state of FIG. 13 (c) corresponds to the point Z because it is in the opposite position to that of FIG. 13 (a). Will be done. Thus, FIG.
By observing the output voltage waveform of No. 5, the rotation speed of the electric motor can be measured.

FIG. 17 is a front view showing an electromagnetic rotation sensor using the Hall element 76 and the magnet 72a. As described above, the Hall effect is utilized by using the Hall element 76, and the output voltage is read so that the electric motor is driven. The number of rotations can be measured. Then, the electric motor rotation speed signal is input to the CPU 60, and the belt tension can be adjusted by a command from the CPU 60.

That is, the engine start signal, the engine speed signal, the vehicle speed signal, the rotating electric machine speed signal, the auxiliary machine load level signal, the accelerator pedal position signal, the brake pedal ON /
CP that processes information of OFF signal, tensioner pressure value signal, tensioner pressure fluctuation frequency, and motor speed signal
According to a command from U60, the belt tension and the spring constant of the belt tension adjusting device 9 are adjusted.

Embodiment 3. Whether the engine idle stop is possible or not is determined by the signal information of the idling state of the engine, the idling duration time, the vehicle speed, and the accelerator pedal depression amount. After the engine is idle stopped, the engine pedal start amount as shown in FIG. It is also possible to shift to the belt tension increase adjustment control operation for.

FIG. 18 is a schematic configuration diagram of the entire engine. In the figure, reference numeral 77 is a clutch for transmitting power, and 78 is a transmission. FIG. 19 is a flow chart for explaining the belt transmission control system after idle stop according to the third embodiment of the present invention.
In P400, it is determined whether or not the engine is in the idling state, in STEP 401 it is determined whether the idling has continued for a predetermined time, in STEP 402 it is determined whether the vehicle speed exists, and in STEP 403 whether the accelerator is depressed. The determination is made, and in STEP 404, the engine transmission 78 is controlled to the neutral state.

Then, engine stop is executed (ST
In EP405) and STEP406, it is determined whether or not the engine has stopped, and in STEP407,
Determine whether the accelerator is stepped on, STEP 408
At, the belt tension increase adjustment control shown in FIG. 9 is performed. Next, it is determined whether the engine transmission 78 is in the neutral state (STEP409), and if it is not in the neutral state, the engine clutch 77 is turned off (ST).
EP410). This is to prevent sudden powering of the wheels.

After that, the rotating electric machine 67 is rotated (STE
(P411), it is determined whether the engine has been completely detonated, that is, whether the engine is operating normally (STEP41
2), the tension down control shown in FIG. 10 is performed (ST
EP413). Then, while performing normal operation (S
TEP414), the up or down control of the belt tension shown in FIG. 11 is performed.

Fourth Embodiment A vehicle engine can be used as the engine 1. That is, since the engine 1 is a vehicle engine, the life of the vehicle belt can be improved, and the shafts and bearings of the vehicle accessories and their supporting structures can be downsized and reduced in cost.

Further, since the motor generator is used as the rotating electric machine, the starting power can be stably and surely supplied to the engine 1, and after the engine is started, electric power is supplied to the auxiliary machine or the battery by the generator function. Can be supplied.

At the time of starting, the belt tension side of the rotating electric machine,
After starting, the belt tension adjusting device 9 is arranged at a position on the belt loosening side of the crank pulley 2. That is, since the crank pulley 2 is located on the belt loosening side after the engine is started, it is most effective in preventing belt slip, and the belt life can be improved.

[0069]

According to the belt transmission device of the first aspect of the present invention, the rotary electric machine pulley attached to the rotary electric machine for transmitting the starting power to the engine, and the starting power to the engine, An engine pulley that transmits the rotational power of the engine to an accessory, an accessory pulley that rotates with the power from the engine pulley to drive the accessory, a rotating electrical machine pulley, an engine pulley, and an accessory pulley. The belt tension adjusting device is provided with a belt continuously wound around the belt and a belt tension adjusting device for pressing the belt to adjust the belt tension. Tension pulley,
The spring that presses the tension pulley, the thrust shaft that moves the tension pulley, the rotating shaft of the electric motor that transmits torque to the thrust shaft, and the power supply to the armature coil of the electric motor are disconnected by the moving position of the thrust shaft. Since it is configured with an auxiliary switch mechanism capable of performing the above, it is possible to easily control the position of the thrust shaft.

According to the belt transmission device of the second aspect of the present invention, the rotary electric machine pulley attached to the rotary electric machine for transmitting the starting power to the engine, the starting power to the engine, and the engine The engine pulley that transmits rotational power to the accessory, the accessory pulley that rotates with the power from the engine pulley to drive the accessory, the rotary machine pulley, the engine pulley, and the accessory pulley And a belt tension adjusting device that presses the belt to adjust the belt tension. The belt tension adjusting device is a tension device that is rotatably supported by the belt. A pulley, a spring that presses this tension pulley, a thrust shaft that moves the tension pulley, and torque transmission to this thrust shaft. Since it is composed of a rotating shaft of the electric motor, a switch for changing the direction of the electric current flowing through the armature coil of the electric motor for changing the rotating direction of the electric motor, and a relay drive circuit for interlocking the switch, The rotation direction of the electric motor can be switched with a simple structure.

According to the belt transmission device of the third aspect of the present invention, the rotary electric machine pulley attached to the rotary electric machine for transmitting the starting power to the engine, the starting power to the engine, and the engine The engine pulley that transmits rotational power to the accessory, the accessory pulley that rotates with the power from the engine pulley to drive the accessory, the rotary machine pulley, the engine pulley, and the accessory pulley And a belt tension adjusting device that presses the belt to adjust the belt tension. The belt tension adjusting device is a tension device that is rotatably supported by the belt. The pulley, the spring that presses the tension pulley, the thrust shaft that moves the tension pulley, and the tension pulley are received from the belt. Since it is composed of a tensioner pressure sensor that can detect the reaction force, the amount of movement of the thrust shaft can be controlled while detecting the belt reaction force value, and the belt tension value can be adjusted to an appropriate value. You can

According to the belt transmission device of the fourth aspect of the present invention, since the means for detecting the tensioner pressure fluctuation frequency is provided from the tensioner pressure value detected by the tensioner pressure sensor, the belt abnormality can be detected. It is possible to prevent the resonance of the belt.

According to the belt transmission device of the fifth aspect of the present invention, the thrust shaft is moved based on the tensioner pressure or the tensioner pressure fluctuation frequency, so that the belt tension value can be adjusted to an appropriate value. it can.

According to the belt transmission device of the sixth aspect of the present invention, the value measured by the tensioner pressure sensor is equal to or higher than the high pressure specified value when the adjustment control for increasing the belt tension is performed at the time of starting the engine, and High pressure regulation value + α
Since the adjustment control is completed when% (5% ≦ α% ≦ 40%) or less, the engine can be started smoothly.

According to the belt transmission device of the seventh aspect of the present invention, the value measured by the tensioner pressure sensor is equal to or higher than the low pressure specified value when the adjustment control for reducing the belt tension is performed after the engine is started. Low pressure specified value + β
Since the adjustment control is completed when% (5% ≦ β% ≦ 30%) or less, it is possible to optimally drive the auxiliary machine.

According to the belt transmission device of the eighth aspect of the present invention, the high-pressure prescribed value and the low-pressure prescribed value are changed according to the temperature in the engine room, so that the belt condition can be appropriately dealt with. it can.

According to the belt transmission device of the ninth aspect of the present invention, when the tensioner pressure fluctuation amplitude ratio (pressure fluctuation width / median pressure value) obtained from the tensioner pressure value after the engine is started is equal to or higher than the specified ratio, the belt Since the tension adjustment control is performed, the resonance of the belt can be prevented.

According to the belt transmission device of the tenth aspect of the present invention, the rotary electric machine pulley attached to the rotary electric machine for transmitting the starting power to the engine, the starting power to the engine, and the engine The engine pulley that transmits rotational power to the accessory, the accessory pulley that rotates with the power from the engine pulley to drive the accessory, the rotary machine pulley, the engine pulley, and the accessory pulley And a belt tension adjusting device that presses the belt to adjust the belt tension. The belt tension adjusting device is a tension device that is rotatably supported by the belt. A pulley,
The spring that presses the tension pulley, the thrust shaft that moves the tension pulley, the rotary shaft of the electric motor that transmits torque to the thrust shaft, and the rotary shaft that is fixed to the rotary shaft and project at equal intervals in the axial direction on the outer circumference. Since it is composed of a magnetic plate having a claw portion and an electromagnetic rotation sensor having a magnetoresistive effect element and a magnet, which is installed so as to oppose the magnetic plate, the rotation is simple and accurate. The number can be detected.

According to the belt transmission device of the eleventh aspect of the present invention, the rotary electric machine pulley attached to the rotary electric machine for transmitting the starting power to the engine, the starting power to the engine, and the engine The engine pulley that transmits rotational power to the accessory, the accessory pulley that rotates with the power from the engine pulley to drive the accessory, the rotary machine pulley, the engine pulley, and the accessory pulley And a belt tension adjusting device that presses the belt to adjust the belt tension. The belt tension adjusting device is a tension device that is rotatably supported by the belt. A pulley,
The spring that presses the tension pulley, the thrust shaft that moves the tension pulley, the rotary shaft of the electric motor that transmits torque to the thrust shaft, and the rotary shaft that is fixed to the rotary shaft and project at equal intervals in the axial direction on the outer circumference. Since it is composed of a magnetic plate having a claw portion and an electromagnetic rotation sensor having a Hall element and a magnet while being installed opposite to the magnetic plate,
With a simple structure, the number of rotations of the rotating shaft can be accurately detected.

According to the belt transmission device of the twelfth aspect of the present invention, the engine start signal, the engine speed signal,
Vehicle speed signal, rotating electrical machine speed signal, auxiliary machine load level signal,
Accelerator pedal position signal, brake pedal ON / OFF
Signal, tensioner pressure value signal, tensioner pressure fluctuation frequency signal and electric motor speed signal information are processed by the CPU to adjust the belt tension and spring constant so that the belt is kept in an optimum state. be able to.

According to the belt transmission device of the thirteenth aspect of the present invention, since the vehicle engine is used as the engine, the life of the vehicle belt can be improved, and the shaft and bearing of the vehicle accessory and the bearing It is possible to reduce the size and cost of the support structure.

According to the belt transmission device of the fourteenth aspect of the present invention, since the motor generator is used as the rotating electric machine, the starting power can be stably and reliably supplied to the engine, and after the engine is started. Can supply power to the auxiliary equipment or the battery by the generator function.

According to the belt transmission device of the fifteenth aspect of the present invention, since the belt tension adjusting device is arranged at a position on the belt tension side of the rotating electric machine at the time of starting and at the belt loosening side of the engine pulley after the starting, It is most effective in preventing belt slip and can improve the belt life.

According to the sixteenth aspect of the belt transmission control system of the present invention, whether or not the engine can be stopped is determined based on the signal information of the idling state of the engine, the idling duration time, the vehicle speed, and the accelerator pedal depression amount, and after the engine is idle stopped. , By the signal information of the accelerator depression amount,
Since the adjustment control according to the sixth aspect is performed, the engine can be started optimally.

[Brief description of drawings]

FIG. 1 is a plan view showing an entire belt transmission device centering on an engine according to a first embodiment of the present invention.

FIG. 2 is a side sectional view showing a belt tension adjusting device in the belt transmission in a state where the tension pulley unit is most protruded.

FIG. 3 is a plan view showing a belt tension adjusting device in the belt transmission device in a state where the tension pulley unit is most protruded.

FIG. 4 is a side sectional view showing the belt tension adjusting device in the belt transmission, showing a state immediately before the rear stopper turns off the switch SW6 before the flange portion comes into contact with the cushioning material.

FIG. 5 is a side sectional view showing a belt tension adjusting device in the belt transmission, showing a state in which a switch SW6 is turned off by a rear stopper.

FIG. 6 is a system block diagram showing the belt transmission device at the time of normal rotation of the electric motor (when the tension pulley unit is pushed out) according to Embodiment 1 of the present invention.

FIG. 7 is a system block diagram showing a belt transmission device during reverse rotation of the electric motor (when the tension pulley unit is pulled back) according to Embodiment 1 of the present invention.

FIG. 8 is a graph showing a relationship between a spring deflection amount and a spring load.

FIG. 9 is a flowchart for increasing the belt tension at the time of starting according to the first embodiment of the present invention.

FIG. 10 is a flowchart in the case of reducing the belt tension after starting according to the first embodiment of the present invention.

FIG. 11 is a flowchart for reducing belt vibration (amplitude) according to the first embodiment of the present invention.

FIG. 12 is a side sectional view showing a belt tension adjusting device in a belt transmission device in a state in which a tension pulley unit according to Embodiment 2 of the present invention is most protruded.

FIG. 13 is a front view showing an electromagnetic rotation sensor for detecting the rotation speed of an electric motor according to Embodiment 2 of the present invention.
(a) (b) (c).

FIG. 14 is a connection diagram of an electromagnetic rotation sensor according to a second embodiment of the present invention.

FIG. 15 is an output voltage waveform diagram of the electromagnetic rotation sensor according to the second embodiment of the present invention.

FIG. 16 is a diagram showing a second embodiment of the present invention when the electric motor is rotating forward (when the tension pulley unit is pushed out).
2 is a system block diagram showing the belt transmission device of FIG.

FIG. 17 is a front view showing an electromagnetic rotation sensor according to a second embodiment of the present invention.

FIG. 18 is a schematic configuration diagram of an entire engine.

FIG. 19 is a flowchart for explaining the belt transmission control system after idle stop according to the third embodiment of the present invention.

[Explanation of symbols]

1 engine, 2 engine pulley, 3 auxiliary machinery pulley, 7 rotary electric machine pulley, 9 belt tension adjusting device,
10 belts, 11 tension pulleys, 20a, 20
b, 20c spring, 23 thrust shaft, 24
Electric motor, 25 rotating shaft, 29 armature coil, 49
Tensioner pressure sensor, 60 CPU, 67 rotating electric machine, 69 relay drive circuit, 71 magnetic plate, 71
a claw portion, 72 electromagnetic rotation sensor, 72a magnet, 7
2b 1st magnetoresistive effect element, 72c 2nd magnetoresistive effect element.

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) F02B 67/06 F02N 11/00 F02N 15/08 F02D 29/06 F16H 7/02 F16H 7/08

Claims (16)

(57) [Claims] 1. A pulley for a rotating electric machine mounted on a rotating electric machine for transmitting a starting power to an engine, and an engine pulley for transmitting a starting power to the engine and a rotational power of the engine to an auxiliary machine. An accessory pulley that rotates with the power from the engine pulley to drive the accessory, and a belt that is continuously wound around the rotary electric machine pulley, the engine pulley, and the accessory pulley, In a belt transmission device including a belt tension adjusting device that presses a belt to adjust the belt tension, the belt tension adjusting device presses the tension pulley on which the belt is hung and is rotatably supported, and the tension pulley. Spring, the thrust shaft that moves the tension pulley, and the rotation of the electric motor that transmits torque to the thrust shaft. A belt transmission comprising: a rotating shaft; and an auxiliary switch mechanism capable of cutting off power supply to an armature coil of the electric motor depending on a moving position of the thrust shaft. 2. A pulley for a rotating electric machine mounted on a rotating electric machine for transmitting starting power to an engine, and an engine pulley for transmitting starting power to the engine and transmitting rotational power of the engine to an auxiliary machine. An accessory pulley that rotates with the power from the engine pulley to drive the accessory, and a belt that is continuously wound around the rotary electric machine pulley, the engine pulley, and the accessory pulley, In a belt transmission device including a belt tension adjusting device that presses a belt to adjust the belt tension, the belt tension adjusting device presses the tension pulley on which the belt is hung and is rotatably supported, and the tension pulley. Spring, the thrust shaft that moves the tension pulley, and the rotation of the electric motor that transmits torque to the thrust shaft. A rotating shaft, a switch for changing the direction of the current flowing through the armature coil of the electric motor for changing the rotating direction of the electric motor, and a relay drive circuit for interlocking the switch. Belt transmission device. 3. A rotary electric machine pulley mounted on a rotary electric machine for transmitting starting power to an engine, and an engine pulley for transmitting starting power to the engine and transmitting rotational power of the engine to an auxiliary machine. An accessory pulley that rotates with the power from the engine pulley to drive the accessory, and a belt that is continuously wound around the rotary electric machine pulley, the engine pulley, and the accessory pulley, In a belt transmission device including a belt tension adjusting device that presses a belt to adjust the belt tension, the belt tension adjusting device presses the tension pulley on which the belt is hung and is rotatably supported, and the tension pulley. Spring, a thrust shaft that moves the tension pulley, and a reaction force that the tension pulley receives from the belt. A belt transmission, comprising: a tensioner pressure sensor capable of detecting force. 4. The belt transmission device according to claim 3, further comprising means for detecting a tensioner pressure fluctuation frequency from a tensioner pressure value detected by the tensioner pressure sensor. 5. The belt transmission device according to claim 3, wherein the thrust shaft is moved based on the tensioner pressure or the tensioner pressure fluctuation frequency. 6. The value measured by the tensioner pressure sensor when the adjustment control for increasing the belt tension is performed at the time of starting the engine is equal to or higher than the high pressure specified value, and the high pressure specified value + α% (5% ≦ α% ≦ 40 %) Or less, the adjustment control is completed when it is less than or equal to%). 7. When the adjustment control for reducing the belt tension is performed after the engine is started, the value measured by the tensioner pressure sensor is equal to or higher than the low pressure specified value and the low pressure specified value + β% (5% ≦ β% ≦ 30 %) Or less, the adjustment control is completed when it is less than or equal to%). 8. The belt transmission device according to claim 6, wherein the high pressure specified value and the low pressure specified value are changed according to the temperature in the engine room. 9. The belt tension adjustment control is performed when the tensioner pressure fluctuation amplitude ratio (pressure fluctuation width / median pressure value) obtained from the tensioner pressure value after the engine is started is equal to or higher than a specified ratio. Belt transmission described. 10. A pulley for a rotating electric machine mounted on a rotating electric machine for transmitting starting power to an engine, and an engine pulley for transmitting starting power to the engine and transmitting rotational power of the engine to an auxiliary machine. An accessory pulley that rotates with the power from the engine pulley to drive the accessory, and a belt that is continuously wound around the rotary electric machine pulley, the engine pulley, and the accessory pulley, In a belt transmission device including a belt tension adjusting device that presses a belt to adjust the belt tension, the belt tension adjusting device presses the tension pulley on which the belt is hung and is rotatably supported, and the tension pulley. Spring, a thrust shaft for moving the tension pulley, and an electric motor for transmitting torque to the thrust shaft. A rotating shaft, a magnetic plate fixed to the rotating shaft and having claw portions projecting at equal intervals in the axial direction on the outer circumference, and a magnetic plate installed to oppose the magnetic plate, and a magnetoresistive element and a magnet. An electromagnetic rotation sensor having a belt transmission device. 11. A pulley for a rotating electric machine mounted on a rotating electric machine for transmitting starting power to an engine, and an engine pulley for transmitting starting power to the engine and transmitting rotational power of the engine to an auxiliary machine. An accessory pulley that is driven by the power from the engine pulley to drive the accessory, and a belt that is continuously wound around the rotary electric machine pulley, the engine pulley, and the accessory pulley. In a belt transmission device equipped with a belt tension adjusting device for pressing a belt to adjust the belt tension, the belt tension adjusting device presses the tension pulley on which the belt is hung and is rotatably supported, and the tension pulley. Spring, a thrust shaft for moving the tension pulley, and an electric motor for transmitting torque to the thrust shaft. A rotary shaft, a magnetic plate fixed to the rotary shaft and having claw portions projecting at equal intervals in the axial direction of the outer circumference, and a magnetic plate installed opposite to the magnetic plate and having a Hall element and a magnet. A belt transmission including an electromagnetic rotation sensor. 12. An engine start signal, an engine speed signal, a vehicle speed signal, a rotating electric machine speed signal, an auxiliary machine load level signal, an accelerator pedal position signal, a brake pedal ON / O.
CP for processing information of FF signal, tensioner pressure value signal, tensioner pressure fluctuation frequency signal and electric motor speed signal
The belt tension and the spring constant of the spring are adjusted according to a command from U.
The belt transmission device according to any one of 1. 13. The belt transmission according to claim 1, wherein a vehicle engine is used as the engine. 14. A rotating electric machine comprising a motor generator as claimed in any one of claims 1 to 13.
The belt transmission device according to the item. 15. A belt tension side of a rotating electric machine at the time of starting,
The belt transmission according to any one of claims 1 to 14, wherein the belt tension adjusting device is installed at a position on the belt slack side of the engine pulley after starting. 16. The method according to claim 6, wherein whether or not the engine can be stopped is determined based on the signal information of the idling state of the engine, the idling duration time, the vehicle speed, and the accelerator pedal depression amount. A belt transmission control system characterized by performing adjustment control.