JPS60150428A - Engine provided with supercharger - Google Patents

Abstract

PURPOSE:To obtain a necessary supercharge effect in an operation ranged in which supercharge is required, by driving a rotor in a pressure-wave supercharger by means of an electrical motor, and by controlling the rotational speed of the motor such that the ratio between the rotational speed of the rotor and the rotational speed of the engine varies in accordance with the operating condition of the engine. CONSTITUTION:The amount of exhaust gas discharged into an supercharge passage 9 varies in accordance with the ratio between the rotational speed of a rotor 15 and the rotational speed of an engine. Accordingly, when the rotational speed ratio is changed as indicated by the solid line (a), the amount of exhaust gas mixed with intake-air varies as indicated by the chain line (b). The amount of exhaust gas circulation may be controlled as desired by controlling the rotational speed of the rotor 15. The one-dot chain line (c) shows that the amount of exhaust gas recirculation is zero. The chain line (b) which extends below the line (c) indicates such a condition that intake-air blows through exhaust gas. In a high load operation range this rotational speed ratio is increased to obtain a high supercharge effect.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of application in the rhinoceros industry) The present invention relates to an over-cap rear engine engine, particularly a type in which the intake air is compressed by the side air pressure generated in the engine exhaust passage and introduced into the combustion chamber. Regarding an engine with pressure waves ylU set k k.

(@Kitech) Engine exhaust JIIIl! ? Exhaust pressure generated at lj?
Pressure wave supercharging has been proposed for a long time, in which the intake air is completely compressed, and this compressed intake air is introduced into the combustion chamber. It has recently been attracting a lot of attention because it has a higher supercharging effect during low-speed operation compared to the previous model. This type of 7G mud machine has a large number of separated negatives (through the body) extending in the direction of the rotation axis.
The rotor with '6'ie and its rotation l11
It consists of a case that rotates freely for 11 inches (11 inches),
The case has an exhaust inlet and an exhaust inlet located opposite the end of the rotor.
The square air discharge port, the intake inlet, and the intake + discharge port are omitted, and the intake air injected into the gas passage in the rotor from the intake inlet is passed through the 4th and 1st air inlet ports. The structure is such that the air is pushed out toward the intake/discharge port by a pressure of 1 atmosphere. For this reason, the IJ1 first packaging port and the intake/discharge port are 444 times opposed to each other in one direction for the loaf with the rotor in between.
is formed. An example of this type of pressure wave supercharger is disclosed in Japanese Utility Model Application Publication No. Sho Tadder/27g37.

The mistake disclosed in this publication is that the loss air inlet and the exhaust outlet are provided on the 1trl [l rotor ridge side, and the intake 4v inlet and the intake outlet are provided on the other rotor end side. , 4''# Each of the torrent and suction flows flows in the rotor.

Although this is a so-called counterflow type, it is also known that these gases flow in the same four directions through a rotary tube, and its structure and f(f b [I't'',#f, magazine [-in B K
6 t4 + J Vol. /, S-, A/79, /
d4 is mentioned in 76.6.

In addition to showing the effect during rotation, the intake air in the rotor is increased by 1 inch compared to the diesel engine. When the air is brought into contact with the air, a partial mixture of the air and the air occurs, which has the property of being able to produce young air. However, However, it is not possible to appropriately control the amount of exhaust gas recirculation depending on the engine operating condition with only such a naturally obtained viscous recirculation effect.

(Object of the Invention) The present invention provides a structure capable of performing controlled exhaust gas recirculation while achieving the supercharging effect required for HF in a pressure wave supercharger of the type described above. For all purposes.

(Structure of the invention) The above objectives JJ! Therefore, the present invention has the following configuration. That is, the supercharger (-j engine according to the present invention is
The pressure wave supercharger includes a rotor having a plurality of gas passages separated from each other in the direction of rotation, and the rotor is rotatable about its rotation axis. The case includes a warp tank inlet connected to the engine exhaust port and an exhaust outlet for discharging the exhaust gas at a position facing the end of the rotor. The intake and discharge ports connected to the engine suction port are formed by deviating from the 21 turning force direction, and are connected to the engine suction port at With respect to the air outlet, the rotation is 1111.l111・direction=1 (there are 11 air intake ports for inhaling atmospheric air at the position of IJll)=1=1.In the non-explosion ψj, i, 1., Rotate ia#'s rotor ν, !1h/
A 1j shift motor is installed at C, and the rotation speed of this 11 motor is determined by the ratio of the rotor rotation speed to the engine rotation speed, that is, the engine rotation speed is
The control device controls the rotation ratio so that the engine is in the JI11 rotation state.

In a pressure wave supercharger, as the rotor rotates 191 times, the gas in the rotor>Lh path opens to the exhaust inlet.Exhaust pressure is transmitted to this gas path, and 8β gas jll! Exhaust of the road] Pressure e on the e, ? This pressure is caused by the pressure at the intake and discharge ports. By adjusting the length of the rotor to 7M'lx, it is possible to convey the pressure drumming to the intake air population, which causes the gas to propagate in the airway. It will be done. For this LK, the sum of 1 air in the gas path (Af, h I'i moves through the passage later than the pressure wave, so 9; air r reaches the other end of the gas path iil) If the gas inlet path is quickly cut off from the gas discharge port, one ton of exhaust gas will be mixed into the engine intake.Generally, from the relationship of engine intake responsibility, the rotation speed of the rotor is proportional to the engine rotation speed. However, for example, in the engine operating range where 17f airway flow is required, the rotor rotation speed is 11 and the engine -1
By controlling the shrinkage in the rotor so that the rotation speed ratio becomes small, the gas passage becomes υ1 before being blocked from the suction (or discharge)
Air flows through the gas passage and mixes with the intake air, causing #F air MR effect. 1) It is possible to achieve 1 lill nil by 1 air reflux and maintaining the above-mentioned rotational speed ratio. Also, in operating areas where exhaust scrubbing is not required, e.g.
In the high-speed, high-load operating range, by setting the above-mentioned rotation speed ratio high, there is no need to bleed air into the intake air, and it is possible to perform the intake air while maintaining the effectiveness of the intake air.

(YJJ of the invention) In the present invention, the rotor of the pressure drum is driven by a scooper motor, and the rotor is driven by one motor. ! ,! 81 is controlled by the circuit so that the ratio between 1 rotation and engine rotation O changes according to Enson JII rotation (Jh),
% *t: RT bft is necessary] Military transfer is necessary (・
It is possible to achieve a large amount of exhaust M flow erosion, and in the operating range where the h-feeding effect is particularly important, it is possible to obtain a large amount of M, ``☆ yen. It's oil for cooking, and to top it all off, it's 42" to meet 11.
Compared to the case where the drive is driven by υ1, the supercharger's qj, : (
= 1st place is about ti, lI, and the flexibility on tl-'' for parts is greater.

(Question about actual h11 example) Basic configuration? a/I>:+? , JA Invention - Diesel engine 'a JLI L' is shown as an example, engine 1 has cylinder 2 and cylinder spatulas 1' 3 ', -4 with 11 holes in the upper end of cylinder 2, cylinder 2 Inside, the piston 4 is linked to the forward and backward link 1': IFI'
Then, the combustion chamber 12 is installed in the cylinder 2 by i+1ztf.

The cylinder head 3 is provided with a top 5 and a discharge port 6, and these intake ports 5 and 6 are connected to intake valves 7 and 11 and 8, respectively. Furthermore, the e-electro 51-1 pot supply channel 9 is connected to a tank (the ports 6 are connected to the exhaust passage 10, respectively. A pressure pump is connected between the supercharging passage 9 and the exhaust passage 10. An interceptor IJ is provided.

The supercharger 11 includes a case 14 shown in FIG.
It consists of a rotor 15 shown in Fig. 1 (bl), and is rotatably arranged in a case 14. As shown in Fig. The case 14 has end walls facing both ends of the rotor 1.5], 4a,
141), and one end wall 14a has an exhaust inlet 17.
and 4j [it discharge port 18 is formed, and the end wall 14 on the side
b Vc has an intake inlet 19 and an intake outlet 20 formed therein. As shown in FIG. 1, the exhaust passage 10 is connected to the exhaust port 17 of the case 14, and the
A bag passage 9 is connected to the bag passage 1. Furthermore, case 1
An exhaust parallel path 21 is connected to the horizontal air outlet 18 of No. 4, and an intake path 9U to 22 are connected to the air intake inlet 19.

An rrJ drive shaft 23 is fixed to the rotor 15, and the drive shaft 23 extends axially outward from one end of the rotor 15.

The drives +11i and 23F'i are rotatably supported by the intake housing 26 by bearings 24 and 25, and the rotor 15 is connected to one end thereof.
Support the meeting. The other end of the drive shaft 23 is connected to the frost through the Th, 6B clutch 27! A red one is connected to the output shaft of the kll motor 28. A control circuit 29 is provided to control the -1 full rotation of the motor 28. This control circuit 29
d1 engine! -! It serves as an output input to the rotation speed sensor 30 and generates an output proportional to the engine rotation speed. For example, if the criminal 17-tar 28 is a 7-Russ motor,
The lil Hu 11 path 29 generates a pulse output as the engine rotation increases and the needle increases. Complementary - the output of circuit 31 is j'l of motor 28
< jli14 pc l+i・River. ? +lj stop circuit 31iu, engine tQll engine rare material operating valve and λ- are accelerator pedal depression ht sensor 32 υ.
Kakeke Q-no, tail to engine rotation.

Then, the output of the control circuit 29 is fully corrected, and the rotation speed of the motor 28 is controlled. f3J', Figure 3 shows an example of the correction.
Ushida vertical axis - rotor 150 rotation speed (rpm)? ! - and under a certain engine speed, the rotation speed of the motor 28, that is, the ratio of the rotation speed of the rotor 15 &9 to the engine speed, is The change is made as shown by the solid line a in the figure. In addition, the output of the seventh sensor 32 is also applied to the clutch 27, and the clutch 27 is disengaged in the high load range.

In the negative 61 region where the operating engine 1 is DFN4+1 and the latch 27 is connected, the motor 28 is rotated by the output from the correction circuit 31 and the rotor 15i is rotated.
drive Engine intake Vi intake port 4 passage 22 air intake inlet 19 k IpA + gas passage 16 in rotor 15
When the JtP passage 16 sees the intake/discharge port 20, the supercharging is discharged into the combustion chamber 1 from the intake port 5.
2 will be introduced. On the other hand, the ejecting spear that comes out of the bleed port 6, 4 valves 1, is 1 no! Follow the sill1jl path 10 to the exhaust inlet 1
7 to the inside of the rotor 15 (discharged when the body 3I enters the wrong passage 16 and the passage 16 reaches the bleed air outlet 18 by one mouth) 111
It is discharged into the passage 21. In case 14, exhaust inlet 17
Since the intake and discharge ports 20 are oriented in relative amounts in the axial direction, one end of the gas passage J6 is connected to the exhaust introduction L-117I.
I (When opened, the H force generated in the Rne passage 16 is propagated through the narrow extension passage 16, and reaches the intake/discharge port 20 while increasing the full pressure H in the Illll passage 6, jM Intake air is sent out to 1rll path 9 with a boat-shaped rainbow.

Figure V shows the suction and air flow in the path 16 of the rotor 15 in a simplified manner. In the figure, it is assumed that the circuit 16 moves from top to bottom in the direction indicated by the arrow as the rotor 15 rotates 1ri1. 8
F! + It is moving while being moistened by the iJ4 road 16aU intake air near the top of the figure, and the course IGB is positioned H
1 Since the inner end of the pick-up path is closed 7, the intake air inside is in a stationary state. At one end of the continuing path 16b is Exhaust Monument U17
The pressure wave due to #l'*t is generated as shown at 33 in the figure. At this time, 010 people are being exhausted as shown by 34 at one end of the path 16b. In the courses 16c and 16d whose phase is shifted in the direction of rotation of the rotor 15, pressure waves propagate as shown at 33a and 33b, and the flow of υ1 air also advances along the courses as shown at 34a and 34b. However, at this point, the other end of the Vi)II+ path is closed, and the intake air near the Ng end is stationary. Furthermore, career path 1
6e and M (the end of the circuit opens to the intake/discharge port 2o)
At this point, a pressure wave is present at the intake/discharge port 20, and the intake air is discharged into the passage 9 in a state of force supply. In the flow paths 16a, 16g, and 16h, the discharge of the intake air continues, and the air flows in the direction of the flow of the air in the filter path. The course 161 is from the bleed air inlet 17 to 7! , cut off,
A bleed air stationary portion 34c is generated at the end of the inlet 17τ111. Seaway 161; l, +1L/shi (also blocked from the discharge port 20, intake and exhaust t) is in a stationary state.

In the passage 16, one end of the shaped passage opens into the 1]1 air discharge port 18, and an expansion part 35 of υ1 air is generated at the end, and as the phase advances, the expansion part 35 increases as shown in the figure. 777 within about 11η. Passage 16, L1 Tsukuda nA 1
llI opens into the air inlet 19, atmospheric pressure air flows into the air passage 11, and the expanded exhaust gas is pushed out into the exhaust air passage 21.

At rotation # of the rotor 15 shown in FIG. 9, the exhaust gas flowing into the passage 16 reaches +itl where Wb
The 1llj path 16 is blocked from the intake outlet 20.

Therefore, the C1 exhaust gas does not reach the supercharging passage 9 except for a small amount that remains after being mixed into the intake air due to contact with the intake air. FIG.
That is, the case is shown in which the ratio of the rotor rotational speed to the engine rotational speed is decreased. This state looks like rotor 15
The flow of the exhaust gas 84 is faster than the advance of the gas passage 16 due to the rotation of the gas, and the exhaust gas 84 reaches the discharge port 20 before the passage 16 is blocked from the intake discharge port 20 and is discharged into the supercharging passage 9. Ru. In this way, the ffi of the exhaust gas discharged into the supercharging passage 9 changes depending on the ratio of the rotor 150 rotation speed and the engine rotation speed, and this rotation speed ratio is changed by changing the rotation speed ratio to %ml as shown in FIG. As a result, the ridges of the bleed air mixed into the intake air change as shown by the dotted line in the same figure. Therefore, by controlling the rotational speed of the rotor 15, the exhaust gas recirculation can be controlled as desired. In FIG. 3, a dashed dotted line C indicates a line where the amount of exhaust gas recirculation is zero, and a dotted line located below the line C indicates a state in which intake air is flowing through the exhaust gas. Furthermore, in a high-load operation region, it is also possible to increase this rotational speed ratio to obtain a supercharging effect.

In addition, in a low load operation region, the clutch 27 may be disconnected based on a signal from the sensor 82, and the rotor 15 may be driven only by exhaust energy.

Furthermore, although the above-mentioned embodiments are of the reverse flow type, the present invention can also be applied to the straight flow type without any problem.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a supercharged engine showing an embodiment of the present invention, FIGS. 2(a) and (bl) are perspective views showing the case and rotor of the supercharger, and FIG. The diagrams illustrating an example of rotation speed control, Figure 1 and Figure S are exploded views of the rotor showing the action of the supercharger. ■ Engine, 9 Supercharging passage, ] 0 Exhaust passage, 11
・Supercharger, 14 Case, 15 Rotor, 16・Gas passage, 17-ii1 air inlet, 18...Exhaust discharge 0.
19 intake inlet, 20 intake outlet, 28 electric motor, 29... control n11 circuit. Figure 4 Figure 5

Claims (1)

[Claims] Separated multi-grain gas ILF penetrating in the direction of the rotational axis
circuit? TI"
:In the case, there is a 1 air inlet connected to the ennon conversion [α1] and a sliding hole in the position facing the end of the rotor marked q:+.
A discharge port for 4J1 air to the atmosphere is formed extending in the rotor rotational direction, and is further connected to the exhaust gas inlet.
In the 111 direction of the 111 direction of the rotation, the intake and discharge ports connected to the Ennon intake port are located in front of the ridge; , in a supercharged engine with a supercharger that can fully absorb pressure, in which each air intake port is configured to take in the entire atmosphere.
1 motor and 1 motor for turning 2 rotors and 1 motor! , the ratio of the number of revolutions per revolution of the 1-61] period rotor to the number of revolutions of 11? Efnon ii/II control device to control 1 motor (control side) so as to control the speed according to the state of rotation, and to make sound production 1 & no, which was set off.