JPS60150427A - Engine provided with supercharger - Google Patents

Abstract

PURPOSE:To surely prevent exhaust gas from mixing in intake-air upon high load operation of an engine, by driving a rotor in a pressure-wave supercharger by means of an electrical motor at a rotational speed such that the ratio between the rotational speed of the rotor and the rotational speed of the engine becomes high upon high load operation. CONSTITUTION:When a clutch 27 is in its load condition after an engine 1 is started, a motor 28 is rotated in association with an output from a compensating circuit 31 so that a rotor 15 rotates. Engine intake-air is introduced from an intake-air passage 22 into a gas passage 16 in the rotor 15 through an intake-air introducing port 19, and is discharged into a supercharging passage 9 when the passage 16 is opened. Exhaust gas flows through the gas passage 16 from an exhaust gas introducing port 17, and is discharged from an exhaust gas discharge port 18. With the rotational speed of the engine being maintained constant, the ratio between the motor or rotor rotational speed and the engine rotational speed is raised in accordance with engine load so that it increases as the engine load is increased. Further, upon low load operation of the engine the cluch 27 is disengaged so that the rotor 15 is operated only by exhaust gas.

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a supercharged engine, and more particularly to an engine with a pressure wave A bag machine in which air is compressed by the exhaust pressure generated in the engine exhaust oil passage and introduced into the combustion chamber. . (Prior art) The pressure wave H4tll, which uses the pressure generated in the engine 41 [air] path to fully compress the intake air and introduces this compressed suction plane into the combustion chamber, has been around for a long time. Ze? However, recently it has been attracting attention again because it has a higher supercharging effect during low-speed operation than a turbo supercharger with a missing exhaust turbine. This type of supercharger has 111 rotations
It consists of a rotor with a large number of mutually divided gas passages opening in one direction, and a case that rotatably supports the rotor with respect to one inch of its rotating shaft. The exhaust inlet and exhaust outlet are located opposite to each other.

The structure is such that the intake air is combusted at the intake and discharge ports, and the intake air introduced from the intake inlet into the gas passage in the rotor is pushed toward the intake and discharge ports by the pressure of the exhaust gas introduced from the exhaust inlet. ing. For this reason, the exhaust gas inlet and the air intake and discharge ports are formed at positions opposite to each other in the rotor axial direction with the rotor sandwiched therebetween. An example of this type of pressure wave supercharger is disclosed in Japanese Utility Model Application Publication No. 27G39. In the supercharged egg disclosed in this publication, a bleed air inlet and an exhaust outlet are provided on one end of the rotor, and an intake inlet and an intake outlet are provided on the other end of the rotor. The airflow and the intake airflow each change flow direction within the rotor. Although it is a so-called counterflow type, these types (in which the body flows through the rotor in the axial direction,
- Sadapi L# is also known, its structure and ni 11
1 a, Magazine [Internal Combustion Engine JVo1.15, A/79, /
971. , l. This 14 force wave J1'' 4-set machine is thought to be replaced by a diesel engine in the future, and it shows the following even during sluggish operation.
Since the intake air comes into contact with the bleed air within the rotor, a partial mixing sound of the intake air and the bleed air is generated. Depending on the continuous rotation range, this mixing can be seen as a υ-to-air flow effect, but during υ; fast-commercial load operation, the reduction in intake efficiency causes a decrease in output. (Object of the Invention) The present invention is to provide a weft in a pressure wave supercharger of the type described above, which can prevent serious exhaustion into the intake air during high-load operation and improve engine output. For all purposes. (Configuration of the Invention) In order to achieve the above object, the present invention has the following configuration. That is, the supercharged engine according to the present invention is equipped with a pressure wave supercharger, and the pressure wave supercharger has a large number of mutually separated gas passages that extend angularly in one direction of rotation. The rotor is comprised of a rotor and a case that rotatably supports the rotor through its rotational shaft, and the case has an exhaust inlet connected to an engine exhaust port and an exhaust port facing the end of the rotor. is discharged into the atmosphere (the J1 air outlet is offset in the direction of rotor rotation, and the air intake/discharge port connected to the engine is located on the opposite side of the rotational axis to the υl air inlet). The cans of 1111 are each formed with an intake inlet for inhaling the entire atmosphere.In the present invention, the rotor of the supercharger is driven to rotate. An electric motor is provided for the tl,
The rotational speed of this rotating motor is controlled so that the ratio of the rotor rotational speed to the engine rotational speed, that is, the ratio of the rotor rotational speed to the engine rotational speed, is high during high-load engine operation. It is controlled by the fifth instar. After pressure wave supercharging, when the gas passage in the rotor opens to the exhaust gas inlet as the rotor rotates, υ [air pressure is transmitted to this gas passage, and the zeto gas path of the gas iTU path (A pressure wave is generated at 1+11, and this pressure wave propagates inside the 51Tl passage at the speed of sound, compressing the intake air in the passage and reaching the other end. position t# i, '++, length of the gas passage in the rotor,
Rota's! 01 turn ↓ Yu, etc., W = properly determined ((), the pressure propagating in the gas curve can be transmitted to the temporary total intake air force, and the effect of urination can be obtained. The flow of exhaust gas in the passage is delayed from the pressure wave; it advances in the Bl passage, so if the gas passage is cut off from the gas discharge port before the exhaust flow reaches one end of the gas passage, the engine beriberi valve 1 1J# does not fit in. In general, the engine is shiny and shiny, and the rotation of the rotor is the same as the engine (the model is reduced in proportion to the G1 version).
I am a connoisseur. However, for example, in the area where nF air MtAt is required, the rotor rotation ay kib +
When + is controlled, the gas passage is blocked from the intake and discharge ports, and the exhaust gas flows negatively through the gas path and mixes into the intake.
Cedar I live in Qi reflux effect. Therefore, if such a -revolution ratio r is introduced, a sufficient output for the exhaust gas to the intake in the negative direction driving region will be obtained.Therefore, in the present invention, Takatsuki ] In the turbulent range, the above rotational speed ratio is increased to prevent VR air from entering the 1lja vessel, and the engine output is 1'J1 above'. (Invention (Effects of) In the present invention, the rotor of pressure sakagaeshi ← is driven by a rock motor, and the rotation base of the %+kJI motor is
Since the control device controls φ:i so that the ratio between the rotation speed of the rotor and the ennon lil transfer is equal to 1 during high load series, 11F air is mixed into the intake air during crystal negative operation.
(In fact, it is possible to stop the engine, and in addition, the mechanism of 811 is very quiet. In addition, the rotor is driven by an encoder crank-11. Compared to Ai, there is no restriction on the installation position of the supply wall, and the 171 message directly above the parts arrangement becomes thicker. The engine 1 has a cylinder head 3 with a J4'/ (=j) profiled at the upper end of the cylinder 2 and the g9 cylinder 2, and a piston 4 is movable in the cylinder 2. are oriented to form a combustion chamber 12 in the cylinder 2.The cylinder head 3 has a Vi intake port 5 and a The exhaust valve 8 is self-clamped.Furthermore, the intake port 5 is connected to the drain passage 9, and the exhaust port 6 is connected to the exhaust passage 10.
A H-force wave overpass 8S11 is installed between the H-C and H-Route 10. The 6P machine 11 has a case 14 shown in FIG. The rotor 15 is rotatably secured in the case 14.Transport diagram (bl
As shown in FIG. 2, the rotor 15 has a number of gas passages 16 which are separated from each other and extend in the axial direction. ! 7 temples. case 14
has end walls 14a and 14b facing both ends of the rotor 15, one end wall 148 is formed with a bleed air inlet 17 and an exhaust discharge port 18, and the other end wall 14bK is formed with an air intake inlet 1.
9 and an intake/discharge port 20 are formed. As shown in FIG. 7, the first inlet 17 of the case 14 is connected to the LD exhaust/exhaust circuit 1o, and the intake/discharge port 20 is connected to the supercharging passage 9. A discharge passage 21 is connected to the discharge port 18, and an intake passage 22 is connected to the intake inlet 19.A drive shaft 23 is fixed to the rotor 15, and this drive @11
23 is located axially outward from one end of the rotor 15. Drive at: 23 is 1 to the intake housing 26 by bearings 24.25! ,! The rotor 1 is supported at one end.
5? ! 7 Cantilever support. , 1, the other end of the moving shaft 23 is a drawer:
i % m1 motor 28 output d via clutch 27
11! is combined with A control circuit 29 is provided to fully control the rotation of the motor 28. This control circuit 2
9, the output is input to the engine rotation speed sensor 30, and an output proportional to the engine rotation speed is generated. For example, honey 1
If the u11 motor 28 is a pulse motor, the control circuit 29 generates a pulse output whose pulse force increases in proportion to the engine speed. The output of the control circuit 29 is sum 1 positive I! The output of the correction circuit 31 is input to the Jl path 31 and used to drive the motor 28. The correction circuit 1 circuit 31 corrects the output of the control circuit 29 according to the output of the accelerator pedal depression sensor 32 and the engine load J of the engine control member, for example, the output of the accelerator pedal depression sensor 32. ke control. Third
Figure 1 shows an example of the correction.
ll indicates the fuel injection unit (al, 1) Tl1 indicates the rotational speed (rpm) of the rotor 15, and at a certain engine rotational speed, the fuel phase drop injector Q corresponding to the engine load
Accordingly, the rotational speed of the motor 28, that is, the ratio of the rotational speed of the rotor 15 to the engine rotational speed is changed as shown by IwlI8 in the figure. In addition, the output of the sensor 32 is also given to the clutch 27, resulting in a low load 'i! L.I.
Clutch 27 is disconnected in the castle. Operation When the engine 1 is started and the clutch 27 is engaged in the negative speed region, the output from the motor 28Vi, Sodemasa 1Iji 31 causes the engine intake ae air, which drives the rotor 15, to turn P1. From the passage 22 through 19 intake inlets to the rotor 15. enters the gas passage 16 in the Rga passage 16
When it opens into the intake/discharge port 20, it is discharged into the supercharging passage 9 and introduced into the combustion chamber 12 from the intake port 5. On the other hand, the exhaust gas discharged from the exhaust port 6 flows from the air passage 10% C to the gas J outlet 16 in the rotor 15 from the inlet 17
When the passage 16 opens to the exhaust outlet 18, the exhaust gas is discharged into the exhaust passage 21. In the case 14, the exhaust inlet 17 and the intake outlet 20 are arranged at opposite positions in the ili+ direction, so that when one end of the gas passage 16 opens to the exhaust inlet L117, gas is generated in the 6B passage 16. The pressure wave propagates inside the passage 16, and while the inside air in the JIη passage 1 passage 6 is compressed, it is applied to the intake/discharge port 20, and is discharged into the intake passage 9 in a supercharged state. Figures i and t of the rotor 15 (intake and airflow in the 6-way J6) are shown schematically. hey,
As the rotor 15 with 16 passages rotates, IHj+ (assuming st+ ti
The 3+Th path 16at near the end of the figure moves in a state filled with intake air. Therefore, the internal air intake is in a static state.In the following passage 16b, one end is connected to the exhaust gas inlet 17, and a pressure wave due to the bleed air is generated as shown by IK33.At this time, the exhaust gas is in the passage It flows into one end of the rotor 16b as shown at 34.The passages 15c and 16d are advanced in phase in the rotational direction of the rotor 15.
The iJ pressure wave propagates to the channels shown by 33a and 33b,
The exhaust gases are also moving along the passage as shown at 34a and 34b, but at this point the other end of the passage is closed and the intake air near that end is stationary. moreover,
The end of the passage 16o opens to the intake outlet 20, and at this point the pressure wave has reached the intake outlet 20, and the intake air is discharged into the passage 9 in a supercharged state. The suction air continues to be discharged through the following furnace passages 16f, 16g, and 16hTa, and the exhaust gas flows through the furnace passages in the outflow direction of the intake air. The passage 161 is blocked from the JJ' air inlet 17.
, the end 1'L of the inlet 1711111, the stationary part 3 of the exhaust
4C occurs. The passages 161i and 161i are also blocked from the intake and discharge ports 20, resulting in drowsiness and a stationary state of exhaustion. In the passageway 16, one end of the passageway has a discharge of 1 noF air (ml).
18, an expansion part 35 of hard air is generated at the end d, and this expansion part expands within the passage as the phase progresses as shown in the figure. In the passage 16-e, the intake port 19 opens on the other side 1^1, and atmospheric pressure wall air flows into the passage. Push out the swollen air into the exhaust passage 21'j-
0 P; Not shown in figure 1q, when the U-Y 15 turns 0, the 1/S combined air flows into the hood J path 16 and reaches the intake/discharge port 20.
l'l V'-hue trace bl? , 16 is the intake/discharge port 20
〃・ra followed and worked hard. 7'ζTherefore, due to the jealous contact between the exhaust gas and the intake air,
7 pieces enter into the stage qi and remain, excluding 1 piece of water,
I don't want to give up on the supercharged Ik169. Stop 3゛ and I kJ, rotor 15 Ci')) li;l EIL
, 31 (q phase 5(), and the ratio of the rotor rotation speed to the cone non-cone rotation speed, that is, the ratio of the U-turn speed to the engine rotation speed. In this state, T: is negative CA due to the rotation of the rotor 15 -> 1. 34 is>+
! "Il'l'; 16 is from the intake outlet 20, H
I3 SanoLruf, : + V (-R 夛I11 Output 20 t
li*L, Sushang period J road 9yt-1Il is released. On top of this'), il! 'v Introduction) Discharge iL to JP path 9 υ1 si 1 knowledge VJ1 Rotation speed of rotor 15 and engine 1
It changes depending on the ratio of 1 to 1, and this 1ift to 8tt j'figure'5j! : When the VC speed is increased as shown in line a, the Jdei times of the button air mixed into the intake air change as shown above. Therefore, by controlling the rotor 15 in 1×1 rotation, it is possible to control the non-air recirculation by '+Ii' rather than by desiring 4 non-air recirculations. Third property I
Vr, the one-dot needle line C indicates a state where the recirculation P is zero, and indicates a state in which intake air is blown into the exhaust gas in the small pattern located below C. T, T
H1 button load operation is done. Raise this rotation lVf ratio to 3 to 1 to prevent the introduction of air into the intake air and improve quality.
・Make sure that benefits are not obtained. Oh, but load;! 1. In the lb region, the clutch 27klE+1 is activated by the signal from the sensor 32 to drive the rotor 15 only with exhaust energy! It may be done as follows. Although the above-mentioned embodiment is of a reverse flow type, the present invention can also be applied to a once-through type without any problems.

[Brief explanation of drawings]

Figure P is a schematic diagram of an engine with a full-pressure turbocharger according to an embodiment of the present invention;
FIG. 3 is a perspective view showing the engine speed and the rotor, and FIG. 3 is a diagram showing an example of rotor rotational speed control. DESCRIPTION OF SYMBOLS 1...°Engine, 9...Air supply and pick-up path, 10...Bleed air] Outlet path, 11...Supercharger, 14...Case, 15.
...Rota, 16...Party/Body) Ill Road, 17...1
North 91 entrance, j8...Ise Nl: 14! [l, 19
・・■νri Φ inlet, 20・・1〃(discharge port, 28・
・? lIl upper movement motor, 29...■l control circuit. Figure 4 Figure 5 [A

Claims (1)

[Claims] It consists of a rotor that has a large number of mutually divided gas passages that follow it in the direction of rotation, and a case 7 that rotatably supports the rotor assembly in place of its rotation axis, and the case has 111 inscriptions. At the position 1 facing the end of the rotor,
The live air inlet connected to the engine exhaust port and the exhaust outlet that discharges air into the atmosphere are deviated in the direction of one rotation of the rotor, forming a throat. In addition, the intake and discharge ports connected to the engine intake port are connected to the rotating shaft 1 with respect to the 4th exhaust discharge port.
In the opposite direction (IIll place 1w, the inlet neighboring population which inhales all the atmosphere is
In a supercharged retrofit engine with 774 staff, 111
The screw for rotating the rotor into the rotating part IILl+'i-
n11m1 for 1 motor and engine 1 speed
The ratio of the (b) revolutions of the rotor is determined by Koninson.
I'm the only one in the world, so I'm trying to make the most of my six-year-old self.
b1. A mixed retrofitted engine characterized by being equipped with a luff III lulli # mount.