WO2008046301A1

WO2008046301A1 - A rotary valve of an internal combustion engine intake and exhaust system

Info

Publication number: WO2008046301A1
Application number: PCT/CN2007/002922
Authority: WO
Inventors: Guohua Xie
Original assignee: Guohua Xie
Priority date: 2006-10-18
Filing date: 2007-10-11
Publication date: 2008-04-24

Abstract

A rotary valve of an internal combustion engine intake and exhaust system includes an inner rotor (1), an outer rotor (2) jacketed on the inner rotor and a valve body (3) set outside of the outer rotor, wherein the inner rotor (1) is hollow, and one end is closed, the other is an open-end, the sides of the inner rotor (1), the outer rotor (2) and the valve body (3) have at least one set of side openings correspondingly, when the inner rotor and the outer rotor rotate inversely, the same set of the side openings are turned on discontinuously, the inner rotor and the outer rotor are connected with a drive unit controlled by timing gear separately. The rotary valve is placed in the intake path or exhaust path of the internal combustion engine to minimize the vibration and the voice, and the engine can change phase conveniently.

Description

Rotary valve of intake and exhaust system of internal combustion engine

Technical field

The present invention relates to a timing valve mechanism for an internal combustion engine, and more particularly to an internal combustion engine valve.

Background technique

At present, the typical four-stroke internal combustion engine system, the valve control technology relies on the camshaft transmission, all adopt the valve-cam type gas distribution mechanism, which includes the cam shaft, the tappet, the tappet, the rocker arm, the valve and the like. The large number of parts and the poor rigidity are the distinguishing features of the valve train, so it is easy to excite vibration and noise. At the same time, in order to reduce the partial load pumping loss, full load and multiple intake, people have been studying variable control valves, but the current variable control valve adjustment system with camshaft is more complicated. Summary of the invention

The object of the present invention is to provide a rotary valve for an internal combustion engine intake and exhaust system which has less vibration and noise and can meet the requirements of the opening and closing duration, and at the same time makes the existing internal combustion engine system more convenient to implement variable phase, and can The existing intake of the internal combustion engine is implemented in sections into the cylinder, and the exhaust is implemented as a segmented discharge cylinder.

In order to achieve the above object, a rotary valve for an intake and exhaust system of an internal combustion engine includes an inner rotor, an outer rotor that is sleeved on the inner rotor, and a valve body that is located outside the outer rotor. The inner rotor is hollow and closed at one end, and the other end is closed. For the open end, the inner rotor, the outer rotor and the side surface of the valve body are respectively provided with corresponding at least one set of side openings; when the inner rotor and the outer rotor are reversely rotated, the inner rotor, the outer rotor and the side faces of the valve body are open at the same side. Continuously connected; the inner rotor and the outer rotor are respectively connected to the transmission mechanism controlled by the timing gear.

In operation, the side opening on the valve body or the te-end inlet in the open end of the inner rotor, and the other end as the outlet, when moving to the inner rotor, the outer rotor and the side opening of the valve body overlap or partially overlap each other, the rotary valve That is, in the open state, in other states, the rotary valve is in a closed state; the transmission mechanism controlled by the timing gear of the internal combustion engine transmits power to the inner rotor and the outer rotor, so that the inner rotor and the outer rotor rotate in opposite directions, so that the inner rotor and the outer rotor Same side opening on the side of the valve body

Confirmation When the side opening is simultaneously turned on, the valve is opened, the air can be inflated or ventilated, the setting of the side opening position, and the phase adjustment when interlocking with the timing gear can make the timing of the side opening turn on. The timing of intake or exhaust of the internal combustion engine enables the present invention to replace the intake and exhaust valves of existing internal combustion engines. For the newly developed internal combustion engine, the rotary valve of the present invention can be directly used in the cylinder head instead of the valve. Since the invention adopts a rotary valve, the vibration and noise of the valve of the internal combustion engine can be reduced; when the rotary valve is in operation, it does not interfere with the piston, and the variable phase is facilitated; the inner rotor and the outer rotor rotate in opposite directions, so that the rotary valve is activated. The closing speed is faster, and at the same time, the opening and closing duration of the rotary valve can be selected in a larger range, and the requirements for the opening and closing duration of the rotary valve of the internal combustion engine can be fully satisfied. With the existing internal combustion engine, the existing intake valve mechanism with camshaft can be changed on the basis of the change of the existing system, that is, the valve of the present invention is provided in the existing intake system. The mechanism of the simple variable intake system adjustment mechanism, in short, is that the phase of the gas that enters the cylinder through the gas of the present invention can be selected and variable; likewise, the valve of the present invention can be disposed in the existing exhaust system. The existing control valve mechanism with camshaft is changed into a simple variable exhaust system adjustment mechanism. In short, the exhaust gas flowing out of the cylinder is passed through the rotary valve of the present invention, and the phase of the exhaust gas flow can be selected and variable. In this way, the phase of the system can be more easily implemented and variable, thereby reducing fuel consumption. Providing a plurality of valves of the present invention in the inlet system enables the existing intake system to enter the gas segment of the cylinder, facilitating the implementation of exhaust gas recirculation and stratified combustion; and providing a plurality of valves of the present invention in the exhaust system, In order to segment the gas of the existing exhaust system out of the cylinder, and for the supercharged internal combustion engine, the energy utilization rate of the exhaust gas can be further improved, and the exhaust gas recirculation can be conveniently implemented. The present invention can be applied to internal combustion engines such as diesel engines and gasoline engines.

In order to reverse the inner rotor and the outer rotor, the transmission mechanism may be configured as follows: the transmission mechanism is provided by a driven external gear connected to the closed end of the inner and the rotor, and the corresponding end of the outer rotor. The internal gear is composed of two co-rotating active external gears respectively installed at the ends of the two input shafts, wherein one of the driving external gears meshes with the driven external gear, and the other of the driving external gears meshes with the driven internal gear . Second, the transmission mechanism includes a slave connected to the closed end of the inner rotor The external gear, the driven internal gear provided at the corresponding end of the outer rotor, an active external gear mounted at the end of the input shaft, and the driven external gear mesh with the driven external gear and the driven internal gear, respectively. During operation, the input shaft and the timing gear can be directly or indirectly linked to realize the reverse rotation of the inner rotor and the outer rotor, and an angle advancer can be disposed between the input shaft and the timing gear, which can more conveniently adjust the rotary valve. Turn on the phase.

In order to strengthen the structural strength of the side openings of the inner rotor and the outer rotor, the side openings of the inner rotor and the outer rotor are provided with reinforcing ribs. Similarly, in order to enhance the structural strength of the side opening of the valve body, the side opening of the valve body may also be provided with reinforcing ribs.

The inner rotor, the outer rotor and the valve body side opening may be a group; the valve body side opening or the open end of the inner rotor is an intake end, and the remaining end is an air outlet end. The inner rotor, the outer rotor and the side opening of the valve body may also be in multiple groups, for example, the number of side openings of the inner rotor, the outer rotor and the valve body is equal to the number of cylinders, the open end of the inner rotor is the intake end, and the sides of the valve body are open at the sides. For the outlet end, the side opening phase of the valve body is the same, and the phase angles of the inner rotor and the outer rotor side opening are wrong. When the input shaft rotates, the inner rotor and the outer rotor side opening are sequentially connected to the valve body side opening; The end and the intake end are interchangeable. The above technical solution can make the gas of the plurality of exhaust pipes merge into the same pipe through the plurality of sets of side openings, so that the gas entering the same pipe has no disturbance or less interference; or the gas in the same pipe passes The plurality of sets of side openings respectively flow the gas into different pipes, so that the gas entering the plurality of pipes has respective valve timings; that is, one rotary valve can control the intake or outflow of the plurality of cylinders, such as an intake pipe. The gas can be sent to the corresponding cylinder through the rotary valve of the present invention according to the timing relationship of each single cylinder of the internal combustion engine, so that the mechanism of the rotary valve is further simplified; for example, the gas of an exhaust pipe of the supercharged internal combustion engine can be exhausted. The energy section is fed into the corresponding exhaust pipe by the rotary valve of the present invention, so that the energy loss of the exhaust gas in the high energy section is small. The gases of the plurality of exhaust ducts respectively enter the plurality of timings of the present invention having a timing relationship The rotary valve of the mouth merges into the same pipe, so that there is no interference or interference between the gases entering the same pipe, so that the gas entering the same pipe has no interference or less interference to the cylinder providing the gas; The exhaust gas discharged from each cylinder initially flows into the same exhaust pipe, and the exhaust gas recirculation can be conveniently implemented in both the non-supercharged and supercharged internal combustion engines. For the supercharged internal combustion engine, the energy utilization rate of the exhaust gas can be further improved.

DRAWINGS

Figure 1 is a schematic structural view of the present invention;

Figure 2 is a cross-sectional view taken along line M-M of Figure 1;

Figure 3 is an exhaust opening and closing phase diagram of the rotary valve;

Figure 4 is a schematic view of still another structure of the present invention:

Figure 5 is a cross-sectional view taken along line M1-M1 of Figure 4;

Figure 6 is a cross-sectional view taken along line M2 - M2 of Figure 4;

Figure 7 is a cross-sectional view of Mi Mi of Figure 4;

Figure 8 is a schematic diagram of an exhaust section device of an eight-cylinder four-stroke supercharged internal combustion engine

Figure 9 is a schematic diagram of the exhaust sectioning device of a four-cylinder four-stroke turbocharged diesel engine.

Among them, 1 inner rotor, 2 outer rotor, 3 valve body, 4 driven external gear, 5 driven internal gear, 6, 8 input shaft, 7, 9 active external gear, 10, 11 rib, for rotary valve from opening To the angle of closing; θ ₂ represents the angular difference between the rotary valve and the bottom dead center; θ ₃ represents the angular difference between the rotary valve and the top dead center.

detailed description

Example 1:

As shown in FIG. 1 to 2, the rotary valve of the intake and exhaust system of the internal combustion engine of the present invention comprises an inner rotor 1, an outer rotor 2 fitted on the inner rotor, and a valve body 3 located outside the outer rotor. The inner rotor 1 is hollow and closed at one end. The other end is an open end, and the inner rotor 1, the outer rotor 2 and the side surface of the valve body 3 are respectively provided with opposite sides a set of side openings; the closed end of the inner rotor 1 is connected to a driven external gear 4, the corresponding end of the outer rotor is connected to a driven internal gear 5, and an active external gear 7 is mounted at the end of the input shaft 6, actively The external gear 7 meshes with the driven external gear 4, and the other is mounted at the end of the input shaft 8 and the driven external gear 9 meshes with the driven internal gear 5; the driving external gear 7 and the driving external gear 9 rotate in the same direction, thereby being driven The external gear 4 and the driven internal gear 5 rotate in the opposite direction; The inner rotor 1 rotates: The outer rotor 2 rotates: The internal combustion engine camshaft speed = 1 : 1: 1 (In order to realize the quick opening and closing of the exhaust rotary valve, the inner rotor speed is generally selected: Outer rotor speed: Internal combustion engine camshaft speed = 1: 1: 1, 2: 1: 1, 3: 1: 1, 4: 1: 1, 5: 1: 1, just because, in the working angle of the rotary valve Next, it is desirable that the inner rotor and the outer rotor are as fast as possible.) The greater the rotational speed of the inner and outer rotors, the faster the opening and closing speed of the rotary valve, but the smaller the adjustable range (duration) of the rotary wide from open to closed; After the inner rotor 1 and the outer rotor 2 are determined in rotation, the inner rotor 1 is on the upper side The mouth angle a, the side opening angle β of the outer rotor 2, determines the angular range of the rotary valve from opening to closing; at the same time, the rotating side opening length L corresponds to different opening sections; the inner rotor 1 side opening is provided with the reinforcing rib 10, the outer rotor The side opening is provided with a reinforcing rib 11, that is, the side opening of the inner rotor 1 can be composed of a plurality of small side openings separated by the reinforcing ribs 10. The side opening of the outer rotor 1 is also separated by a plurality of small ribs 11 The side opening is composed; an advanceer is arranged between the input shaft 6 and the timing gear, and an advanceer is arranged between the input shaft 8 and the timing gear.

During operation, when the movement to the inner rotor, the outer rotor and the side opening of the valve body overlap or partially overlap each other, the rotary valve is in an open state, and in other states, the rotary width is in a closed state; due to the reverse rotation of the inner rotor and the outer rotor, the rotation The opening and closing speed of the valve is a superposition of the speeds of the inner rotor and the outer rotor, so that the rotary valve can achieve a large opening degree and can be quickly opened and closed; an advanceer can be set in the input mechanism, and the advancer is a product existing in the prior art, The input mechanism corresponds to the timing of the internal combustion engine. By changing the relative position of the output and the input, the output phase is changed to meet the phase requirement of the internal combustion engine. Figure 3 is the exhaust opening and closing phase diagram of the rotary valve, indicating the angle of the rotary valve from open to closed, according to the specific requirements of the internal combustion engine, determine its value; θ ₂ represents the angular difference between the rotary valve and the bottom dead center, through the transmission mechanism The advancer can be dynamically adjusted, that is, the value of θ ₂ varies with the change of the rotational speed and the load, so that the phase of the rotary valve is variable. θ ₃ represents the angular difference between the rotary valve and the top dead center, and changes synchronously with θ ₂ .

Example 2

As shown in FIG. 4-7, it is a rotary valve of the internal combustion engine exhaust system, which comprises an inner rotor 1, an outer rotor 2 which is sleeved on the inner rotor and a valve body 3 which is located outside the outer rotor. The inner rotor 1 is hollow and closed at one end. The other end is an open end, and the inner rotor 1, the outer rotor 2 and the side surface of the valve body 3 are respectively provided with corresponding i-group side openings, i-cylinder number; the closed end of the inner rotor 1 is connected with a driven external gear 4, The respective ends of the outer rotor are connected to a driven internal gear 5, a driving external gear 7 mounted at the end of the input shaft 6, and the driving external gear 7 meshes with the driven external gear 4 and the driven internal gear 5, respectively; 1 Speed: External rotor 2 speed: Internal combustion engine camshaft speed = 3: 1: 1; The transmission mechanism of this embodiment is relatively simple, but the inner rotor 1 speed: outer rotor 2 speed: the internal combustion engine camshaft speed ratio is limited, can only take 5: 1: 1, 4: 1: 1, 3: 1: 1, 2: 1: 1, The selection range of the opening and closing duration of the rotary valve is correspondingly smaller. One ·

During operation, when moving to the inner rotor, the outer rotor and the side of the valve body overlap or partially overlap each other, the rotary valve is in the open state. In other states, the rotary valve is in the closed state; due to the reverse rotation of the inner rotor and the outer rotor The opening and closing speed of the rotary valve is the superposition of the inner rotor and the outer rotor speed, so that the rotary valve can achieve a large opening and can be quickly opened and closed. The side opening of the valve body has the same phase, and the phase angles of the inner rotor and the outer rotor side opening are wrong. When the input shaft rotates, the inner rotor and the outer rotor side opening are sequentially connected to the valve body side opening.

Application example 1

Figure 8, is a supercharged internal combustion engine exhaust segment device, the exhaust segment device is eight cylinders (pair The exhaust section is optimized for the four-stroke diesel engine with a cylinder number of I-I, of which three are rotary valves. The exhaust section device includes a supercharger and a single cylinder exhaust passage, a turbine 200 of the supercharger 100, the turbine 200 is provided with three turbine intake ports and a turbine exhaust port, and the exhaust port of the supercharger is connected. Exhaust pipe mains 300; 8 single cylinder exhausts 1-P, 2-P, 3-P, 4-P 5-P, 6-P, 7-P, 8-P directly with each single cylinder exhaust The valve outlets are connected; each of the single cylinder exhaust passages and the three exhaust pipes are respectively provided with rotary valves Fl, F2, F3 which can be quickly opened and closed, and three exhaust pipes G1, G2, G3 and the turbine 200 respectively Three corresponding exhaust air inlets are connected; the opening and closing of each single cylinder rotary valve corresponds to the phase of the corresponding exhaust valve timing, so that the complete exhaust process of each single cylinder is divided into three short Exhaust gas duration, and exhaust gas of 3 segments of exhaust gas into the corresponding Gl, G2, G3 exhaust pipes; each open end of the rotary valve is connected with the corresponding exhaust pipe inlet, each rotation The inner rotor, the outer rotor and the side of the valve body are respectively provided with corresponding sets of 8 valve ports, and the rotary valve F1 respectively corresponds to 1-1 to 8-1 (the valve port corresponding to the rotary valve F2 is 1-2 to 8-2, rotation The valve port corresponding to the valve F3 is 1-3 to 8-3. The phase angles of the valve ports on the inner rotor and the outer rotor side of each rotary valve are wrong. The closed end of each inner rotor is connected via a shaft. The corresponding end portions of the outer gear and the outer rotor are provided with driven internal gears, and the driving gears of each rotary valve installed at the end of the input shaft are respectively meshed with the driven external gear and the driven internal gear, and the input shaft and the timing gear are transmitted. connection. Through the relative position change of the valve port position, the opening and closing of the rotary valve port can be realized; the mouths of the inner rotors of the three valves are respectively connected to the corresponding exhaust pipes, and the valve ports on the side of the valve body are respectively connected to the corresponding cylinders. Exhaust passage; 8 sets of valve ports in each rotary valve correspond to the opening and closing angle corresponding to the phase of the valve timing of the corresponding exhaust valve; inner rotor speed: outer rotor speed: internal combustion engine camshaft speed = 3 : 1: 1; An angle advanceer Tl is provided between the input shaft of F1 and the timing gear of the diesel engine. An angle advanceer T2, an input shaft of F3 and a diesel engine are provided between the input shaft of F2 and the timing gear of the diesel engine. There is no angle advancer between the timing gears. In this way, the three valve ports of each single cylinder divide the complete exhaust process of the corresponding cylinder into successively connected, adjacent two process parts overlap, three short exhaust durations, and three short exhaust durations. The exhaust gas enters the three exhaust pipes Gl, G2, G3, respectively, and makes it in a single cylinder. The exhaust gas of the exhaust phase of the front phase enters the exhaust pipe G1, and the exhaust gas of the exhaust phase of the phase in the middle of the single cylinder enters the exhaust pipe G2, and the exhaust gas of the exhaust phase of the phase after the single cylinder enters the exhaust gas The gas pipe G3; the three valve ports of each single cylinder can also make the phase of the exhaust gas entering the exhaust pipe G1 have the same phase, and the phase of the exhaust gas entering the exhaust pipe G2 is in the same phase. The same is true, and the phase of the exhaust gas flow entering the exhaust pipe G3 is also the same.

During operation, the rotary valve of each cylinder divides the single-cylinder exhaust into three overlapping, sequentially connected exhaust durations; through the relative position change of the valve port position, the opening and closing of the rotary valve port can be realized, so that The segmented exhaust gas having the same exhaust energy enters the same exhaust pipe, and the exhaust gas available for each short exhaust gas exhaust of the single cylinder is different in energy, such as the energy in the free exhaust phase is greater than the forced exhaust phase. According to the specific cylinder number and usage requirements of the supercharged internal combustion engine, the complete exhaust process of the single cylinder is divided into several parts, so that more exhaust cylinders with the same short exhaust duration are connected to the same exhaust pipe and the single cylinder is connected. There is no interference or less interference, and the available exhaust energy E1 loss is small. At the same time, due to the increase of the number of cylinders in the same exhaust pipe, the pressure oscillation of the exhaust pipe is reduced, so that the turbine efficiency ητ is higher; The exhaust energy Ec is reduced, so that the effective energy loss of the supercharged internal combustion engine is small; the basic principle of dividing the exhaust duration by the single-cylinder rotary valve is: the more the number of cylinders enters an exhaust pipe, the single-cylinder rotary valve is divided The more the exhaust gas duration, the smaller the continuous angle of each exhaust duration; the angular advancer can be partially or completely set between the input shaft and the timing gear, which can simultaneously improve the low working condition and high Working condition performance.

Application Example 2 As shown in Fig. 9, a four-cylinder four-stroke (corresponding to cylinder number I-IV) diesel engine exhaust sectioning device, in which eight rotary valves are used. The exhaust section device includes a supercharger 100 and four single-cylinder exhaust passages, the single-cylinder exhaust passage is directly connected to the single-cylinder exhaust valve outlet, and the turbine 200 of the supercharger 100 is provided with a turbine intake port. And a turbine exhaust port, the exhaust port of the supercharger is connected to the exhaust manifold 300; 4 single-cylinder exhaust passages 1-P, 2-P, 3-P, 4-P directly with each single cylinder exhaust The valve outlets are connected; each single cylinder exhaust passage is connected to the open end of the inner rotor of two rotary valves, and the corresponding rotary valve of each cylinder is 1 One to four to one and one to two to four to two, each of the rotary valves has the same structure. The inner rotor, the outer rotor and the side of the valve body of each rotary valve are respectively provided with a corresponding set of valve ports; the closed end of each inner rotor is connected to a driven external gear through the shaft, and the corresponding end of the outer rotor is provided with The internal gear, each of the rotary valves mounted on the end of the input shaft meshes with the driven external gear and the driven internal gear, respectively. The total number of valve ports on the inner rotor, the outer rotor and the valve body side of each single cylinder is two, and the two valve ports are respectively connected to two corresponding exhaust pipes. Inner rotor speed: External rotor speed: Internal combustion engine camshaft speed = 2: 1: 1; The opening and closing of the rotary valve in each single cylinder corresponds to the phase of the valve timing of the corresponding exhaust valve, and the corresponding cylinder The complete exhaust process is divided into two short exhaust durations, and two short exhaust durations enter the two exhaust pipes G1 and G2, respectively. The exhaust pipe G1, the exhaust pipe G1 is connected to the turbine inlet of the turbine 200, the exhaust gas with the phase lag in the last stage enters the exhaust pipe G2, and the exhaust pipe G2 directly connects to the exhaust pipe 300.

During operation, the rotary valve of each cylinder divides the single-cylinder exhaust into two overlapping, sequentially connected exhaust durations; through the relative position change of the valve port position, the opening and closing of the rotary valve port can be realized, so that The segmented exhaust gas of the same exhaust energy enters the same exhaust pipe, so that the exhaust gas energy loss is small, the exhaust gas negative work of the internal combustion engine is reduced, and the internal combustion engine is fully ventilated.

Claims

Rights request

A rotary valve for an intake and exhaust system of an internal combustion engine, comprising: an inner rotor, an outer rotor disposed on the inner rotor, and a valve body disposed outside the outer rotor, the inner rotor being hollow and closed at one end, and the other end being an open end The inner rotor, the outer rotor and the side surface of the valve body are respectively provided with corresponding at least one set of side openings; when the inner rotor and the outer rotor are reversely rotated, the inner side rotor, the outer rotor and the side surface of the valve body are intermittently connected The inner rotor and the outer rotor are respectively connected to the transmission mechanism controlled by the timing gear.

2. The rotary valve of an intake and exhaust system of an internal combustion engine according to claim 1, wherein: said transmission mechanism is provided by a driven external gear and a corresponding end of the outer rotor connected to the closed end of the inner rotor. The driven internal gear and the two co-rotating active external gears respectively installed at the ends of the two input shafts, one of the active external gears meshes with the driven external gear, and the other of the driven external gear and the driven internal gear Engaged.

3. The rotary valve of an intake and exhaust system of an internal combustion engine according to claim 1, wherein: the transmission mechanism includes a driven external gear coupled to the closed end of the inner rotor, and the corresponding end of the outer rotor is provided with a follower Internal gear. An active external gear mounted at the end of the input shaft, the active external gear is respectively engaged with the driven external gear and the driven internal gear.

A rotary valve for an intake and exhaust system of an internal combustion engine according to any one of claims 1 to 3, characterized in that: the side opening of the inner rotor and the outer rotor is provided with a reinforcing rib.

The rotary valve of the intake and exhaust system of an internal combustion engine according to any one of claims 1 to 3, wherein: the inner rotor, the outer rotor and the valve body are open to one side; the valve body side opening or the inner rotor opening Either end of the end is the intake end and the remaining end is the outlet end.

6. A rotary valve for an intake and exhaust system of an internal combustion engine according to any one of claims 1 to 3, The characteristics are as follows: the number of side openings of the inner rotor, the outer rotor and the valve body is equal to the number of cylinders, the open end of the inner rotor is the intake end, the side openings of the side of the valve body are the outlet end, and the side opening of the valve body has the same phase, the inner rotor The phase angle of the side opening of the outer rotor is wrong. When the input shaft rotates, the inner rotor and the outer rotor side opening are sequentially connected to the valve body side opening.

7. The rotary valve of an intake and exhaust system of an internal combustion engine according to any one of claims 1 to 3, wherein: the number of side openings of the inner rotor, the outer rotor and the valve body is equal to the number of cylinders, and the open end of the inner rotor is exhausted. The side opening of each side of the valve body is the intake end, the side opening of the valve body has the same phase, and the phase angles of the inner rotor and the outer rotor side opening are wrong. When the input shaft rotates, the inner rotor, the outer rotor side opening and the valve The body side openings are sequentially turned on.