Automobile exhaust selector valve and hybrid engine

Abstract

The utility model provides an automobile exhaust selector valve and a hybrid engine, which comprise a pipe shaped like a Chinese character'bu ', a linkage valve core and a control actuating mechanism, the pipe shaped like the Chinese character'bu' is provided with a main flow channel and an auxiliary flow channel, the auxiliary flow channel is arranged on the side of the main flow channel and is communicated with the main flow channel, and the linkage valve core is arranged on the pipe shaped like the Chinese character'bu '. The linkage valve element is rotatably arranged in the main flow channel and used for adjusting the communication sectional area of the main flow channel and the auxiliary flow channel, the control execution mechanism is used for driving the linkage valve element to rotate and be positioned in the main flow channel, the linkage valve element comprises a main valve plate and an auxiliary valve plate, and the auxiliary valve plate is fixedly arranged on the main valve plate. The main valve plate is rotatably arranged in the main flow channel and used for adjusting the opening range of the main flow channel, and the auxiliary valve plate is used for synchronously moving along with the main valve plate so as to synchronously adjust the opening range of the auxiliary flow channel when the main valve plate moves. The actuating mechanism is controlled to drive the main valve plate to rotate, and the main valve plate can drive the auxiliary valve plate to move together to form linkage and positioning when rotating, so that the relative gas output of the main flow channel and the auxiliary flow channel is accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engines, and in particular to an automobile exhaust selection valve and a hybrid engine. Background Art

[0002] Hybrid vehicles are a form of new energy vehicles that can run in electric mode or traditional fuel mode. Generally, when there is sufficient electricity, the electric mode is used, and the electric motor drives the vehicle; when there is insufficient electricity, the traditional fuel mode is used, and the engine is involved in the driving or power generation. When the current automobile exhaust pipe is in use, the exhaust gas generated by the engine is directly discharged after being treated by the three-way catalytic converter inside the exhaust pipe, so that the heat contained in the exhaust gas directly enters the air, which not only causes certain environmental pollution, but also causes waste. Therefore, it is necessary to use valve technology to control the emission of exhaust gas, improve the utilization efficiency of exhaust gas heat energy, and reduce the pollution of exhaust gas to the air.

[0003] The current EGR valve technology is to control the electromagnetic valve to open in time according to the engine speed, load, temperature, intake flow, and exhaust temperature through the EGR engine control computer, that is, the ECU. The vacuum of the intake pipe enters the vacuum membrane chamber of the EGR valve through the electromagnetic valve, and the diaphragm pull rod opens the EGR valve. A small part of the exhaust gas enters the intake system through the EGR valve, and enters the cylinder to participate in the combustion after mixing with the mixed gas. A small part of the exhaust gas enters the cylinder to participate in the combustion of the mixed gas, which reduces the temperature in the cylinder during combustion. Since NOx is generated under high temperature and oxygen-rich conditions, the generation of NOx is suppressed, thereby reducing the NOx content in the exhaust gas. However, excessive exhaust gas participation in recirculation will affect the ignition and performance of the mixed gas, thereby affecting the power of the engine, especially when the engine is idling, low speed, small load and cold engine, the recirculated exhaust gas will significantly affect the engine performance. The existing EGR valve can only be opened and closed, and it is impossible to perform more precise exhaust selection control.

[0004] In summary, there is an urgent need for an automobile exhaust selector valve and a hybrid engine to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide an automobile exhaust selector valve, which aims to solve the problem that the small flow channel in the prior art can only be opened or closed and the emission of recirculated exhaust gas cannot be accurately controlled. The specific technical solution is as follows:

[0006] An automobile exhaust selection valve comprises a jack-type pipe, a linkage valve core and a control actuator, wherein the jack-type pipe is provided with a main flow channel and an auxiliary flow channel, the auxiliary flow channel is arranged at the side of the main flow channel and is connected with the main flow channel, the linkage valve core is arranged on the jack-type pipe, the linkage valve core is rotatably arranged in the main flow channel for adjusting the connecting cross-sectional area of ​​the main flow channel and the auxiliary flow channel, the control actuator is used to drive the linkage valve core to rotate and position in the main flow channel, the linkage valve core comprises a main valve plate and an auxiliary valve plate, the auxiliary valve plate is fixedly arranged on the main valve plate, the main valve plate is rotatably arranged in the main flow channel for adjusting the opening range of the main flow channel, and the auxiliary valve plate is used to move synchronously with the main valve plate to synchronously adjust the opening range of the auxiliary flow channel when the main valve plate moves.

[0007] Furthermore, the main valve plate is rotatably arranged in the main flow channel, the rotation center axis of the main valve plate is eccentrically arranged relative to the circular inlet cross-section of the auxiliary flow channel, and the auxiliary valve plate is eccentrically arranged outside the main valve plate through a connecting rod.

[0008] Furthermore, the cross section of the main channel is circular, and the surface of the auxiliary valve plate used for sealing is an arc surface.

[0009] Furthermore, the main valve plate is an elliptical valve plate.

[0010] Furthermore, the main valve plate is rotatably arranged in the main flow channel through an assembly shaft, and one end of the assembly shaft extends out of the OUT-shaped pipeline.

[0011] Furthermore, the control actuator includes a driving mechanism and a connecting rod mechanism, one end of the connecting rod mechanism is connected to the assembly shaft, and the other end of the connecting rod mechanism is connected to the driving mechanism. The driving mechanism drives the connecting rod mechanism to drive the assembly shaft to rotate and position around the rotation center axis.

[0012] Furthermore, the connecting rod mechanism includes an active crank, a connecting rod and a driven crank, the active crank is connected to the output shaft of the driving mechanism, the driven crank is fixedly connected to the extended end of the assembly shaft, one end of the connecting rod is hinged to the active crank, and the other end of the connecting rod is hinged to the driven crank.

[0013] Furthermore, the connecting rod is arranged in a Z shape, and the hinge points at both ends of the connecting rod are located in different horizontal planes.

[0014] Furthermore, a clearance groove is provided on the Bu-shaped pipeline, which is arranged in the main flow channel and upstream of the rotation center axis of the main valve plate, and the clearance groove is arranged corresponding to the auxiliary valve plate.

[0015] Furthermore, the linkage valve core is made of high temperature resistant material.

[0016] The utility model also provides a hybrid vehicle engine, comprising an engine body, an exhaust pipe, a battery pack preheating device and the above-mentioned vehicle exhaust selection valve, wherein the exhaust pipe is arranged on the engine body, the main flow channel of the vehicle exhaust selection valve is connected to the exhaust pipe, and the battery pack preheating device is connected to the auxiliary flow channel of the vehicle exhaust selection valve to input part of the gas into the battery pack preheating device.

[0017] Furthermore, it also includes an intake pipe and an opening and closing valve. The auxiliary flow channel is connected to the intake pipe to input part of the gas into the intake pipe. The opening and closing valve is arranged between the auxiliary flow channel and the intake pipe.

[0018] The application of the technical solution of the utility model has the following beneficial effects:

[0019] In the initial state, the auxiliary valve plate is blocked at the opening and connecting position of the auxiliary flow channel to completely close the auxiliary flow channel. At this time, the main flow channel is in a fully open state, and all exhaust gas is discharged from the main flow channel without any recycling. When the exhaust gas needs to be partially or completely recycled, the main valve plate is driven to rotate and position by controlling the actuator. When the main valve plate rotates, it will drive the auxiliary valve plate to deflect and move together to form a linkage. The auxiliary valve plate gradually deflects and avoids, so that the auxiliary flow channel is slowly opened. The main valve plate gradually rotates and blocks, so that the flow volume discharged from the main flow channel gradually decreases, so that part of the exhaust gas is recycled and reused through the auxiliary flow channel. The amount of exhaust gas recycled and reused is jointly controlled by the relative opening of the auxiliary flow channel and the main flow channel. The larger the opening of the auxiliary flow channel, the smaller the opening of the main flow channel, so that more exhaust gas is recycled and reused. The smaller the opening of the auxiliary flow channel, the larger the opening of the main flow channel, and the less exhaust gas is recycled and reused. The opening of the auxiliary flow channel is related to the position of the auxiliary valve plate. The position of the auxiliary valve plate can be accurately controlled and positioned by controlling the actuator, thereby accurately controlling the opening of the auxiliary flow channel.

[0020] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 This is one of the overall structural schematic diagrams of an automobile exhaust selector valve of the utility model;

[0023] Figure 2 This is one of the internal structure schematic diagrams of a Bu-type pipeline and a linkage valve core of an automobile exhaust selection valve of the utility model;

[0024] Figure 3 This is a schematic structural diagram of a fully open secondary flow channel of an automobile exhaust selector valve of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of a half-open secondary flow channel of an automobile exhaust selector valve of the utility model;

[0026] Figure 5 This is a structural schematic diagram of a fully closed secondary flow channel of an automobile exhaust selector valve of the utility model;

[0027] Figure 6 This is a schematic diagram of the overall structure of a linkage valve core of an automobile exhaust selector valve of the utility model;

[0028] Figure 7 This is the second schematic diagram of the overall structure of an automobile exhaust selector valve of the utility model;

[0029] Figure 8 This is the third schematic diagram of the overall structure of an automobile exhaust selector valve of the utility model;

[0030] Fig. 9 It is a schematic diagram of the principle of a hybrid engine of the utility model.

[0031] Among them, 1. Bu-type pipe; 11. main flow channel; 12. auxiliary flow channel; 13. give way groove; 2. linkage valve core; 21. main valve plate; 211. assembly shaft; 22. auxiliary valve plate; 3. control actuator; 31. driving mechanism; 32. connecting rod mechanism; 321. active crank; 322. connecting rod; 323. driven crank; 4. engine body; 5. exhaust pipe; 6. battery pack preheating device; 7. automobile exhaust selection valve; 8. intake pipe; 9. opening and closing valve. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below, and preferred embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0034] Embodiment 1:

[0035] See also Figure 1-Figure 8, an automobile exhaust selection valve, comprising a Bu-type pipeline 1, a linkage valve core 2 and a control actuator 3, the Bu-type pipeline 1 is provided with a main flow channel 11 and an auxiliary flow channel 12, the auxiliary flow channel 12 is arranged on the side of the main flow channel 11 and is connected to the main flow channel 11, the linkage valve core 2 is arranged on the Bu-type pipeline 1, the linkage valve core 2 is rotatably arranged in the main flow channel 11 for adjusting the connecting cross-sectional area of ​​the main flow channel 11 and the auxiliary flow channel 12, the control actuator 3 is used to drive the linkage valve core 2 to rotate and position in the main flow channel 11, the linkage valve core 2 comprises a main valve plate 21 and a secondary valve plate 22, the secondary valve plate 22 is fixedly arranged on the main valve plate 21, the main valve plate 21 is rotatably arranged in the main flow channel 11 for adjusting the opening range of the main flow channel 11, and the secondary valve plate 22 is used to move synchronously with the main valve plate 21 to synchronously adjust the opening range of the auxiliary flow channel 12 when the main valve plate 21 moves.

[0036] Specifically, the ratio of the flow cross-sectional area of ​​the main channel 11 to the flow cross-sectional area of ​​the auxiliary channel 12 is greater than 2. In the present embodiment, the main channel 11 and the auxiliary channel 12 are both cylindrical channels. Of course, in other embodiments, the cross-sectional shapes of the main channel 11 and the auxiliary channel 12 can also be square or other special-shaped cross-sections. The main valve plate 21 and the auxiliary valve plate 22 are both located in the main channel 11. The main valve plate 21 is rotatably connected to the Bu-type pipe 1 through the assembly shaft 211, and the assembly shaft 211 extends out of the Bu-type pipe 1 and is connected to the control actuator 3. The control mechanism 3 drives the main valve plate 21 to rotate around the assembly shaft 211. The main valve plate 21 can be controlled by the control mechanism 3 to be positioned at any rotation position, thereby accurately controlling the relative opening of the main channel 11 and the auxiliary channel 12. It should be noted that Figure 3 The direction indicated by the arrow in the middle is the flow direction of the exhaust gas.

[0037] It can be understood that the exhaust gas discharged by the engine enters from the main flow channel 11. When the engine is just started, the internal temperature of the engine is relatively low. When the engine temperature is low, it is easy to cause unstable starting and flameout. Secondly, when the engine temperature is low, the combustion is incomplete, resulting in fuel waste. In this case, by rotating the linkage valve core 2, the auxiliary valve plate 22 partially opens the auxiliary flow channel 12, so that the high-temperature exhaust gas enters the engine from the auxiliary flow channel 12 to preheat the engine. Secondly, the temperature of the incoming gas is increased, so that the overall heat of the engine rises rapidly, thereby making the combustion in the engine more complete; secondly, when the engine is started, the auxiliary flow channel 12 is in an open state, so that part of the discharged gas with heat is passed through the engine intake manifold and re-enters the engine cylinder for combustion. This part of the gas is a gas with heat, which can increase the temperature of the gas burning inside the engine, which is beneficial to the start of the engine. After the start-up is stable, in order to prevent excessive backflow of exhaust gas from the engine into the cylinder body, the control mechanism controls the main valve plate 21 to rotate and drive the auxiliary valve plate 22 to rotate, so that the opening of the auxiliary flow channel 12 becomes smaller, and the exhaust gas backflowing from the auxiliary flow channel 12 is reduced, thereby reducing the exhaust gas backflowing into the engine cylinder body. The opening of the auxiliary flow channel 12 can be controlled and positioned by controlling the actuator 3 to control the relative angles of the main valve plate 21 and the auxiliary valve plate 22 relative to the Bu-type pipe 1 according to actual needs, so that the backflow of exhaust gas can be flexibly adjusted, thereby controlling the amount of exhaust gas backflowing into the engine.

[0038] Preferably, the main valve disc 21 is rotatably disposed in the main flow channel 11, the rotation center axis of the main valve disc 21 is eccentrically arranged relative to the circular inlet cross section of the auxiliary flow channel 12, and the auxiliary valve disc 22 is eccentrically arranged on the outside of the main valve disc 21 through a connecting rod. When the main valve disc 21 is controlled to rotate so that the opening degree of the main flow channel 11 becomes larger or smaller, the auxiliary valve disc 22 is controlled to move at the same time, and the auxiliary valve disc 22 rotates in an arc shape relative to the rotation center of the active valve disc so that the auxiliary valve disc 22 approaches or moves away from the auxiliary flow channel 12, so that the opening degree of the auxiliary flow channel 12 becomes larger or smaller. When the auxiliary valve disc 22 completely abuts against the inner wall of the main flow channel 11, the auxiliary flow channel 12 is completely closed. The farther the auxiliary valve disc 22 is from the auxiliary flow channel 12, the greater the opening degree of the auxiliary flow channel 12, and the more gas returns to the intake manifold through the auxiliary flow channel 12. The auxiliary valve plate 22 is located on the upstream side of the main flow channel 11. When the auxiliary valve plate 22 is opened to a small degree, the surface sealed between the auxiliary valve plate 22 and the main flow channel 11 can be used as a guide surface to guide the exhaust gas in the main flow channel 11, so that the exhaust gas enters the auxiliary flow channel 12 under the guiding effect, so that the exhaust gas can easily enter the auxiliary flow channel 12. It can be understood that when the engine is started at a low temperature, it is necessary to quickly increase the temperature in the engine cylinder. By opening the auxiliary flow channel 12, part of the gas carrying heat after combustion in the cylinder can enter the engine cylinder again through the auxiliary flow channel 12, thereby achieving the purpose of increasing the temperature of the combustion gas in the cylinder.

[0039] Preferably, a clearance groove 13 is provided on the Bu-type pipeline 1. The clearance groove 13 is provided in the main flow channel 11 and is upstream of the rotation center axis of the main valve disc 21. The clearance groove 13 is provided corresponding to the auxiliary valve disc 22. When the auxiliary valve disc 22 is large, the auxiliary valve disc 22 will exceed the edge of the upstream side of the main valve disc 21. Therefore, when the auxiliary valve disc 22 rotates, the auxiliary valve disc 22 will interfere with the inner wall of the main flow channel 11. The provision of the clearance groove 13 can solve this problem well. In addition, when the auxiliary valve disc 22 is large, the contact area between the auxiliary valve disc 22 and the inner wall of the main flow channel 11 is larger, and when the auxiliary valve disc 22 seals the auxiliary flow channel 12, the seal is tighter. When the auxiliary flow channel 12 needs to be fully opened and the main flow channel 11 needs to be closed, the main valve disc 21 is rotated to be fully closed. At this time, the auxiliary valve disc 22 moves to the clearance groove 13 to prevent the auxiliary valve disc 22 from conflicting with the inner wall of the main flow channel 11 and preventing the main valve disc 21 from completely closing the main flow channel 11. It should be noted that in some cases where the auxiliary valve plate 22 is relatively small, the auxiliary valve plate 22 will not extend beyond the edge of the main valve plate 21. Therefore, when the main valve plate 21 is fully closed, the auxiliary valve plate 22 will not abut against the inner wall of the main channel 11. Therefore, in this case, there is no need to set a clearance groove 13 on the side wall of the main channel 11. During the research and development process, it was found that when the auxiliary valve plate 22 is in a state of fully closing the auxiliary channel 12, the auxiliary valve plate 22 needs to be completely located on the upstream side of the radial section of the main channel 11 passing through the assembly shaft 211. If part of the auxiliary valve plate 22 is located on the downstream side of the radial section of the main channel 11 passing through the assembly shaft 211 when the auxiliary valve plate 22 is in a state of fully closing the auxiliary channel 12, the auxiliary valve plate 22 will interfere with the side wall of the main channel 11 during its rotation, causing the auxiliary valve plate 22 to get stuck. Figure 2 As shown, when the auxiliary valve plate 22 completely closes the auxiliary flow channel 12, the auxiliary valve plate 22 is located on the side above the dotted line.

[0040] Preferably, the cross section of the main flow channel 11 is circular, the surface of the auxiliary valve disc 22 for sealing is an arc surface, and the arc surface of the auxiliary valve disc 22 for sealing is arranged away from the main valve disc 21. It can be understood that when the auxiliary valve disc 22 seals and closes the auxiliary flow channel 12, the auxiliary valve disc 22 and the main flow channel 11 can fit tightly and completely close the auxiliary flow channel 12. The main valve disc 21 is an elliptical valve disc. When the main valve disc 21 is an elliptical valve disc, the angle of rotation of the main valve disc 21 to fully open the main flow channel 11 and fully close the main flow channel 11 becomes smaller, making it faster to open and close the main flow channel 11. That is, a smaller rotation angle can control a larger opening of the main flow channel 11. Of course, the valve disc can also be a valve disc of other shapes such as a circular valve disc. The cross-sections of the main flow channel 11 and the auxiliary flow channel 12 may also be rectangular. When the cross-section of the main flow channel 11 is rectangular, the surface of the auxiliary valve plate 22 away from the main valve plate 21 for sealing is a plane, and the plane for sealing on the auxiliary valve plate 22 abuts against the inner wall of the main flow channel 11 upstream of the auxiliary flow channel 12 to seal and close the auxiliary flow channel 12. The cross-sections of the main flow channel 11 and the auxiliary flow channel 12 may also be other shapes.

[0041] Furthermore, the main valve disc 21 is rotatably arranged in the main flow channel 11 through the assembly shaft 211, one end of the assembly shaft 211 extends out of the Bu-type pipe 1, and the control actuator 3 is connected to the assembly shaft 211. The assembly shaft 211 is controlled by the control actuator 3 to rotate and position, thereby driving the main valve disc 21 to rotate and position, and then driving the auxiliary valve disc 22 to move and position. Specifically, a plug hole is provided in the radial direction on the main valve disc 21, and the assembly shaft 211 is plugged and fixed in the plug hole, and the assembly shaft 211 is a square shaft, and one end of the assembly shaft 211 away from the main valve disc 21 extends out of the Bu-type pipe 1 and is connected to the control actuator 3, and the assembly shaft 211 is rotatably connected to the Bu-type pipe 1 through a bearing. In other embodiments, the assembly shaft 211 can also be other structures that can drive the active valve disc 21 to rotate, such as the assembly shaft 211 is a regular hexagonal prism shaft.

[0042] Preferably, the control actuator 3 includes a driving mechanism 31 and a connecting rod mechanism 32, one end of the connecting rod mechanism 32 is connected to the assembly shaft 211, and the other end of the connecting rod mechanism 32 is connected to the driving mechanism 31. The driving mechanism 31 drives the connecting rod mechanism 32 to move and drive the assembly shaft 211 to rotate and position around the rotation center axis. In this embodiment, the driving mechanism 31 is a servo motor, and in other embodiments, the driving mechanism 31 can also be a mechanism or component that can provide power, such as a stepping motor, a hydraulic motor, etc.

[0043] Preferably, the connecting rod mechanism 32 includes an active crank 321, a connecting rod 322 and a driven crank 323, wherein the active crank 321 is connected to the output shaft of the driving mechanism 31, the driven crank 323 is fixedly connected to the extended end of the assembly shaft 211, one end of the connecting rod 322 is hinged to the active crank 321, and the other end of the connecting rod 322 is hinged to the driven crank 323, and the driving mechanism 31 drives the connecting rod mechanism 32 to move and drive the assembly shaft 211 to rotate and position around the rotation center axis. It can be understood that when the driving mechanism 31 drives the active crank 321 to rotate, the driven crank 323 is driven to rotate through the connecting rod, and then the main valve plate 21 and the auxiliary valve plate 22 are driven to rotate through the assembly shaft 211. Thus, the positions of the main valve plate 21 and the auxiliary valve plate 22 are controlled by the driving mechanism 31, and then the openings of the main flow channel 11 and the auxiliary flow channel 12 are controlled. In this embodiment, the driving mechanism 31 is a servo motor. In other embodiments, the driving mechanism 31 may also be a power component or structure that can provide power, such as a stepping motor or a hydraulic motor. In other embodiments, the control actuator 3 may also be a motor and a coupling. The motor output shaft is connected to the assembly shaft 211 through the coupling. The assembly shaft 211 is driven by the motor to rotate and position. The control actuator 3 may also be other components or members that can drive the assembly shaft 211 to rotate and position.

[0044] Furthermore, the connecting rod 322 is arranged in a Z shape, and the hinge points at both ends of the connecting rod are located in different horizontal planes. It can be understood that by arranging the connecting rod in a Z shape, the relative heights of the two ends of the connecting rod are changed, so as to achieve the connection when the active crank 321 and the driven crank 323 are not in the same plane. Often, the relative position of the active crank 321 may be higher or lower than the relative position of the driven crank 323. By arranging the connecting rod in a Z shape, it is convenient for the two ends of the connecting rod to be installed on the active crank 321 and the driven crank 323 respectively.

[0045] Furthermore, the control actuator 3 is positioned by bolts and detachably connected to the outer peripheral wall of the jack-shaped pipe 1 to form a whole. The control actuator 3 and the jack-shaped pipe 1 are positioned by bolts, so that the jack-shaped pipe 1 and the control actuator 3 maintain a relatively correct position, preventing the control actuator 3 from moving relative to the jack-shaped pipe 1 during operation, which causes the main valve plate 21 to change its position incorrectly, and the automobile exhaust selection valve cannot work normally. In addition, the linkage valve core 2 is made of high-temperature resistant material, because the temperature of the exhaust gas discharged from the engine is generally high, and the use of ordinary materials is prone to problems such as burning or large thermal deformation of the main valve plate 21 and the auxiliary valve plate 22, which directly leads to the main valve plate 21 and the auxiliary valve plate 22 being unable to work or shortening the service life of the main valve plate 21 and the auxiliary valve plate 22. In this embodiment, the valve plate is made of ceramic material. Ceramic material has good strength and deformation resistance at high temperature. Therefore, it is not easy to cause large thermal deformation and cause malfunction, and it is not easy to be burned. In other embodiments, the linkage valve core 2 can also be made of high-temperature resistant materials such as tungsten alloy.

[0046] The working principle of the utility model is as follows:

[0047] The exhaust gas generated by the engine enters from the main channel 11. In the initial state, the main valve plate 21 is in a fully open state and the auxiliary valve plate 22 is in a fully closed state. At this time, the main channel 11 is in a fully open state and the auxiliary channel 12 is in a fully closed state. At this time, all the exhaust gas is discharged from the main channel 11 without being recycled. When it is necessary to partially recover the exhaust gas for heating the battery pack, the auxiliary channel 12 is partially or fully opened, so that the exhaust gas flows from the auxiliary channel 12 into the battery pack preheating device 6, and the battery pack preheating device 6 is heated, thereby recycling the heat of the exhaust gas. The working process of opening the auxiliary flow channel 12 is that the driving mechanism 31 drives the active crank 321 to rotate, and drives the driven crank 323 and the main valve plate 21 connected to the driven crank 323 to rotate through the connecting rod, and the main valve plate 21 drives the auxiliary valve plate 22 to move together, thereby opening the auxiliary flow channel 12. When the distance moved by the auxiliary valve plate 22 is greater, the opening degree of the auxiliary flow channel 12 by the auxiliary valve plate 22 is greater. The position of the auxiliary valve plate 22 is controlled according to actual needs, so as to accurately control the opening degree of the auxiliary flow channel 12.

[0048] Embodiment 2:

[0049] See also Fig. 9The present application also provides a hybrid vehicle engine, including an engine body 4, an exhaust pipe 5, a battery pack preheating device 6 and the above-mentioned vehicle exhaust selection valve 7, the exhaust pipe 5 is arranged on the engine body 4, the main flow channel 11 of the vehicle exhaust selection valve 7 is connected to the exhaust pipe 5, and the battery pack preheating device 6 is connected to the auxiliary flow channel 12 of the vehicle exhaust selection valve 7, so as to input part of the gas into the battery pack preheating device 6.

[0050] It is understandable that when the car is started and operated in the cold winter, the engine and battery are both in a low temperature state. The low temperature will slow down the chemical reaction in the battery, thereby greatly reducing the battery's endurance. This situation can be well controlled by heating the battery. The exhaust gas after combustion from the engine body 4 is discharged through the exhaust pipe 5, passes through the automobile exhaust selection valve 7, passes through the main flow channel 11 of the automobile exhaust selection valve 7 and enters the auxiliary flow channel 12, and enters the battery pack preheating device 6 through the auxiliary flow channel 12. The battery is preheated by heat exchange, so that the battery temperature rises rapidly to a suitable operating temperature range. A suitable working environment is created for the battery, so that the battery's endurance can be maintained in the best state, and the problem of battery pack storage power reduction due to climate reasons is avoided. It should be noted that, for ease of understanding, the arrows in the figure point to the direction of exhaust gas flow. Most of the exhaust gas is discharged through the main channel 11 of the selection valve, and part of the exhaust gas is recycled and reused through the auxiliary channel 12. Most of the external gas enters from the intake pipe 8, and a small part of the exhaust gas passes through the auxiliary channel 12 and then passes through the opening and closing valve 9 into the intake pipe 8 for recycling.

[0051] Furthermore, it also includes an intake pipe 8 and an opening and closing valve 9. The auxiliary flow channel 12 is connected to the intake pipe 8 to input part of the gas into the intake pipe 8. The opening and closing valve 9 is arranged between the auxiliary flow channel 12 and the intake pipe 8. It can be understood that it is very difficult to start a car in the cold winter or in the extremely low temperature of the Antarctic and the Arctic. The reason is that when starting the vehicle, the temperature of the engine itself is extremely low, and the air temperature is also very low, usually reaching more than 20 degrees below zero. The engine is not easy to start. The exhaust gas burned by the engine is partially introduced into the intake pipe 8 through the auxiliary flow channel 12 and the opening and closing valve 9, so that the temperature of the gas entering the engine rises, so that the engine is easier to ignite and the combustion is more complete. When it is not necessary to introduce the engine exhaust gas into the intake pipe 8 for recycling, the opening and closing valve 9 can be closed. At this time, the exhaust gas in the auxiliary flow channel 12 is only transported to the battery pack preheating device 6 to preheat and keep the battery pack warm. When the temperature is very low, the heat in the exhaust gas is very valuable. The gas in the auxiliary flow channel 12 can also be introduced into the bottom of the oil pan of the engine by other means to heat the oil in the oil pan of the engine, thereby reducing the viscosity of the oil in the engine, so that the oil is maintained in a reasonable viscosity range during the operation of the engine, ensuring a good lubrication effect while reducing the problem of high resistance caused by excessive viscosity. It should be noted that the oil in the engine oil pan is heated by electric heating before the engine is started. After the engine is running normally, it is switched to using exhaust gas for heating. Secondly, it cannot be overheated. Overheating will cause the oil concentration to be too low, which is not conducive to lubrication. Therefore, the intake volume can be controlled by the automobile selection valve to control the heating temperature.

[0052] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automobile exhaust selector valve, characterized in that: It comprises a Bu-type pipeline (1), a linkage valve core (2) and a control actuator (3). The φ-shaped pipe (1) is provided with a main flow channel (11) and an auxiliary flow channel (12), wherein the auxiliary flow channel (12) is arranged on the side of the main flow channel (11) and is in communication with the main flow channel (11). The linkage valve core (2) is arranged on the 1-shaped pipeline (1), and the linkage valve core (2) is rotatably arranged in the main flow channel (11) for adjusting the connecting cross-sectional area between the main flow channel (11) and the auxiliary flow channel (12). The control actuator (3) is used to drive the linkage valve core (2) to rotate and position in the main flow channel (11). The linkage valve core (2) comprises a main valve plate (21) and an auxiliary valve plate (22); the auxiliary valve plate (22) is fixedly arranged on the main valve plate (21); the main valve plate (21) is rotatably arranged in the main flow channel (11) for adjusting the opening range of the main flow channel (11); the auxiliary valve plate (22) is used to move synchronously with the main valve plate (21) so as to synchronously adjust the opening range of the auxiliary flow channel (12) when the main valve plate (21) moves.

2. The automobile exhaust selector valve according to claim 1, characterized in that: The main valve plate (21) is rotatably disposed in the main flow channel (11), and the rotation center axis of the main valve plate (21) is eccentrically arranged relative to the circular inlet cross section of the auxiliary flow channel (12). The auxiliary valve plate (22) is eccentrically arranged on the outside of the main valve plate (21) via a connecting rod.

3. The automobile exhaust selector valve according to claim 1, characterized in that: The cross section of the main channel (11) is circular, and the surface of the auxiliary valve plate (22) used for sealing is an arc surface.

4. An automobile exhaust selector valve according to any one of claims 1-3, characterized in that: The main valve plate (21) is rotatably arranged in the main flow channel (11) via an assembly shaft (211), and one end of the assembly shaft (211) extends out of the outer tube (1).

5. The automobile exhaust selector valve according to claim 4, characterized in that: The control actuator (3) comprises a driving mechanism (31) and a connecting rod mechanism (32). One end of the connecting rod mechanism (32) is connected to the assembly shaft (211), and the other end of the connecting rod mechanism (32) is connected to the driving mechanism (31). The driving mechanism (31) drives the connecting rod mechanism (32) to move and drive the assembly shaft (211) to rotate around the central axis of rotation and position it.

6. The automobile exhaust selector valve according to claim 5, characterized in that: The connecting rod mechanism (32) comprises an active crank (321), a connecting rod (322) and a driven crank (323); the active crank (321) is connected to the output shaft of the driving mechanism (31); the driven crank (323) is fixedly connected to the extended end of the assembly shaft (211); one end of the connecting rod (322) is hinged to the active crank (321); and the other end of the connecting rod (322) is hinged to the driven crank (323).

7. The automobile exhaust selector valve according to claim 6, characterized in that: The connecting rod (322) is arranged in a Z shape, and the hinge points at both ends of the connecting rod are located in different horizontal planes.

8. An automobile exhaust selector valve according to any one of claims 1-3, characterized in that: The Bu-shaped pipe (1) is provided with a clearance groove (13), which is arranged in the main flow channel (11) and is located upstream of the rotation center axis of the main valve plate (21). The clearance groove (13) is arranged corresponding to the auxiliary valve plate (22).

9. A hybrid engine, characterized in that: The invention comprises an engine body (4), an exhaust pipe (5), a battery pack preheating device (6) and an automobile exhaust selection valve (7) according to any one of claims 1 to 8, wherein the exhaust pipe (5) is arranged on the engine body (4), the main flow channel (11) of the automobile exhaust selection valve (7) is connected to the exhaust pipe (5), and the battery pack preheating device (6) is connected to the auxiliary flow channel (12) of the automobile exhaust selection valve (7) so as to input part of the gas into the battery pack preheating device (6).

10. A hybrid engine according to claim 9, characterized in that: It also includes an air intake pipe (8) and an on-off valve (9); the auxiliary flow channel (12) is connected to the air intake pipe (8) so as to input part of the gas into the air intake pipe (8); and the on-off valve (9) is arranged between the auxiliary flow channel (12) and the air intake pipe (8).

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