Two-position three-way selector valve for automobile exhaust emission and exhaust emission system

Abstract

The invention provides a two-position three-way selector valve for exhaust emission of an automobile and an exhaust emission system, and the two-position three-way selector valve comprises a three-way pipeline which comprises a main exhaust port, an auxiliary exhaust port and an air inlet which are communicated with one another; the main valve group comprises a main valve plate, a second rotating shaft and a second driven rod, the second rotating shaft is sleeved with the main valve plate, the main valve plate is located in the main exhaust port, and the first end of the second driven rod is fixedly connected with the second rotating shaft; the auxiliary valve set comprises an auxiliary valve plate, a first rotating shaft and a first driven rod, the first rotating shaft is sleeved with the auxiliary valve plate, the auxiliary valve plate is located in the auxiliary exhaust port, and the first end of the first driven rod is fixedly connected with the first rotating shaft; the two ends of the middle connecting rod are hinged to the second end of the first driven rod and the second end of the second driven rod respectively; the power device is used for driving the main valve set and the auxiliary valve set to act synchronously. The exhaust path of the high-temperature waste gas can be switched, it is guaranteed that the selection valve is closed all the time according to the automobile running requirement, and the waste gas is selectively circulated according to the system requirement.

Description

Technical Field

[0001] The invention relates to the technical field of automobile exhaust emission, and in particular to a two-position three-way selector valve for automobile exhaust emission and an exhaust emission system. Background Art

[0002] The performance of a car engine depends on the suitability of its operating temperature. Whether it is a fuel car or a hybrid car, the engine is usually in a low temperature state at the beginning of startup, which leads to low working efficiency. To solve this problem, current technology generally uses the high-temperature exhaust gas generated by engine combustion for circulation heating to quickly raise the engine temperature to its optimal working range. However, when the engine temperature reaches the optimal state, in order to avoid engine overheating, the high-temperature exhaust gas must be discharged into the atmosphere.

[0003] In order to effectively control the emission path of high-temperature exhaust gas, a device capable of switching the emission path is required. Therefore, the present application proposes a two-position three-way selector valve and an exhaust emission system for automobile exhaust emission, aiming to solve the problem of automobile exhaust emission path switching and ensure that the engine can operate efficiently and safely under different temperature conditions. Summary of the invention

[0004] The present invention aims to provide a two-position three-way selector valve for automobile exhaust emission, aiming to solve the problem of switching the emission path of high-temperature exhaust gas from automobile engines. The specific technical solution is as follows:

[0005] A two-position three-way selector valve for automobile exhaust emission, comprising:

[0006] A three-way pipeline includes a main exhaust port, a secondary exhaust port and an air inlet that are interconnected;

[0007] A main valve assembly, comprising a main valve plate, a second rotating shaft and a second driven rod, wherein the main valve plate is sleeved on the second rotating shaft and is located in the main exhaust port, the first end of the second driven rod is fixedly connected to the second rotating shaft, and the main valve plate, the second rotating shaft and the second driven rod can rotate synchronously around the axis of the second rotating shaft;

[0008] The auxiliary valve assembly comprises an auxiliary valve plate, a rotating shaft 1 and a driven rod 1, wherein the auxiliary valve plate is sleeved on the rotating shaft 1 and is located in the auxiliary exhaust port, the first end of the driven rod 1 is fixedly connected to the rotating shaft 1, and the auxiliary valve plate, the rotating shaft 1 and the driven rod 1 can rotate synchronously around the axis of the rotating shaft 1;

[0009] An intermediate connecting rod, wherein a first end of the intermediate connecting rod is hinged to the second end of the driven rod 1, and a second end of the intermediate connecting rod is hinged to the second end of the driven rod 2;

[0010] A power device is used to drive the main valve group and the auxiliary valve group to act synchronously.

[0011] Preferably in the above technical scheme, the power device includes a connecting rod, a rocker and a driving mechanism, the first end of the rocker is connected to the output end of the driving mechanism; the first end of the connecting rod is hinged to the second end of the rocker, and the second end of the connecting rod is hinged to the first end of the intermediate connecting rod and the second end of the driven rod one, or is hinged to the second end of the intermediate connecting rod and the second end of the driven rod two.

[0012] Preferably in the above technical solution, the driving mechanism includes a motor and a controller, the output end of the motor is connected to the first end of the rocker, and the controller is used to control the rotation of the motor.

[0013] Preferably in the above technical solution, the working states of the two-position three-way selector valve include: the main exhaust port is completely closed and the auxiliary exhaust port is completely open, the main exhaust port is completely open and the auxiliary exhaust port is completely closed, and both the main exhaust port and the auxiliary exhaust port are in a state between fully open and fully closed.

[0014] Preferably in the above technical solution, the connecting rod includes a connecting section 1 and a connecting section 2, the connecting section 1 is provided with an external thread, the connecting section 2 is provided with an internal thread, and the connecting section 1 and the connecting section 2 are threadedly connected and locked by a nut.

[0015] Preferably in the above technical solution, the main valve plate and the auxiliary valve plate are both provided with waist-shaped holes, and the cross-section of the auxiliary valve plate section of the rotating shaft set one and the cross-section of the main valve plate section of the rotating shaft set two are consistent with the shape of the waist-shaped holes.

[0016] Preferably in the above technical solution, there is interference fit between the rotating shaft 1 and the auxiliary valve plate, and between the rotating shaft 2 and the main valve plate.

[0017] Preferably in the above technical solution, when the main valve plate seals the main exhaust port, the angle between the main valve plate and the radial plane of the main exhaust port is not 0; when the auxiliary valve plate seals the auxiliary exhaust port, the angle between the auxiliary valve plate and the radial plane of the auxiliary exhaust port is not 0.

[0018] An exhaust gas emission system comprises an engine, a three-way catalytic converter, a heat exchanger and the two-position three-way selector valve. The high-temperature exhaust gas generated by the engine enters the air inlet of the two-position three-way selector valve after passing through the three-way catalytic converter. The main exhaust port of the two-position three-way selector valve is connected to the atmosphere, and the secondary exhaust port is connected to the heat exchanger. The high-temperature exhaust gas exchanges heat with coolant in the heat exchanger, and the heated coolant is used to warm up the engine.

[0019] Preferably in the above technical solution, the heated coolant is also used to heat the battery pack.

[0020] The application of the technical solution of the present invention has the following beneficial effects:

[0021] The present invention forms a multi-link mechanism through driven rod one, driven rod two, intermediate connecting rod, connecting rod and rocker, and uses motor drive to control the synchronous movement of main valve plate and auxiliary valve plate. It has the advantages of simple structure, easy maintenance and high reliability.

[0022] In the present invention, the connecting rod includes a connecting section one and a connecting section two, the connecting section one is provided with an external thread, the connecting section two is provided with an internal thread, a nut is sleeved on the external thread of the connecting section one, and the connecting section one and the connecting section two are threadedly connected and locked by the nut; under this structure, the length of the connecting rod can be adjusted, which greatly facilitates assembly and prevents the influence of part size processing errors; by adjusting the length of the connecting rod, it can ensure that the main valve plate and the auxiliary valve plate are accurately completely closed and completely opened, prevent the connecting rod from being too long, resulting in the main valve plate and the auxiliary valve plate being unable to be fully opened or completely closed, and prevent the connecting rod from being too short and pulling the valve plate significantly, causing damage to the main valve plate and the auxiliary valve plate.

[0023] The exhaust gas emission system of the present invention, when the main exhaust port and the auxiliary exhaust port are both half-open, a part of the high-temperature exhaust gas can be discharged into the atmosphere through the main exhaust port, and the other part of the high-temperature exhaust gas heats the coolant, and then the engine is warmed up and the battery pack is heated by the heated coolant; when the main exhaust port is completely closed and the auxiliary exhaust port is completely open, the high-temperature exhaust gas is all discharged from the auxiliary exhaust port, and the coolant is quickly heated to achieve the effect of quickly warming up the engine and quickly heating the battery pack; when the main exhaust port is fully opened and the auxiliary exhaust port is completely closed, the high-temperature exhaust gas is quickly discharged from the main exhaust port into the atmosphere, and the engine and the battery pack are not heated at this time to prevent overheating. The discharge path of the high-temperature exhaust gas can be switched by the two-position three-way selector valve of the present invention, ensuring that the selector valve is always closed according to the driving requirements of the vehicle, and the exhaust gas is selectively circulated according to the system requirements.

[0024] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 It is a schematic diagram of the structure of a two-position three-way selector valve for automobile exhaust emission in Example 1;

[0027] Figure 2yes Figure 1 Schematic diagram of the state where the main exhaust port of the two-position three-way selector valve is open and the auxiliary exhaust port is closed;

[0028] Figure 3 yes Figure 1 Schematic diagram of the state where the main exhaust port of the middle two-position three-way selector valve is closed and the auxiliary exhaust port is opened;

[0029] Figure 4 yes Figure 2 A partial cross-sectional view of the middle auxiliary exhaust port;

[0030] Figure 5 is a schematic diagram of the exhaust gas emission system in Example 2;

[0031] Among them, 1. three-way pipe, 1.1. main exhaust port, 1.2. auxiliary exhaust port, 1.3. air inlet, 2. main valve plate, 3. auxiliary valve plate, 4. rotating shaft one, 5. driven rod one, 6. pin shaft one, 7. driven rod two, 8. middle connecting rod, 9. pin shaft two, 10. rotating shaft two, 11. connecting rod, 12. rocker arm, 13. driving mechanism. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more fully below, and preferred embodiments of the present invention are provided. 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 in the specification of the present invention herein 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 4 This embodiment provides a two-position three-way selector valve for automobile exhaust emission, comprising:

[0036] A three-way pipeline 1, comprising a main exhaust port 1.1, a secondary exhaust port 1.2 and an air inlet 1.3 which are interconnected;

[0037] The main valve assembly comprises a main valve plate 2, a rotating shaft 10 and a driven rod 7. The main valve plate 2 is sleeved on the rotating shaft 10 and is located in the main exhaust port 1.1. The first end of the driven rod 7 is fixedly connected to the rotating shaft 10. The main valve plate 2, the rotating shaft 10 and the driven rod 7 can rotate synchronously around the axis of the rotating shaft 10.

[0038] The auxiliary valve assembly comprises an auxiliary valve plate 3, a rotating shaft 4 and a driven rod 5, wherein the auxiliary valve plate 3 is sleeved on the rotating shaft 4 and is located in the auxiliary exhaust port 1.2, and the first end of the driven rod 5 is fixedly connected to the rotating shaft 4, and the auxiliary valve plate 3, the rotating shaft 4 and the driven rod 5 can rotate synchronously around the axis of the rotating shaft 4;

[0039] An intermediate connecting rod 8, wherein a first end of the intermediate connecting rod 8 is hinged to a second end of the driven rod 1 5, and a second end of the intermediate connecting rod 8 is hinged to a second end of the driven rod 2 7;

[0040] A power device is used to drive the main valve group and the auxiliary valve group to act synchronously.

[0041] like Figure 1 As shown, after the rotating shaft 10 passes through the wall of the main exhaust port 1.1, a part of it enters the interior of the main exhaust port 1.1, and the remaining part remains outside the three-way pipe 1. The main valve plate 2 is sleeved on the section of the rotating shaft 10 located inside the main exhaust port 1.1, and the end of the rotating shaft 10 remaining outside the three-way pipe 1 is fixedly welded to the first end of the driven rod 7, so that the main valve plate 2, the rotating shaft 10 and the driven rod 7 can rotate synchronously around the axis of the rotating shaft 10; similarly, the structural setting method among the auxiliary valve plate 3, the rotating shaft 4 and the driven rod 5 is consistent with this.

[0042] The first end of the intermediate connecting rod 8 and the second end of the driven rod 5 are hinged by a pin 6, and the second end of the intermediate connecting rod 8 and the second end of the driven rod 7 are hinged by a pin 9; the distance between the intermediate connecting rod 8, the driven rod 5, the driven rod 7 and the rotating shaft 4 and the rotating shaft 2 10 forms a parallelogram, and by applying driving force to any one of the intermediate connecting rod 8, the driven rod 5 and the driven rod 7, the main valve plate 2 and the auxiliary valve plate 3 can be synchronously moved.

[0043] Specifically, the power device includes a connecting rod 11, a rocking arm 12 and a driving mechanism 13, wherein the first end of the rocking arm 12 is connected to the output end of the driving mechanism 13; the first end of the connecting rod 11 is hinged to the second end of the rocking arm 12 (such as hinged by a pin), and the second end of the connecting rod 11 is hinged to the first end of the intermediate connecting rod 8 and the second end of the driven rod 1 5, or is hinged to the second end of the intermediate connecting rod 8 and the second end of the driven rod 2 7. In this embodiment, the second end of the connecting rod 11 is hinged to the second end of the intermediate connecting rod 8 and the second end of the driven rod 2 7 through the pin 2 9, and the driving mechanism 13 drives the rocking arm 12 to rotate, and the connecting rod 11 transmits the driving force to the intermediate connecting rod 8 and the driven rod 2 7, thereby driving the main valve plate 2 and the auxiliary valve plate 3 to move synchronously.

[0044] Furthermore, the driving mechanism 13 includes a motor and a controller, the output end of the motor is connected to the first end of the rocker 12, thereby driving the rocker 12 to rotate, and the controller is used to control the rotation of the motor. The controller can control the rotation angle, forward and reverse rotation, etc. of the motor.

[0045] Preferably, the connecting rod 11 includes a connecting section 1 and a connecting section 2, the connecting section 1 is provided with an external thread, the connecting section 2 is provided with an internal thread, a nut is sleeved on the external thread of the connecting section 1, and the connecting section 1 and the connecting section 2 are threadedly connected and locked by the nut; under this structure, the length of the connecting rod 11 can be adjusted, which greatly facilitates assembly and prevents the influence of part size processing errors; by adjusting the length of the connecting rod 11, it can ensure that the main valve plate and the auxiliary valve plate are accurately completely closed and fully opened, prevent the connecting rod 11 from being too long, resulting in the main valve plate and the auxiliary valve plate being unable to be fully opened or completely closed, and also prevent the connecting rod 11 from being too short and pulling the valve plate significantly, causing damage to the main valve plate and the auxiliary valve plate.

[0046] Furthermore, the main valve plate 2 and the auxiliary valve plate 3 are both provided with waist-shaped holes, and the cross-section of the section where the rotating shaft 1 4 is sleeved with the auxiliary valve plate 3 and the cross-section of the section where the rotating shaft 2 10 is sleeved with the main valve plate 2 are consistent with the shape of the waist-shaped holes; wherein, Figure 4 The auxiliary valve disc 3 is shown as a waist-shaped hole. The waist-shaped hole and the waist-shaped hole cross section cooperate to ensure that the valve disc rotates synchronously with the shaft. Under this cooperation structure, there is no need to set a limit structure between the valve disc and the shaft to ensure that the valve disc and the shaft rotate synchronously. Preferably, the shaft 1 4 and the auxiliary valve disc 3 and the shaft 2 10 and the main valve disc 2 are interference fits to ensure the connection stability between the shaft and the valve disc and prevent looseness.

[0047] Preferably, when the main valve plate 2 seals the main exhaust port 1.1, the angle between the main valve plate 2 and the radial plane of the main exhaust port 1.1 is not 0; when the auxiliary valve plate 3 seals the auxiliary exhaust port 1.2, the angle between the auxiliary valve plate 3 and the radial plane of the auxiliary exhaust port 1.2 is not 0, such as Figure 4 In this structural form, the valve plate can effectively seal the exhaust port to prevent air leakage.

[0048] The working states of the two-position three-way selector valve include: the main exhaust port 1.1 is fully closed and the auxiliary exhaust port 1.2 is fully open, the main exhaust port 1.1 is fully open and the auxiliary exhaust port 1.2 is fully closed, and the main exhaust port 1.1 and the auxiliary exhaust port 1.2 are both half open (i.e., in a state between fully open and fully closed).

[0049] Specifically, in this embodiment, the controller controls the motor to rotate forward and reverse within a specified angle range, or controls the motor to rotate, so as to realize the reciprocating motion of the intermediate connecting rod 8, the driven rod 1 5 and the driven rod 2 7, thereby achieving the purpose of switching the working state; Figure 2 and Figure 3 As shown, Figure 2 The diagram shows a state where the main valve plate 2 is fully open and the auxiliary valve plate 3 is fully closed to the auxiliary exhaust port 1.2. Figure 3 The diagram shows a state where the auxiliary valve plate 3 is fully opened and the main valve plate is fully closed to the main exhaust port 1.1. The two-position three-way selector valve in this embodiment can switch the exhaust gas discharge path of the automobile, ensuring that the selector valve is always closed according to the driving requirements of the automobile, and selectively allows the exhaust gas to circulate according to the system requirements.

[0050] Preferably, the first end and the second end in this embodiment refer to two ends of the rod.

[0051] Embodiment 2:

[0052] See also Figure 5 This embodiment provides an exhaust gas emission system, including an engine, a three-way catalytic converter, a heat exchanger and the two-position three-way selector valve in Embodiment 1. The high-temperature exhaust gas generated by the engine enters the air inlet 1.3 of the two-position three-way selector valve after passing through the three-way catalytic converter. The main exhaust port 1.1 of the two-position three-way selector valve is connected to the atmosphere, and its secondary exhaust port 1.2 is connected to the heat exchanger; the high-temperature exhaust gas exchanges heat with the coolant in the heat exchanger, and the heated coolant is used to warm up the engine. At the same time, the heated coolant can also be used to heat the battery pack.

[0053] Through the two-position three-way selection valve in Example 1, when the main exhaust port 1.1 and the auxiliary exhaust port 1.2 are both half-open, a part of the high-temperature exhaust gas can be discharged into the atmosphere through the main exhaust port 1.1, and the other part of the high-temperature exhaust gas heats the coolant, and then the engine and the battery pack are warmed up by the heated coolant; when the main exhaust port 1.1 is completely closed and the auxiliary exhaust port 1.2 is completely opened, the high-temperature exhaust gas is all discharged from the auxiliary exhaust port 1.2, and the coolant is quickly heated, so as to achieve the effect of quickly warming up the engine and quickly heating the battery pack; when the main exhaust port 1.1 is fully opened and the auxiliary exhaust port 1.2 is completely closed, the high-temperature exhaust gas is quickly discharged into the atmosphere from the main exhaust port 1.1, and the engine and the battery pack are not heated at this time.

[0054] The exhaust gas emission system of this embodiment can switch the emission path of high-temperature exhaust gas through the two-position three-way selection valve in Example 1, ensuring that the selection valve is always closed according to the driving requirements of the vehicle, and selectively allows the exhaust gas to circulate according to system requirements.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A two-position three-way selector valve for automobile exhaust emission, characterized in that: include: A three-way pipeline (1), comprising a main exhaust port (1.1), a secondary exhaust port (1.2) and an air inlet (1.3) which are interconnected; A main valve assembly, comprising a main valve plate (2), a second rotating shaft (10) and a second driven rod (7), wherein the main valve plate (2) is sleeved on the second rotating shaft (10) and is located in the main exhaust port (1.1), the first end of the second driven rod (7) is fixedly connected to the second rotating shaft (10), and the main valve plate (2), the second rotating shaft (10) and the second driven rod (7) can rotate synchronously around the axis of the second rotating shaft (10); An auxiliary valve assembly comprises an auxiliary valve plate (3), a rotating shaft (4) and a driven rod (5), wherein the auxiliary valve plate (3) is sleeved on the rotating shaft (4) and is located in the auxiliary exhaust port (1.2), the first end of the driven rod (5) is fixedly connected to the rotating shaft (4), and the auxiliary valve plate (3), the rotating shaft (4) and the driven rod (5) can rotate synchronously around the axis of the rotating shaft (4); An intermediate connecting rod (8), wherein a first end of the intermediate connecting rod (8) is hinged to the second end of the driven rod 1 (5), and a second end of the intermediate connecting rod (8) is hinged to the second end of the driven rod 2 (7); A power device is used to drive the main valve group and the auxiliary valve group to act synchronously.

2. The two-position three-way selector valve for automobile exhaust emission according to claim 1, characterized in that: The power device comprises a connecting rod (11), a rocking arm (12) and a driving mechanism (13); the first end of the rocking arm (12) is connected to the output end of the driving mechanism (13); the first end of the connecting rod (11) is hinged to the second end of the rocking arm (12); the second end of the connecting rod (11) is hinged to the first end of the intermediate connecting rod (8) and the second end of the driven rod 1 (5), or is hinged to the second end of the intermediate connecting rod (8) and the second end of the driven rod 2 (7).

3. The two-position three-way selector valve for automobile exhaust emission according to claim 2, characterized in that: The driving mechanism (13) comprises a motor and a controller, the output end of the motor is connected to the first end of the rocker (12), and the controller is used to control the rotation of the motor.

4. The two-position three-way selector valve for automobile exhaust emission according to claim 3, characterized in that: The working states of the two-position three-way selector valve include: the main exhaust port (1.1) is completely closed and the auxiliary exhaust port (1.2) is completely open, the main exhaust port (1.1) is completely open and the auxiliary exhaust port (1.2) is completely closed, and both the main exhaust port (1.1) and the auxiliary exhaust port (1.2) are in a state between being completely open and completely closed.

5. The two-position three-way selector valve for automobile exhaust emission according to claim 2, characterized in that: The connecting rod (11) comprises a connecting section 1 and a connecting section 2, wherein the connecting section 1 is provided with an external thread, and the connecting section 2 is provided with an internal thread, and the connecting section 1 and the connecting section 2 are threadedly connected and locked by a nut.

6. The two-position three-way selector valve for automobile exhaust emission according to claim 1, characterized in that: The main valve plate (2) and the auxiliary valve plate (3) are both provided with waist-shaped holes, and the cross-section of the section of the rotating shaft (4) sleeved with the auxiliary valve plate (3) and the cross-section of the section of the rotating shaft (10) sleeved with the main valve plate (2) are both consistent with the shape of the waist-shaped holes.

7. The two-position three-way selector valve for automobile exhaust emission according to claim 6, characterized in that: The rotating shaft 1 (4) and the auxiliary valve plate (3) as well as the rotating shaft 2 (10) and the main valve plate (2) are both interference fits.

8. The two-position three-way selector valve for automobile exhaust emission according to claim 1, characterized in that: When the main valve plate (2) seals the main exhaust port (1.1), the angle between the main valve plate (2) and the radial plane of the main exhaust port (1.1) is not zero; when the auxiliary valve plate (3) seals the auxiliary exhaust port (1.2), the angle between the auxiliary valve plate (3) and the radial plane of the auxiliary exhaust port (1.2) is not zero.

9. An exhaust gas emission system, characterized in that: The invention comprises an engine, a three-way catalytic converter, a heat exchanger and a two-position three-way selector valve as claimed in any one of claims 1 to 8, wherein the high-temperature exhaust gas generated by the engine enters the air inlet (1.3) of the two-position three-way selector valve after passing through the three-way catalytic converter, the main exhaust port (1.1) of the two-position three-way selector valve is connected to the atmosphere, and the secondary exhaust port (1.2) is connected to the heat exchanger; the high-temperature exhaust gas exchanges heat with the coolant in the heat exchanger, and the heated coolant is used to warm up the engine.

10. The exhaust gas emission system according to claim 9, characterized in that: The heated coolant is also used to heat the battery pack.

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