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

Abstract

The utility model provides a two-position three-way selector valve for automobile exhaust emission 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. According to the utility model, the emission path of high-temperature waste gas can be switched, the selection valve is always closed according to the driving requirement of an automobile, and the waste gas is selectively circulated according to the system requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile exhaust emission, specifically relates to a two-position three-way selector valve for automobile exhaust emission and exhaust emission system. BACKGROUND

[0002] The performance of an automobile engine depends on the suitability of its operating temperature. Whether it is a fuel automobile or an oil-electric hybrid automobile, at the initial stage of starting, the engine is usually in a low-temperature state, which will result in low working efficiency. In order to solve this problem, the current technology generally uses high-temperature exhaust gas generated by engine combustion for circulating heating to quickly raise the engine temperature to its optimal operating interval. However, when the engine temperature reaches the optimal state, in order to avoid overheating of the engine, the high-temperature exhaust gas must be discharged into the atmosphere.

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

[0004] The utility model aims at providing a two-position three-way selector valve for automobile exhaust emission, aiming at solving the problem of switching the exhaust path of high-temperature exhaust gas of automobile engine, the specific technical scheme is as follows:

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

[0006] A three-way pipeline, which includes a main exhaust port, a secondary exhaust port and an air inlet port that are in communication with each other;

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

[0008] A secondary valve group, which includes a secondary valve plate, a first rotating shaft and a first driven rod, the secondary valve plate is sleeved on the first rotating shaft and located in the secondary exhaust port, the first end of the first driven rod is fixedly connected with the first rotating shaft, the secondary valve plate, the first rotating shaft and the first driven rod can synchronously rotate around the axis of the first rotating shaft;

[0009] An intermediate connecting rod, the first end of the intermediate connecting rod is hingedly connected with the second end of the first driven rod, and the second end of the intermediate connecting rod is hingedly connected with the second end of the second driven rod;

[0010] A power device for driving the main valve group and the secondary valve group to act synchronously.

[0011] Preferably in the above technical solution, the power device comprises a connecting rod, a rocker and a driving mechanism, the first end of the rocker is connected with the output end of the driving mechanism, the first end of the connecting rod is hingedly connected with the second end of the rocker, and the second end of the connecting rod is hingedly connected with the first end of an intermediate connecting rod and the second end of a first driven rod, or is hingedly connected with the second end of the intermediate connecting rod and the second end of a second driven rod.

[0012] Preferably in the above technical solution, the driving mechanism comprises a motor and a controller, the output end of the motor is connected with the first end of the rocker, and the controller is used for controlling the rotation of the motor.

[0013] Preferably in the above technical solution, the working state of the two-position three-way selector valve comprises: the main exhaust port is completely closed and the auxiliary exhaust port is completely opened, the main exhaust port is completely opened and the auxiliary exhaust port is completely closed, and the main exhaust port and the auxiliary exhaust port are in a state between complete opening and complete closing.

[0014] Preferably in the above technical solution, the connecting rod comprises a connecting section one and a connecting section two, the connecting section one is provided with external threads, the connecting section two is provided with internal threads, and the connecting section one and the connecting section two 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 a waist-shaped hole, the cross section of the first rotating shaft sleeved with the auxiliary valve plate section and the cross section of the second rotating shaft sleeved with the main valve plate section are both consistent with the shape of the waist-shaped hole.

[0016] Preferably in the above technical solution, the first rotating shaft and the auxiliary valve plate are in interference fit, and the second rotating shaft and the main valve plate are in interference fit.

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

[0018] An exhaust emission system comprises an engine, a three-way catalyst, a heat exchanger and the two-position three-way selector valve, high-temperature exhaust gas generated by the engine enters the gas inlet of the two-position three-way selector valve after passing through the three-way catalyst, the main exhaust port of the two-position three-way selector valve is connected with the atmosphere, and the auxiliary exhaust port of the two-position three-way selector valve is connected with the heat exchanger; the high-temperature exhaust gas exchanges heat with cooling liquid in the heat exchanger, and the heated cooling liquid is used for warming up the engine.

[0019] Preferably in the above technical solution, the heated cooling liquid is also used for heating a battery pack.

[0020] The technical scheme of the utility model has the following beneficial effects:

[0021] The utility model discloses a plurality of connecting rod mechanisms are formed by driven rod one, driven rod two, intermediate connecting rod, connecting rod and rocker, and synchronous action of main valve piece and vice valve piece is realized by motor drive control, and it has the advantages of simple structure, easy maintenance and high reliability.

[0022] The utility model discloses a connecting rod includes connecting section one and connecting section two, be equipped with outer thread on connecting section one, be equipped with inner thread on connecting section two, the nut is equipped with on the outer thread of connecting section one, the connecting section one and connecting section two are locked through the nut after screwing, under this structure, the length of connecting rod can realize the adjustment, greatly convenient assembly, and prevent the influence of the size machining error of part, through the length adjustment of connecting rod, can guarantee main valve piece and vice valve piece accurate complete closure and complete opening, prevent the situation that main valve piece and vice valve piece can not open completely or close completely because of too long connecting rod, also prevent the connecting rod and greatly pull the valve piece, cause main valve piece and vice valve piece damage.

[0023] The utility model discloses a waste gas exhaust system, when the main exhaust port and the vice exhaust port are half open, a part of high temperature waste gas can be discharged into the atmosphere through the main exhaust port, another part of high temperature waste gas warms up the coolant, and the engine is warmed up and the battery pack is heated through the heated coolant, when the main exhaust port is completely closed and the vice exhaust port is completely open, the high temperature waste gas is discharged from the vice exhaust port, the coolant is rapidly heated, the engine is rapidly warmed up, and the battery pack is rapidly heated, when the main exhaust port is completely open and the vice exhaust port is completely closed, the high temperature waste gas is rapidly discharged from the main exhaust port into the atmosphere, and the engine and the battery pack are not heated, preventing overheating. The two-position three-way selector valve can switch the exhaust path of the high temperature waste gas, and the selector valve is always closed according to the requirements of automobile driving, and the waste gas is selectively circulated according to the system requirements.

[0024] In addition to the purposes, characteristics and advantages described above, the utility model has other purposes, characteristics and advantages. The utility model will be further described below with reference to the drawings. DRAWINGS

[0025] The drawings that form a part of the present application are used to provide further understanding of the utility model, and the schematic embodiment of the utility model and its description are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0026] Figure 1 It is the structure schematic drawing of two-position three-way selector valve for automobile waste gas exhaust in embodiment 1.

[0027] Figure 2 is Figure 1 is a schematic diagram of a state in which the main exhaust port of the two-position three-way selector valve is open and the auxiliary exhaust port is closed;

[0028] Figure 3 is Figure 1 is a schematic diagram of a state in which the main exhaust port of the two-position three-way selector valve is closed and the auxiliary exhaust port is open;

[0029] Figure 4 is Figure 2 is a partial sectional view of the auxiliary exhaust port;

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

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

[0032] In order to facilitate the understanding of the present application, the present application will be described more fully below, and a preferred embodiment of the present application is given. However, the present application can be realized 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 disclosure of the present application more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0034] Example 1:

[0035] Referring to Figures 1-4 , the present embodiment provides a two-position three-way selector valve for automobile exhaust emission, comprising:

[0036] The three-way pipe 1 comprises a main exhaust port 1.1, an auxiliary exhaust port 1.2 and an inlet 1.3 which are in communication with each other;

[0037] The main valve assembly includes a main valve disc 2, a second rotating shaft 10, and a second driven rod 7. The main valve disc 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. The main valve disc 2, the second rotating shaft 10, and the second driven rod 7 can rotate synchronously about the axis of the second rotating shaft 10.

[0038] The auxiliary valve assembly includes an auxiliary valve disc 3, a rotating shaft 4, and a driven rod 5. The auxiliary valve disc 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. The auxiliary valve disc 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 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;

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

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

[0042] The first end of the intermediate connecting rod 8 and the second end of the driven rod 1 5 are hinged by a pin 1 6, and the second end of the intermediate connecting rod 8 and the second end of the driven rod 2 7 are hinged by a pin 2 9; the distance between the intermediate connecting rod 8, the driven rod 1 5, the driven rod 2 7 and the rotating shaft 1 4 and the rotating shaft 2 10 forms a parallelogram. By applying driving force to any one of the intermediate connecting rod 8, the driven rod 1 5 and the driven rod 2 7, the main valve plate 2 and the auxiliary valve plate 3 can be synchronized.

[0043] Specifically, the power device comprises a connecting rod 11, a rocker 12 and a driving mechanism 13, the first end of the rocker 12 is connected with the output end of the driving mechanism 13, the first end of the connecting rod 11 is hinged (such as through a pin shaft) with the second end of the rocker 12, and the second end of the connecting rod 11 is hinged with the first end of the intermediate connecting rod 8 and the second end of the driven rod one 5 or is hinged with the second end of the intermediate connecting rod 8 and the second end of the driven rod two 7. In the embodiment, the second end of the connecting rod 11 is hinged with the second end of the intermediate connecting rod 8 and the second end of the driven rod two 7 through a pin shaft two 9, the driving mechanism 13 drives the rocker 12 to rotate, and the driving force is transmitted to the intermediate connecting rod 8 and the driven rod two 7 through the connecting rod 11, so as to drive the main valve plate 2 and the auxiliary valve plate 3 to move synchronously.

[0044] Further, the driving mechanism 13 comprises a motor and a controller, the output end of the motor is connected with the first end of the rocker 12, so as to drive the rocker 12 to rotate, and the controller is used for controlling the rotation of the motor, and the rotation angle, forward and reverse rotation and the like of the motor can be controlled through the controller.

[0045] Preferably, the connecting rod 11 comprises a connecting section one and a connecting section two, the connecting section one is provided with external threads, the connecting section two is provided with internal threads, a nut is sleeved on the external threads of the connecting section one, and the connecting section one and the connecting section two are locked through the nut after being threadedly connected. In this structure, the length of the connecting rod 11 can be adjusted, the assembly is greatly facilitated, and the influence of the machining error of the size of the parts is prevented. By adjusting the length of the connecting rod 11, the main valve plate and the auxiliary valve plate can be accurately and completely closed and opened, the situation that the main valve plate and the auxiliary valve plate cannot be completely opened or closed due to the overlength of the connecting rod 11 is prevented, and the main valve plate and the auxiliary valve plate are prevented from being damaged due to the over-short of the connecting rod 11 and the large degree of pulling of the valve plate.

[0046] Further, the main valve plate 2 and the auxiliary valve plate 3 are both provided with a waist-shaped hole, the cross section of the shaft one 4 sleeved with the section of the auxiliary valve plate 3 and the cross section of the shaft two 10 sleeved with the section of the main valve plate 2 are consistent with the shape of the waist-shaped hole. Figure 4 The auxiliary valve plate 3 is provided with a waist-shaped hole, and the cooperation of the waist-shaped hole and the waist-shaped cross section can ensure that the valve plate rotates synchronously with the shaft. In this cooperation structure, the valve plate and the shaft do not need to be provided with a limiting structure to ensure that the valve plate and the shaft rotate synchronously. Preferably, the shaft one 4 and the auxiliary valve plate 3 and the shaft two 10 and the main valve plate 2 are in interference fit, so as to ensure the stability of the connection between the shaft and the valve plate and prevent loosening.

[0047] Preferably, when the main valve disc 2 seals the main exhaust port 1.1, the angle between the main valve disc 2 and the radial plane of the main exhaust port 1.1 is not 0; when the auxiliary valve disc 3 seals the auxiliary exhaust port 1.2, the angle between the auxiliary valve disc 3 and the radial plane of the auxiliary exhaust port 1.2 is not 0, such as Figure 4 This structural form can ensure that 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 both the main exhaust port 1.1 and the auxiliary exhaust port 1.2 are 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 in the figure shows the state where the main valve disc 2 is fully open and the auxiliary valve disc 3 is fully closed to the auxiliary exhaust port 1.2. Figure 3 The diagram shows the state where the auxiliary valve plate 3 is fully open and the main valve plate completely closes the main exhaust port 1.1. The two-position three-way selector valve in this embodiment can switch the exhaust path of the vehicle, ensuring that the selector valve is always closed according to the vehicle's driving requirements, and selectively circulates the exhaust gas according to system requirements.

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

[0051] Example 2:

[0052] See also Figure 5 This embodiment provides an exhaust emission system, including an engine, a three-way catalytic converter, a heat exchanger, and the two-position three-way selector valve of Example 1. The high-temperature exhaust gas generated by the engine passes through the three-way catalytic converter and enters the air inlet 1.3 of the two-position three-way selector valve. 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. 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 selector valve in embodiment 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 another part of the high-temperature exhaust gas can be used to warm the coolant, thereby achieving the effects of warming the engine and heating the battery pack; when the main exhaust port 1.1 is completely closed and the auxiliary exhaust port 1.2 is completely open, the high-temperature exhaust gas is discharged from the auxiliary exhaust port 1.2, thereby achieving the effects of quickly warming the engine and quickly heating the battery pack; when the main exhaust port 1.1 is completely open and the auxiliary exhaust port 1.2 is completely closed, the high-temperature exhaust gas is quickly discharged into the atmosphere through the main exhaust port 1.1, and the engine and the battery pack are not heated at this time.

[0054] The exhaust emission system in the embodiment can switch the exhaust path of the high-temperature exhaust gas through the two-position three-way selector valve in embodiment 1, and ensure that the selector valve is always closed according to the requirements of automobile driving, and selectively circulate and flow the exhaust gas according to the system requirements.

[0055] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A two-position three-way selector valve for automobile exhaust emission, characterized in that: The utility model relates to a two-position three-way selector valve, which comprises a three-way pipe (1), a main valve group, a sub valve group, an intermediate connecting rod (8) and a power device. The three-way pipe (1) comprises a main exhaust port (1.1), a sub exhaust port (1.2) and an intake port (1.3) which are connected with each other. The main valve group comprises a main valve plate (2), a second rotating shaft (10) and a second driven rod (7), the main valve plate (2) is sleeved on the second rotating shaft (10) and located in the main exhaust port (1.1), the first end of the second driven rod (7) is fixedly connected with the second rotating shaft (10), and the main valve plate (2), the second rotating shaft (10) and the second driven rod (7) can synchronously rotate around the axis of the second rotating shaft (10). The sub valve group comprises a sub valve plate (3), a first rotating shaft (4) and a first driven rod (5), the sub valve plate (3) is sleeved on the first rotating shaft (4) and located in the sub exhaust port (1.2), the first end of the first driven rod (5) is fixedly connected with the first rotating shaft (4), and the sub valve plate (3), the first rotating shaft (4) and the first driven rod (5) can synchronously rotate around the axis of the first rotating shaft (4). The first end of the intermediate connecting rod (8) is hingedly connected with the second end of the first driven rod (5), and the second end of the intermediate connecting rod (8) is hingedly connected with the second end of the second driven rod (7). The power device is used for driving the main valve group and the sub valve group to synchronously act.

2. The two-position, three-way selector valve for use in automotive exhaust emission according to claim 1, characterized by The power device comprises a connecting rod (11), a rocker (12) and a driving mechanism (13), the first end of the rocker (12) is connected with the output end of the driving mechanism (13), the first end of the connecting rod (11) is hingedly connected with the second end of the rocker (12), and the second end of the connecting rod (11) is hingedly connected with the first end of the intermediate connecting rod (8) and the second end of the first driven rod (5) or hingedly connected with the second end of the intermediate connecting rod (8) and the second end of the second driven rod (7).

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

4. The two-position, three-way selector valve for use in automotive exhaust emission according to claim 3, characterized by The working states of the two-position three-way selector valve include that the main exhaust port (1.1) is completely closed and the sub exhaust port (1.2) is completely opened, the main exhaust port (1.1) is completely opened and the sub exhaust port (1.2) is completely closed, and the main exhaust port (1.1) and the sub exhaust port (1.2) are in a state between completely opened and completely closed.

5. The two-position, three-way selector valve for use in automotive exhaust emission according to claim 2, characterized by The connecting rod (11) comprises a connecting section one and a connecting section two, the connecting section one is provided with external threads, the connecting section two is provided with internal threads, and the connecting section one and the connecting section two are locked by a nut after being threadedly connected.

6. The two-position, three-way selector valve for use in automotive exhaust emission according to claim 1, characterized by The main valve plate (2) and the sub valve plate (3) are both provided with a waist-shaped hole, the cross section of the first rotating shaft (4) sleeved on the section of the sub valve plate (3) and the cross section of the second rotating shaft (10) sleeved on the section of the main valve plate (2) are consistent with the shape of the waist-shaped hole.

7. The two-position, three-way selector valve for use in automotive exhaust emission according to claim 6, characterized by The first rotating shaft (4) and the sub valve plate (3) and the second rotating shaft (10) and the main valve plate (2) are in interference fit.

8. The two-position, three-way selector valve for use in automotive exhaust emission according to claim 1, characterized by The angle between the main valve plate (2) and the radial plane of the main exhaust port (1.1) is not 0 when the main valve plate (2) seals the main exhaust port (1.1); the angle between the auxiliary valve plate (3) and the radial plane of the auxiliary exhaust port (1.2) is not 0 when the auxiliary valve plate (3) seals the auxiliary exhaust port (1.2).

9. An exhaust emission system characterized by, The application relates to a two-position three-way selector valve, an engine, a three-way catalyst, and a heat exchanger, wherein high-temperature exhaust gas generated by the engine passes through the three-way catalyst and then enters the air inlet (1.3) of the two-position three-way selector valve, the main exhaust port (1.1) of the two-position three-way selector valve is connected with the atmosphere, and the auxiliary exhaust port (1.2) of the two-position three-way selector valve is connected with the heat exchanger; the high-temperature exhaust gas exchanges heat with cooling liquid in the heat exchanger, and the heated cooling liquid is used for warming up the engine.

10. The exhaust emission system of claim 9, wherein The heated cooling liquid is also used for heating a battery pack.

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