Multi-module lightweight integrated EGR (Exhaust Gas Recirculation) valve

Abstract

The utility model belongs to the field of automobile parts, and provides a multi-module lightweight integrated EGR valve which comprises a main valve body module, a bypass valve module and a cooler module. Wherein the main valve body module forms a waste gas output port; the bypass valve module is connected to the main valve body module and forms a waste gas input port; the cooler module is connected to the bypass valve module and comprises a cooler shell formed through injection molding and a cooler core arranged in the cooler shell, and a gas passing channel communicating with the waste gas input port and the waste gas output port is formed in the cooler core. And a cooling cavity through which cooling liquid passes is formed between the outer surface of the cooler core and the cooler shell.

Description

Technical Field

[0001] The present application belongs to the field of automobile parts, and more specifically, relates to a multi-module lightweight integrated EGR valve. Background Art

[0002] With the rapid development of the automobile industry and increasingly stringent environmental protection requirements, energy conservation and emission reduction have become an important direction for automobile technology research and development. Among them, exhaust gas recirculation (EGR) technology has received widespread attention as an effective means to effectively reduce engine emissions. However, traditional EGR valves have problems such as large size, heavy weight, and the need for a separate cooling device, which makes installation complicated. It is difficult to adapt to the development trend of lightweight and integrated modern automobiles. At the same time, it is not convenient to regulate the temperature of the recovered exhaust gas. Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a multi-module lightweight integrated EGR valve to solve the technical problems in the prior art.

[0004] To achieve the above purpose, the technical solution adopted in this application is: to provide a multi-module lightweight integrated EGR valve, including:

[0005] A main valve body module, forming an exhaust gas output port;

[0006] A bypass valve module having a bypass valve body connected to the main valve body module and forming an exhaust gas input port;

[0007] A cooler module is connected to the bypass valve body, and the cooler module includes an injection-molded cooler shell and a cooler core arranged inside the cooler shell, an air passage connecting the exhaust gas input port and the exhaust gas output port is formed inside the cooler core, and a cooling cavity for passing coolant is formed between the outer surface of the cooler core and the cooler shell.

[0008] Optionally, a coolant inlet connected to the cooling chamber is formed on the cooler housing, a flow channel connected to the coolant inlet is formed on the bypass valve body, and a coolant outlet connected to the flow channel is provided on the main valve body module.

[0009] Optionally, the cooler module further comprises a flange connected to the cooler housing, and the cooler housing is connected to the bypass valve body through the flange;

[0010] The flange is formed by the transverse extension of the end of the cooler core and is pre-arranged with an air hole for connecting with the air passage and a supercooling liquid hole for connecting with the cooling cavity.

[0011] Optionally, the air passage comprises an intake passage and an exhaust passage arranged in parallel, the intake passage is connected between the exhaust passage and the exhaust gas input port, and the exhaust passage is connected between the intake passage and the exhaust gas output port;

[0012] The bypass valve body is provided with a partition for separating the intake channel and the exhaust channel. The bypass valve module also includes a valve plate rotatably connected to the upper end of the partition via a rotating shaft and capable of being opened. The valve plate is arranged between the exhaust gas input port and the exhaust channel.

[0013] Optionally, the bypass valve module further comprises a control valve for driving the valve plate to open and a transmission plate transmission-connected to the rotating shaft;

[0014] The control valve is connected to the valve plate through the transmission plate and the rotating shaft.

[0015] Optionally, the bypass valve module further comprises a bypass valve sensor disposed on one side of the control valve and used for detecting the rotation angle of the rotating shaft;

[0016] The bypass valve sensor is communicatively connected to the control valve.

[0017] Optionally, the main valve body module further comprises a main valve driving module for controlling the opening of the exhaust gas output port;

[0018] The main valve drive module includes a motor, a gear reduction assembly, a transmission shaft, an angle plate, a main valve stem and a sealing disk which are sequentially connected in transmission;

[0019] The angle plate is provided with a cam groove for driving the main valve stem to move axially, and the sealing disk is connected to one end of the main valve stem away from the angle plate and is used to close or open the exhaust gas output port with an adjustable opening.

[0020] Optionally, the main valve driving module further comprises a Hall position sensor disposed on one side of the angle plate and used for detecting a steering angle of the angle plate;

[0021] The Hall position sensor is communicatively connected to the motor.

[0022] Optionally, the main valve driving module further includes a dust cover for protecting the angle plate.

[0023] The beneficial effect of the multi-module lightweight integrated EGR valve provided by the present application is that: compared with the prior art, in the multi-module lightweight integrated EGR valve provided by the present application, the main valve body module, the bypass valve module and the cooler module are integrated and then installed, which can significantly reduce the difficulty of installing the EGR valve. In addition, since a cooling cavity for passing coolant is formed between the cooler core and the cooler shell, the heat of the cooler core can be effectively isolated from being transferred to the cooler shell, so that the cooler shell can be set as a lighter plastic part, achieving the lightweight design effect of the EGR valve. At the same time, the ratio of the recovered high-temperature exhaust gas and the cooled exhaust gas can be conveniently controlled by adjusting the opening of the valve plate, which is convenient for adjusting the temperature of the recovered exhaust gas, which is conducive to improving the combustion efficiency of the engine, and is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 A schematic diagram of the exploded structure of a multi-module lightweight integrated EGR valve provided in an embodiment of the present application;

[0026] Figure 2 The overall structure of the multi-module lightweight integrated EGR valve provided in the embodiment of the present application is schematically shown. Figure 1 ;

[0027] Figure 3 The overall structure of the multi-module lightweight integrated EGR valve provided in the embodiment of the present application is schematically shown. Figure 2 ;

[0028] Figure 4 A schematic diagram of the top structure of a multi-module lightweight integrated EGR valve provided in an embodiment of the present application;

[0029] Figure 5 For along Figure 4 The cross-sectional structure diagram along the AA line;

[0030] Figure 6 A schematic diagram of the main structure of a multi-module lightweight integrated EGR valve provided in an embodiment of the present application;

[0031] Figure 7 For along Figure 6 The cross-sectional structure diagram of the middle BB line;

[0032] Figure 8 For along Figure 7Cross-sectional structural diagram along the CC line.

[0033] Among them, the reference numerals in the figure are: 100, main valve body module; 101, exhaust gas output port; 102, coolant outlet; 103, main valve drive module; 131, motor; 132, gear reduction assembly; 133, transmission shaft; 134, angle plate; 135, main valve stem; 136, sealing disk; 137, cam groove; 138, Hall position sensor; 139, dust cover; 200, bypass valve body; 201, exhaust gas input port; 202, flow channel; 203, control valve; 204, transmission plate; 205, bypass valve sensor; 300, cooler module; 301, cooler housing; 302, cooler core; 303, cooling chamber; 304, coolant inlet; 305, flange; 306, air hole; 307, coolant hole; 308, air intake channel; 309, exhaust channel; 310, partition; 311, shaft; 312, valve plate. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Please also read Figures 1 to 8Now, a multi-module lightweight integrated EGR valve provided in an embodiment of the present application is described. The multi-module lightweight integrated EGR valve includes a main valve body module 100, a bypass valve module and a cooler module 300. Among them:

[0039] The main valve body module 100 forms an exhaust gas output port 101, the bypass valve module has a bypass valve body 200 connected to the main valve body module 100 and forming an exhaust gas input port 201, and the cooler module 300 is connected to the bypass valve body 200. The cooler module 300 includes an injection molded cooler housing 301 and a cooler core 302 arranged inside the cooler housing 301, and an air passage connecting the exhaust gas input port 201 and the exhaust gas output port 101 is formed inside the cooler core 302, and a cooling cavity 303 for passing a coolant is formed between the outer surface of the cooler core 302 and the cooler housing 301. In this embodiment, the exhaust gas input port 201 is used to collect automobile exhaust gas and re-send it into the engine through the exhaust gas output port 101 on the main valve body module 100. In addition, the coolant can be selected as water or other cooling liquids commonly used in the art.

[0040] According to the above structure provided in the present embodiment, in a multi-module lightweight integrated EGR valve provided in the present embodiment, the difficulty of installing the EGR valve can be significantly reduced by integrating the main valve body module 100, the bypass valve module and the cooler module 300 before installation. In addition, since a cooling cavity 303 for passing coolant is formed between the cooler core 302 and the cooler housing 301, the heat of the cooler core 302 can be effectively isolated from being transferred to the cooler housing 301, so that the cooler housing 301 can be set as a lighter plastic part, achieving a lightweight design effect of the EGR valve, which is far superior to the prior art.

[0041] In another embodiment of the present application, please refer to Figures 1 to 8 A coolant inlet 304 connected to the cooling chamber 303 is formed on the cooler housing 301, a flow passage 202 connected to the coolant inlet 304 is formed on the bypass valve body 200, and a coolant outlet 102 connected to the flow passage 202 is provided on the main valve body module 100. According to the above structure provided in this embodiment, the flow passage 202 provided on the bypass valve body 200 and the coolant outlet 102 provided on the main valve body module 100 can allow the coolant to flow through the bypass valve body 200 and the main valve body module 100, respectively, which is beneficial to further cool down the multi-module lightweight integrated EGR valve provided in this embodiment, and on the other hand, the channels are provided on the bypass valve body 200 and the main valve body module 100, thereby further reducing the weight of the EGR valve itself.

[0042] In another embodiment of the present application, please refer to Figures 1 to 8The cooler module 300 further includes a flange 305 connected to the cooler housing 301. The cooler housing 301 is connected to the bypass valve body 200 through the flange 305. The flange 305 is formed by the lateral extension of the end of the cooler core 302 and is pre-set with an air hole 306 for connecting to the air passage and a supercooling liquid hole 307 for connecting to the cooling chamber 303. According to the above structure provided in this embodiment, the flange 305 connected to the cooler housing 301 is not only conducive to the quick connection of the cooler module 300 and the bypass valve body 200, but also conducive to sealing the cooling chamber 303 to prevent the cooling chamber 303 from leaking.

[0043] In another embodiment of the present application, please refer to Figures 1 to 8 The bypass passage includes an intake passage 308 and an exhaust passage 309 arranged in parallel, the intake passage 308 is connected between the exhaust passage 309 and the exhaust gas input port 201, and the exhaust passage 309 is connected between the intake passage 308 and the exhaust gas output port 101. It can be understood that the lower ends of the intake passage 308 and the exhaust passage 309 are interconnected. The bypass valve body 200 is provided with a partition 310 for separating the intake passage 308 and the exhaust passage 309. The bypass valve module also includes a valve plate 312 that is rotatably connected to the upper end of the partition 310 through a rotating shaft 311 and can be opened. The valve plate 312 is arranged between the exhaust gas input port 201 and the exhaust passage 309. According to the above structure provided in the present embodiment, the valve plate 312 provided in the present embodiment can rotate around the rotating shaft 311, so that the exhaust gas input port 201 and the output end of the exhaust channel 309 can be directly connected or closed; in this way, the valve plate 312 can be controlled to be closed or have a set opening according to the instruction of the engine ECU. When the valve plate 312 is closed, all the high-temperature exhaust gas entering from the exhaust gas input port 201 is cooled through the intake channel 308 and the exhaust channel 309 and then transferred back to the engine through the exhaust gas output port 101 with a controllable flow through the sealing disk 136; when the valve plate 312 is opened, the exhaust gas output port 101 is connected to the exhaust gas output port 101, and the exhaust gas output port 101 is connected to the exhaust gas output port 101. When the set opening is opened (the opening is monitored by the bypass valve sensor 205 to form a closed-loop control), a part of the high-temperature exhaust gas entering from the exhaust gas input port 201 is cooled via the intake channel 308 and the exhaust channel 309, and the other part directly reaches the output end of the exhaust channel 309 from the exhaust gas input port 201. The two are mixed and then returned to the engine from the exhaust gas output port 101 through the sealing disk 136 with a controllable flow rate. In this way, the ratio of the recovered high-temperature exhaust gas and the cooled exhaust gas can be conveniently controlled by adjusting the opening of the valve plate 312, which is convenient for adjusting the temperature of the recovered exhaust gas, which is beneficial to improving the combustion efficiency of the engine.

[0044] In another embodiment of the present application, please refer to Figures 1 to 8The bypass valve module further includes a control valve 203 for driving the valve plate 312 to open and a transmission plate 204 that is transmission-connected to the rotating shaft 311. The control valve 203 is transmission-connected to the valve plate 312 through the transmission plate 204 and the rotating shaft 311. According to the above structure provided in this embodiment, the control valve 203 can stably and accurately control the rotation of the rotating shaft 311 through the transmission plate 204, so that the opening control of the exhaust gas input port 201 and the exhaust channel 309 can be more accurate and reliable.

[0045] In another embodiment of the present application, please refer to Figures 1 to 8 The bypass valve module further includes a bypass valve sensor 205 disposed on one side of the control valve 203 and used to detect the rotation angle of the rotating shaft 311. The bypass valve sensor 205 is communicatively connected to the control valve 203. According to the above structure provided in this embodiment, the bypass valve sensor 205 linked to the control valve 203 can be used to accurately obtain the rotation angle of the rotating shaft 311, forming a closed-loop control, thereby further improving the degree of automation control of the control valve 203.

[0046] In another embodiment of the present application, please refer to Figures 1 to 8 The main valve body module 100 also includes a main valve driving module 103 for controlling the opening of the exhaust gas output port 101. The main valve driving module 103 includes a motor 131, a gear reduction assembly 132, a transmission shaft 133, an angle plate 134, a main valve stem 135 and a sealing disk 136 which are sequentially connected in transmission. A cam groove 137 for driving the main valve stem 135 to move axially is provided on the angle plate 134. The sealing disk 136 is connected to one end of the main valve stem 135 away from the angle plate 134 and is used to close or open the exhaust gas output port 101 with an adjustable opening. According to the above structure provided in this embodiment, when the motor 131 drives the angle plate 134 to rotate through the gear reduction assembly 132, the main valve stem 135 can be driven to move axially through the cam groove 137 provided on the angle plate 134, and the sealing disk 136 connected to the main valve stem 135 can more flexibly control the opening of the exhaust gas output port 101, which has a good use effect.

[0047] In another embodiment of the present application, please refer to Figures 1 to 8 The main valve driving module 103 further includes a Hall position sensor 138 disposed on one side of the angle plate 134 and used to detect the steering angle of the angle plate 134. The Hall position sensor 138 is communicatively connected to the motor 131. According to the above structure provided in this embodiment, the Hall position sensor 138 linked to the motor 131 can be used to accurately obtain the rotation angle of the angle plate 134, forming a closed-loop control to further improve the degree of automation control of the sealing disk 136.

[0048] In another embodiment of the present application, please refer to Figures 1 to 8 The main valve driving module 103 further includes a dust cover 139 for protecting the angle plate 134. According to the above structure provided in this embodiment, the dust cover can provide good protection for the angle plate 134, thereby facilitating the long-term stable operation of the main valve driving module 103 in this embodiment.

[0049] In another embodiment of the present application, please refer to Figures 1 to 8 The valve body of the main valve body module 100 is made of aluminum die casting. According to the above structure provided in this embodiment, the valve body made of aluminum is conducive to further reducing the weight of the main valve body module 100 and further reducing the weight of the multi-module lightweight integrated EGR valve provided in this embodiment.

[0050] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A multi-module lightweight integrated EGR valve, characterized in that: include: A main valve body module (100) forming an exhaust gas output port (101); A bypass valve module, comprising a bypass valve body (200) connected to the main valve body module (100) and forming an exhaust gas input port (201); A cooler module (300) is connected to the bypass valve body (200), the cooler module (300) comprising an injection-molded cooler housing (301) and a cooler core (302) disposed inside the cooler housing (301), an air passage connecting the exhaust gas input port (201) and the exhaust gas output port (101) being formed inside the cooler core (302), and a cooling cavity (303) for passing a coolant is formed between the outer surface of the cooler core (302) and the cooler housing (301).

2. The multi-module lightweight integrated EGR valve according to claim 1, characterized in that: A coolant inlet (304) connected to the cooling chamber (303) is formed on the cooler housing (301), a flow passage (202) connected to the coolant inlet (304) is formed on the bypass valve body (200), and a coolant outlet (102) connected to the flow passage (202) is provided on the main valve body module (100).

3. The multi-module lightweight integrated EGR valve according to claim 2, characterized in that: The cooler module (300) further comprises a flange (305) connected to the cooler housing (301), and the cooler housing (301) is connected to the bypass valve body (200) via the flange (305); The flange (305) is formed by a transverse extension of the end of the cooler core (302) and is pre-arranged with an air hole (306) for connecting to the air passage and a supercooling liquid hole (307) for connecting to the cooling cavity (303).

4. The multi-module lightweight integrated EGR valve according to claim 1, characterized in that: The air passage comprises an air intake passage (308) and an exhaust passage (309) arranged in parallel, the air intake passage (308) being connected between the exhaust passage (309) and the exhaust gas input port (201), and the exhaust passage (309) being connected between the air intake passage (308) and the exhaust gas output port (101); The bypass valve body (200) is provided with a partition (310) for separating the intake passage (308) and the exhaust passage (309), and the bypass valve module further comprises a valve plate (312) rotatably connected to the upper end of the partition (310) via a rotating shaft (311) and capable of being opened, and the valve plate (312) is arranged between the exhaust gas input port (201) and the exhaust passage (309).

5. The multi-module lightweight integrated EGR valve according to claim 4, characterized in that: The bypass valve module further comprises a control valve (203) for driving the valve plate (312) to open, and a transmission plate (204) drivingly connected to the rotating shaft (311); The control valve (203) is transmission-connected to the valve plate (312) via the transmission plate (204) and the rotating shaft (311).

6. The multi-module lightweight integrated EGR valve according to claim 5, characterized in that: The bypass valve module further comprises a bypass valve sensor (205) arranged on one side of the control valve (203) and used for detecting the rotation angle of the rotating shaft (311); The bypass valve sensor (205) is communicatively connected to the control valve (203).

7. The multi-module lightweight integrated EGR valve according to claim 1, characterized in that: The main valve body module (100) further comprises a main valve driving module (103) for controlling the opening of the exhaust gas output port (101); The main valve drive module (103) comprises a motor (131), a gear reduction assembly (132), a transmission shaft (133), an angle plate (134), a main valve stem (135), and a sealing disk (136) which are sequentially connected in transmission; The angle plate (134) is provided with a cam groove (137) for driving the main valve stem (135) to move axially, and the sealing disk (136) is connected to an end of the main valve stem (135) away from the angle plate (134) and is used to close or open the exhaust gas output port (101) with an adjustable opening.

8. The multi-module lightweight integrated EGR valve according to claim 7, characterized in that: The main valve driving module (103) further comprises a Hall position sensor (138) arranged on one side of the angle plate (134) and used for detecting a steering angle of the angle plate (134); The Hall position sensor (138) is communicatively connected to the motor (131).

9. The multi-module lightweight integrated EGR valve according to claim 7, characterized in that: The main valve driving module (103) further comprises a dust cover (139) for protecting the angle plate (134).

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