EGR (Exhaust Gas Recirculation) module assembly integrated with intake manifold and throttle valve
By integrating the intake manifold and throttle valve into the EGR module assembly, the problems of complex assembly and low coordination accuracy in traditional EGR systems are solved, achieving efficient exhaust gas recirculation and intake volume control.
Patent Information
- Application Number
- CN202520574208.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-31
AI Technical Summary
In traditional EGR systems, the intake manifold, throttle valve, and EGR valve are independent components, resulting in complex and intertwined piping in the engine compartment, increasing assembly difficulty and the risk of air leakage, and affecting the dynamic coordination accuracy between EGR rate and intake volume.
Design an EGR module assembly integrating an intake manifold and a throttle valve. Through a one-piece molded valve body and intake manifold body, combined with a valve plate and sealing gasket directly installed in the intake pipe, and a drive mechanism driven by a servo motor, the mixing and proportional control of exhaust gas and fresh air can be realized.
It significantly reduces assembly difficulty and leakage risk, improves the dynamic coordination accuracy between exhaust gas recirculation rate and intake volume, and enhances mixing efficiency.
Smart Images
Figure CN223689832U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of internal combustion engines, and particularly relates to an EGR module assembly integrating an intake manifold and a throttle valve. BACKGROUND
[0002] Exhaust Gas Recirculation (EGR) is a technology that re-introduces part of the exhaust gas after engine combustion into the intake system to mix with fresh air and participate in combustion again. Its core function is to reduce combustion temperature and inhibit the generation of nitrogen oxides (NOx), thereby meeting increasingly stringent emission regulations. In traditional EGR systems, the intake manifold is responsible for distributing fresh air to each cylinder, the throttle valve is used to regulate the intake air volume, and the EGR valve controls the exhaust gas recirculation ratio. The three components are connected through external pipelines as independent parts, forming a multi-point layout. This split design results in complex pipeline interlacing in the engine compartment, increasing assembly difficulty and leakage risk, and affecting the dynamic coordination accuracy of EGR rate and intake air volume due to the physical distance between components and signal transmission delay. Therefore, it is necessary to solve the above technical problems. CONTENT OF THE UTILITY MODEL
[0003] The purpose of the embodiments of the present application is to provide an EGR module assembly integrating an intake manifold and a throttle valve to solve the technical problem of low EGR system regulation accuracy in the prior art.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide an EGR module assembly integrating an intake manifold and a throttle valve, comprising:
[0005] a valve body forming a first cavity and a second cavity spaced apart, and further forming a valve seat for communicating the first cavity and the second cavity, and an exhaust gas access interface communicated with the first cavity;
[0006] an intake manifold body integrally formed with the valve body and forming an intake pipe and an engine intake interface in communication with each other, and further forming an air intake interface communicated with the intake pipe, the second cavity being in communication with the intake pipe;
[0007] a throttle valve comprising a valve plate and a first drive mechanism drivingly connected to the valve plate, the valve plate being arranged in the intake pipe and being capable of being driven by the first drive mechanism to control the opening degree of the intake pipe;
[0008] a control assembly comprising a sealing gasket and a second drive mechanism drivingly connected to the sealing gasket, the sealing gasket being in abutment with the valve seat and being capable of being driven by the second drive mechanism to control the opening degree of the valve seat.
[0009] Optionally, the throttle valve comprises a first sensor connected to the valve plate and used for detecting the rotation angle of the valve plate, and the second driving mechanism comprises a servo motor drivingly connected to the sealing pad and a second sensor connected to the servo motor and used for detecting the rotation angle of the servo motor.
[0010] The first sensor is communicatively connected to the second sensor.
[0011] Optionally, the valve plate is located between the air inlet interface and a port of the second cavity for accessing the air inlet pipe.
[0012] Optionally, a mounting flange for mounting the second driving mechanism is further formed on the valve body.
[0013] A third cavity in communication with the second cavity is formed on the mounting flange, and the second driving mechanism is sealingly connected to the inner wall of the third cavity and can access the second cavity from the third cavity.
[0014] Optionally, the second driving mechanism comprises a sleeve, a push rod coaxially arranged inside the sleeve, a horizontal shaft perpendicularly connected to the push rod, and rollers coaxially and rotatably connected to both ends of the horizontal shaft, and further comprises a slot-shaped cam seat arranged in the third cavity and a slot-shaped cam formed on the slot-shaped cam seat, and the sealing pad is connected to the push rod.
[0015] A straight slot parallel to the push rod is formed on the sleeve, the horizontal shaft passes through the straight slot and makes the rollers located outside the sleeve, the rollers are adaptively connected to the slot-shaped cam, and the slot-shaped cam forms a preset shape capable of moving the rollers axially along the sleeve.
[0016] Optionally, the second driving mechanism comprises a sector gear coaxially connected to the sleeve, and further comprises a driving gear connected to the power end of the servo motor.
[0017] The driving gear and the sector gear form a gear transmission pair.
[0018] Optionally, the second driving mechanism further comprises a sealing ring coaxially connected to the push rod.
[0019] The push rod penetrates the slot-shaped cam seat and is sealingly connected to the slot-shaped cam seat through the sealing ring.
[0020] Optionally, the second driving mechanism further comprises a protective cover coaxially connected to the push rod, and the portion of the push rod between the slot-shaped cam seat and the sealing pad is located inside the protective cover.
[0021] The EGR module assembly integrated with the intake manifold and the throttle valve in the application has the beneficial effects that, compared with the prior art, in the EGR module assembly integrated with the intake manifold and the throttle valve in the application, the engine combustion exhaust gas can enter the intake pipe formed on the intake manifold body through the exhaust gas access interface, the first cavity and the second cavity formed in the valve body in sequence, fresh air can enter the intake pipe through the air intake interface formed on the intake manifold body, and then mix with the combustion exhaust gas from the second cavity in the intake pipe and enter different cylinders from the engine intake interfaces. Since the intake manifold body and the valve body are integrally formed, and since the valve plate for controlling the opening of the intake pipe is directly arranged in the intake pipe and the sealing gasket for controlling the opening of the valve seat directly abuts against the valve seat, the EGR module assembly integrated with the intake manifold and the throttle valve in the application can not only effectively reduce the assembly difficulty and the risk of air leakage, but also can obviously improve the dynamic coordination accuracy of the exhaust gas recirculation rate and the intake amount due to the significant shortening of the physical distance between the components, which is much better than the prior art. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.
[0023] Figure 1 The overall structure of the EGR module assembly integrated with the intake manifold and the throttle valve in the embodiment of the application Figure 1 ;
[0024] Figure 2 The overall structure of the EGR module assembly integrated with the intake manifold and the throttle valve in the embodiment of the application Figure 2 ;
[0025] Figure 3 The partial structure sectional view of the EGR module assembly integrated with the intake manifold and the throttle valve in the embodiment of the application
[0026] Figure 4 The partial structure view of the EGR module assembly integrated with the intake manifold and the throttle valve in the embodiment of the application
[0027] Figure 5 The partial structure of the second driving mechanism in the embodiment of the application Figure 1 ;
[0028] Figure 6 The partial structure of the second driving mechanism in the embodiment of the application Figure 2 ;
[0029] Figure 7 Figure 2 is a partial structure side view of a second driving mechanism in an embodiment of the present application;
[0030] Figure 8 Figure 3 is a sectional structure view along line A-A in Figure 2. Figure 7
[0031] Wherein, the reference signs in the figures are as follows: 100, valve body; 101, first cavity; 102, second cavity; 103, valve seat; 104, exhaust gas access interface; 105, mounting flange; 106, third cavity; 200, intake manifold body; 201, intake pipe; 202, engine intake interface; 203, air intake interface; 300, throttle valve; 301, valve plate; 302, first driving mechanism; 303, first sensor; 400, control assembly; 401, sealing gasket; 402, second driving mechanism; 421, servo motor; 422, second sensor; 423, sleeve; 424, push rod; 425, horizontal shaft; 426, roller; 427, groove-shaped cam seat; 428, groove-shaped cam; 429, straight groove; 430, sector gear; 431, driving gear; 432, sealing ring; 433, protective cover. DETAILED DESCRIPTION
[0032] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.
[0033] It should be noted that when an element is referred to as being "fixed to" or "set 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.
[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0035] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.
[0036] Please refer to Figures 1 to 8 The EGR module assembly of the integrated intake manifold and throttle valve 300 provided by the embodiment of the present application will be described. The EGR module assembly of the integrated intake manifold and throttle valve 300 includes a valve body 100, an intake manifold body 200, a throttle valve 300, and a control assembly 400. Among them:
[0037] The valve body 100 forms a spaced first cavity 101 and a second cavity 102, and also forms a valve seat 103 for communicating the first cavity 101 and the second cavity 102, and an exhaust gas access interface 104 communicated with the first cavity 101; the intake manifold body 200 is integrally formed with the valve body 100 and forms an intake pipe 201 and an engine intake interface 202 in communication with each other, and also forms an air intake interface 203 communicated with the intake pipe 201, the second cavity 102 is communicated with the intake pipe 201; the throttle valve 300 includes a valve plate 301 and a first drive mechanism 302 drivingly connected to the valve plate 301, the valve plate 301 is arranged in the intake pipe 201 and can be driven by the first drive mechanism 302 to control the opening of the intake pipe 201; the control assembly 400 includes a sealing gasket 401 and a second drive mechanism 402 drivingly connected to the sealing gasket 401, the sealing gasket 401 abuts against the valve seat 103 and can be driven by the second drive mechanism 402 to control the opening of the valve seat 103. In the embodiment, the first drive mechanism 302 and the second drive mechanism 402 can both adopt the structure of a motor or a cylinder commonly used in the art, which will not be described here.
[0038] According to the above structure provided in the embodiment, in the EGR module assembly integrated with the intake manifold and the throttle valve 300, the engine combustion exhaust gas can enter the intake pipe 201 formed on the intake manifold body through the exhaust gas access interface 104, the first cavity 101 and the second cavity 102 formed on the valve body 100 in sequence, and the fresh air can enter the intake pipe 201 through the air intake interface 203 formed on the intake manifold body 200, and then mix with the combustion exhaust gas from the second cavity 102 in the intake pipe 201 and enter different cylinders from the engine intake interfaces 202. Since the intake manifold body 200 and the valve body 100 are integrally formed, and since the valve plate 301 for controlling the opening degree of the intake pipe 201 is directly arranged in the intake pipe 201 and the sealing gasket 401 for controlling the opening degree of the valve seat 103 directly abuts against the valve seat 103, the EGR module assembly integrated with the intake manifold and the throttle valve 300 in the embodiment can not only effectively reduce the assembly difficulty and the risk of air leakage, but also can significantly improve the dynamic coordination accuracy of the exhaust gas recirculation rate and the intake amount due to the significant shortening of the physical distance between the components, which is much better than the prior art.
[0039] In another embodiment of the present application, referring to Figures 1 to 8 , the throttle valve 300 comprises a first sensor 303 connected to the valve plate 301 and used for detecting the rotation angle of the valve plate 301, and the second driving mechanism 402 comprises a servo motor 421 drivingly connected to the sealing gasket 401 and a second sensor 422 connected to the servo motor 421 and used for detecting the rotation angle of the servo motor 421; the first sensor 303 is communicatively connected to the second sensor 422. In the embodiment, the communication connection between the first sensor 303 and the second sensor 422 can be achieved by electrical connection or wireless connection commonly used in the art, which will not be described here. According to the above structure provided in the embodiment, the first driving mechanism 302 and the second driving mechanism 402 can drive the valve plate 301 and the sealing gasket 401 to act, respectively, according to the detection signals of the first sensor 303 and the second sensor 422, so that the proportion of the exhaust gas and the fresh air entering the intake pipe 201 can be more accurately controlled, thereby facilitating to further improve the coordination accuracy of the EGR module assembly integrated with the intake manifold and the throttle valve 300 in the embodiment.
[0040] In another embodiment of the present application, referring to Figures 1 to 8, the valve plate 301 is located between the air intake interface 203 and the port of the second cavity 102 for accessing the air intake pipe 201. According to the above structure provided in the embodiment, the valve plate 301 arranged between the air intake interface 203 and the port of the second cavity 102 for accessing the air intake pipe 201 can make the exhaust gas entering the air intake pipe 201 and the fresh air entering the air intake pipe 201 mix more quickly, which can effectively avoid the problem of mixing lag caused by the traditional split structure design, thereby also being beneficial to further improve the coordination accuracy of the EGR module assembly of the integrated intake manifold and throttle valve 300 in the embodiment.
[0041] In another embodiment of the application, referring to Figures 1 to 8 , the valve body 100 further forms a mounting flange 105 for mounting the second driving mechanism 402; the mounting flange 105 forms a third cavity 106 communicated with the second cavity 102, and the second driving mechanism 402 is sealingly connected to the inner wall of the third cavity 106 and can enter the second cavity 102 from the third cavity 106. According to the above structure provided in the embodiment, the mounting flange 105 and the third cavity 106 formed on the valve body 100 not only can be used for conveniently mounting the second driving mechanism 402 of the driving sealing gasket 401, but also can form a good seal between the second driving mechanism 402 and the valve body 100, which is beneficial to further improve the coordination accuracy of the EGR module assembly of the integrated intake manifold and throttle valve 300 in the embodiment.
[0042] In another embodiment of the application, referring to Figures 1 to 8 , the second driving mechanism 402 includes a sleeve 423, a push rod 424 coaxially arranged inside the sleeve 423, a cross shaft 425 perpendicularly connected to the push rod 424, and a roller 426 coaxially and rotatably connected to both ends of the cross shaft 425, further includes a slot-shaped cam seat 427 arranged in the third cavity 106 and a slot-shaped cam 428 formed on the slot-shaped cam seat 427, and the sealing gasket 401 is connected to the push rod 424; the sleeve 423 forms a straight slot 429 parallel to the push rod 424, the cross shaft 425 passes through the straight slot 429 and makes the roller 426 located outside the sleeve 423, the roller 426 is adaptively connected to the slot-shaped cam 428, and the slot-shaped cam 428 forms a preset shape capable of moving the roller 426 axially along the sleeve 423.
[0043] According to the above structure provided in this embodiment, when the sleeve 423 rotates around its central axis, the horizontal shaft 425 passing through the straight slot 429 on the sleeve 423 can rotate around the central axis of the sleeve 423, so that the roller 426 connected with the horizontal shaft 425 can rotate along with the horizontal shaft 425. Since the roller 426 is connected with the groove cam 428 on the groove cam seat 427, and the groove cam 428 is shaped to enable the roller 426 to move axially along the sleeve 423, the groove cam 428 can move the horizontal shaft 425 axially along the sleeve 423 by providing a guide for the roller 426, so that the push rod 424 connected with the horizontal shaft 425 and coaxially arranged with the sleeve 423 can move axially along the sleeve 423, thereby enabling the sealing gasket 401 connected with the push rod 424 to stably approach or move away from the valve seat 103. Thus, the second driving mechanism 402 in this application can stably drive the sealing gasket 401 to move by rotating the sleeve 423, which is conducive to further improving the coordination accuracy of the EGR module assembly integrated into the intake manifold and throttle valve 300 in this embodiment.
[0044] In another embodiment of the application, please refer to Figures 1 to 8 , the second driving mechanism 402 includes a sector gear 430 coaxially connected to the sleeve 423, and a driving gear 431 connected to the power end of the servo motor 421; the driving gear 431 and the sector gear 430 form a gear transmission pair. According to the above structure provided in this embodiment, the driving gear 431 connected to the power end of the servo motor 421 can stably drive the sleeve 423 to rotate by forming a gear pair with the sector gear 430 coaxially connected to the sleeve 423, which is conducive to further improving the coordination accuracy of the EGR module assembly integrated into the intake manifold and throttle valve 300 in this embodiment.
[0045] In another embodiment of the application, please refer to Figures 1 to 8 , the second driving mechanism 402 further includes a sealing ring 432 coaxially connected to the push rod 424; the push rod 424 penetrates the groove cam seat 427 and is sealingly connected with the groove cam seat 427 through the sealing ring 432. According to the above structure provided in this embodiment, the sealing ring 432 coaxially sleeved on the push rod 424 can significantly improve the sealing performance of the third cavity 106, which is conducive to further improving the coordination accuracy of the EGR module assembly integrated into the intake manifold and throttle valve 300 in this embodiment.
[0046] In another embodiment of the application, please refer to Figures 1 to 8The second driving mechanism 402 further comprises a protective cover 433 coaxially connected to the push rod 424, and the portion of the push rod 424 between the groove-shaped cam seat 427 and the sealing gasket 401 is located inside the protective cover 433. According to the above structure provided in the embodiment, the protective cover 433 connected to the push rod 424 can effectively prevent impurities in the exhaust gas from entering the gap between the push rod 424 and the groove-shaped cam seat 427, which can effectively improve the sealing performance of the third cavity 106, thereby facilitating further improvement of the coordination accuracy of the EGR module assembly integrated into the intake manifold and the throttle valve 300 in the embodiment.
[0047] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An integrated intake manifold, throttle valve, EGR module assembly, characterized in that, The EGR module assembly comprises: a valve body (100) forming a first cavity (101) and a second cavity (102) in separation, a valve seat (103) for connecting the first cavity (101) and the second cavity (102), and a waste gas access interface (104) connected to the first cavity (101); an intake manifold body (200) integrally formed with the valve body (100) and forming an intake pipe (201) and an engine intake interface (202) in communication, and an air intake interface (203) connected to the intake pipe (201), the second cavity (102) being in communication with the intake pipe (201); a throttle valve (300) comprising a valve plate (301) and a first driving mechanism (302) connected to the valve plate (301), the valve plate (301) being arranged in the intake pipe (201) and being driven by the first driving mechanism (302) to control the opening of the intake pipe (201); a control assembly (400) comprising a sealing pad (401) and a second driving mechanism (402) connected to the sealing pad (401), the sealing pad (401) being in abutment with the valve seat (103) and being driven by the second driving mechanism (402) to control the opening of the valve seat (103).
2. The EGR module assembly of claim 1, wherein: the throttle valve (300) comprises a first sensor (303) connected to the valve plate (301) and used for detecting the rotation angle of the valve plate (301), and the second driving mechanism (402) comprises a servo motor (421) connected to the sealing pad (401) and a second sensor (422) connected to the servo motor (421) and used for detecting the rotation angle of the servo motor (421); the first sensor (303) is communicatively connected to the second sensor (422).
3. The EGR module assembly of claim 1 or 2, wherein: the valve plate (301) is located between the air intake interface (203) and the port of the second cavity (102) for accessing the intake pipe (201).
4. The EGR module assembly of claim 2, wherein: the valve body (100) further forms a mounting flange (105) for mounting the second driving mechanism (402); the mounting flange (105) forms a third cavity (106) connected to the second cavity (102), and the second driving mechanism (402) is sealingly connected to the inner wall of the third cavity (106) and can enter the second cavity (102) from the third cavity (106).
5. The EGR module assembly of claim 4, wherein: The second driving mechanism (402) comprises a sleeve (423), a push rod (424) coaxially arranged inside the sleeve (423), a horizontal shaft (425) vertically connected to the push rod (424), and rollers (426) coaxially and rotatably connected to both ends of the horizontal shaft (425), further comprises a slot-shaped cam seat (427) arranged in the third cavity (106) and a slot-shaped cam (428) formed on the slot-shaped cam seat (427), and the sealing gasket (401) is connected to the push rod (424); A straight slot (429) parallel to the push rod (424) is formed on the sleeve (423), the horizontal shaft (425) passes through the straight slot (429) and makes the rollers (426) located outside the sleeve (423), the rollers (426) are adaptively connected to the slot-shaped cam (428), and the slot-shaped cam (428) has a preset shape enabling the rollers (426) to move axially along the sleeve (423).
6. The EGR module assembly integrated with an intake manifold and a throttle valve according to claim 5, characterized in that: The second driving mechanism (402) comprises a sector gear (430) coaxially connected to the sleeve (423), and further comprises a driving gear (431) connected to a power end of the servo motor (421). The driving gear (431) and the sector gear (430) form a gear transmission pair.
7. The EGR module assembly integrated with an intake manifold and a throttle valve according to claim 5, characterized in that: The second driving mechanism (402) further comprises a sealing ring (432) coaxially connected to the push rod (424). The push rod (424) penetrates the slot-shaped cam seat (427) and is sealingly connected to the slot-shaped cam seat (427) through the sealing ring (432).
8. The EGR module assembly integrated with an intake manifold and a throttle valve according to claim 7, characterized in that: The second driving mechanism (402) further comprises a protective cover (433) coaxially connected to the push rod (424), and a portion of the push rod (424) between the slot-shaped cam seat (427) and the sealing gasket (401) is located inside the protective cover (433).