CN108979906B - EGR valve and engine - Google Patents
EGR valve and engine Download PDFInfo
- Publication number
- CN108979906B CN108979906B CN201810879406.XA CN201810879406A CN108979906B CN 108979906 B CN108979906 B CN 108979906B CN 201810879406 A CN201810879406 A CN 201810879406A CN 108979906 B CN108979906 B CN 108979906B
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- cap
- valve
- push rod
- air inlet
- egr valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/68—Closing members; Valve seats; Flow passages
Abstract
The invention discloses an EGR valve and an engine, and relates to the technical field of engines. The EGR valve comprises a valve body, wherein an air inlet channel and an exhaust channel which are communicated with each other are formed in the valve body, a push rod is arranged at one end of the valve body, a valve cap is arranged in the exhaust channel, one end of the push rod penetrates through the air inlet channel and is fixedly connected with the valve cap, and the push rod can drive the valve cap to seal the joint of the air inlet channel and the exhaust channel; a first accommodating groove is formed in the air inlet channel, a balance cap is arranged in the first accommodating groove and fixedly connected to the push rod, and the circumferential side wall of the balance cap is attached to the groove wall of the first accommodating groove and can slide along the groove wall of the first accommodating groove; the pressure generated by the exhaust gas in the intake passage acting on the valve cap is equal in magnitude and opposite in direction to the pressure generated by the exhaust gas acting on the balance cap. An engine is also disclosed. This EGR valve and engine, the reliability is high, prevents that the valve cap from opening passively, and the resistance of admitting air is low, and the air intake is efficient, and EGR valve control accuracy is high.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an EGR valve and an engine.
Background
Exhaust Gas Recirculation (EGR) is a method for introducing a part of exhaust gas into sucked fresh air (or mixture) during the working process of an engine, returning the part of the exhaust gas into a cylinder for recirculation and combustion participation, reducing the temperature of a combustion chamber, improving the working efficiency of the engine, improving the combustion environment, reducing the load of the engine and reducing NOxThe discharge of the compound, the reduction of the detonation and the prolonging of the service life of each part. EGR valves are valves mounted on engines for burning the engineThe exhaust gas discharged by combustion is guided to products which participate in combustion in the air inlet manifold, when the engine runs under load, the EGR valve is opened, so that a small amount of waste enters the air inlet manifold and enters a combustion chamber together with combustible mixed gas; at idle, the EGR valve is closed.
In the prior art, a schematic structural diagram of an EGR valve in a closed state is shown in fig. 1, the EGR valve mainly includes a valve body 1', an end cover 2', a valve cap 3', a shaft sleeve 4', a push rod 5' and a power source 6', and the valve body 1' forms an intake passage 7' and an exhaust passage 8 '. The power source 6 'drives the push rod 5' to act, so that the separation and the attachment of the valve cap 3 'and the end cover 2' are controlled, and the communication and the closing of the air inlet channel 7 'and the exhaust channel 8' are correspondingly realized. A schematic of one operating condition when the EGR valve is in an open state is shown in fig. 2, the valve cap 3' and the end cover 2' are separated, the flow direction of exhaust gas is shown by the arrow in fig. 2, the valve cap 3' is opened in the direction opposite to the flow direction of exhaust gas, and exhaust gas flows in from the intake passage 7' and is discharged from the exhaust passage 8 '. The main technical problems in the prior art include:
(1) the push rod 5' can open the valve cap 3' only by overcoming the pressure of the air pressure of the waste gas acting on the valve cap 3', the waste gas collides with the valve cap 3' at a certain speed while opening, the direction of the air flow is changed at the opening of the valve cap 3', the energy loss of the waste gas at the position is large, the air inlet efficiency is low, and the EGR rate is difficult to improve;
(2) the EGR valve needs to be closed when the engine is in certain conditions, such as idle, low speed, low load, cold running, or full speed, full load conditions. At this time, if the exhaust pressure of the exhaust gas is greater than the intake pressure and the pulling force of the power source 6 'to the push rod 5', the valve cap 3 'is passively opened, the opening direction of the valve cap 3' is the same as the exhaust gas flowing direction at this time, the structural schematic diagram of the EGR valve in the passive open state is shown in fig. 3, and as shown by the arrow direction in fig. 3, the exhaust gas flows into the exhaust passage 8 'and is discharged from the intake passage 7'. At the moment, the opening degree of the valve cap 3' and the exhaust gas recirculation working condition are both in an uncontrollable condition, so that the performance of the engine is deteriorated; the push rod moves downwards passively, and the driving force is transmitted to the power source 6', so that the power source rotor is damaged.
Disclosure of Invention
In order to solve the problems, the invention provides the EGR valve and the engine, which have high reliability, low air inlet resistance, high air inlet efficiency and high control precision of opening and closing of the EGR valve, and can prevent the valve cap from being opened passively.
The invention adopts the following technical scheme:
the utility model provides a EGR valve, includes the valve body, forms the intake passage and the exhaust passage of intercommunication each other in the valve body, and the push rod setting still includes in the one end of valve body:
the valve cap is arranged in the exhaust channel, one end of the push rod penetrates through the air inlet channel and is fixedly connected with the valve cap, and the push rod can drive the valve cap to seal or communicate the connection part of the air inlet channel and the exhaust channel;
the balance cap is arranged in the first accommodating groove and fixedly connected to the push rod, and the circumferential side wall of the balance cap is attached to the groove wall of the first accommodating groove and can slide along the groove wall of the first accommodating groove;
the pressure generated by the exhaust gas in the intake passage acting on the valve cap is equal in magnitude and opposite in direction to the pressure generated by the exhaust gas acting on the balance cap.
As a preferred scheme of the invention, the valve cap and the balance cap are integrally formed into the cap body component through the connecting sleeve, and the push rod penetrates through the cap body component and is fixedly connected with the cap body component.
As a preferred scheme of the invention, an end cover is arranged at the joint of the air inlet channel and the exhaust channel, the end cover is fixedly connected with the valve body, and the valve cap can be abutted against the end cover to realize the sealing of the air inlet channel and the exhaust channel.
In a preferred embodiment of the present invention, the end cap has a circular ring structure, the diameter of the inner annular surface of the end cap is smaller than the outer diameter of the valve cap, and the valve cap can abut against the inner annular surface of the end cap from the exhaust passage side, so that the valve cap seals the intake passage and the exhaust passage.
As a preferable scheme of the present invention, a second receiving groove is further disposed at a bottom of the first receiving groove, a shaft sleeve is disposed in the second receiving groove, and the push rod is inserted into the shaft sleeve.
As a preferable scheme of the invention, the outer peripheral surface of the balance cap is provided with an installation groove, a sealing ring is embedded in the installation groove, and the sealing ring can be attached to the first accommodating groove.
As a preferred scheme of the invention, the valve cap comprises a connecting part and a bending part, the bending part is arranged on the periphery of the connecting part and forms an included angle with the connecting part, the connecting part is connected with the connecting sleeve, and the bending part can be abutted against the inner annular surface of the end cover.
In a preferred embodiment of the invention, the valve cap is moved away from the end cap in the same direction as the flow of the exhaust gas.
As a preferable scheme of the invention, the air inlet channel is arranged on the side surface of the valve body, the air outlet channel is arranged on the bottom surface of the valve body, and the air inlet channel is communicated with the air outlet channel at a right angle.
An engine adopts above-mentioned EGR valve.
The invention has the beneficial effects that:
(1) according to the EGR valve provided by the invention, through the arrangement of the valve cap and the balance cap, the pressure generated by the waste gas in the air inlet channel acting on the valve cap is equal to the pressure generated by the pressure acting on the balance cap in opposite directions, so that the acting force of the valve cap and the balance cap on the push rod can be counteracted no matter how large the pressure of the waste gas in the air inlet channel is, the opening action of the valve cap is only driven by a power source, the arrangement can prevent the valve cap from being passively opened, the air inlet resistance is low, and the control precision of opening and closing of the EGR valve is high.
(2) The engine provided by the invention has the advantages of high reliability and high air intake efficiency by adopting the EGR valve.
Drawings
FIG. 1 is a schematic diagram of a prior art EGR valve in a closed state;
FIG. 2 is a schematic illustration of a prior art EGR valve in an open state for one operating condition;
FIG. 3 is a schematic diagram of a prior art EGR valve in a passively open state;
FIG. 4 is a schematic structural view of an EGR valve provided by the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a schematic structural diagram of a cap assembly in an EGR valve provided by the present invention.
In the figure:
1. a valve body; 2. an end cap;
3. a valve cap; 31. a connecting portion; 32. a bending section;
4. a shaft sleeve; 5, pushing a rod; 6. a power source; 7. an air intake passage;
8. an exhaust passage; 81. a first accommodating groove; 82. a second accommodating groove;
9. a balance cap; 91. a seal ring; 10. connecting sleeves; 11. a cap assembly;
1', a valve body; 2', an end cover; 3', a valve cap; 4', a shaft sleeve; a 5' push rod; 6', a power source; 7', an air inlet channel; 8', an exhaust passage.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 4 is a schematic structural diagram of an EGR valve provided by the present invention, as can be seen from fig. 4, the EGR valve mainly comprises a valve body 1, a push rod 5, a valve cap 3 and a balance cap 9, wherein an intake passage 7 and an exhaust passage 8 which are communicated with each other are formed in the valve body 1, the intake passage 7 is used for introducing exhaust gas discharged by engine combustion into the EGR valve, the exhaust passage 8 is communicated with an intake manifold of the engine, and the exhaust gas in the EGR valve is guided to the intake manifold to participate in the combustion. Specifically, the state shown in fig. 4 is a state in which the EGR valve is closed, the valve cap 3 is disposed in the exhaust passage 8 for opening or closing the EGR valve, the other end of the push rod 5 is fixedly connected to the valve cap 3 through the intake passage 7, and the push rod 5 can drive the valve cap 3 to seal the connection between the intake passage 7 and the exhaust passage 8. The air inlet channel 7 is formed in the first accommodating groove 81, the balance cap 9 is arranged in the first accommodating groove 81, the balance cap 9 is fixedly connected to the push rod 5, and the circumferential side wall of the balance cap 9 is attached to the groove wall of the first accommodating groove 81 and can slide along the groove wall of the first accommodating groove 81. When the EGR valve needs to be opened, the pressure generated by the exhaust gas in the intake passage 7 acting on the valve cap 3 and the pressure generated by the exhaust gas in the intake passage 7 acting on the balance cap 9 are equal in magnitude and opposite in direction, and therefore the pressures generated by the pressure of the exhaust gas in the intake passage 7 acting on the valve cap 3 and the balance cap 9 cancel each other out. Therefore, no matter how large the pressure of the exhaust gas in the intake passage 7 is, the action of the valve cap 3 is always realized by the action of the push rod 5, so that the control precision of opening and closing of the EGR valve is high, the intake resistance is low, and the intake efficiency is high; meanwhile, when the engine is under specific working conditions such as idling, low-speed and low-load, cold-state operation or full-speed and full-load working conditions, the exhaust gas in the exhaust passage 8 only can compress the valve cap 3 at the joint of the air inlet passage 7 and the exhaust passage 8, and can not reversely enter the air inlet passage 7, so that the problem that the opening degree and the exhaust gas of the valve cap are uncontrollable under the circulating working condition in the prior art is solved, the power source rotor cannot be damaged, and the valve cap 3 can be prevented from being opened passively.
Further, the other end of the push rod 5 is connected with a power source 6, the power source 6 is arranged at one end of the valve body 1, namely the power source 6 drives the push rod 5 to move, and the push rod 5 further drives the valve cap 3 and the balance cap 9 to move. The power source 6 is preferably a motor, so that the control precision is higher.
Further, the main purpose of providing the balance cap 9 is to achieve that the pressure generated by the exhaust gas in the intake passage 7 acting on the valve cap 3 and the pressure generated by the exhaust gas acting on the balance cap 9 are equal in magnitude and opposite in direction, and mainly from two aspects: on the first hand, a first accommodating groove 81 is formed in the air inlet channel 7, a balance cap 9 is arranged in the first accommodating groove 81, and the balance cap 9 is fixedly connected to the push rod 5, namely the balance cap 9 is fixedly connected with the push rod 5; in the second aspect, the valve cap 3 is disposed in the exhaust passage 8, and the other end of the push rod 5 is fixedly connected to the valve cap 3 through the intake passage 7. When exhaust gas enters the air inlet channel 7, certain pressure can be generated when the exhaust gas acts on the surface of the balance cap 9, certain pressure can be generated when the exhaust gas acts on the surface of the valve cap 3, and the two pressures are simultaneously transmitted to the push rod 5; when these two pressure values are equal, the two pressures transmitted to the push rod 5 can be cancelled out. Physically, F is the magnitude of the pressure experienced by a surface, P is the value of the gas pressure acting on the surface, and a is the area of the surface acted on by the gas pressure, i.e., the magnitude of the pressure experienced by a surface is equal to the value of the gas pressure acting on the surface multiplied by the area of the surface. It is expected that, in order to achieve the pressure of the exhaust gas acting on the surface of the valve cap 3 and the pressure of the exhaust gas acting on the surface of the balance cap 9 to be equal and opposite in direction, it is only necessary to set the surface areas of the valve cap 3 and the balance cap 9 which are in contact with the gas pressure to be equal, which is easy to achieve. This arrangement allows the push rod 5 to be free from the pressure generated by the action of the exhaust gas, so that the force driving the valve cap 3 is achieved only by the power source 6 controlling the push rod 5. Correspondingly, as shown in fig. 2, which is a structural diagram of the EGR valve opening in the prior art, in fig. 2, the power source 6' is required to control the push rod 5' to move downward, and the downward force of the power source 6' to control the push rod 5' needs to be greater than the pressure applied to the valve cap 3' by the intake passage 7', so as to open the valve cap 3 '. Therefore, the control precision of opening and closing the middle EGR valve is high, the air intake resistance is low, and the air intake efficiency is high.
Preferably, as shown in fig. 4, the intake passage 7 is provided on the side surface of the valve body 1, the exhaust passage 8 is provided on the bottom surface of the valve body 1, and the intake passage 7 and the exhaust passage 8 preferably communicate at right angles. The first accommodation groove 81 in fig. 4 is provided in the intake passage 7 at a position away from the exhaust passage 8 in the vertical direction. The state shown in fig. 4 is a state in which the EGR valve is closed, but it is foreseeable that when the valve cap 3 is opened downward, i.e., the EGR valve is opened, exhaust gas enters from the side surface of the valve body 1 and is discharged from the bottom surface of the valve body 1, i.e., the direction of movement of the valve cap 3 away from the end cover 2 (opening direction) is the same as the direction of flow of the exhaust gas. In the prior art, as shown in fig. 3, when the engine is in a specific operating condition such as idle speed, low speed and low load, cold running or full speed and full load, the EGR valve needs to be in a closed state, i.e. the valve cap 3' needs to be closed, and the pressure of the exhaust gas in the exhaust passage 8' is high, the exhaust gas in the exhaust passage 8' in turn acts on the surface of the valve cap 3', so that the valve cap 3' moves downwards. When the force generated by the waste gas in the exhaust passage 8 'acting on the surface of the valve cap 3' is larger than the force generated by the power source 6 'controlling the push rod 5' to lift the valve cap 3 'upwards, the valve cap 3' cannot be closed, and the waste gas is in an uncontrollable condition under the circulating working condition; even the valve cap 3' continues to move downward, resulting in damage to the power source rotor. In the present invention, however, as shown in fig. 4, the valve cap 3 can abut only at the junction of the intake passage 7 and the exhaust passage 8 regardless of the pressure of the exhaust gas in the exhaust passage 8. Therefore, the technical scheme of the invention solves the problem that the opening degree of the valve cap and the waste gas are uncontrollable under the circulating working condition in the prior art, does not cause the damage of a power source rotor, and can prevent the valve cap 3 from being passively opened.
Further, because the other end of the push rod 5 is to pass through the air inlet channel 7 and the exhaust channel 8 to be fixedly connected with the valve cap 3, in order to prevent the gas from entering the power source 6 along the gap between the push rod 5 and the valve body 1 to damage the power source 6, fig. 5 is a partial enlarged view of a position a in fig. 4, as shown in fig. 5, an installation groove is formed in the outer peripheral surface of the balance cap 9, a sealing ring 91 is embedded in the installation groove, the sealing ring 91 can be attached to the first accommodating groove 81, and when the balance cap 9 slides along the groove wall of the first accommodating groove 81, the sealing ring 91 can ensure that the balance cap 9 and the first accommodating groove 81 are sealed. Further, in order to enable the push rod 5 to be driven more smoothly, a second receiving groove 82 is further provided at the bottom of the first receiving groove 81, as shown in fig. 5, a shaft sleeve 4 is provided in the second receiving groove 82, and the push rod 5 is inserted into the shaft sleeve 4.
Further, in order to realize the fixed connection between the valve cap 3 and the push rod 5 and between the balance cap 9 and the push rod 5, the strength and the stress rationality of the whole structure are improved, and the connecting sleeve 10 is further arranged. Fig. 6 is a schematic structural diagram of the cap assembly in the EGR valve provided by the present invention, and as can be seen from fig. 6, the valve cap 3 and the balance cap 9 are integrally formed by a connecting sleeve 10 to form the cap assembly 11, the cross section of the cap assembly 11 is i-shaped, and the push rod 5 is inserted into the cap assembly 11 and is fixedly connected with the cap assembly 11. The integrally formed cap body assembly 11 is better in structural strength and more convenient to assemble and disassemble. That is, the valve cap 3 and the balance cap 9 may be formed into a split structure and respectively fixedly connected to the push rod 5, or may be formed into an integrated structure to form the cap assembly 11, and the cap assembly 11 is fixedly connected to the push rod 5.
Further, in order to achieve better sealing of the connection between the intake passage 7 and the exhaust passage 8 by the valve cap 3, an end cover 2 is provided. In fig. 4, an end cover 2 is arranged at the joint of an intake passage 7 and an exhaust passage 8, the end cover 2 is of a circular ring structure, and the diameter of the inner ring surface of the end cover 2 is smaller than the outer diameter of the valve cap 3, so that the valve cap 3 can abut against the inner ring surface of the end cover 2 from the exhaust passage 8 side, and the intake passage 7 and the exhaust passage 8 are sealed by the valve cap 3. Further, as shown in fig. 6, the valve cap 3 includes a connecting portion 31 and a bent portion 32, the bent portion 32 is disposed at the outer periphery of the connecting portion 31 and is disposed at an angle to the connecting portion 31, and the connecting portion 31 is connected to the connecting sleeve 10. When the valve cap 3 acts, the bending part 32 with the included angle has an inclined surface which can be abutted against the inner annular surface of the end cover 2, so that better sealing is realized.
The invention also discloses an engine, and the reliability and the air intake efficiency of the engine are high by adopting the EGR valve.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. An EGR valve comprising: valve body (1), form air inlet channel (7) and exhaust passage (8) of intercommunication each other in valve body (1), push rod (5) set up the one end at valve body (1), its characterized in that still includes:
the valve cap (3) is arranged in an exhaust channel (8), one end of the push rod (5) penetrates through the air inlet channel (7) to be fixedly connected with the valve cap (3), and the push rod (5) can drive the valve cap (3) to seal the connection part of the air inlet channel (7) and the exhaust channel (8);
the balance cap (9), a first accommodating groove (81) is formed in the air inlet channel (7), the balance cap (9) is arranged in the first accommodating groove (81), the balance cap (9) is fixedly connected to the push rod (5), and the circumferential side wall of the balance cap (9) is attached to the groove wall of the first accommodating groove (81) and can slide along the groove wall of the first accommodating groove (81);
the pressure generated by the exhaust gas in the air inlet channel (7) acting on the valve cap (3) is equal to and opposite to the pressure generated by the exhaust gas acting on the balance cap (9);
the air inlet channel (7) is arranged on the side surface of the valve body (1), the air outlet channel (8) is arranged on the bottom surface of the valve body (1), and the air inlet channel (7) is communicated with the air outlet channel (8) in a right angle;
the valve cap (3) and the balance cap (9) are integrally formed into a cap body component (11) through a connecting sleeve (10), and the push rod (5) penetrates through the cap body component (11) and is fixedly connected with the cap body component (11).
2. The EGR valve according to claim 1, wherein an end cover (2) is arranged at the joint of the intake passage (7) and the exhaust passage (8), the end cover (2) is fixedly connected with the valve body (1), and the valve cap (3) can be abutted against the end cover (2) to realize the sealing of the intake passage (7) and the exhaust passage (8).
3. The EGR valve according to claim 2, wherein the end cover (2) is a circular ring structure, the diameter of the inner ring surface of the end cover (2) is smaller than the outer diameter of the valve cap (3), and the valve cap (3) can abut against the inner ring surface of the end cover (2) from the exhaust passage (8) side, so that the valve cap (3) seals the intake passage (7) and the exhaust passage (8).
4. The EGR valve of claim 1, wherein the bottom of the first receiving groove (81) is further provided with a second receiving groove (82), a shaft sleeve (4) is arranged in the second receiving groove (82), and the push rod (5) is arranged in the shaft sleeve (4) in a penetrating manner.
5. The EGR valve according to claim 1, wherein an installation groove is formed on the outer peripheral surface of the balance cap (9), a seal ring (91) is embedded in the installation groove, and the seal ring (91) can be attached to the first accommodation groove (81).
6. The EGR valve according to claim 3, characterized in that the valve cap (3) comprises a connecting portion (31) and a bent portion (32), the bent portion (32) is arranged at the periphery of the connecting portion (31) and forms an included angle with the connecting portion (31), the connecting portion (31) is connected with the connecting sleeve (10), and the bent portion (32) can abut against the inner annular surface of the end cover (2).
7. An EGR valve according to claim 2, characterized in that the direction of movement of the valve cap (3) away from the end cover (2) is the same as the direction of flow of exhaust gases.
8. An engine, characterized in that an EGR valve according to any one of claims 1 to 7 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879406.XA CN108979906B (en) | 2018-08-03 | 2018-08-03 | EGR valve and engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879406.XA CN108979906B (en) | 2018-08-03 | 2018-08-03 | EGR valve and engine |
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| CN108979906A CN108979906A (en) | 2018-12-11 |
| CN108979906B true CN108979906B (en) | 2020-11-20 |
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| CN201810879406.XA Active CN108979906B (en) | 2018-08-03 | 2018-08-03 | EGR valve and engine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230558A (en) * | 2019-06-29 | 2019-09-13 | 无锡同益汽车动力技术有限公司 | A kind of double spool hot end EGR valve valve seat construction |
| CN112594071A (en) * | 2020-12-08 | 2021-04-02 | 安徽江淮汽车集团股份有限公司 | EGR valve control method, control device and computer readable storage medium |
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| US4349003A (en) * | 1979-06-29 | 1982-09-14 | Toyota Jidosha Kogyo Kabushiki Kaisha | Exhaust gas recirculation control valve |
| CN1154454A (en) * | 1995-10-26 | 1997-07-16 | 特拉华兰科有限公司 | Valve |
| CN1391048A (en) * | 2001-06-08 | 2003-01-15 | 沈锝桓 | Flow balance regulator for hydraulic press |
| CN2751154Y (en) * | 2004-12-17 | 2006-01-11 | 王进丁 | Automobile exhaust gas recirculation valve |
| CN102733875A (en) * | 2012-06-12 | 2012-10-17 | 东风朝阳朝柴动力有限公司 | Roller-type hydraulic rocking arm component |
| CN202789205U (en) * | 2012-09-28 | 2013-03-13 | 昌辉汽车电器（黄山）股份公司 | Automobile exhaust recycling valve with sensor |
| CN208168991U (en) * | 2018-03-09 | 2018-11-30 | 大陆汽车电子(芜湖)有限公司 | idle air control valve assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108979906A (en) | 2018-12-11 |
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