CN114645806A - Exhaust gas recirculation valve - Google Patents
Exhaust gas recirculation valve Download PDFInfo
- Publication number
- CN114645806A CN114645806A CN202210093054.1A CN202210093054A CN114645806A CN 114645806 A CN114645806 A CN 114645806A CN 202210093054 A CN202210093054 A CN 202210093054A CN 114645806 A CN114645806 A CN 114645806A
- Authority
- CN
- China
- Prior art keywords
- air inlet
- sleeve
- flow channel
- valve plate
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- F02M26/52—Systems for actuating EGR valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The application discloses exhaust gas recirculation valve includes: the circulating valve body is provided with an air inlet flow channel and an air outlet flow channel which are communicated with each other; the valve plate is movably arranged at the joint of the air inlet flow passage and the air outlet flow passage; the opening and closing device is used for driving the valve plate to open and close so as to cut off or connect the communicating end buffer unit of the air outlet flow channel and the air inlet flow channel, and comprises a buffer sleeve, a buffer hole and a discharge hole; wherein, the cushion collar is installed in the air inlet channel, waste gas discharges through the discharge hole after a plurality of buffering hole dispersions, when automobile engine suddenly accelerates or during the loading suddenly, the device drive valve plate that opens and shuts is closed, waste gas atmospheric pressure gets into the air inlet channel, when the cushion collar, the impact force acts on the cushion collar, when big share high-pressure waste gas strikes the cushion collar, the part disperses in the air inlet channel through the buffering hole, reduce the impact force of waste gas, reduce the impact force that waste gas finally acted on the valve plate, avoid the valve plate to be washed out, make the engine of vehicle can provide sufficient power and braking effect at the crucial moment.
Description
Technical Field
The present invention relates to an exhaust gas recirculation valve.
Background
With the stricter emission regulations and oil consumption regulations, the primary goal of automobile development is energy conservation and emission reduction. An exhaust gas recirculation system (exhaust gas recirculation) is called an exhaust gas recirculation valve for short, and has been widely applied to the field of internal combustion engine emission control as a measure which has low cost, small modification on an internal combustion engine and can effectively reduce NOx emission.
The exhaust gas recirculation valve can reintroduce a proper amount of engine combustion exhaust gas into the air inlet pipe, and the exhaust gas is mixed with fresh air and then enters the cylinder for secondary combustion, so that the temperature in the cylinder during combustion is reduced, and the generation of NOx is inhibited because the NOx is generated under the condition of high temperature and oxygen enrichment. When the automobile engine is accelerated suddenly or loaded suddenly, the exhaust gas recirculation valve needs to be kept closed to ensure enough power, however, the exhaust pressure is greatly increased when the engine is accelerated suddenly, and the traditional exhaust gas recirculation valve is easily flushed by exhaust with higher pressure because the air inlet is positioned on the inner cavity wall formed by the valve plate and the inner wall of the valve body. For a large truck, an exhaust brake valve is further mounted on an exhaust tail pipe, and the exhaust brake valve is closed during braking to increase the exhaust gas pressure of an engine and enhance the braking effect, but the conventional exhaust gas recirculation valve also has the phenomenon that the exhaust brake valve is easily flushed by huge exhaust gas pressure when being closed, so that the braking effect cannot be ensured, and therefore, the improvement is needed.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art.
The present application provides an exhaust gas recirculation valve comprising:
the circulating valve body is provided with an air inlet flow channel and an air outlet flow channel which are communicated with each other;
the valve plate is movably arranged at the joint of the air inlet flow passage and the air outlet flow passage;
the opening and closing device is used for driving the valve plate to open and close so as to cut off or connect the communication end of the air outlet flow channel and the air inlet flow channel
A buffer unit including a buffer housing, a buffer hole, and a discharge hole;
wherein, the cushion collar is installed in the air inlet flow, and waste gas discharges through the discharge hole after a plurality of cushion holes dispersion.
The exhaust gas recirculation valve is adopted, an air inlet channel of a circulation valve body is communicated with an exhaust pipe, an air outlet channel is communicated with an air inlet pipe of an engine, when a vehicle normally runs, a switching device drives a valve plate to be opened, so that the air inlet channel is communicated with the air outlet channel, exhaust gas generated during the running of the engine flows through the air inlet channel, the air outlet channel and the air inlet pipe and enters the engine again for secondary combustion, so that the temperature in a cylinder during combustion is reduced, the generation of NOx is inhibited, when an automobile engine is accelerated suddenly or is loaded suddenly, a switching device drives a valve plate to be closed, so that the air outlet channel and the air inlet channel are cut off, the exhaust gas cannot be discharged into the air outlet channel from the air inlet channel, the pressure of the exhaust gas enters the air inlet channel, impact force acts on a buffer sleeve when the automobile engine passes through the buffer sleeve, and part of high-pressure exhaust gas is dispersed into the air inlet channel through buffer holes when impacting the buffer sleeve, the impact force of the waste gas is reduced, the impact force of the waste gas finally acting on the valve plate is reduced, the service life of the waste gas recirculation valve can be effectively prolonged, the engine of the vehicle at the key moment can provide sufficient power and braking effect, and the driving safety is guaranteed.
The longitudinal section of the valve plate is semicircular and the convex side of the valve plate faces the air outlet flow channel.
Further comprising:
the convex ring is arranged on the inner wall of the air inlet flow channel;
wherein, the one end of bulge loop is established to the cambered surface, and the cambered surface is laminated with the protruding side of valve plate when the valve plate is closed.
The buffer unit includes:
the mounting sleeve is embedded on the inner wall of the air inlet flow channel;
the lifting hole penetrates through the top end of the mounting sleeve;
wherein, the installation cover bottom is run through, and cushion collar movable mounting links with the device that opens and shuts in the lift hole, and the length that the cushion collar stretched into in the installation cover inner chamber when the valve plate was opened increases, and the length that the cushion collar lies in the installation cover inner chamber when the valve plate was closed reduces.
Preferably:
the buffer holes are annularly distributed and have multiple layers, and the diameter of the buffer hole closer to the air outlet flow passage is larger.
The cushion collar includes:
the air inlet sleeve is movably arranged in the lifting hole;
one end of the exhaust sleeve is communicated with the top end of the air inlet sleeve, and the other end of the exhaust sleeve extends to the air outlet flow channel;
wherein, each buffer hole distributes on the air inlet sleeve, and the discharge hole has a plurality ofly and sets up on the exhaust sleeve.
The device that opens and shuts includes:
the output end of the straight-moving power source is connected with the exhaust sleeve and is used for driving the air inlet sleeve to lift in the lifting hole;
the turnover plate is fixedly arranged on the side of the valve plate back to the air outlet flow passage;
the transmission groove is obliquely arranged on the turnover plate, and one end, close to the valve plate, of the transmission groove is higher than the other end of the transmission groove;
the rack is vertically and movably arranged in the air inlet flow channel;
the transmission block is fixedly arranged on the rack and is in transmission connection with the transmission groove;
the tooth group is arranged on the outer wall of the exhaust sleeve;
and the transmission gear is rotatably arranged on the inner wall of the air outlet flow passage and is meshed with the rack and the tooth group.
Further comprising:
the sliding chute is vertically arranged on the inner wall of the air inlet flow channel;
wherein, rack one side slidable mounting is in the spout, and the offside and returning face inboard butt.
Further comprising:
the snap ring is sleeved at the top end of the transmission block, and the cross section area of the snap ring is larger than the width of the transmission groove.
Preferably, the following components:
the straight-moving power source is one of a straight-moving cylinder, a straight-moving oil cylinder and a straight-moving electric cylinder.
The advantageous effects of the present invention will be explained in detail in the embodiments, thereby making the advantageous effects more apparent.
Drawings
FIG. 1 is a schematic illustration of a valve plate of an exhaust gas recirculation valve according to an embodiment of the present disclosure when closed;
FIG. 2 is a schematic structural diagram illustrating an embodiment of an EGR valve according to the present disclosure when a valve plate is open;
fig. 3 is a schematic view of a part a of the enlarged structure in fig. 2.
Reference numerals
1-circulating valve body, 2-air inlet channel, 3-air outlet channel, 4-valve plate, 5-buffer sleeve, 501-air inlet sleeve, 502-air exhaust sleeve, 6-buffer hole, 7-discharge hole, 8-convex ring, 9-mounting sleeve, 10-lifting hole, 11-straight power source, 12-turnover plate, 13-transmission groove, 14-rack, 15-transmission block, 16-tooth group, 17-transmission gear, 18-sliding groove, 19-snap ring, 20-buffer shell, 21-buffer piston and 22-emergency exhaust hole.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The server provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Example 1:
as shown in fig. 1 to 3, the present embodiment provides an exhaust gas recirculation valve, which includes a recirculation valve body 1 having an inlet flow passage 2 and an outlet flow passage 3 communicating with each other; the valve plate 4 is movably arranged at the joint of the air inlet flow passage 2 and the air outlet flow passage 3; the opening and closing device is used for driving the valve plate 4 to open and close so as to cut off or connect the communicating end buffer unit of the air outlet flow channel 3 and the air inlet flow channel 2, and comprises a buffer sleeve 5, buffer holes 6 and discharge holes 7, wherein the buffer sleeve 5 is installed in the air inlet flow channel 2, and waste gas is discharged through the discharge holes 7 after being dispersed through the buffer holes 6.
In the embodiment of the application, the exhaust gas recirculation valve is adopted to communicate the inlet flow channel 2 of the circulating valve body 1 with the exhaust pipe, the outlet flow channel 3 with the inlet pipe of the engine, when the vehicle normally runs, the opening and closing device drives the valve plate 4 to open, so that the inlet flow channel 2 is communicated with the outlet flow channel 3, the exhaust gas generated during the running of the engine flows through the inlet flow channel 2, the outlet flow channel 3 and the inlet pipe, and then enters the engine again to be combusted again, so as to reduce the temperature in the cylinder during the combustion and inhibit the generation of NOx, when the automobile engine is accelerated or suddenly loaded, the opening and closing device drives the valve plate 4 to close, so that the space between the outlet flow channel 3 and the inlet flow channel 2 is cut off, the exhaust gas cannot be discharged into the outlet flow channel 3 from the inlet flow channel 2, the pressure of the exhaust gas enters the inlet flow channel 2, when the exhaust gas passes through the buffer sleeve 5, the impact force acts on the buffer sleeve 5, and when a large stream of high-pressure exhaust gas impacts the buffer sleeve 5, part is dispersed to the air inlet flow passage 2 through the buffer hole 6, reduces the impact force of waste gas, reduces the impact force that the waste gas finally acts on the valve plate 4, can effectively improve the life of exhaust gas recirculation valve, makes the engine of crucial moment vehicle can provide sufficient power and braking effect, makes driving safety obtain guaranteeing.
Example 2:
in this embodiment, in addition to the structural features including the foregoing embodiment, it is preferable that:
the longitudinal section of the valve plate 4 is semicircular and its convex side faces the outlet flow channel 3.
In the embodiment, due to the adoption of the structure, when the valve plate 4 with the semicircular longitudinal section and the convex side facing the air outlet flow channel 3 is closed, the convex side of the valve plate impacts along with the exhaust pressure and is in increasingly close contact with the end part of the air outlet flow channel 3, the valve plate 4 is arranged with the semicircular longitudinal section, and one end of the valve plate is hinged and installed in the circulating valve body, so that the structural strength of the circulating valve is greatly improved, the circulating valve cannot be bent due to the exhaust impact, and the structural strength of the waste gas recirculation valve can be effectively improved.
Example 3:
in this embodiment, in addition to including the structural feature of the preceding embodiment, still include bulge loop 8, it sets up on the inner wall of air inlet channel 2, and bulge loop 8's one end is established to the cambered surface, and the cambered surface is laminated with the protruding side of valve plate 4 when valve plate 4 closes.
In this embodiment, because the structure mentioned above is adopted, setting through bulge loop 8, the material thickness that is located air outlet flow channel 3 and valve plate 4 contact area in making circulation valve body 1 increases, the structural strength that circulation valve body 1 is located air outlet flow channel 3 and valve plate 4 contact area has been improved, and simultaneously, make valve plate 4 protruding side laminate with the cambered surface of bulge loop 8 one side when it is closed, the area of contact of valve plate 4 protruding side with bulge loop 8 has been improved, be favorable to the dispersion and the reinforcing leakproofness of impact force, avoid circulation valve body 1 because of the waste gas impact force is too strong, valve plate 4 and 3 tip contact position ftractures of air outlet flow channel, lead to waste gas to leak outside air outlet flow channel 3 or circulation valve body 1, lead to the function of circulation valve body 1 to receive the harm, the phenomenon that influences driving safety takes place.
Example 4:
in this embodiment, in addition to the structural features of the previous embodiment, the buffer unit includes a mounting sleeve 9 which is embedded on the inner wall of the intake runner 2; the lift hole 10, it runs through the setting on installation cover 9 top, and installation cover 9 bottom runs through, and cushion collar 5 movable mounting links with the device that opens and shuts in lift hole 10, and the length that cushion collar 5 stretched into in the installation cover 9 inner chamber when valve plate 4 was opened increases, and the length that cushion collar 5 was located the installation cover 9 inner chamber when valve plate 4 was closed reduces.
In the embodiment, because the structure is adopted, the mounting sleeve 9 is embedded on the inner wall of the inlet flow channel 2, the outer wall of the mounting sleeve 9 is in interference fit with the inner wall of the inlet flow channel 2, then the buffer sleeve 5 is movably mounted in the lifting hole 10, along with the opening of the valve plate 4, the length of the buffer sleeve 5 extending into the inner cavity of the mounting sleeve 9 is increased, which means that the buffer holes 6 in the mounting sleeve 9 are increased, the waste gas can enter the mounting sleeve 9 through the buffer holes 6, then enters the inlet flow channel 2 through the discharge holes 7 and is close to the position of the outlet flow channel 3, the flow of the waste gas is increased, when the valve plate 4 is opened, the waste gas can normally pass through the inlet flow channel 2 and the outlet flow channel 3 and return to the air inlet pipe of the engine, the generation of NOx is inhibited, when the valve plate 4 is closed, the buffer sleeve 5 retracts to one end of the inlet flow channel 2 close to the outlet flow channel 3, the length of the buffer sleeve 5 in the mounting sleeve 9 is shortened, which means that the number of the buffer holes 6 in the mounting sleeve 9 is reduced, can play the effect of buffering waste gas pressure, through such mode, when making valve plate 4 open, the setting of cushion collar 5 and buffer hole 6 does not influence waste gas and normally passes through inlet channel 2 and the runner 3 of giving vent to anger, and when valve plate 4 closed, cushion collar 5 just can absorb waste gas impact force with the cooperation of buffer hole 6, reduces the influence of waste gas impact force to valve plate 4, has improved the practicality of product.
Example 5:
in this embodiment, in addition to the structural features including the foregoing embodiment, it is preferable that:
buffer holes 6 are annularly arranged and have multiple layers, and the diameter of buffer hole 6 closer to outlet flow passage 3 is larger.
In this embodiment, due to the adoption of the above structure, when the buffer sleeve 5 is inserted into the mounting sleeve 9 by increasing the diameter of the buffer hole 6 close to the gas outlet flow channel 3, the flow rate of the exhaust gas passing through each buffer hole 6 is increased, the flow rate of the exhaust gas passing through the gas inlet flow channel 2 and the gas outlet flow channel 3 is increased, and the generation effect of the NOx is suppressed.
Example 6:
in this embodiment, in addition to the structural features of the previous embodiment, the cushion collar 5 includes an air inlet collar 501 movably mounted in the lifting hole 10; one end of the exhaust sleeve 502 is communicated with the top end of the air inlet sleeve 501, the other end of the exhaust sleeve extends to the air outlet flow channel 3, the buffer holes 6 are distributed on the air inlet sleeve 501, and a plurality of discharge holes 7 are formed in the exhaust sleeve 502.
In the embodiment, due to the adoption of the structure, the waste gas enters the air inlet sleeve 501 through the buffer holes 6, enters the air exhaust sleeve 502 through the air inlet sleeve 501, is exhausted into the area, close to the air outlet flow channel 3, of the air inlet flow channel 2 through the plurality of exhaust holes 7, and is exhausted through the air outlet flow channel 3, and by means of the mode, a large strand of waste gas is divided into a plurality of strands, so that the air inflow is ensured, the impact force of the waste gas is reduced, and the service life of each part in the air outlet flow channel 3 is prolonged.
Example 7:
in this embodiment, in addition to the structural features of the previous embodiments, the opening and closing device includes a straight power source 11, the output end of which is connected to the exhaust sleeve 502 for driving the air inlet sleeve 501 to ascend and descend in the ascending and descending hole 10; the turnover plate 12 is fixedly arranged on the side of the valve plate 4 back to the air outlet flow channel 3; the transmission groove 13 is obliquely arranged on the turnover plate 12, and one end of the transmission groove close to the valve plate 4 is higher than the other end of the transmission groove; a rack 14 vertically movably installed in the intake runner 2; the transmission block 15 is fixedly arranged on the rack 14 and is in transmission connection with the transmission groove 13; the tooth group 16 is arranged on the outer wall of the exhaust sleeve 502; and the transmission gear 17 is rotatably arranged on the inner wall of the air outlet flow passage 3 and is meshed with the rack 14 and the tooth group 16.
In the embodiment, due to the adoption of the structure, the straight-moving power source 11 drives the exhaust sleeve 502 to lift in the intake runner 2, so that the intake sleeve 501 lifts in the lifting hole 10, meanwhile, power is transmitted to the transmission gear 17 through the tooth group 16, the transmission gear 17 rotates to drive the rack 14 and the tooth group 16 to move relatively, when the intake sleeve 501 descends in the lifting hole 10, the length of the intake sleeve 501 extending into the mounting sleeve 9 is increased, the air intake amount of exhaust gas is increased, the rack 14 ascends, the valve plate 4 is driven to turn over to the exhaust runner 3 around the hinge point of the valve plate and the circulating valve body 1 by the matching of the transmission block 15 and the transmission groove 13, so that the exhaust gas flows through the intake runner 2 and the exhaust runner 3 and returns to the intake pipe of the engine, when the intake sleeve 501 ascends in the lifting hole 10, the length of the intake sleeve 501 extending into the mounting sleeve 9 is shortened, the air intake amount of the exhaust gas is reduced, the rack 14 descends, the valve plate 4 is driven to overturn to close around the hinge point of the valve plate and the circulating valve body 1 through the matching of the transmission block 15 and the transmission groove 13, and the valve plate 4 and the air inlet sleeve 501 are convenient to control to run simultaneously in such a way, so that the situation that the exhaust gas recirculation valve cannot play a role at a critical moment due to the complexity of operation of a plurality of power sources and cannot avoid danger in time in the driving process due to misoperation is avoided.
Example 8:
in the present embodiment, in addition to the structural features of the previous embodiment, the present embodiment further includes a chute 18 vertically disposed on the inner wall of the intake runner 2, and one side of the rack 14 is slidably mounted in the chute 18, and the opposite side abuts against the inner surface of the roll-over plate 12.
In the present embodiment, since the above-described structure is adopted, one side of the rack 14 is limited by the arrangement of the chute 18, so that the stability of the rack 14 when the rack is lifted in the intake runner 2 is improved, and the rack 14 is limited by the engagement with the chute 18 by abutting the opposite side of the rack 14 against the inner surface of the roll-over plate 12, so that the stability of the rack 14 when the rack is moved in the intake runner 2 is improved.
Example 9:
in this embodiment, in addition to the structural features of the previous embodiment, the present embodiment further includes a snap ring 19, which is sleeved on the top end of the transmission block 15 and has a cross-sectional area larger than the width of the transmission groove 13.
In this embodiment, owing to adopted foretell structure, through the setting of snap ring 19, make the cooperation of drive block 15 and drive groove 13 firm, can not lead to drive block 15 to break away from drive groove 13 because of the vibrations that the vehicle travel in-process produced, make the unable normal open and shut of valve plate 4, and lead to the phenomenon that driving safety hidden danger improves to take place.
Example 10:
in this embodiment, in addition to the structural features including the foregoing embodiment, it is preferable that:
the straight-moving power source 11 is one of a straight-moving cylinder, a straight-moving oil cylinder and a straight-moving electric cylinder.
In this embodiment, because the structure is adopted, one of the straight-moving cylinder, the straight-moving oil cylinder and the straight-moving electric cylinder can be selected according to the adaptability of the vehicle system, so that the application range of the exhaust gas circulation valve is expanded, and the popularization and the use are convenient.
Example 11:
in this embodiment, in addition to the structural features of the previous embodiment, the present embodiment further includes a plurality of buffer shells 20, which are distributed on the side wall of the end of the air inlet sleeve 501 away from the air outlet sleeve 502; a plurality of buffer pistons 21 which are installed in each buffer housing 20 through springs; and a plurality of emergency exhaust holes 22 are formed and distributed on the outer wall of each buffer shell 20, and the emergency exhaust holes 22 are communicated with the inner cavity of the buffer shell 20 and the inner cavity of the air inlet sleeve 501 when the spring is compressed to the limit by the buffer piston 21.
In this embodiment, because the structure is adopted, when the impact force of the exhaust gas is too large, the buffer piston 21 is pushed towards the bottom of the buffer shell 20, the impact force is absorbed by the spring, when the impact force of the exhaust gas pushes the buffer piston 21 towards the bottom of the buffer shell 20 too much, and the spring is compressed to the limit, the emergency vent hole 22 is exposed, so that the inner cavity of the buffer shell 20 is communicated with the inner cavity of the air inlet sleeve 501, the exhaust gas enters the air inlet sleeve 501 from the emergency vent hole 22 and the buffer hole 6, so as to disperse the air pressure acting on the outer wall of the air inlet sleeve 501, thereby preventing the air inlet sleeve 501 from being damaged due to the too large air pressure, and improving the structural strength and the service life of the exhaust gas recirculation valve.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An exhaust gas recirculation valve, comprising:
the circulating valve body (1) is provided with an air inlet flow passage (2) and an air outlet flow passage (3) which are communicated with each other;
the valve plate (4) is movably arranged at the connecting part of the air inlet flow channel (2) and the air outlet flow channel (3);
the opening and closing device is used for driving the valve plate (4) to open and close so as to cut off or connect the communication end of the air outlet flow channel (3) and the air inlet flow channel (2)
The buffer unit comprises a buffer sleeve (5), a buffer hole (6) and a discharge hole (7);
wherein the buffer sleeve (5) is arranged in the air inlet flow channel (2), and the exhaust gas is discharged through a discharge hole (7) after being dispersed through the plurality of buffer holes (6).
2. An exhaust gas recirculation valve according to claim 1, wherein:
the longitudinal section of the valve plate (4) is semicircular, and the convex side of the valve plate faces the air outlet flow channel (3).
3. The exhaust gas recirculation valve of claim 2, further comprising:
a convex ring (8) arranged on the inner wall of the air inlet flow channel (2);
one end of the convex ring (8) is set to be an arc surface, and the arc surface is attached to the convex side of the valve plate (4) when the valve plate (4) is closed.
4. An exhaust gas recirculation valve according to claim 1, wherein the buffer unit comprises:
the mounting sleeve (9) is embedded on the inner wall of the air inlet runner (2);
the lifting hole (10) penetrates through the top end of the mounting sleeve (9);
wherein, installation cover (9) bottom is run through, cushion collar (5) movable mounting in lifting hole (10) with the device linkage that opens and shuts, the length increase that cushion collar (5) stretched into in installation cover (9) inner chamber when valve plate (4) were opened, the length reduction that cushion collar (5) were located in installation cover (9) inner chamber when valve plate (4) were closed.
5. An exhaust gas recirculation valve according to claim 4, wherein:
the buffer holes (6) are distributed annularly and have multiple layers, and the diameter of the buffer hole (6) closer to the air outlet flow channel (3) is larger.
6. An exhaust gas recirculation valve according to claim 4, characterized in that said damping sleeve (5) comprises:
the air inlet sleeve (501) is movably arranged in the lifting hole (10);
one end of the exhaust sleeve (502) is communicated with the top end of the air inlet sleeve (501), and the other end of the exhaust sleeve extends to the air outlet flow channel (3);
the buffer holes (6) are distributed on the air inlet sleeve (501), and the plurality of discharge holes (7) are formed in the air exhaust sleeve (502).
7. An exhaust gas recirculation valve according to claim 6, wherein said opening and closing means comprises:
the output end of the straight-moving power source (11) is connected with the exhaust sleeve (502) and is used for driving the air inlet sleeve (501) to lift in the lifting hole (10);
the turnover plate (12) is fixedly arranged on the side, back to the air outlet flow channel (3), of the valve plate (4);
the transmission groove (13) is obliquely arranged on the turnover plate (12) and one end, close to the valve plate (4), of the transmission groove is higher than the other end of the transmission groove;
a rack (14) vertically movably mounted in the intake runner (2);
the transmission block (15) is fixedly arranged on the rack (14) and is in transmission connection with the transmission groove (13);
a set of teeth (16) disposed on an outer wall of the exhaust sleeve (502);
and the transmission gear (17) is rotatably arranged on the inner wall of the air outlet flow passage (3) and is meshed with the rack (14) and the tooth group (16).
8. The exhaust gas recirculation valve of claim 7, further comprising:
a chute (18) vertically disposed on an inner wall of the intake runner (2);
one side of the rack (14) is slidably mounted in the chute (18), and the opposite side of the rack is abutted against the inner surface of the turnover plate (12).
9. The exhaust gas recirculation valve of claim 7, further comprising:
and the snap ring (19) is sleeved at the top end of the transmission block (15) and the cross section area of the snap ring is larger than the width of the transmission groove (13).
10. An exhaust gas recirculation valve according to claim 7, wherein:
the straight-moving power source (11) is one of a straight-moving cylinder, a straight-moving oil cylinder and a straight-moving electric cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210093054.1A CN114645806B (en) | 2022-01-26 | 2022-01-26 | Exhaust gas recirculation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210093054.1A CN114645806B (en) | 2022-01-26 | 2022-01-26 | Exhaust gas recirculation valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114645806A true CN114645806A (en) | 2022-06-21 |
| CN114645806B CN114645806B (en) | 2023-03-31 |
Family
ID=81994163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210093054.1A Active CN114645806B (en) | 2022-01-26 | 2022-01-26 | Exhaust gas recirculation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114645806B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1493914A1 (en) * | 2003-07-01 | 2005-01-05 | DaimlerChrysler AG | Exhaust gas recirculation valve for a combustion engine |
| CN103147881A (en) * | 2013-03-12 | 2013-06-12 | 第一拖拉机股份有限公司 | Force-closure eccentric cam transmission mechanism for EGR |
| US20150027420A1 (en) * | 2012-03-06 | 2015-01-29 | Pieburg Gmbh | Exhaust gas feed device for an internal combustion engine |
| CN106884745A (en) * | 2016-12-12 | 2017-06-23 | 中国第汽车股份有限公司 | A kind of big EGR rate introducing device for integrating pump, valve, blender |
| CN109736978A (en) * | 2019-04-04 | 2019-05-10 | 潍柴动力股份有限公司 | A kind of EGR mixer |
| CN109798205A (en) * | 2019-04-11 | 2019-05-24 | 潍柴动力股份有限公司 | EGR mixer and engine with it |
| CN110645121A (en) * | 2019-11-15 | 2020-01-03 | 无锡隆盛科技股份有限公司 | Intelligent EGR valve with pressure detection function |
| CN213510946U (en) * | 2020-10-09 | 2021-06-22 | 潍柴动力股份有限公司 | Air inlet mixing device and engine |
-
2022
- 2022-01-26 CN CN202210093054.1A patent/CN114645806B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1493914A1 (en) * | 2003-07-01 | 2005-01-05 | DaimlerChrysler AG | Exhaust gas recirculation valve for a combustion engine |
| US20150027420A1 (en) * | 2012-03-06 | 2015-01-29 | Pieburg Gmbh | Exhaust gas feed device for an internal combustion engine |
| CN103147881A (en) * | 2013-03-12 | 2013-06-12 | 第一拖拉机股份有限公司 | Force-closure eccentric cam transmission mechanism for EGR |
| CN106884745A (en) * | 2016-12-12 | 2017-06-23 | 中国第汽车股份有限公司 | A kind of big EGR rate introducing device for integrating pump, valve, blender |
| CN109736978A (en) * | 2019-04-04 | 2019-05-10 | 潍柴动力股份有限公司 | A kind of EGR mixer |
| CN109798205A (en) * | 2019-04-11 | 2019-05-24 | 潍柴动力股份有限公司 | EGR mixer and engine with it |
| CN110645121A (en) * | 2019-11-15 | 2020-01-03 | 无锡隆盛科技股份有限公司 | Intelligent EGR valve with pressure detection function |
| CN213510946U (en) * | 2020-10-09 | 2021-06-22 | 潍柴动力股份有限公司 | Air inlet mixing device and engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114645806B (en) | 2023-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4981119A (en) | Method of increasing the exhaust braking power of an internal combustion engine | |
| CN105612317A (en) | Valve-actuating device for changing the valve stroke | |
| EP0488386A1 (en) | Exhaust gas purifier for diesel engine | |
| CN114645806B (en) | Exhaust gas recirculation valve | |
| JP2010133337A (en) | Dual fuel diesel engine | |
| CN105683512B (en) | The air bleeding valve cooling means of air bleeding valve valve mechanism, diesel engine and air bleeding valve valve mechanism | |
| JP2003307133A (en) | Two-stroke engine with stepped piston | |
| CN102947573A (en) | Engine braking system using spring loaded valve | |
| JPS6032004B2 (en) | valve train | |
| CN210599209U (en) | Gasoline engine box and gasoline engine thereof | |
| CN106870131B (en) | Engine system and automobile applying same | |
| US6895909B2 (en) | Two-cycle combustion engine having two-staged piston | |
| EP3728814B1 (en) | Method for operating an internal combustion engine | |
| CN113279836A (en) | Engine system and vehicle | |
| CN101215980A (en) | Engine brake device | |
| CN222686748U (en) | Solenoid valve assembly for check valve device, check valve system and steam turbine | |
| CN219119332U (en) | Piston engine for driving intake valve to intake air based on negative pressure of combustion chamber | |
| KR200147466Y1 (en) | Supercharger for engine | |
| CN106762131B (en) | Engine system and automobile applying same | |
| CN211008877U (en) | Self-adaptive throttle adjusting device of diesel engine | |
| KR100384139B1 (en) | EGR valve for diesel engine | |
| CN207660731U (en) | A kind of tracheae in EGR valve | |
| CN201593452U (en) | Universal engine with low exhaust emission | |
| KR100304275B1 (en) | Exhaust brake for vehicle | |
| JPS59158365A (en) | Intake/exhaust device of engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20220621 Assignee: Wenzhou Zhongzhen Xinneng Automotive Technology Co.,Ltd. Assignor: WENZHOU WENNA AUTO PARTS CO.,LTD. Contract record no.: X2024980015609 Denomination of invention: A type of exhaust gas recirculation valve Granted publication date: 20230331 License type: Common License Record date: 20240919 Application publication date: 20220621 Assignee: Wenzhou Wenna Mold Co.,Ltd. Assignor: WENZHOU WENNA AUTO PARTS CO.,LTD. Contract record no.: X2024980015323 Denomination of invention: A type of exhaust gas recirculation valve Granted publication date: 20230331 License type: Common License Record date: 20240918 |
|
| EE01 | Entry into force of recordation of patent licensing contract |