CN109058002A - The internal combustion engine EGR check valve of the oxynitrides in tail gas can be reduced - Google Patents
The internal combustion engine EGR check valve of the oxynitrides in tail gas can be reduced Download PDFInfo
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- CN109058002A CN109058002A CN201810708186.4A CN201810708186A CN109058002A CN 109058002 A CN109058002 A CN 109058002A CN 201810708186 A CN201810708186 A CN 201810708186A CN 109058002 A CN109058002 A CN 109058002A
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Abstract
The internal combustion engine EGR check valve of the oxynitrides in tail gas can be reduced the present invention relates to one kind, it includes hollow shell, partition is equipped in shell, partition is suitable for the inner cavity of shell being divided into two cavitys, partition is equipped with the through-hole of two cavitys of connection, spool can be freely snug fit in a wherein cavity, cooperation is sealed between spool and the adjacent wall surface of the cavity, the side wall adjacent with the cavity is equipped at least one annular groove on spool, the air intake branch being connected to the cavity and the first guiding branch pipe are respectively equipped on the lateral wall of the cavity, when spool slides into required position, annular groove is suitable for connection air intake branch and the first guiding branch pipe；The side wall of another cavity is equipped with the second guiding branch pipe being connected to the cavity, elastic connection between spool and shell, and the first, second guiding branch pipe is suitable for being connected to the exhaust pipe of internal combustion engine；It is stable and reliable in work, overcome the sealing problem of valve caused by being deposited by soot particulate matter in exhaust gas.
Description
Technical field
The internal combustion engine EGR check valve that the oxynitrides in tail gas can be reduced the present invention relates to one kind, can be improved EGR
The job stability of system.
Background technique
Internal-combustion engine system generally includes an exhaust gas recirculation or exhaust gas recycling (EGR) system to reduce nitrogen in engine exhaust gas
The content of oxygen compound, when internal combustion engine is under the loading condiction of setting, the EGR valve in egr system is opened or portion separates
Access between exhaust pipe and air inlet pipe is opened, enters portion together with outside air through air inlet pipe and participates in burning in cylinder,
Slow down the speed of burning, reduce the pressure in burning exhaust hood, to reduce the production quantity of oxynitrides.
Existing EGR valve is generally passed using internal combustion engine computer (ECU) acquisition EGR valve position to improve the precision of control
The signal of sensor simultaneously controls the rotation of the motor in EGR valve, the open and close of valve is driven by motor, the course of work includes adopting
Collect valve open-close state signal, ECU calculating control parameter, ECU and transmits control signal, the opening and closing of motor driven valve to motor, it is whole
Although a process can quickly complete, there is regular hour delay, not adapting to internal combustion engine, constantly to change work negative
The case where lotus；Motor and EGR valve position sensor are generally all installed on the side of EGR valve simultaneously, due to passing through height in EGR valve
The exhaust gas of temperature, high pressure makes the operating temperature of EGR valve at 300 degrees Celsius or more, and motor and sensor are for a long time in the temperature environment
Work is easily damaged, and vibration can be generated when the exhaust gas of high pressure passes through EGR valve, which generates destruction to the sensor and motor
Property influence, both make to be easily damaged.
Chinese patent literature number is that the patent document of CN104373254A discloses a kind of non-rice habitats internal combustion engine EGR valve,
The valve controls the valve opening and closing of EGR valve by the boost pressure in inlet manifold, and the control mechanism of this Purely mechanical overcomes
The shortcomings that above-mentioned electric control EGR valve, however the sealing between spool and valve seat with credit union due in exhaust gas soot particulate matter sealing
Deposition on face and fail.
Summary of the invention
It is stable and reliable in work technical problem to be solved by the invention is to provide a kind of EGR check valve, it overcomes by exhaust gas
The sealing problem of valve caused by middle soot particulate matter deposits.
In order to solve the above technical problem, the present invention provides a kind of EGR check valves comprising: hollow shell, in shell
Equipped with partition, partition is suitable for for being divided into the inner cavity of shell two cavitys, and partition is equipped with the through-hole of two cavitys of connection, and spool can
It is freely snug fit in a wherein cavity, cooperation is sealed between spool and the adjacent wall surface of the cavity, spool is equipped with extremely
Lack a gas passage, the air intake branch being connected to the cavity and the first guiding branch pipe are respectively equipped on the side wall of the cavity, when
When spool slides into required position, gas passage be suitable for connection air intake branch and the first guiding branch pipe；On the side wall of another cavity
Equipped be connected to the cavity second guiding branch pipe, elastic connection between spool and shell, first, second guiding branch pipe be suitable for and
The exhaust pipe of internal combustion engine is connected to.
The gas passage is the annular groove that the spool side wall adjacent with place cavity is equipped with.
Described two cavitys are respectively left chamber and right chamber, and spool is snug fit in right chamber, and the first guiding branch pipe is
Outside set on right chamber and the right guiding branch pipe that is connected to right chamber, air intake branch are set to the outside of right chamber and are connected to right chamber,
The second guiding branch pipe is outside and the left guiding branch pipe that is connected to left chamber set on left chamber；On the inside of spool and the right end of right chamber
It is connected between wall by spring, offers venthole on the right end inner sidewall of right chamber.
It is provided only with an annular groove on spool, opening is equipped in the spool towards right slot, one end of spring is pressed in this
In slot, the other end of spring is pressed on the right end inner sidewall of right chamber.
Described two cavitys are respectively left chamber and right chamber, and spool is snug fit in left chamber, and the first guiding branch pipe is
Outside set on left chamber and the left guiding branch pipe that is connected to left chamber, air intake branch are set to the outside of left chamber and are connected to left chamber,
The second guiding branch pipe is outside and the right guiding branch pipe that be connected to right chamber set on right chamber, the right end inside of spool and right chamber
It is connected between wall by spring, spring is arranged in through-hole, offers venthole on the left end inner sidewall of left chamber.
It is provided only with an annular groove on spool, opening is equipped in the spool towards right slot, one end of spring is fixed at
In the slot, the other end of spring is fixedly connected on the right end inner sidewall of right chamber.
The first guiding branch pipe and air intake branch diameter of bore having the same, the first guiding branch pipe and air intake branch
Center line is located in same housing cross section, annular groove and shell concentrically axis.
The present invention also provides a kind of working methods of above-mentioned EGR check valve comprising following steps:
A, when the engine operates, the exhaust gas in exhaust pipe enters in a cavity through the second guiding branch pipe, and exhaust gas via through holes enter
Thrust is generated where spool in cavity and to spool；
B, when the revolving speed n of internal combustion engine is 800≤n < 1500r/min, exhaust gas overcomes elastic force, spool is pushed to slide into through-hole and air inlet
Between branch pipe, gas passage and adjacent cavity inner wall on spool, which seal, to be cooperated, between air intake branch and the first guiding branch pipe
It is not connected to；
C, when the revolving speed n of internal combustion engine is 1500≤n < 2500r/min, exhaust gas, which overcomes elastic force, continues to press on spool slides into gas
Channel position corresponding with air intake branch, the first guiding branch pipe, air intake branch passes through gas passage and the first guiding branch at this time
Pipe is connected to, and the exhaust gas in exhaust pipe enters in air intake branch；
D, when the revolving speed n of internal combustion engine be n >=2500r/min, exhaust gas overcome elastic force, continue to press on spool slide into air intake branch with
Between adjacent cavity end, gas passage and adjacent cavity inner wall seal and cooperate, air intake branch with first be oriented to branch pipe it
Between be not connected to；
E, when internal combustion engine stops working, exhaust gas pressure disappears, and spool is acted on by elastic force, slides into one of adjacent through-holes in cavity
End.
The present invention also provides a kind of internal combustion engine, which uses above-mentioned EGR check valve.
The present invention also provides a kind of automobile, which uses above-mentioned internal combustion engine.
Compared with the existing technology, what the present invention had has the technical effect that
(1) relative to automatically controlled EGR valve, EGR check valve of the invention carrys out the opening and closing of control valve by exhaust gases of internal combustion engines pressure,
The opening and closing of valve can be continuously adjusted within the required range, response speed is faster than the EGR valve using automatically controlled mode, simultaneously because
The EGR check valve uses pure mechanic structure, and reliability is better than the EGR valve of automatically controlled mode；When EGR check valve is opened, exhaust gas
Only pass through annular groove when flowing through spool, will not be on the inner wall of annular groove and right by sealing mating surface between spool and right chamber inner wall
Being oriented to remaining soot particulate matter on the inner hole wall of branch pipe, air intake branch will not influence the leakproofness between spool and right chamber inner wall.
(2) by increasing the width of annular groove, internal combustion engine can be made to keep opening for EGR valve in bigger operating load range
Open state, it is on the contrary then internal combustion engine is made to keep the unlatching of EGR valve in smaller operating load range.
(3) spacing that multiple annular grooves and the adjacent annular groove of change are arranged on the lateral wall of spool can change internal combustion engine each
Amount of exhaust gas recirculation under kind load, makes egr system can adapt to the various workloads of internal combustion engine.
(4) venthole guarantees that spool when sliding in the inner cavity of shell, the air pressure of spool side and the external world are consistent, from
It and be snug fit at spool can freely in the cavity of shell.
(5) side of spring is set in slot, and radial direction of the slot to spring along shell limits, when maintaining spring works
Stability.
(6) first guiding branch pipes are identical as the diameter of bore of air intake branch, and exhaust gas flow velocity when flowing through the two can be made to protect
It is fixed to keep steady, and prevents due to the pipeline resonance that the fluctuation of exhaust gas flow velocity generates in pipe.
(7) first guiding branch pipes and the center line of air intake branch are located in same housing cross section, during annular groove and shell are total to
Mandrel line, flow velocity is more stable when flowing to air intake branch when exhaust gas can be made to flow to annular groove from the first guiding branch pipe, from annular groove, reduces
Tube wall or annular groove wall increase the flow velocity and inertia of air-flow, reduce soot particulate matter deposition to the resistance of air-flow.
(8) gas passage uses annular groove, relative to through-hole mode is used, increases exhaust gas by inertia when annular groove,
Annular groove inner wall and cavity inner wall corresponding with annular groove are washed away, to reduce the soot particulate matter on the gas passage inner wall
Deposition.
Detailed description of the invention
In order to clearly illustrate the innovative principle of the present invention and its technical advantage compared to the existing product, below by way of attached
Figure illustrates possible embodiment by the non-limiting example of the application principle.In figure:
Fig. 1 is the structural schematic diagram of embodiment 1 in the present invention；
Fig. 2 is the structural schematic diagram of embodiment 2 in the present invention；
Fig. 3 is the structural schematic diagram of embodiment 3 in the present invention；
Fig. 4 is the structural schematic diagram of embodiment 4 in the present invention.
Specific embodiment
Embodiment 1
As shown in Figure 1, EGR check valve includes shell 1, and partition 2, left chamber 3, through-hole 4, left guiding branch pipe 5, right guiding branch pipe 6, into
Gas branch pipe 7, spool 8, slot 9, spring 10, venthole 11, right chamber 12, exhaust pipe 13, annular groove 14.
It is equipped with partition 2 in closed cylinder-shaped thin wall shape shell 1, the inner cavity of shell 1 is divided into left chamber 3 and the right side by partition 2
Chamber 12, partition 2 are equipped with the through-hole 4 of connection left chamber 3 and right chamber 12, are sliding combined with spool 8, spool 8 and right chamber in right chamber 12
12 inside circumference wall seals cooperation, and opening is equipped in spool 8 towards right slot 9,8 middle part of the spool outside adjacent with right chamber 12
An annular groove 14 is offered on wall, as a preference, concentrically axis, the right side wall of shell 1 are equipped with one for annular groove 14 and shell 1
Venthole 11, spring 10 is arranged in slot 9 and left end is pressed in the inner left wall of slot 9, and the right end of spring 10 is pressed in
On the right side inner wall of shell 1, the internal diameter of the venthole 11 is less than the outer diameter of spring 10, and spring 10 is in 8 sliding process of spool
Always it is in compressive state, is connected with air intake branch 7 on the lateral wall of right chamber 12, air intake branch 7 is connected to right chamber 12, air inlet branch
Pipe 7 is suitable for guiding gas into the air inlet pipe of internal combustion engine, and left guiding branch pipe 5, left guiding branch are connected on the lateral wall of left chamber 3
Pipe 5 is connected to left chamber 3, and right guiding branch pipe 6 is connected on the lateral wall of right chamber 12, and right guiding branch pipe 6 has phase with air intake branch 7
Same diameter of bore, right guiding branch pipe 6 is connected to right chamber 12 and the center line of right guiding branch pipe 6 and air intake branch 7 is positioned at same
(perpendicular to the section of shell axial direction) in housing cross-sectional, the lower end of left guiding branch pipe 5 and right guiding branch pipe 6 accumulates single pipe
Road is simultaneously connected to the exhaust pipe of internal combustion engine 13.
Spool 8 is matched with the length of right chamber 12, when so that spool 8 sliding between the left and right extreme position of right chamber 12,
It is connected to right chamber 12 not with air intake branch 7, right guiding branch pipe 6.
The course of work of EGR check valve include: (1) when the engine operates, exhaust gas in exhaust pipe 13 is through left guiding branch
Pipe 5 enters left chamber 3, and exhaust gas is by through-hole 4, and into right chamber 12, exhaust gas generates thrust to the right to spool 8；
(2) when internal combustion engine in the slow-speed of revolution (revolving speed n is 800≤n < 1500r/min), exhaust gas pressure overcomes the bullet of spring 10
Power pushes spool 8 to slide to the right, and the air in right chamber 12 is discharged from venthole 11, however exhaust gas pressure is low at this time, makes spool
8 are located at the left part of right chamber 12, and the inner wall that 7 left side of air intake branch is located in annular groove 14 and right chamber 12, which seals, to be cooperated, air intake branch 7 with
It is not connected between right guiding branch pipe 6；
(3) when internal combustion engine in moderate rotation (revolving speed n is 1500≤n < 2500r/min), exhaust gas pressure continues to increase simultaneously
Overcome the elastic force of spring 10, spool 8 is pushed to slide to the right, annular groove 14 is moved to corresponding with air intake branch 7, right guiding branch pipe 6
Position, air intake branch 7 is connected to by annular groove 14 with right guiding branch pipe 6 at this time, and the exhaust gas in exhaust pipe 13 is through right guiding branch pipe
6, annular groove 14 enters in air intake branch 7, and exhaust gas is entered by air intake branch 7 in the air inlet pipe of internal combustion engine；
(4) when internal combustion engine in high revolving speed (revolving speed n is n >=2500r/min), exhaust gas pressure continues to increase and overcomes spring
10 elastic force pushes spool 8 to slide to the right, so that spool 8 is located at the right part of right chamber 12, is located at air inlet branch on annular groove 14 and right chamber 12
The inner wall on 7 right side of pipe seals cooperation, is not connected between air intake branch 7 and right guiding branch pipe 6.
(5) when internal combustion engine stops working, exhaust gas pressure disappears, and under the effect of spring 10, spool 8 slides into right chamber 12
Left end, extraneous air are entered in right chamber 12 by venthole 11.
When exhaust gas pressure is constant, the notch of the exhausted air quantity and annular groove 14 that pass through in the unit time is led with air intake branch 7, the right side
Registration to 6 inner hole of branch pipe is related, when the inner hole of the notch of annular groove 14 and air intake branch 7, right guiding branch pipe 6 is completely coincident
Gas-flow resistance minimum, the exhausted air quantity passed through in the unit time are maximum, and in spool 8 to the right sliding process, gas-flow resistance first reduces
After increase, exhaust gas flow first increases and then decreases in the unit time.
By increasing the width of annular groove 14, internal combustion engine can be made to keep opening for EGR valve in bigger operating load range
Open state, it is on the contrary then internal combustion engine is made to keep the unlatching of EGR valve in smaller operating load range.
Embodiment 2
As shown in Fig. 2, the present embodiment is relative to the difference of embodiment 1: it is opened up on the lateral wall of spool 8 there are two annular groove,
Respectively annular groove 1 and annular groove 2 142, the spacing that multiple annular grooves and the adjacent annular groove of change are arranged can change internal combustion engine not
Amount of exhaust gas recirculation under same load condition, the oxynitrides in tail gas is reduced using egr system.
Embodiment 3
The present embodiment is relative to the difference of embodiment 1: as shown in figure 3, spool 8 is snug fit in left chamber 3, air intake branch
7 are connected on the lateral wall of left chamber 3 and the center line of left guiding branch pipe 5 and air intake branch 7 is located in same housing cross section, bullet
Spring 10 is arranged in through-hole 4, and one end of spring 10 is fixedly connected with the inner left wall of slot 9, the other end and shell 1 of spring 10
Right side inner wall be fixedly connected, venthole 11 be set to left chamber 3 left side wall on, spring 10 is located always in 8 sliding process of spool
In tensional state.Spool 8 is matched with the length of left chamber 3, so that spool 8 slides between the left and right extreme position of left chamber 3
When, it is connected to left chamber 3 not with air intake branch 7, left guiding branch pipe 5.
The course of work of EGR check valve in the present embodiment includes:
(1) when the engine operates, the exhaust gas in exhaust pipe 13 enters right chamber 12 through right guiding branch pipe 6, and exhaust gas passes through through-hole 4,
Into in left chamber 3, exhaust gas generates thrust to the left to spool 8；
(2) when the revolving speed n of internal combustion engine be 800≤n < 1500r/min, exhaust gas pressure overcome spring 10 elastic force, push spool 8 to
Left sliding, the air in left chamber 3 are discharged from venthole 11, and spool 8 is located at the right part of left chamber 3 at this time, on annular groove 14 and left chamber 3
Inner wall positioned at 7 right side of air intake branch seals cooperation, is not connected between air intake branch 7 and left guiding branch pipe 5；
(3) when the revolving speed n of internal combustion engine is 1500≤n < 2500r/min, exhaust gas pressure continue to increase and overcome the elastic force of spring 10,
Spool 8 is pushed to slide to the left, annular groove 14 is moved to position corresponding with air intake branch 7, left guiding branch pipe 5, at this time air inlet branch
Pipe 7 is connected to by annular groove 14 with left guiding branch pipe 5, and the exhaust gas in exhaust pipe 13 enters air inlet branch through left guiding branch pipe 5, annular groove 14
In pipe 7；
(4) when the revolving speed n of internal combustion engine is n >=2500r/min, exhaust gas pressure continues to increase and overcome the elastic force of spring 10, push
Spool 8 slides to the left, and spool 8 is made to be located at the left part of left chamber 3, and annular groove 14 and the inner wall for being located at 7 left side of air intake branch in left chamber 3 are close
Envelope cooperation, is not connected between air intake branch 7 and left guiding branch pipe 5.
(5) when internal combustion engine stops working, exhaust gas pressure disappears, and under the effect of spring 10, spool 8 slides into left chamber 3
Right end, extraneous air are entered in left chamber 3 by venthole 11.
Embodiment 4
The present embodiment is relative to the difference of embodiment 1: as shown in figure 4, the center of the symmetrical center line of annular groove 14 and shell 1
Axis is in required angle, while air intake branch 7 is axially displaced from right guiding branch pipe 6 along shell 1, when spool 8 slides into setting
Position when, annular groove 14 be suitable for connection air intake branch 7 and right guiding branch pipe 6.
Embodiment 5
The present embodiment is relative to the difference of embodiment 1: vent hole was equipped in spool, when spool slides into required position
When, this is crossed vent hole and is suitable for connection air intake branch 7 and right guiding branch pipe 6.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to of the invention
The restriction of embodiment.For those of ordinary skill in the art, it can also be made on the basis of the above description
Its various forms of variation or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
The obvious changes or variations that bright spirit is extended out are still in the protection scope of this invention.
Claims (2)
1. a kind of EGR check valve, characterized by comprising: hollow shell (1), shell (1) is interior to be equipped with partition (2), partition (2)
Suitable for the inner cavity of shell (1) is divided into two cavitys, partition (2) is equipped with the through-hole (4) of two cavitys of connection, and spool (8) can
It is freely snug fit in a wherein cavity, seals and cooperate between spool (8) and the adjacent wall surface of the cavity, on spool (8)
Equipped at least one gas passage, it is respectively equipped with the air intake branch (7) being connected to the cavity on the side wall of the cavity and first leads
To branch pipe, when spool (8) slides into required position, gas passage be suitable for connection air intake branch (7) and first guiding branch pipe；Separately
The side wall of one cavity is equipped with the second guiding branch pipe being connected to the cavity, elastic connection between spool (8) and shell (1), the
One, the second guiding branch pipe is suitable for being connected to the exhaust pipe of internal combustion engine；
The gas passage is the annular groove (14) that spool (8) side wall adjacent with place cavity is equipped with；
Described two cavitys are respectively left chamber (3) and right chamber (12), and spool (8) is snug fit in right chamber (12), and described first
Guiding branch pipe is outside and the right guiding branch pipe (6) that be connected to right chamber (12) set on right chamber (12), and air intake branch (7) is set to right
The outside of chamber (12) and be connected to right chamber (12), the second guiding branch pipe be set on left chamber (3) outside and with left chamber (3)
The left guiding branch pipe (5) of connection；It is right by spring (10) elastic connection between spool (8) and the right end inner sidewall of right chamber (12)
Venthole (11) are offered on the right end inner sidewall of chamber (12)；
The first guiding branch pipe and air intake branch (7) diameter of bore having the same, first is oriented to branch pipe and air intake branch (7)
Center line be located in same housing cross section, annular groove (14) and shell (1) concentrically axis.
2. a kind of working method of EGR check valve described in claim 1, it is characterised in that the following steps are included:
A, when the engine operates, the exhaust gas in exhaust pipe (13) enters in a cavity through the second guiding branch pipe, exhaust gas via through holes
(4) thrust is generated where entering spool (8) in cavity and to spool (8)；
B, when the revolving speed n of internal combustion engine is 800≤n < 1500r/min, exhaust gas overcomes elastic force, spool (8) is pushed to slide into through-hole (4)
Between air intake branch (7), gas passage and adjacent cavity inner wall on spool, which seal, to be cooperated, air intake branch (7) and first
It is not connected between guiding branch pipe；
C, when the revolving speed n of internal combustion engine is 1500≤n < 2500r/min, exhaust gas, which overcomes elastic force, continues to press on spool (8) slides into gas
The corresponding position of body channel and air intake branch (7), the first guiding branch pipe, air intake branch (7) passes through gas passage and the at this time
One guiding branch pipe is connected to, and the exhaust gas in exhaust pipe (13) enters in air intake branch (7)；
D, when the revolving speed n of internal combustion engine is n >=2500r/min, exhaust gas, which overcomes elastic force, continues to press on spool (8) slides into air inlet branch
It manages between (7) and adjacent cavity end, gas passage and adjacent cavity inner wall seal and cooperate, air intake branch (7) and first
It is not connected between guiding branch pipe；
E, when internal combustion engine stops working, exhaust gas pressure disappears, and spool (8) is acted on by elastic force, slides into adjacent through-holes in cavity
(4) one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810708186.4A CN109058002A (en) | 2015-03-19 | 2015-03-19 | The internal combustion engine EGR check valve of the oxynitrides in tail gas can be reduced |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810708186.4A CN109058002A (en) | 2015-03-19 | 2015-03-19 | The internal combustion engine EGR check valve of the oxynitrides in tail gas can be reduced |
| CN201510120753.0A CN106032781B (en) | 2015-03-19 | 2015-03-19 | EGR check valves and internal combustion engine, the automobile using the valve |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510120753.0A Division CN106032781B (en) | 2015-03-19 | 2015-03-19 | EGR check valves and internal combustion engine, the automobile using the valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109058002A true CN109058002A (en) | 2018-12-21 |
Family
ID=57149118
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810709977.9A Pending CN109026456A (en) | 2015-03-19 | 2015-03-19 | Internal combustion engine stable and reliable in work EGR check valve |
| CN201510120753.0A Active CN106032781B (en) | 2015-03-19 | 2015-03-19 | EGR check valves and internal combustion engine, the automobile using the valve |
| CN201810708189.8A Pending CN109139308A (en) | 2015-03-19 | 2015-03-19 | The working method of internal combustion engine EGR check valve |
| CN201810709975.XA Pending CN109139309A (en) | 2015-03-19 | 2015-03-19 | Adapt to the EGR check valve of the various workloads of internal combustion engine |
| CN201810708186.4A Pending CN109058002A (en) | 2015-03-19 | 2015-03-19 | The internal combustion engine EGR check valve of the oxynitrides in tail gas can be reduced |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810709977.9A Pending CN109026456A (en) | 2015-03-19 | 2015-03-19 | Internal combustion engine stable and reliable in work EGR check valve |
| CN201510120753.0A Active CN106032781B (en) | 2015-03-19 | 2015-03-19 | EGR check valves and internal combustion engine, the automobile using the valve |
| CN201810708189.8A Pending CN109139308A (en) | 2015-03-19 | 2015-03-19 | The working method of internal combustion engine EGR check valve |
| CN201810709975.XA Pending CN109139309A (en) | 2015-03-19 | 2015-03-19 | Adapt to the EGR check valve of the various workloads of internal combustion engine |
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| CN (5) | CN109026456A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486031A (en) * | 2020-06-10 | 2020-08-04 | 安徽腾达汽车科技有限公司 | Efficient EGR valve |
| CN112922697B (en) * | 2021-02-05 | 2022-01-14 | 常州科普动力机械有限公司 | Multifunctional tail gas purification treatment device for diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140033A (en) * | 2007-09-07 | 2008-03-12 | 潘吉君 | Low pressure combustible gas double drives valve |
| CN202194743U (en) * | 2011-08-04 | 2012-04-18 | 安徽全柴动力股份有限公司 | Mechanical type exhaust gas recirculation valve suitable for non-road supercharged diesel engine |
| CN202756124U (en) * | 2012-07-12 | 2013-02-27 | 上海交通大学 | Up-and-down moving device of moving body |
| CN103195618A (en) * | 2013-03-22 | 2013-07-10 | 上海交通大学 | Heat exchange device of air inlet and outlet pipe system |
| CN204493017U (en) * | 2015-03-19 | 2015-07-22 | 常州科普动力机械有限公司 | EGR check valve and adopt internal-combustion engine, the automobile of this valve |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2318917C3 (en) * | 1973-04-14 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | Control device for exhaust gas recirculation |
| US4269159A (en) * | 1978-10-12 | 1981-05-26 | Lucas Industries Limited | Engine system |
| DE3316219C1 (en) * | 1983-05-04 | 1984-07-12 | Pierburg Gmbh & Co Kg, 4040 Neuss | Control device for the recirculation of exhaust gas into the intake line of an internal combustion engine |
| FR2660016B1 (en) * | 1990-03-23 | 1994-08-05 | Peugeot | DEVICE FOR RECIRCULATING EXHAUST GAS FROM A COMPRESSION IGNITION ENGINE. |
| US6435168B1 (en) * | 2000-02-24 | 2002-08-20 | Delphi Technologies, Inc. | Pressure balancing metering subassembly for use with a modular EGR valve |
| US7143993B2 (en) * | 2003-01-17 | 2006-12-05 | Siemens Vdo Automotive, Inc. | Exhaust gas recirculation valve having a rotary motor |
| US7213586B2 (en) * | 2004-08-12 | 2007-05-08 | Borgwarner Inc. | Exhaust gas recirculation valve |
| FR2902465B1 (en) * | 2006-06-14 | 2010-06-18 | Peugeot Citroen Automobiles Sa | ANTI-EMERGENCY DEVICE FOR A THERMAL ENGINE EGR VALVE, AND EGR VALVE INCORPORATING SUCH A DEVICE |
| CN201827470U (en) * | 2010-10-30 | 2011-05-11 | 无锡隆盛科技有限公司 | Electronic pressure adjusting valve |
| CN102588152A (en) * | 2012-02-07 | 2012-07-18 | 上海交通大学 | Self-adjusting exhaust gas recycling system |
| CN102691594A (en) * | 2012-06-27 | 2012-09-26 | 无锡隆盛科技股份有限公司 | EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of valve rod |
| CN103527324A (en) * | 2013-10-13 | 2014-01-22 | 刘飞 | Differential-pressure type gas valve lift adjusting mechanism |
| CN203756373U (en) * | 2014-04-02 | 2014-08-06 | 温州市日益机车部件有限公司 | Stepping motor type exhaust gas recirculation valve for automobile |
-
2015
- 2015-03-19 CN CN201810709977.9A patent/CN109026456A/en active Pending
- 2015-03-19 CN CN201510120753.0A patent/CN106032781B/en active Active
- 2015-03-19 CN CN201810708189.8A patent/CN109139308A/en active Pending
- 2015-03-19 CN CN201810709975.XA patent/CN109139309A/en active Pending
- 2015-03-19 CN CN201810708186.4A patent/CN109058002A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140033A (en) * | 2007-09-07 | 2008-03-12 | 潘吉君 | Low pressure combustible gas double drives valve |
| CN202194743U (en) * | 2011-08-04 | 2012-04-18 | 安徽全柴动力股份有限公司 | Mechanical type exhaust gas recirculation valve suitable for non-road supercharged diesel engine |
| CN202756124U (en) * | 2012-07-12 | 2013-02-27 | 上海交通大学 | Up-and-down moving device of moving body |
| CN103195618A (en) * | 2013-03-22 | 2013-07-10 | 上海交通大学 | Heat exchange device of air inlet and outlet pipe system |
| CN204493017U (en) * | 2015-03-19 | 2015-07-22 | 常州科普动力机械有限公司 | EGR check valve and adopt internal-combustion engine, the automobile of this valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106032781B (en) | 2018-07-03 |
| CN109139308A (en) | 2019-01-04 |
| CN109026456A (en) | 2018-12-18 |
| CN109139309A (en) | 2019-01-04 |
| CN106032781A (en) | 2016-10-19 |
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Application publication date: 20181221 |