CN209510483U - A kind of engine integrated exhaust gas recirculation valve - Google Patents

A kind of engine integrated exhaust gas recirculation valve Download PDF

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Publication number
CN209510483U
CN209510483U CN201822029410.5U CN201822029410U CN209510483U CN 209510483 U CN209510483 U CN 209510483U CN 201822029410 U CN201822029410 U CN 201822029410U CN 209510483 U CN209510483 U CN 209510483U
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China
Prior art keywords
exhaust
pipeline
spool
exhaust pipeline
gas
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CN201822029410.5U
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Chinese (zh)
Inventor
郭立新
胡猛
杨中伟
周得广
刘婷婷
杨海涛
张春丰
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FAW Jiefang Automotive Co Ltd
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FAW Jiefang Automotive Co Ltd
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Abstract

The utility model discloses a kind of engine integrated exhaust gas recirculation valves, the purpose of this utility model is to provide a kind of engine integrated exhaust gas recirculation valves, be adjustable enter engine aspirating system cycle gas amount while, the introducing of higher waste gas circulation amount still can be realized in engine with supercharger high load capacity, furthermore by closing first exhaust pipeline, have the function of exhaust brake valve, cooperate internal combustion oil of cylinder injection control, realizes the effect for promoting exhaust system temperature.The intersection of three gas exhaust pipings is arranged in the exhaust gas recirculation valve, by swinging and cooperating protrusion contour structure, forms sealing structure, control piper on-off to specific pipeline.

Description

A kind of engine integrated exhaust gas recirculation valve
Technical field
The utility model belongs to technical field of internal combustion engines, and in particular to a kind of engine integrated exhaust gas recirculation valve.
Background technique
In face of the engine emission regulation being increasingly stringenter, many technical measures are taken, wherein since exhaust gas recycles (EGR) NOx emission can be greatly reduced and is particularly subject to pay attention to, and be widely applied in engine development.EGR valve be exhaust gas again The executive component of EGR gas flow, important component of the EGR valve as egr system, the introducing to EGR are adjusted in the circulatory system There is vital influence.
EGR line is connected with gas exhaust piping in existing technology, and EGR valve is installed in EGR line, for controlling The introduction volume of EGR.If patent application CN101907045 A discloses a kind of EGR valve with air throttle, including EGR valve valve body, The lower part of EGR valve ontology is valve chamber, is provided with valve body outside valve chamber, gas inlet channel has been provided in valve body, valve body top is set It is equipped with spool, the side of valve body is provided with throttle valve device, and throttle valve device includes air inlet, mixed with air inlet opposite side Gas vent, throttle body, the valve block being arranged in throttle body, the drive shaft connecting with valve block are closed, outside throttle body It is additionally provided with the driving valve member with driving axis connection, the connection nozzle of design air on the valve body of EGR valve, body cavity dress Play the valve block of solar term, while axis and valve block that valve body-side design structure connect to drive EGR valve with the bracket of driving valve turn It is dynamic, EGR valve and air throttle one.
Patent application CN1076438C rotary diesel engine electric EGR valve, patent application CN106065834A EGR valve group EGR valve is installed in series to EGR and manages by part, patent application CN106762250A diesel engine EGR valve, the above patent structure Lu Zhong, though when EGR valve aperture maximum, often EGR be introduced into supercharged engine engineering application in there are one Fixed difficulty, boost pressure is lower when Smaller load, after can accessing booster by introducing exhaust gas before turbine, by turbine Exhaust gas pressure introduces exhaust gas than the high advantage of fresh air pressure after pressurization before machine, but EGR rate be subject to certain restrictions (even if EGR valve aperture is maximum, still has considerable part exhaust to flow into booster turbine by exhaust);In high load capacity, after supercharging air Pressure it is higher, even if EGR valve aperture is maximum, while check valve is used, because boost pressure can be higher than pressure at expulsion, still not EGR line can be introduced exhaust gas into.
In engine heating and regeneration mode, to meet SCR (Selective Catalytic Reduction, selection Property catalysis reduction, reduce a kind of after-treatment device of NOx emission) high efficiency and DPF (DieselParticulate Filter, diesel particulate filter are mounted in diesel engine truck exhaust system, and the dress of particulate matter in exhaust is reduced by filtering Set) regeneration when delivery temperature demand, engine exhaust thermal management technology is more and more widely used.It is low for low speed Load condition, delivery temperature is relatively low, and currently used temperature raising mode is using intake-air throttle valve.
Summary of the invention
The purpose of this utility model is to provide a kind of engine integrated exhaust gas recirculation valve, be adjustable into engine into While gas system circulation exhausted air quantity, the introducing of higher waste gas circulation amount still can be realized in engine with supercharger high load capacity, this It is outer to have the function of exhaust brake valve by closing first exhaust pipeline, cooperate internal combustion oil of cylinder injection control, realizes and promote exhaust system The effect for temperature of uniting.
The utility model to achieve the above object, adopts the following technical scheme that
A kind of engine integrated exhaust gas recirculation valve, including first exhaust pipeline 1, second exhaust pipeline 2, third exhaust pipe Road 3 and be adjustably controlled element composition;The first exhaust pipeline 1, second exhaust pipeline 2, the interconnection of 3 phase of third gas exhaust piping It connects and forms pipeline intersection 4;1 import of first exhaust pipeline is connected with one group of cylinder exhaust pipe of engine, outlet connecting pipe Road intersection 4;2 inlet connecting branch road intersection 4 of second exhaust pipeline, outlet are connected with EGR line;Third gas exhaust piping 3 into Mouth connecting line intersection 4, outlet is connected with the import of turbocharger turbine runner;Described is adjustably controlled element position In pipeline intersection 4;Exporting side in first exhaust pipeline 1 and be adjustably controlled element contact area has protrusion contour structure A5,2 entrance of second exhaust pipeline is with 1 opposite side of first exhaust pipeline and being adjustably controlled element contact area, there is protrusion to take turns Wide structure B11, the wall surface opposite with first exhaust pipeline 1 has concave type wheel between second exhaust pipeline 2 and third gas exhaust piping 3 Exterior feature 13 cooperates with element is adjustably controlled;The element that is adjustably controlled is valve arrangement, around the flow direction of opposite exhaust gas Lateral axis of oscillation can be swingingly arranged;The axis of oscillation is with respect to first exhaust pipeline 1, second exhaust pipeline 2 and The axis of three gas exhaust pipings 3 is vertically installed;Being adjustably controlled element crests can cooperatively form with protrusion contour structure A5 Sealing structure is adjustably controlled component base and is equipped with protrusion arcuate structure, has with 2 wall surface opposite position of second exhaust pipeline Boss 10, when spool closes first exhaust pipeline 1,2 import inner wall of second exhaust pipeline and the contact sealing of boss 10;
It is described be adjustably controlled element by with protrusion contour structure A5, protrusion contour structure B11 and concave profile 13, And the inner wall collective effect of first exhaust pipeline 1 and second exhaust pipeline 2 can by being adjustably controlled the swing of element To form following four state:
1) first exhaust pipeline 1 can be closed, makes the exhaust of one group of cylinder that can not flow to EGR line and turbocharger;
2) it is adjustably controlled element and only closes second exhaust pipeline 2, the exhaust of one group of cylinder is made all to flow to third exhaust Pipeline 3;
3) it is adjustably controlled element and only closes third gas exhaust piping 3, the exhaust of one group of cylinder is made all to flow to second exhaust Pipeline 2;
4) it is adjustably controlled element and controls the exhaust gas of the inflow of first exhaust pipeline 1 in second exhaust by adjusting swing angle The distribution of flow on pipeline 2 and third gas exhaust piping 3.
The element that is adjustably controlled is butterfly valve, and spool is laminated structure;7 respectively and first row at the top of the spool Air pipe two side walls and protrusion contour structure A cooperation, spool top are put at first exhaust tube outlet around axis of oscillation It is dynamic;
The spool bottom has protrusion arcuate structure with concave profile between second exhaust pipeline and third gas exhaust piping Collective effect closes the exhaust flowing between second exhaust pipeline and third gas exhaust piping, and spool bottom exists around axis of oscillation It is swung between second exhaust pipeline and third gas exhaust piping;
It is greater than rotation half of the spool bottom around axis of oscillation around the radius of turn of axis of oscillation at the top of the spool Diameter;
The axis of oscillation is located at first exhaust tube outlet or in pipeline intersectional region;
Protrusion contour structure A5, protrusion are respectively equipped at the downtake pipe exit and axis of oscillation relative wall Contour structure C14, at the top of spool respectively with first exhaust pipeline one side wall face and protrusion contour structure A5 and protrusion contour structure C14 cooperation, spool will be swung between mating surface on the outside of protrusion contour structure A5 pipeline wall surface and protrusion contour structure C14;
The utility model has the beneficial effects that
A kind of engine integrated exhaust gas recirculation valve provided by the utility model, is adjustable into engine aspirating system While cycle gas amount, the introducing of higher waste gas circulation amount still can be realized in engine with supercharger high load capacity;Furthermore pass through First exhaust pipeline is closed, has the function of exhaust brake valve, cooperation internal combustion oil of cylinder injection strategy adjustment is realized and promotes exhaust system The effect of temperature;It is simple with structure, the advantages of save the cost.
Detailed description of the invention
Fig. 1 is a kind of engine integrated exhaust gas recirculation valve schematic diagram of the utility model.
Fig. 2 is a kind of engine integrated exhaust gas recirculation valve swing position schematic diagram of the utility model, wherein I seals for spool Close first exhaust pipeline, II closes third gas exhaust piping for spool, and III be spool position is to adjust into engine aspirating system Second exhaust pipeline is closed with turbocharger turbine runner cycle gas amount, IV for spool.
A kind of engine integrated exhaust gas recirculation valve swing position schematic diagram of the preferred scheme of Fig. 3.Wherein I closed for spool First exhaust pipeline, II for spool close third gas exhaust piping, III be spool position be adjust enter engine aspirating system with Turbocharger turbine runner cycle gas amount, IV closes second exhaust pipeline for spool.
A kind of Fig. 4 axis of oscillation engine integrated exhaust gas recirculation valve swing position when being located at outside first exhaust tube outlet Schematic diagram.Wherein I first exhaust pipeline is closed for spool, II closes third gas exhaust piping for spool, and III be spool position is tune Section enters engine aspirating system and turbocharger turbine runner cycle gas amount, and IV closes second exhaust pipeline for spool.
In figure: 1- first exhaust pipeline;2- second exhaust pipeline;3- third gas exhaust piping;4- pipeline intersection;5- protrusion Contour structure A;Swinging track line at the top of 6- spool;At the top of 7- spool;8- axis of oscillation;9- spool bottom;10- boss;11- is convex Contour structure B out;12- spool swing angle;13- concave profile;14- protrudes contour structure C.
Specific embodiment
The utility model book technical solution is further explained and is illustrated in the form of specific embodiment below.This implementation Engine integrated exhaust gas recirculation valve in example can refer to the description of attached drawing 1~4.
A kind of engine integrated exhaust gas recirculation valve, including first exhaust pipeline 1, second exhaust pipeline 2, third exhaust pipe Road 3 and be adjustably controlled element composition;The first exhaust pipeline 1, second exhaust pipeline 2, the interconnection of 3 phase of third gas exhaust piping It connects and forms pipeline intersection 4;1 import of first exhaust pipeline is connected with one group of cylinder exhaust pipe of engine, outlet connecting pipe Road intersection 4;2 inlet connecting branch road intersection 4 of second exhaust pipeline, outlet are connected with EGR line;Third gas exhaust piping 3 into Mouth connecting line intersection 4, outlet is connected with the import of turbocharger turbine runner;Described in another arrangement Two gas exhaust pipings 2 are connected with turbocharger, and third gas exhaust piping 3 is connected with EGR line;Described is adjustably controlled element Positioned at pipeline intersection 4;Exporting side in first exhaust pipeline 1 and be adjustably controlled element contact area has protrusion profile knot Structure A5,2 entrance of second exhaust pipeline is with 1 opposite side of first exhaust pipeline and is adjustably controlled element contact area with protrusion Contour structure B11, the wall surface opposite with first exhaust pipeline 1 has concave between second exhaust pipeline 2 and third gas exhaust piping 3 Profile 13 cooperates with element is adjustably controlled;Described is adjustably controlled element and protrusion contour structure A5, protrusion contour structure B11 and concave profile 13, the first and second gas exhaust piping inner wall collective effect, can close first exhaust pipeline 1, make one group of gas The exhaust of cylinder can not flow to EGR line and turbocharger;Second exhaust pipeline 2 can also only be closed by being adjustably controlled element, be made The exhaust of one group of cylinder all flows to third gas exhaust piping 3;Third gas exhaust piping 3 can also only be closed by being adjustably controlled element, be made The exhaust of one group of cylinder all flows to second exhaust pipeline 2;Being adjustably controlled element can also be by adjusting swing angle control the The distribution for exhaust gas flow on second exhaust pipeline 2 and third gas exhaust piping 3 that one gas exhaust piping 1 flows into;It is characterized by: institute The element that is adjustably controlled stated is valve arrangement, and preferably butterfly valve, spool are laminated structure, around the flowing with respect to exhaust gas The axis of oscillation 8 of direction transverse direction can be swingingly arranged;The opposite first, second and third gas exhaust piping axis of the axis of oscillation 8 is vertical It is installed;The axis of oscillation 8 is located in 1 exit of first exhaust pipeline or pipeline intersectional region;
For the engine integrated exhaust gas recirculation valve there are four typical swing position, the Ith swing position is spool closing the One gas exhaust piping 1, spool top 7 and 1 left side wall face contact of first exhaust pipeline, the spool bottom 9 have protrusion arc knot Structure closes second exhaust pipeline 2 and the with 13 collective effect of concave profile between second exhaust pipeline 2 and third gas exhaust piping 3 Exhaust flowing between three gas exhaust pipings 3, spool bottom 9 is around axis of oscillation 8 in second exhaust pipeline 2 and third gas exhaust piping It is swung between 3;Arcuate structure is protruded in the spool bottom 9 has boss with 2 wall surface opposite position of second exhaust pipeline 10, when spool closes first exhaust pipeline 1,2 import inner wall of second exhaust pipeline and the contact sealing of boss 10.At this moment with hair One group of cylinder exhaust that motivation first exhaust pipeline 1 is connected is closed, aobvious so as to cause this group of cylinder cylinder exhaust back pressure It writes and increases, reaching makes engine retard, achievees the purpose that lower speed.When engine operates in middle small load condition, exhaust When reason DPF device needs to improve delivery temperature regeneration out afterwards, first exhaust pipeline 1 can be closed with spool, adjustment internal combustion oil of cylinder sprays Developing Tactics are penetrated, are stopped to this group of cylinder injection fuel oil, more fuel oils spray to other cylinders without closing exhaust.In this way Even can also utilize the integrated exhaust gas recirculation valve under lower load, relatively hot exhaust is inputted into the exhaust After-treatment device.Therefore, even the exhaust gas post-treatment device can still reach in the case of the engine load is lower Especially adequately conversion or processing are carried out to the harmful substance for including in exhaust to its initiation temperature, and under the conditions of the temperature. Exhaust gas post-treatment device DPF (particulate filter) can regenerate the particulate filter by improving delivery temperature.
Spool will be rotated clockwise under the driving of control mechanism, the spool top 7 and protrusion profile knot Structure A5 cooperation is protruded 7 mating areas at the top of contour structure and spool and is adapted with swinging track line 6 at the top of spool, at the top of spool 7 swing around axis of oscillation 8 in 1 exit of first exhaust pipeline, and axis of oscillation 8 may be alternatively located at first exhaust pipeline 1 and export outside The position of certain distance.In spool swing process, when spool top is also in protrusion contour structure A5 mating area, first exhaust Engine exhaust in pipeline 1 will not flow to third gas exhaust piping 3 from the top of spool 7.It is described when Spool rotating angle is smaller Arcuate structure is protruded for the edge collective effect with protrusion contour structure B11 in spool bottom 9, and exhaust will not be from second exhaust pipe Road 2 flows to third gas exhaust piping 3;Rotating the larger rear spool bottom 9 has protrusion arcuate structure with second exhaust pipeline 2 Concave profile 13 is by collective effect between third gas exhaust piping 3, and exhaust gas will not flow to third exhaust in second exhaust pipeline 3 Pipeline 2.At the top of spool 7 rotate to the protrusion rightmost side contour structure A5 from 1 left side wall surface of first exhaust pipeline during, one group of gas The exhaust of cylinder all flows to second exhaust pipeline 2 i.e. EGR line, this may be implemented no matter any operating condition of engine have it is higher EGR rate.7 rotate to the protrusion rightmost side contour structure A5 at the top of spool, are at this moment adjustably controlled element and only close third exhaust Pipeline 3, makes the exhaust of one group of cylinder all flow to second exhaust pipeline 2, and spool work is realized maximum in the IIth swing position EGR rate.It is greater than rotation half of the spool bottom 9 around axis of oscillation 8 around the radius of turn of axis of oscillation 8 at the top of the spool Diameter;The arc length that the arc length that then spool top is swung will be swung less than spool bottom 9 swings the feelings of smaller angle in spool Under condition, exhaust gas just has enough circulation areas when flowing to second exhaust pipeline 2 from first exhaust pipeline 1.
When spool is swung between the protrusion rightmost side contour structure A5 and 1 right side wall surface of first exhaust pipeline, spool work Make in the IVth swing position, the exhaust gas that control first exhaust pipeline 1 is flowed into is in second exhaust pipeline 2 and third gas exhaust piping 3 The distribution of upper flow, to realize the different EGR rate of engine.
When spool continues to rotate, 7 and with after 1 right side wall face contact of first exhaust pipeline at the top of spool, spool will close the Two gas exhaust pipings 2, make one group of cylinder exhaust all flow to the i.e. turbocharger turbine runner of third gas exhaust piping 3 into Mouthful, spool works in the IIIth swing position, at this moment will not have waste gas flow direction EGR line, the EGR rate in air inlet will be zero.
Protrusion profile is respectively equipped at 8 relative wall of downtake pipe exit and axis of oscillation described in preferred scheme Structure A5, protrusion contour structure C14, at the top of spool 7 respectively with 1 side wall surface of first exhaust pipeline and protrusion contour structure A5, Contour structure C14 cooperation is protruded, spool will protrude mating surface on the outside of contour structure A5 pipeline wall surface and protrusion contour structure C14 Between swing, spool swing angle 12 is smaller.

Claims (5)

1. a kind of engine integrated exhaust gas recirculation valve, which is characterized in that the recycle valve includes first exhaust pipeline (1), the Two gas exhaust pipings (2), third gas exhaust piping (3) and be adjustably controlled element composition;The first exhaust pipeline (1), second row Air pipe (2), third gas exhaust piping (3) have been interconnected to form pipeline intersection (4);(1) import of first exhaust pipeline and hair One group of cylinder exhaust pipe of motivation is connected, outlet connecting pipe road intersection (4);It hands on second exhaust pipeline (2) inlet connecting branch road At remittance (4), outlet is connected with EGR line;Third gas exhaust piping (3) inlet connecting branch road intersection (4), outlet and turbocharging The import of device turbine runner connects;The element that is adjustably controlled is located at pipeline intersection (4);In first exhaust pipeline (1) outlet side has protrusion contour structure A (5) with element contact area is adjustably controlled, and second exhaust pipeline (2) entrance is same First exhaust pipeline (1) opposite side has protrusion contour structure B (11), second exhaust with element contact area is adjustably controlled The wall surface opposite with first exhaust pipeline (1) has concave profile (13) with adjustable between pipeline (2) and third gas exhaust piping (3) Save control element cooperation;The element that is adjustably controlled is valve arrangement, around the swing of the flow direction transverse direction of opposite exhaust gas Axis can be swingingly arranged;The axis of oscillation is vented with respect to first exhaust pipeline (1), second exhaust pipeline (2) and third The axis of pipeline (3) is vertically installed;Be adjustably controlled element crests can with protrusion contour structure A (5) cooperatively form it is close Seal structure is adjustably controlled component base and is equipped with protrusion arcuate structure, has with second exhaust pipeline (2) wall surface opposite position Boss (10), when spool closes first exhaust pipeline (1), second exhaust pipeline (2) import inner wall and boss (10) contact Sealing;
It is described be adjustably controlled element by with protrusion contour structure A (5), protrusion contour structure B (11) and concave profile (13) and the inner wall collective effect of first exhaust pipeline (1) and second exhaust pipeline (2), by being adjustably controlled element Swing, following four state can be formed:
(1), first exhaust pipeline (1) can be closed, makes the exhaust of one group of cylinder that can not flow to EGR line and turbocharger;
(2), it is adjustably controlled element and only closes second exhaust pipeline (2), the exhaust of one group of cylinder is made all to flow to third exhaust Pipeline (3);
(3), it is adjustably controlled element and only closes third gas exhaust piping (3), the exhaust of one group of cylinder is made all to flow to second exhaust Pipeline (2);
(4), element is adjustably controlled by adjusting the exhaust gas of swing angle control first exhaust pipeline (1) inflow in second exhaust The distribution of flow on pipeline (2) and third gas exhaust piping (3).
2. engine integrated exhaust gas recirculation valve according to claim 1, which is characterized in that described is adjustably controlled member Part is butterfly valve, and spool is laminated structure;At the top of the spool (7) respectively with first exhaust pipeline two side walls and protrusion profile Structure A cooperation, spool top are swung at first exhaust tube outlet around axis of oscillation.
3. engine integrated exhaust gas recirculation valve according to claim 2, which is characterized in that surrounded at the top of the spool The radius of turn of axis of oscillation is greater than the radius of turn that spool bottom surrounds axis of oscillation.
4. engine integrated exhaust gas recirculation valve according to claim 1, which is characterized in that the axis of oscillation is located at At first exhaust tube outlet or in pipeline intersectional region.
5. engine integrated exhaust gas recirculation valve according to claim 1, which is characterized in that the downtake pipe goes out Protrusion contour structure A (5), protrusion contour structure C (14), spool top part are respectively equipped at mouthful and at axis of oscillation relative wall Other and first exhaust pipeline one side wall face and protrusion contour structure A (5) and protrusion contour structure C (14) cooperation, spool will be convex It is swung between contour structure A (5) pipeline wall surface and protrusion contour structure C (14) outside mating surface out.
CN201822029410.5U 2018-12-05 2018-12-05 A kind of engine integrated exhaust gas recirculation valve Withdrawn - After Issue CN209510483U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109653907A (en) * 2018-12-05 2019-04-19 汽解放汽车有限公司 A kind of engine integrated exhaust gas recirculation valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109653907A (en) * 2018-12-05 2019-04-19 汽解放汽车有限公司 A kind of engine integrated exhaust gas recirculation valve
CN109653907B (en) * 2018-12-05 2023-11-21 一汽解放汽车有限公司 Integrated exhaust gas recirculation valve of engine

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