CN201891528U - Engine waste gas recirculating system - Google Patents
Engine waste gas recirculating system Download PDFInfo
- Publication number
- CN201891528U CN201891528U CN201020274303XU CN201020274303U CN201891528U CN 201891528 U CN201891528 U CN 201891528U CN 201020274303X U CN201020274303X U CN 201020274303XU CN 201020274303 U CN201020274303 U CN 201020274303U CN 201891528 U CN201891528 U CN 201891528U
- Authority
- CN
- China
- Prior art keywords
- waste gas
- gas
- cooler
- egr valve
- manifold
- 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.)
- Expired - Fee Related
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- 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
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model relates to an engine waste gas recirculating system, comprising a waste gas cooler and an EGR (exhaust gas recirculation) valve, a gas inlet of the waste gas cooler is connected with an engine exhaust manifold through a cooler gas inlet pipe, a gas exhaust port of the waste gas cooler is connected with a gas inlet of the EGR valve through a thin-wall stainless steel tube, the EGR valve is fixed on an engine inlet manifold, a gas outlet of the EGR valve is communicated with the inner cavity of the inlet manifold through a waste gas channel on the inlet manifold, the waste gas channel is arranged on a waste gas outlet on the inner wall of the inlet manifold and is adjacent to a throttle valve, and is arranged at the center of the top part or the bottom part of a fresh air flow passage. In the utility model, waste gas can enter all cylinders and is fully mixed with fresh air, and the used waste gas pipeline is the shortest, so as to save the space in an engine room to the maximum extent.
Description
Technical field
The utility model relates to the gas recirculation system of a kind of supercharging gasoline engine, diesel engine, belongs to technical field of engines.
Background technique
Along with the harshness day by day of emission standard, egr system (gas recirculation system) is widely used on the diesel engine.EGR is that the part waste gas of will discharge from motor causes by pipeline the gas handling system of motor, mix with fresh air, again with mixed gas delivery to cylinder.
EGR can reduce the NOX discharging of diesel engine, its former because:
A. contain a large amount of CO in the waste gas
2, H
2O, N
2Deng near inert gasses, when these waste gas partial reflux after suction tude, play the effect of dilution fresh air, rate of burning is slowed down;
B. water vapour that contains in the waste gas and carbon dioxide etc. are the sub-molecular gas of ternary, and specific heat capacity is big, can reduce the maximum temperature that cylinder combustion is burnt effectively;
C. waste gas can also make the relative concentration of oxygen descend to the diluting effect of fresh air, reduces the NOX discharging that causes because of oxygen-enriched combusting.
Gas recirculation system comprise be used for waste gas from gas exhaust manifold be directed to intake manifold pipeline, be used to control the EGR valve that EGR leads, a plurality of parts such as cooler for recycled exhaust gas that are used to cool off EGR gas.In the gas recirculation system of available engine, because these position component are unreasonable, when waste gas is introduced intake manifold, it is inhomogeneous to cause EGR waste gas to mix with fresh air easily, the local overrich or rare excessively of waste gas, cause waste gas can not be evenly distributed to each cylinder, this has influenced the performance of EGR to a certain extent.In addition, because existing gas recirculation system layout is unreasonable, also increased the shared space of system.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of can be evenly distributed to waste gas in each cylinder and the little engine exhaust-gas recirculating system that takes up room.
The alleged problem of the utility model realizes with following technical proposals:
A kind of engine exhaust-gas recirculating system, comprise gaseous effluent and EGR valve in the formation, the suction port of described gaseous effluent is through making but device suction tude sending and receiving engine exhaust manifold, relief opening connects the suction port of EGR valve through thin-wall stainless steel, described EGR valve is fixed on the intake manifold of motor, the exhaust steam passage of its air outlet on intake manifold is communicated with the intake manifold inner chamber, and it is adjacent with the closure interface and be positioned at the top or the bottom centre of fresh air air-flow path that described exhaust steam passage is positioned at waste gas outlet on the intake manifold inwall.
Above-mentioned engine exhaust-gas recirculating system, the 4th cylinder outlet of described cooler suction tude sending and receiving engine exhaust manifold.
The utility model is arranged on the top or the bottom centre of fresh air air-flow path with the waste gas outlet on the intake manifold inwall, because the cylinder of motor is transversely arranged, this has just increased waste gas and has entered each cylinder chance conformity.Simultaneously, waste gas outlet as far as possible away from the suction port of cylinder, guarantees that waste gas fully mixes before entering cylinder with fresh air near the closure interface.In addition, arrangement of the present utility model makes exhaust pipe the shortest, has saved the space in the cabin to greatest extent.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the right elevation of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Each label is among the figure:
1, cylinder cap; 2, cooler suction tude; 3, gaseous effluent; 4, thin-wall stainless steel; 5, EGR valve; 6, gas exhaust manifold; 7, gas exhaust manifold the 4th cylinder outlet, 8, intake manifold; 9, closure; 10, exhaust steam passage; 11, waste gas outlet.
Embodiment
The purpose of this utility model is a kind of system or device of realizing engine exhaust gas recirculation of design, changing the inhomogeneous present situation of EGR waste gas and air mixing simultaneously, also can make system pipeline have minimum length, motor integral body is more compact, and it is littler to occupy the space.
Referring to Fig. 1～Fig. 3, that egr system adopts is automatically controlled, high pressure, cold junction layout pattern.Cooler 3 is fixed on cylinder cap 1 rear end, cooler suction tude 2 one ends connect gas exhaust manifold 6 the 4th cylinder outlet 7, one end is connected with cooler 3, engine section waste gas enters cooler 3, by thin-wall stainless steel 4 cooled waste gas is guided to EGR valve 5 again, and EGR valve 5 is fixed on the intake manifold 8, and after cooled exhaust air was guided to closure 9 on the intake manifold by the exhaust steam passage on the intake manifold 8 10, waste gas entered intake manifold 8.
EGR in the utility model is the english abbreviation (Exhaust Gas Recirculation) of exhaust gas recirculatioon.
Claims (2)
1. engine exhaust-gas recirculating system, it is characterized in that, it comprises gaseous effluent (3) and EGR valve (5), the suction port of described gaseous effluent (3) is through cooler suction tude (2) sending and receiving engine exhaust manifold (6), relief opening connects the suction port of EGR valve (5) through thin-wall stainless steel (4), described EGR valve (5) is fixed on the intake manifold (8) of motor, the exhaust steam passage (10) of its air outlet on intake manifold (8) is communicated with intake manifold (8) inner chamber, and it is adjacent with the closure interface and be positioned at the top or the bottom centre of fresh air air-flow path that described exhaust steam passage (10) is positioned at waste gas outlet (11) on intake manifold (8) inwall.
2. according to the described engine exhaust-gas recirculating system of claim 1, it is characterized in that the 4th cylinder outlet (7) of described cooler suction tude (2) sending and receiving engine exhaust manifold (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020274303XU CN201891528U (en) | 2010-07-29 | 2010-07-29 | Engine waste gas recirculating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020274303XU CN201891528U (en) | 2010-07-29 | 2010-07-29 | Engine waste gas recirculating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891528U true CN201891528U (en) | 2011-07-06 |
Family
ID=44221002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020274303XU Expired - Fee Related CN201891528U (en) | 2010-07-29 | 2010-07-29 | Engine waste gas recirculating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891528U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536547A (en) * | 2012-02-21 | 2012-07-04 | 重庆长安汽车股份有限公司 | Engine intake manifold with exhaust gas recirculation (EGR) exhaust gas distribution structure |
| CN108397313A (en) * | 2018-03-21 | 2018-08-14 | 重庆长安汽车股份有限公司 | A kind of natural aspiration gasoline engine egr system and engine |
| CN113389663A (en) * | 2021-08-05 | 2021-09-14 | 重庆鑫源动力制造有限公司 | EGR pipeline system for engine |
-
2010
- 2010-07-29 CN CN201020274303XU patent/CN201891528U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536547A (en) * | 2012-02-21 | 2012-07-04 | 重庆长安汽车股份有限公司 | Engine intake manifold with exhaust gas recirculation (EGR) exhaust gas distribution structure |
| CN102536547B (en) * | 2012-02-21 | 2015-12-09 | 重庆长安汽车股份有限公司 | A kind of engine intake manifold with EGR waste gas distribution structure |
| CN108397313A (en) * | 2018-03-21 | 2018-08-14 | 重庆长安汽车股份有限公司 | A kind of natural aspiration gasoline engine egr system and engine |
| CN113389663A (en) * | 2021-08-05 | 2021-09-14 | 重庆鑫源动力制造有限公司 | EGR pipeline system for engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20180729 |