CN201925050U - Low-emission exhaust gas recirculation system - Google Patents
Low-emission exhaust gas recirculation system Download PDFInfo
- Publication number
- CN201925050U CN201925050U CN2010205937662U CN201020593766U CN201925050U CN 201925050 U CN201925050 U CN 201925050U CN 2010205937662 U CN2010205937662 U CN 2010205937662U CN 201020593766 U CN201020593766 U CN 201020593766U CN 201925050 U CN201925050 U CN 201925050U
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- China
- Prior art keywords
- control valve
- cooler
- exhaust
- gas recirculation
- emission
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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 discloses a low-emission exhaust gas recirculation system. In structure, an exhaust manifold is connected to a booster and an exhaust branch pipe in parallel; the exhaust branch pipe is orderly and serially connected to a cooler, a control valve and a one-way control valve and subsequently merged into an air inlet manifold; and the fresh air is entered into the air inlet manifold via a turbine blower and an air intercooler. The cooler is arranged on the back end of a diesel engine cylinder after directly connecting to the control valve. The one-way control valve is connected to the front end interface of the air inlet manifold, the lower end of left side of the cooler is connected to a water inlet pipe, and the upper end of right side is connected to a water outlet pipe. The low-emission exhaust gas recirculation system provided by the utility model has the advantages that the structure is compact, the low-emission exhaust gas recirculation system can be matched with an oil supplying system and an air inlet system well, the exhaust is infused into the cooler after partially extracting by the exhaust pipe, the density of inlet air is increased by reducing temperature, the exhaust is timely and properly infused into the air inlet manifold to subject to secondary combustion by means of the control valve, the one-way control valve and a whole vehicle electronic control system, the emission of tail gas is reduced, and the purpose of emission reduction is carried out.
Description
Technical field
The utility model belongs to the diesel engine structure technology, is specifically related to a kind of diesel engine waste gas recycling system of low emission.
Background technique
Vehicle diesel engine has adopted many methods in order to reduce discharging at present, such as adopting worm wheel pressure booster to improve the pressure of gas in the engine air inlet tube; Adopt the air inlet interstage cooler, increase gas density etc. in order to reduce intake temperature.The subject matter that the said structure configuration is brought is to improve the complexity that engine charge mechanism will increase system, the complexity that connecting pipeline also can become.Increase parts in addition motor boundary dimension is strengthened, can original vehicle assemble has just become realistic problem down, also causes the inconvenience in the maintenance simultaneously.Yet should keep engine power, economic index, guarantee again to satisfy emission regulation demands, just must look for another way.The present utility model has proposed the cooling system for recycled exhaust gas of a kind of compact structure, low emission, and this system stability is reliable, and it is very little to take up room, and is convenient to the layout on car load.
Summary of the invention
The purpose of this utility model is to have proposed a kind of gas recirculation system that can effectively reduce emission standard.
Below in conjunction with accompanying drawing theory structure of the present utility model is described.The gas recirculation system of low emission has pressurized machine, turbosupercharger, cooler, control valve, one-way control valve, suction tude, air intercooler, outlet pipe and exhaust branch pipe etc.Structurally, exhaust manifold also is connected with pressurized machine and exhaust branch pipe, and exhaust branch pipe is incorporated the intake manifold into after being connected in series cooler, control valve and one-way control valve successively.Fresh air enters intake manifold (Fig. 1) through turbosupercharger, air intercooler.The principle of reduced exhaust is, draw a part of waste gas by outlet pipe and enter cooler, increase the density of air inlet gas by reducing temperature, through control valve and one-way control valve and car load automatical control system (ECU), in good time, an amount of intake manifold that enters of control waste gas carries out secondary combustion.Enter the suction tude burning once more by the part that will discharge tail gas, lower the tail gas total release, thereby reach the purpose that reduces discharging.
Characteristics of the present utility model and beneficial effect are, (1) the utility model compact structure, can be good at cooperating oil supply system and gas handling system, reasonably control air inlet, organize fully mixing and burning of fuel and air in the cylinder, make burning more abundant, improve the power character of diesel engine and reduce discharging.(2) on small construction, make diesel engine reach the above emission standard of state IV, improved discharge control level, have good economic and social benefit.(3) on physical dimension, kept the volume of original motor, the motor installing space is not changed.
Description of drawings
Fig. 1 is the utility model structural principle sketch.
Fig. 2 is the example structure sketch.
Embodiment
Below in conjunction with drawings and Examples structure of the present utility model is further described.The gas recirculation system of low emission, the exhaust manifold 2 of diesel engine 1 also is connected with pressurized machine 3 and exhaust branch pipe 4, and exhaust branch pipe 4 is incorporated intake manifold 8 into after being connected in series cooler 5, control valve 6 and one-way control valve 7 successively.Fresh air enters intake manifold 8 (as Fig. 1) through turbosupercharger 9, air intercooler 10.Cooler 5 and the rear end that is installed on diesel engine 1 cylinder cap after control valve 6 directly is connected, lower end, cooler left side is connected to intake pipe 11; Upper end, cooler right side is connected to outlet pipe 12.One-way control valve 7 is installed on intake manifold's 8 front end interfaces.Cooler 5 is fixed in the body surface (as Fig. 2) of diesel engine 1 by support 13.
Fresh air enters the firing chamber of diesel engine from turbosupercharger, air intercooler and intake manifold, meanwhile a part of waste gas also enters into the intake manifold via cooler, control valve and one-way control valve, mix together to enter the firing chamber with fresh air, make a part of waste gas obtain secondary combustion.The effect of one-way control valve is, because the gas pressure in the air inlet and exhaust piper is in pulse state in the work of motor, when taking over the pressure of import greater than exhaust gas recirculation, intake manifold's pressure can produce " refluence " phenomenon, increase exhaust back pressure that can be extra can bring unfavorable factor to engine operating condition.Because the effect of one-way control valve when intake manifold's pressure is taken over the pressure of import greater than exhaust gas recirculation, will be closed exhaust gas recirculation and take over import, avoids the generation of " refluence " phenomenon.The cooling water of cooler draws water pump from body through intake pipe, and backwater is directly introduced cooling water tank through outlet pipe.This structure has not only improved cooling effectiveness, can make the less cooler of volume, satisfies the requirement of exhaust gas recirculation.The support of cooler is fixed in the body surface below the diesel engine cylinder cover, rather than is fixed on the cylinder cap, has so both reduced the conduction of heat, makes compact structure, stable again.The utility model is applied to the CY4A serial diesel engine, makes the complete machine exhaust index meet and exceed the state IV standards requirement.
The utility model is used on CY4A82-CE4 state four discharging types, and its performance is through verification experimental verification, leading indicator such as following table.Exhaust index shows that this type has reached below the limit value requirement, and leaves certain surplus when producing in batches.
Claims (3)
1. the gas recirculation system of low emission, have pressurized machine, turbosupercharger, cooler, control valve, one-way control valve, suction tude, air intercooler, outlet pipe and exhaust branch pipe, it is characterized in that the exhaust manifold (2) of diesel engine (1) and be connected with pressurized machine (3) and exhaust branch pipe (4), exhaust branch pipe (4) is incorporated intake manifold (8) into after being connected in series cooler (5), control valve (6) and one-way control valve (7) successively, and fresh air enters intake manifold (8) through turbosupercharger (9), air intercooler (10).
2. according to the gas recirculation system of the described low emission of claim 1, be installed on the rear end of described diesel engine (1) cylinder cap after it is characterized in that described cooler (5) and control valve (6) directly being connected, lower end, cooler left side is connected to intake pipe (11); Upper end, cooler right side is connected to outlet pipe (12), and described one-way control valve (7) is installed on intake manifold (8) front end interface.
3. according to the gas recirculation system of claim 1 or 2 described low emissions, it is characterized in that described cooler (5) is fixed in the body surface of described diesel engine (1) by support (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205937662U CN201925050U (en) | 2010-11-05 | 2010-11-05 | Low-emission exhaust gas recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205937662U CN201925050U (en) | 2010-11-05 | 2010-11-05 | Low-emission exhaust gas recirculation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925050U true CN201925050U (en) | 2011-08-10 |
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ID=44428903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205937662U Expired - Lifetime CN201925050U (en) | 2010-11-05 | 2010-11-05 | Low-emission exhaust gas recirculation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751154A (en) * | 2018-12-05 | 2019-05-14 | 一汽解放汽车有限公司 | A kind of gas engine gas recirculation system |
-
2010
- 2010-11-05 CN CN2010205937662U patent/CN201925050U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751154A (en) * | 2018-12-05 | 2019-05-14 | 一汽解放汽车有限公司 | A kind of gas engine gas recirculation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG CHAOYANG DIESEL ENGINE POWER LIMITED Free format text: FORMER OWNER: DONGFENG CHAOYANG DIESEL ENGINE CO., LTD. Effective date: 20120331 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120331 Address after: 122000 the Yellow River Road, Liaoning, No. 3, No. 51, No. Patentee after: Dongfeng Chaoyang Chaochai Power Co., Ltd. Address before: 122000 the Yellow River Road, Liaoning, No. 3, No. 51, No. Patentee before: Dongfeng Chaoyang Diesel Engine Co., Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low-emission exhaust gas recirculation system Effective date of registration: 20190612 Granted publication date: 20110810 Pledgee: Lingyuan steel enterprise limited liability company Pledgor: Dongfeng Chaoyang Chaochai Power Co., Ltd. Registration number: 2019210000021 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |
|
| CX01 | Expiry of patent term |