CN205013157U - Engine exhaust recirculation system - Google Patents
Engine exhaust recirculation system Download PDFInfo
- Publication number
- CN205013157U CN205013157U CN201520747740.1U CN201520747740U CN205013157U CN 205013157 U CN205013157 U CN 205013157U CN 201520747740 U CN201520747740 U CN 201520747740U CN 205013157 U CN205013157 U CN 205013157U
- Authority
- CN
- China
- Prior art keywords
- exhaust
- egr
- cooler
- back pressure
- pressure control
- 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
Links
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model provides an engine exhaust recirculation system, including EGR valve (5), cooler (4), exhaust connection (3) and exhaust manifold (2), exhaust connection (3) are connected with engine exhaust manifold (2) and cooler (4), the outlet duct of cooler (4) with the air inlet of EGR valve (5) is connected, installs exhaust back pressure control valve (1) before exhaust manifold (2) back silencer export additional. Through adding exhaust back pressure control valve (1) thus can be when the exhaust backpressure be less increase exhaust backpressure increase EGR and rate, more effective realization EGR energy saving and emission reduction's utility.
Description
Technical field
The utility model belongs to technical field of engines, is specifically related to engine exhaust recirculating system.
Background technique
Country is more and more stricter to the laws and regulations requirement of car load discharge in recent years, and relevant emission standards rises year by year.EGR technology also will be promoted gradually.A part for Exhaust Gas is isolated for automobile compact internal combustion engine and is imported the technology that air inlet side makes it burn once again by exhaust gas recirculatioon (ExhaustGasRecirculation) after combustion.Main purpose can improve rate of fuel consumption rate for the nitrogen oxide (NOx) reduced in Exhaust Gas with when sharing sub load.The most responsive region of naturally aspirated engine pinking is often at the large load area of low speed (as shown in Figure 2), the effect of pinking is suppressed in order to study outer exhaust, need certain EGR rate, and intake and exhaust pressure reduction is less under this operating mode, even if EGR valve aperture is adjusted to maximum, also cannot introduce more exhausts and enter intake manifold, the EGR rate that cannot satisfy the demands.
And existing EGR vent systems often by valve body and EGR pipe road integrated, cause overall structure comparatively complicated, comparatively difficult to the higher layout of spatial requirement.And generally also EGR valve interface has been reserved on cylinder cap for motor newly developed, without the need to introducing waste gas or cooling from exhaust rear end, therefore exigence one can be less to spatial requirement, independent of EGR exhaust pipe, and exhaust back pressure can be regulated at motor at each operating point, regulate the exhaust gas recycling system of EGR rate.
Model utility content
For the deficiency that existing exhaust gas recycling system exists, the engine exhaust recirculating system that the utility model provides a kind of more performance more to optimize.
In order to realize the utility model object, its technological scheme is as follows:
A kind of engine exhaust recirculating system, comprises exhaust back pressure control valve, gas exhaust manifold, exhaust connection, cooler, EGR valve.Described exhaust back pressure control valve is connected by flange before being arranged on the outlet of exhaust headers rear muffler, uses metallic gasket sealing.Described gas exhaust manifold front end arm is connected with exhaust connection import, and the outlet of described exhaust connection is connected with the suction port of described cooler, and the air outlet of described cooler is connected with the suction port of described EGR valve.
The beneficial effects of the utility model are: by installing exhaust back pressure control valve additional before the outlet of gas exhaust manifold rear muffler, when motor runs, exhaust back pressure can be increased when exhaust back pressure is less thus strengthen EGR rate, the more effective effectiveness realizing EGR energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the utility model engine exhaust recirculating system structural representation;
Fig. 2 be motor under different rotating speeds, the relation of intake manifold and exhaust manifold pressure;
In figure: 1. exhaust back pressure control valve, 2. gas exhaust manifold, 3. exhaust connection, 4. cooler, 5.EGR valve.
Embodiment
With reference to accompanying drawing is existing, the utility model is described further.
See Fig. 1, this exhaust gas recycling system comprises exhaust back pressure control valve 1, gas exhaust manifold 2, exhaust connection 3, cooler 4, EGR valve 5.Described exhaust back pressure control valve 1 is connected with gas exhaust manifold 2, and before muffler outlet, the outlet of described exhaust connection 3 is connected with the suction port of described cooler 4, and the steam outlet pipe of described cooler 4 is connected with the suction port of described EGR valve 5.
The utility model by installing exhaust back pressure control valve 1 additional before the outlet of gas exhaust manifold 2 rear muffler, when motor runs, PWM duty cycle control signal is exported by ECU, direct current generator in valve body is driven to rotate and remain on a certain angle, motor bearings is connected with valve block, thus realizes the control of valve body valve block aperture.When motor is in the large load area of low speed (as shown in Figure 2), because intake and exhaust pressure reduction is less, will cannot be more vented introducing intake manifold, affects egr system effect.At this moment according to matched data in early stage, by ECU, corresponding PWM duty cycle signals is exported to exhaust back pressure control valve 1, drive direct current generator to rotate and regulate exhaust back pressure control valve 1 aperture, increase exhaust back pressure, intake and exhaust pressure reduction is increased, thus will more be vented introducing intake manifold.Thus can realize higher EGR rate at the large load area of low speed (as shown in Figure 2), meet the demand of exhaust gas recycling system to EGR rate, improve engine performance.
Claims (1)
1. an engine exhaust recirculating system, comprises EGR valve (5), cooler (4), exhaust connection (3) and gas exhaust manifold (2); Described exhaust connection (3) is connected with enmgine exhaust (2) and cooler (4), and the steam outlet pipe of described cooler (4) is connected with the suction port of described EGR valve (5); It is characterized in that, before the outlet of gas exhaust manifold (2) rear muffler, install exhaust back pressure control valve (1) additional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520747740.1U CN205013157U (en) | 2015-09-25 | 2015-09-25 | Engine exhaust recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520747740.1U CN205013157U (en) | 2015-09-25 | 2015-09-25 | Engine exhaust recirculation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013157U true CN205013157U (en) | 2016-02-03 |
Family
ID=55211766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520747740.1U Expired - Fee Related CN205013157U (en) | 2015-09-25 | 2015-09-25 | Engine exhaust recirculation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645105A (en) * | 2019-09-11 | 2020-01-03 | 奇瑞汽车股份有限公司 | Engine |
-
2015
- 2015-09-25 CN CN201520747740.1U patent/CN205013157U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645105A (en) * | 2019-09-11 | 2020-01-03 | 奇瑞汽车股份有限公司 | Engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105673543A (en) | Control method for preventing turbocharger surges | |
| CN103644024A (en) | Automobile engine intake air temperature regulation system | |
| CN202125377U (en) | EGR (Exhaust Gas Recircualtion) system of diesel engine | |
| CN103615309A (en) | All-work-condition adjustable two-stage pressurizing system of internal combustion engine | |
| CN105134418A (en) | Engine with high-pressure exhaust gas recirculation (EGR) device and control method for high-pressure EGR device | |
| CN203742841U (en) | ERG system of engine | |
| CN102434268A (en) | Double-turbine double-air-compressor turbocharging system | |
| CN204783248U (en) | Automobile -used diesel engine of low compression ratio | |
| CN101344033B (en) | Transmission shaft and shaft sleeve of anti-air leakage turbosupercharger bypass valve | |
| CN102226425A (en) | Pneumatic internal combustion hybrid engine | |
| CN205013157U (en) | Engine exhaust recirculation system | |
| CN201062538Y (en) | Propeller shaft and tube for leak-proof turbocharger bypass valve | |
| CN102797595A (en) | Exhaust gas recirculation (EGR) system for diesel engine | |
| GB2480240A (en) | Turbocharged diesel engine with long-route EGR and an auxiliary intake compressor | |
| CN201125796Y (en) | Diesel engine cylinder cover | |
| CN105508035A (en) | Supercharged diesel engine multi-mode switch supercharging structure and method | |
| CN205013119U (en) | Turbocharged device, turbocharged engine and car | |
| CN203476537U (en) | Loop-adjustable exhaust gas recirculation system | |
| CN209976613U (en) | Heat dissipation system for heavy commercial vehicle | |
| CN204627799U (en) | EGR cooling structure | |
| CN103953478B (en) | Dual pathways super charge pipe | |
| CN202100326U (en) | Pneumatic internal combustion hybrid engine | |
| CN202073668U (en) | Air-breathing supercharger of automobile engine | |
| CN203081570U (en) | Pressurized diesel engine pressurizing system | |
| CN103912420B (en) | Double-tube structure super charge pipe |
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: 20160203 Termination date: 20210925 |