CN203296966U - Separate EGR (exhaust gas recirculation) system of diesel engine - Google Patents
Separate EGR (exhaust gas recirculation) system of diesel engine Download PDFInfo
- Publication number
- CN203296966U CN203296966U CN2013202238602U CN201320223860U CN203296966U CN 203296966 U CN203296966 U CN 203296966U CN 2013202238602 U CN2013202238602 U CN 2013202238602U CN 201320223860 U CN201320223860 U CN 201320223860U CN 203296966 U CN203296966 U CN 203296966U
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- China
- Prior art keywords
- outlet pipe
- cooler
- exhaust gas
- egr
- egr valve
- Prior art date
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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
Abstract
The utility model discloses a separate EGR (exhaust gas recirculation) system of a diesel engine. The separate EGR system is structurally characterized in that an exhaust pipe, an EGR cooler gas inlet pipe, an EGR cooler, an EGR cooler gas outlet pipe, an EGR valve gas outlet pipe, a gas inlet connection pipe and a gas inlet pipe are connected sequentially. The EGR cooler is arranged on the back side of the engine; the other components which are connected with the EGR cooler are arranged on the left and right sides of the engine. The EGR valve gas outlet pipe is provided with a three-way connector which is respectively connected with the EGR cooler gas outlet pipe, the gas inlet connection pipe and an EGR valve, and the EGR valve controls the gas inlet flow rate of the gas inlet pipe. The system is compact in structure, the gas inlet pipeline of the diesel engine does not need to be changed greatly, an EGR system is reasonably arranged based on the original diesel engine model, the cost is low, the national IV emission standard can be met, and the emission control level can be improved. Operation shows that the system has good economic and social benefits, and the space design requirements of a whole vehicle can be met.
Description
Technical field
The utility model belongs to engine components, is specifically related to a kind of diesel engine waste gas recycling system device.
Background technique
To the improving constantly of environmental protection attention degree, China is also increasingly strict to the standard of automotive emission along with countries in the world, and this just impels the control technique of engine exhaust emission to constantly update.EGR (hereinafter to be referred as EGR) technology is the important technology behave that diesel engines at present is controlled discharging.The principle of EGR is by after a part of exhaust cooling, introduces suction tude and mixes with fresh air, and then enter cylinder combustion, with this, reaches and reduces maximum combustion temperature inhibition NO in cylinder
XThe purpose that generates.
Present most of diesel engine EGR system is all directly from air outlet flue or catalyst converter, taking out waste gas, directly to enter intake manifold, it is larger that the set-up mode of this egr system exhaust passage takies the motor peripheral space, and the arrangement of exhaust passage also is unfavorable for cooling.The diesel engine waste gas recycling system that the utility model proposes accordingly, by changing set-up mode, when saving manufacture cost, reach the purpose that reduces delivery temperature, controls exhaust emissions.
Summary of the invention
The purpose of this utility model is, a kind of exhaust gas recirculation system device that exhaust passage is arranged on to the motor both sides is provided, and reaches compact structure, reduces delivery temperature, guarantees exhaust emissions purpose up to standard.
Below in conjunction with accompanying drawing, structural principle of the present utility model is described.
Diesel engine march-past gas recirculation system, comprise outlet pipe, cooler for recycled exhaust gas suction tude, cooler for recycled exhaust gas, cooler for recycled exhaust gas steam outlet pipe, EGR valve, EGR valve steam outlet pipe, air inlet tube and suction tude etc.Its technological scheme is: outlet pipe, cooler for recycled exhaust gas suction tude, cooler for recycled exhaust gas, cooler for recycled exhaust gas steam outlet pipe, EGR valve steam outlet pipe, air inlet tube and suction tude connect successively by described order.Cooler for recycled exhaust gas is placed in the rear side of motor; Cooler for recycled exhaust gas suction tude and be attached thereto the right side that the outlet pipe that connects is placed in motor; Cooler for recycled exhaust gas steam outlet pipe and be attached thereto the left side that the EGR valve steam outlet pipe that connects is placed in motor.EGR valve steam outlet pipe is provided with three-way interface: wherein two interfaces are connected with air inlet tube with the cooler for recycled exhaust gas steam outlet pipe respectively; The another one interface is connected with the EGR valve, by the EGR valve, controls the suction tude charge flow rate.
Reduce the in-cylinder combustion temperature and suppress NO
XThe principle that generates is: by outlet pipe, draw a part of waste gas, via cooler for recycled exhaust gas, reduce temperature, the EGR valve will be according to the different operating modes of motor operation, and the waste gas of controlling different amounts enters into suction tude and carries out secondary combustion.The partial tail gas of discharge is mixed and burns with fresh air, when having improved the air inlet temperature, also lowered the tail gas total release, thereby reach the purpose that reduces exhaust index.
Characteristics of the present utility model and beneficial effect are, the native system compact structure, change to the diesel engine intake pipeline is little, on original (meeting state Ⅲ emission standard) diesel engine model basis, egr system is set rationally, with low cost, make it meet state's IV emission standard, improved discharge control level, have good economic and social benefit, and can meet the requirement of car load spatial design.
The accompanying drawing explanation
Fig. 1 is the stereogram of the utility model principle and structure.
Fig. 2 is Fig. 1 air inlet side structure schematic diagram.
Fig. 3 is Fig. 1 exhaust side structural representation.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, structure of the present utility model is described further.
Diesel engine march-past gas recirculation system, its structure is: outlet pipe 1, cooler for recycled exhaust gas suction tude 2, cooler for recycled exhaust gas 3, cooler for recycled exhaust gas steam outlet pipe 4, EGR valve steam outlet pipe 6, air inlet tube 7 and suction tude 8 connect successively by described order.Cooler for recycled exhaust gas is placed in the rear side of motor; Cooler for recycled exhaust gas suction tude and be attached thereto the right side that the outlet pipe that connects is placed in motor; Cooler for recycled exhaust gas steam outlet pipe and be attached thereto the left side that the EGR valve steam outlet pipe that connects is placed in motor.EGR valve steam outlet pipe is provided with three-way interface: wherein two interfaces are connected with air inlet tube 7 with cooler for recycled exhaust gas steam outlet pipe 4 respectively; The another one interface is connected with EGR valve 5, by the EGR valve, controls the suction tude charge flow rate.The EGR valve is arranged on the below of air inlet tube 7.Because cooler for recycled exhaust gas steam outlet pipe pipeline section is longer, so centre is provided with supporting frame 9.
Waste gas is discharged through outlet pipe, through the cooler for recycled exhaust gas suction tude, to cooler for recycled exhaust gas, in cooler for recycled exhaust gas, cool, then by cooler for recycled exhaust gas steam outlet pipe (controlling through the EGR valve), then enter air inlet tube, finally enter suction tude, realize the recycling of waste gas.
The change that egr system arranges, make with the Placement of associated components and also will change, but, due to the both sides of this system layout at motor, so also have inhomogeneity characteristics with the shared space of its connected element, make like this compactness of diesel engine integral body more rationally concentrate.
Claims (3)
1. diesel engine march-past gas recirculation system, comprise outlet pipe, the cooler for recycled exhaust gas suction tude, cooler for recycled exhaust gas, the cooler for recycled exhaust gas steam outlet pipe, the EGR valve, EGR valve steam outlet pipe, air inlet tube and suction tude, it is characterized in that: outlet pipe (1), cooler for recycled exhaust gas suction tude (2), cooler for recycled exhaust gas (3), cooler for recycled exhaust gas steam outlet pipe (4), EGR valve steam outlet pipe (6), air inlet tube (7) and suction tude (8) connect successively by described order, cooler for recycled exhaust gas is placed in the rear side of motor, cooler for recycled exhaust gas suction tude and be attached thereto the right side that the outlet pipe that connects is placed in motor, cooler for recycled exhaust gas steam outlet pipe and be attached thereto the left side that the EGR valve steam outlet pipe that connects is placed in motor, EGR valve steam outlet pipe is provided with three-way interface, and wherein two interfaces are connected with air inlet tube (7) with cooler for recycled exhaust gas steam outlet pipe (4) respectively, the another one interface is connected with EGR valve (5), by the EGR valve, controls the suction tude charge flow rate.
2. according to diesel engine march-past gas recirculation system claimed in claim 1, it is characterized in that described EGR valve (5) is arranged on the below of described air inlet tube (7).
3. according to diesel engine march-past gas recirculation system claimed in claim 1, it is characterized in that being provided with supporting frame (9) in the middle of described cooler for recycled exhaust gas steam outlet pipe (4) pipeline section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202238602U CN203296966U (en) | 2013-04-27 | 2013-04-27 | Separate EGR (exhaust gas recirculation) system of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202238602U CN203296966U (en) | 2013-04-27 | 2013-04-27 | Separate EGR (exhaust gas recirculation) system of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203296966U true CN203296966U (en) | 2013-11-20 |
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ID=49572980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202238602U Expired - Lifetime CN203296966U (en) | 2013-04-27 | 2013-04-27 | Separate EGR (exhaust gas recirculation) system of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203296966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758665A (en) * | 2013-12-31 | 2014-04-30 | 广西玉柴机器股份有限公司 | Arrangement structure of electric control EGR (Exhaust Gas Recirculation) system |
-
2013
- 2013-04-27 CN CN2013202238602U patent/CN203296966U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758665A (en) * | 2013-12-31 | 2014-04-30 | 广西玉柴机器股份有限公司 | Arrangement structure of electric control EGR (Exhaust Gas Recirculation) system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Separate EGR (exhaust gas recirculation) system of diesel engine Effective date of registration: 20190612 Granted publication date: 20131120 Pledgee: LINGYUAN IRON & STEEL GROUP CO.,LTD. Pledgor: DONGFENG CHAOYANG DIESEL 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: 20131120 |
|
| CX01 | Expiry of patent term |