CN202611934U - Air inlet connecting pipe of engine exhaust gas recirculation (EGR) system - Google Patents
Air inlet connecting pipe of engine exhaust gas recirculation (EGR) system Download PDFInfo
- Publication number
- CN202611934U CN202611934U CN2012202306802U CN201220230680U CN202611934U CN 202611934 U CN202611934 U CN 202611934U CN 2012202306802 U CN2012202306802 U CN 2012202306802U CN 201220230680 U CN201220230680 U CN 201220230680U CN 202611934 U CN202611934 U CN 202611934U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- control valve
- egr control
- valve seat
- egr
- 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 discloses an air inlet connecting pipe of an engine exhaust gas recirculation (EGR) system. The air inlet connecting pipe is integrally formed and comprises an air inlet pipe, a waste gas inlet pipe and an EGR control valve seat, wherein the waste gas inlet pipe is communicated with the air inlet pipe, and the EGR control valve seat is positioned at one end of the waste gas inlet pipe. The air inlet connecting pipe integrating the EGR control valve seat is reasonable and simple in structure, wherein an EGR control valve motor is directly matched and assembled with the air inlet connecting pipe through the EGR control valve seat, so that the assembly precision control is accurate; complex parts of the EGR control valve seat are reduced, so that the corresponding cost is reduced, the arrangement space of an engine is optimized, and the whole air inlet connecting pipe is attractive; and on the aspect of casting process, the casting process is greatly optimized on the premise that the function requirement of the structure is ensured, and the yield of a product is improved.
Description
Technical field
The utility model relates to engine EGR system field, particularly a kind of engine EGR system air inlet tube.
Background technique
The air inlet side is isolated and imported to exhaust gas recirculatioon (Exhaust Gas Recirculation) will be discharged gas for automobile with compact internal combustion engine after burning a part makes its technology of burning once again (gimmick or method).Main purpose can improve the rate of fuel consumption rate when discharging the nitrogen oxide (NOx) in the gas and sharing sub load for reducing.The prefix " EGR " of getting its each English individual character is common name.
Waste gas gets into the egr system air inlet tube and utilizes the switching that need control air flue through EGR control valve driven by motor EGR control valve again, and EGR control valve motor is installed on the EGR control valve seat, and then is assembled on the air inlet tube together.
Existing technical disadvantages is: EGR control valve seat structure more complicated, design, and EGR control valve seat are separately installed and are taken up room greatly, are not easy to install.
The model utility content
The utility model is in order to overcome defective in the above-mentioned existing technology, provides a kind of rational in infrastructure simple, and volume is moderate, the integrated engine EGR system air inlet tube of EGR control valve seat.
For achieving the above object, according to the utility model a kind of engine EGR system air inlet tube is provided, this air inlet tube is one-body molded, and concrete structure comprises: air intake duct and exhaust inlet pipe, and EGR control valve seat; Exhaust inlet pipe is communicated with air intake duct, and the EGR control valve seat is positioned at an end of exhaust inlet pipe.
In the technique scheme, an end of air intake duct is provided with the rectangle mounting flange.
In the technique scheme, an end of exhaust inlet pipe is provided with the rhombus mounting flange.
Compared with prior art; The utlity model has following beneficial effect: the air inlet tube of the integrated EGR control valve seat of the utility model is rational in infrastructure simple; EGR control valve motor wherein directly cooperates assembling through the EGR control valve seat with air inlet tube, makes that assembly precision control is more accurate; Reduce this complicated parts of EGR control valve seat simultaneously, saved corresponding cost, and optimized engine arrangement space and overall appearance; Also have, aspect casting technique, under the prerequisite that guarantees the structure function demand, greatly optimized casting manufacturability, improved the finished product rate.
Description of drawings
Fig. 1 is the main TV structure schematic representation of the engine EGR system air inlet tube of the utility model;
Fig. 2 is the plan structure schematic representation of the engine EGR system air inlet tube of the utility model;
Fig. 3 is the sectional structure schematic representation of the A-A direction of Fig. 2;
Fig. 4 is the sectional structure schematic representation of the B-B direction of Fig. 2;
Fig. 5 is the left TV structure schematic representation of the engine EGR system air inlet tube of the utility model;
In conjunction with the accompanying drawing following reference character of mark above that:
The 1-air intake duct, 11-rectangle mounting flange, 2-exhaust inlet pipe, 21-arm, 22-rhombus mounting flange, 3-EGR control valve seat, 4-EGR control valve motor.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of embodiment.
As shown in Figure 1, the design that is formed in one of the engine EGR system air inlet tube of the utility model comprises: air intake duct 1 and exhaust inlet pipe 2, and EGR control valve seat 3.Wherein, air intake duct 1 is the L type, and right-hand member is the air inlet end; The bottom is the air outlet side, and is provided with rectangle mounting flange 11 (as shown in Figure 2).
EGR control valve seat 3 is a rhombus, is positioned at the front end (towards an end of paper) of exhaust inlet pipe 2.During assembling, EGR control valve motor 4 directly passes through bolts assemblies to EGR control valve seat 3, and the structure of EGR control valve seat 3 is fit to the installation dimension and the fit tolerance of EGR control valve motor 4.
(arrow is represented the flow direction of waste gas and fresh air respectively) as shown in Figure 4; In the engine operation process; After controlling the EGR control valve and open the air flue of exhaust inlet pipe 2 through EGR control valve motor 4; Waste gas gets into air intake duct 1 by exhaust inlet pipe 2 through arm 21, and 1 li fresh air airflow direction of this moment off-gas flows and air intake duct is identical, and the waste gas of entering does not influence the charge air flow of fresh air; Make the airflow direction design of this air inlet tube can fully satisfy the engine operation demand, strengthened the stability of engine operation.
The air inlet tube of the integrated EGR control valve seat of the utility model is rational in infrastructure simple, and EGR control valve motor wherein directly cooperates assembling through the EGR control valve seat with air inlet tube, makes that assembly precision control is more accurate; Reduce this complicated parts of EGR control valve seat simultaneously, saved corresponding cost, and optimized engine arrangement space and overall appearance; Also have, aspect casting technique, under the prerequisite that guarantees the structure function demand, greatly optimized casting manufacturability, improved the finished product rate.
More than the disclosed several specific embodiments that are merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.
Claims (3)
1. an engine EGR system air inlet tube is characterized in that this air inlet tube is one-body molded, and concrete structure comprises: air intake duct and exhaust inlet pipe, and EGR control valve seat; Said exhaust inlet pipe is communicated with said air intake duct, and said EGR control valve seat is positioned at an end of said exhaust inlet pipe.
2. engine EGR according to claim 1 system air inlet tube is characterized in that an end of said air intake duct is provided with the rectangle mounting flange.
3. engine EGR according to claim 1 and 2 system air inlet tube is characterized in that an end of said exhaust inlet pipe is provided with the rhombus mounting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202306802U CN202611934U (en) | 2012-05-22 | 2012-05-22 | Air inlet connecting pipe of engine exhaust gas recirculation (EGR) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202306802U CN202611934U (en) | 2012-05-22 | 2012-05-22 | Air inlet connecting pipe of engine exhaust gas recirculation (EGR) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611934U true CN202611934U (en) | 2012-12-19 |
Family
ID=47345640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202306802U Expired - Fee Related CN202611934U (en) | 2012-05-22 | 2012-05-22 | Air inlet connecting pipe of engine exhaust gas recirculation (EGR) system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611934U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912410A (en) * | 2013-01-09 | 2014-07-09 | 广西玉柴机器股份有限公司 | ERG mixer of dual-gas pickup structure |
| CN105351124A (en) * | 2015-12-16 | 2016-02-24 | 广西玉柴机器股份有限公司 | Air inlet piping of engine |
| CN108223211A (en) * | 2018-02-07 | 2018-06-29 | 广西玉柴机器股份有限公司 | The air inlet tube of V-type diesel |
-
2012
- 2012-05-22 CN CN2012202306802U patent/CN202611934U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912410A (en) * | 2013-01-09 | 2014-07-09 | 广西玉柴机器股份有限公司 | ERG mixer of dual-gas pickup structure |
| CN103912410B (en) * | 2013-01-09 | 2016-06-08 | 广西玉柴机器股份有限公司 | A kind of two EGR mixer getting depressed structure |
| CN105351124A (en) * | 2015-12-16 | 2016-02-24 | 广西玉柴机器股份有限公司 | Air inlet piping of engine |
| CN108223211A (en) * | 2018-02-07 | 2018-06-29 | 广西玉柴机器股份有限公司 | The air inlet tube of V-type diesel |
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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 |
Granted publication date: 20121219 Termination date: 20180522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |