CN201125804Y - Internal combustion engine waste gases recirculating system - Google Patents
Internal combustion engine waste gases recirculating system Download PDFInfo
- Publication number
- CN201125804Y CN201125804Y CNU200720310164XU CN200720310164U CN201125804Y CN 201125804 Y CN201125804 Y CN 201125804Y CN U200720310164X U CNU200720310164X U CN U200720310164XU CN 200720310164 U CN200720310164 U CN 200720310164U CN 201125804 Y CN201125804 Y CN 201125804Y
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- waste gas
- passage
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- combustion engine
- cylinder head
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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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides an internal-combustion engine exhaust gas recirculation system, including an exhaust gas extraction channel, an exhaust steam passage, an exhaust gas induction channel and a throttle valve, wherein the exhaust steam passage is arranged in the cylinder cover of the internal-combustion engine, and the two ends of the exhaust steam passage are respectively communicated with one end of the exhaust gas extraction channel and the throttle valve, while the other end of the exhaust gas extraction channel is communicated with the exhaust gas system of the internal-combustion engine. The two ends of the exhaust gas induction channel are respectively communicated with the outlet of the throttle valve and the intake system of the internal-combustion engine, wherein the at least one of the exhaust gas extraction channel and the exhaust gas induction channel is arranged on the cylinder cover. Due to the exhaust steam passage arranged on the cylinder cover, and at least one of the exhaust gas extraction channel and the exhaust gas induction channel arranged on the cylinder cover, the use level of the pipe is reduced, the system structure is simplified, which makes the internal-combustion engine exhaust gas recirculation system compact and reduces the cost.
Description
Technical field
The utility model relates to a kind of engine exhaust gas recirculating system.
Background technique
The development power in environmental protection is one of important directions of automotive engineering.Exhaust gas recirculation (being called for short EGR) is the effective measures commonly used of controlling combustion engine discharged nitrous oxides.In order to reduce engine emission nitrogen oxides from exhaust gas content, traditional way is to connect a very long outlet pipe at the gas exhaust manifold downstream position, and this outlet pipe is connected on the EGR valve, and waste gas enters gas handling system by the EGR valve.Owing to produce vibration in the engine operation process, make pipeline produce gas leakage easily, so intensity and layout during to circuit design all have certain requirement.In addition,,, then can cause EGR throttle valve premature damage, so need be from the external load cooling unit, with the cooling EGR gas if EGR gas directly enters gas-entered passageway because delivery temperature is very high.So the complex structure of traditional gas recirculation system, cost is higher.
In order to overcome above-mentioned defective, the application's claimant submitted the utility model application of a autograph for " gas exhaust manifold, exhaust manifold pad, Cylinder Head And Egr Valve Base " on December 30th, 2005, and the notice of authorization of this application number is CN2903408Y.As a reference, quote the content of this application in this integral body.The application is the further improvement to above-mentioned application.
The model utility content
The purpose of this utility model provides a kind of engine exhaust gas recirculating system of compact structure.
The utility model provides a kind of engine exhaust gas recirculating system, this system comprises waste gas extraction channel 2, exhaust steam passage 3, waste gas is introduced passage 4 and throttle valve 9, described exhaust steam passage 3 is arranged in the cylinder head 1 of internal-combustion engine, and the two ends of exhaust steam passage 3 communicate with an end of waste gas extraction channel 2 and the inlet of throttle valve 9 respectively, the other end of described waste gas extraction channel 2 communicates with internal combustion engine exhaust system, the two ends that described waste gas is introduced passage 4 communicate with the outlet and the induction system of internal combustion engine of throttle valve 9 respectively, wherein, at least one in described waste gas extraction channel 2 and the waste gas introducing passage 4 is arranged in the cylinder head 1.
Because the gas recirculation system that the utility model provides is arranged on exhaust steam passage 3 in the cylinder head 1, and waste gas extraction channel 2 and waste gas introduce in the passage 4 at least one also be arranged in the cylinder head 1, thereby reduced the consumption of pipeline, even do not need to increase pipeline, just can realize the recirculation of engine exhaust gas, thereby simplified the structure of whole system, made the engine exhaust gas recirculating system become compact, reduced cost.In addition, under the preferable case, waste gas extraction channel 2 and/or exhaust steam passage 3 be positioned at cylinder head 1 cooling jacket 5 near, thereby do not need to increase in addition cooling unit, just can realize the cooling of engine exhaust gas, thereby simplify the structure of this system further.
Description of drawings
Fig. 1 is the structural representation of the engine exhaust gas recirculating system that provides of the utility model;
Fig. 2 is the structural representation that the waste gas of the engine exhaust gas recirculating system that provides of the utility model is introduced passage;
Fig. 3 is the structural representation of the suction tude transition pad of the engine exhaust gas recirculating system that provides of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, the engine exhaust gas recirculating system that the utility model provides comprises waste gas extraction channel 2, exhaust steam passage 3, waste gas is introduced passage 4 and throttle valve 9, described exhaust steam passage 3 is arranged in the cylinder head 1 of internal-combustion engine, and the two ends of exhaust steam passage 3 communicate with an end of waste gas extraction channel 2 and the inlet of throttle valve 9 respectively, the other end of described waste gas extraction channel 2 communicates with internal combustion engine exhaust system, the two ends that described waste gas is introduced passage 4 communicate with the outlet and the induction system of internal combustion engine of throttle valve 9 respectively, wherein, at least one in described waste gas extraction channel 2 and the waste gas introducing passage 4 is arranged in the cylinder head 1.
Waste gas extraction channel 2 can be arranged in the cylinder head 1, also waste gas can be introduced passage 4 and be arranged in the cylinder head 1, also waste gas extraction channel 2 and waste gas introducing passage 4 all can be arranged in the cylinder head 1.In order further to simplify the structure of this system, save pipeline, preferably, described waste gas extraction channel 2 and waste gas are introduced passage 4 and all are arranged in the cylinder head 1.
When being arranged on waste gas extraction channel 2 in the cylinder head 1, the other end of waste gas extraction channel 2 is communicated with an air outlet flue 6 that is arranged in the cylinder head 1 of internal combustion engine exhaust system.Can adopt variety of way well known in the art that waste gas extraction channel 2 is set in cylinder head 1, as can in cylinder head 1, opening a groove that communicates with air outlet flue 6, by bolt exhaust pipe pad 7 and outlet pipe flange 8 are connected the cylinder head exhaust side then, by exhaust pipe pad 7 and outlet pipe flange 8 described groove is sealed, thereby form waste gas extraction channel 2.There is no particular limitation to the structure of waste gas extraction channel 2 and shape, as long as can realize its function.
Can adopt variety of way well known in the art that exhaust steam passage 3 is set, as can in cylinder head 1, opening a through hole that connects cylinder head air inlet side and exhaust side, one end of this through hole is communicated with waste gas extraction channel 2, the other end of this through hole is communicated with throttle valve 9, and by the end face seal of exhaust pipe pad 7 and outlet pipe flange 8, thereby prevent the leakage of waste gas with an end that communicates with waste gas extraction channel 2 of this through hole.There is no particular limitation to the structure of exhaust steam passage 3 and shape, as long as can realize its function.
Because the pipeline of waste gas extraction channel 2 and exhaust steam passage 3 is long, so waste gas can obtain the part cooling in the process of waste gas extraction channel 2 and exhaust steam passage 3 of flowing through.In order further waste gas to be cooled off, preferably, described waste gas extraction channel 2 and/or exhaust steam passage 3 be positioned at cylinder head 1 cooling jacket 5 near.Because waste gas extraction channel 2 and exhaust steam passage 3 all are arranged in the cylinder head 1 and communicate, so waste gas extraction channel 2 and exhaust steam passage 3 can be set to a passage.In addition, waste gas extraction channel 2 can comprise the passage that more piece communicates, and exhaust steam passage 3 also can comprise the passage that more piece communicates.
Can adopt variety of way well known in the art that waste gas is introduced passage 4 is arranged in the cylinder head 1.
When waste gas being introduced passage 4 and be arranged in the cylinder head 1, an end that can make waste gas introduce passage 4 communicates with the outlet of throttle valve 9, and the other end of waste gas introducing passage 4 is communicated with the intake duct 10 that is arranged in the cylinder head 1 of induction system of internal combustion engine.In order to realize that waste gas is introduced the purpose that the intake duct 10 of the outlet of passage 4 and throttle valve 9 and induction system of internal combustion engine communicates, waste gas can be introduced passage 4 and be set to the more piece passage.Generally, waste gas introducing passage 4 communicates with all intake ducts 10 of induction system of internal combustion engine.Waste gas is introduced the structure of passage 4 and shape, and there is no particular limitation, as long as can realize its function.
As shown in Figures 2 and 3, in order to make waste gas enter intake duct 10 from throttle valve 9 more glibly, preferably, this system also comprises suction tude transition pad 11, described waste gas is introduced passage 4 and is comprised first passage 4a, second channel 4b, third channel 4c and four-way 4d, described third channel 4c is the groove shape, described first passage 4a communicates with the outlet of throttle valve 9, the two ends of described second channel 4b communicate with first passage 4a and third channel 4c respectively, described suction tude transition pad 11 is provided with waste gas guiding gutter 12, the wall setting of described suction tude transition pad 11 applying cylinder head 1, and at least a portion waste gas guiding gutter 12 is relative with four-way 4d with third channel 4c.Can adopt various fastening piece well known in the art that suction tude transition pad 11 is fixed on the cylinder head 1, as bolt.In addition, under the preferable case, suction tude transition pad 11 adopts the casting aluminium material of good heat conductivity to make, thereby can better the heat in the waste gas be shed.
Because motor is generally multi-cylinder, so four-way 4d is generally a plurality of, the number of described four-way 4d is identical with the cylinder number of motor.As shown in Figure 3, the conducting between waste gas guiding gutter 12 and the four-way 4d for convenience, preferably, described waste gas guiding gutter 12 has outstanding 12a, and described outstanding 12a is relative with four-way 4d.Normally, the number of described outstanding 12a is identical with the cylinder number of motor.As shown in Figures 2 and 3, the motor in this mode of execution is a four cylinder engine, so the number of four-way 4d and outstanding 12a also correspondingly is 4.
Described exhaust steam passage 3 and waste gas are introduced passage 4 and can be communicated with throttle valve 9 by variety of way, as fixing throttle valve 9 by various fastening pieces, the entrance and exit that makes throttle valve 9 fits together with the inlet that the outlet and the waste gas of exhaust steam passage 3 are introduced passage 4 respectively, thereby realizes that exhaust steam passage 3 and waste gas introduces communicating between passage 4 and the throttle valve 9.Also can be respectively between the entrance and exit of throttle valve 9 and inlet that the outlet and the waste gas of exhaust steam passage 3 are introduced passage 4, be connected section of a pipe, realize that exhaust steam passage 3 and waste gas introduces communicating between passage 4 and the throttle valve 9.
The working procedure of the engine exhaust gas recirculating system that the utility model provides is described below.
As Fig. 1, Fig. 2 and shown in Figure 3, waste gas enters waste gas extraction channel 2 from the air outlet flue 6 of a cylinder of internal-combustion engine, enter exhaust steam passage 3 then, because the pipeline of waste gas extraction channel 2 and exhaust steam passage 3 is long, and exhaust steam passage 3 be arranged on cooling jacket 5 in the cylinder head 1 near, so waste gas can access sufficient cooling in the process of waste gas extraction channel 2 and exhaust steam passage 3 of flowing through; Waste gas in the exhaust steam passage 3 enters throttle valve 9 by the inlet of throttle valve 9; Under the control of throttle valve 9, part waste gas enters the first passage 4a that waste gas is introduced passage 4 by the outlet of throttle valve 9, waste gas enters second channel 4b from first passage 4a then, enter third channel 4c again, waste gas enters the waste gas guiding gutter 12 that is oppositely arranged with it from third channel 4c, four outstanding 12a by waste gas guiding gutter 12 enter four four-way 4d then, enter four intake ducts 10 of internal-combustion engine at last by four four-way 4d, enter four cylinder combustions then, thereby realize the recirculation of engine exhaust gas.
Because the gas recirculation system that the utility model provides is introduced passage 4 with waste gas extraction channel 2, exhaust steam passage 3 and waste gas and is arranged in the cylinder head 1, so greatly reduced the consumption of pipeline, simplifies the structure, and has reduced cost.In addition, owing to can cool off by the 5 pairs of cycle gas of cooling jacket in the cylinder head 1, so do not need to increase cooling unit in addition, thus the structure of this system simplified further, reduced cost.
Claims (9)
1, a kind of engine exhaust gas recirculating system, this system comprises waste gas extraction channel (2), exhaust steam passage (3), waste gas is introduced passage (4) and throttle valve (9), described exhaust steam passage (3) is arranged in the cylinder head (1) of internal-combustion engine, and the two ends of exhaust steam passage (3) communicate with an end of waste gas extraction channel (2) and the inlet of throttle valve (9) respectively, the other end of described waste gas extraction channel (2) communicates with internal combustion engine exhaust system, the two ends that described waste gas is introduced passage (4) communicate with the outlet and the induction system of internal combustion engine of throttle valve (9) respectively, it is characterized in that at least one in described waste gas extraction channel (2) and the waste gas introducing passage (4) is arranged in the cylinder head (1).
2, system according to claim 1 is characterized in that, described waste gas extraction channel (2) and waste gas are introduced passage (4) and all is arranged in the cylinder head (1).
3, system according to claim 1 and 2 is characterized in that, the other end of described waste gas extraction channel (2) communicates with an air outlet flue (6) that is arranged in the cylinder head (1) of internal combustion engine exhaust system.
4, system according to claim 1 and 2 is characterized in that, described waste gas extraction channel (2) and/or exhaust steam passage (3) be positioned at cylinder head (1) cooling jacket (5) near.
5, system according to claim 1 and 2 is characterized in that, the two ends that described waste gas is introduced passage (4) communicate with the outlet of throttle valve (9) and the intake duct (10) that is arranged in the cylinder head (1) of induction system of internal combustion engine respectively.
6, system according to claim 1 and 2, it is characterized in that, this system also comprises suction tude transition pad (11), described waste gas is introduced passage (4) and is comprised first passage (4a), second channel (4b), third channel (4c) and four-way (4d), described third channel (4c) is the groove shape, described first passage (4a) communicates with the outlet of throttle valve (9), the two ends of described second channel (4b) communicate with first passage (4a) and third channel (4c) respectively, described suction tude transition pad (11) is provided with waste gas guiding gutter (12), the wall setting of described suction tude transition pad (11) applying cylinder head (1), and at least a portion waste gas guiding gutter (12) is relative with four-way (4d) with third channel (4c).
7, system according to claim 6 is characterized in that, the number of described four-way (4d) is identical with the cylinder number of motor.
8, system according to claim 6 is characterized in that, described waste gas guiding gutter (12) has outstanding (12a), and described outstanding (12a) is relative with four-way (4d).
9, system according to claim 8 is characterized in that, the number of described outstanding (12a) is identical with the cylinder number of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720310164XU CN201125804Y (en) | 2007-12-14 | 2007-12-14 | Internal combustion engine waste gases recirculating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720310164XU CN201125804Y (en) | 2007-12-14 | 2007-12-14 | Internal combustion engine waste gases recirculating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125804Y true CN201125804Y (en) | 2008-10-01 |
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ID=39999274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720310164XU Expired - Lifetime CN201125804Y (en) | 2007-12-14 | 2007-12-14 | Internal combustion engine waste gases recirculating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125804Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846012A (en) * | 2010-05-14 | 2010-09-29 | 隆鑫工业有限公司 | Internal exhaust gas recirculation structure for internal-combustion engine cylinder head |
| CN102410111A (en) * | 2010-09-17 | 2012-04-11 | 通用汽车环球科技运作有限责任公司 | Integrated exhaust gas recirculation and charge cooling system |
| CN103527359A (en) * | 2013-10-31 | 2014-01-22 | 重庆长安汽车股份有限公司 | Intake manifold connecting plate used for EGR (Exhaust Gas Recirculation) engine |
-
2007
- 2007-12-14 CN CNU200720310164XU patent/CN201125804Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846012A (en) * | 2010-05-14 | 2010-09-29 | 隆鑫工业有限公司 | Internal exhaust gas recirculation structure for internal-combustion engine cylinder head |
| WO2011141002A1 (en) * | 2010-05-14 | 2011-11-17 | 隆鑫通用动力股份有限公司 | Internal exhaust gas recirculation structure for internal combustion engine cylinder head |
| CN102410111A (en) * | 2010-09-17 | 2012-04-11 | 通用汽车环球科技运作有限责任公司 | Integrated exhaust gas recirculation and charge cooling system |
| CN102410111B (en) * | 2010-09-17 | 2014-07-16 | 通用汽车环球科技运作有限责任公司 | Integrated exhaust gas recirculation and charge cooling system |
| CN103527359A (en) * | 2013-10-31 | 2014-01-22 | 重庆长安汽车股份有限公司 | Intake manifold connecting plate used for EGR (Exhaust Gas Recirculation) engine |
| CN103527359B (en) * | 2013-10-31 | 2016-03-02 | 重庆长安汽车股份有限公司 | For the intake manifold connecting plate of EGR engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081001 |