CN101846012A - Internal exhaust gas recirculation structure for internal-combustion engine cylinder head - Google Patents
Internal exhaust gas recirculation structure for internal-combustion engine cylinder head Download PDFInfo
- Publication number
- CN101846012A CN101846012A CN201010171675A CN201010171675A CN101846012A CN 101846012 A CN101846012 A CN 101846012A CN 201010171675 A CN201010171675 A CN 201010171675A CN 201010171675 A CN201010171675 A CN 201010171675A CN 101846012 A CN101846012 A CN 101846012A
- Authority
- CN
- China
- Prior art keywords
- cylinder head
- exhaust gas
- gas recirculation
- passage
- exhaust
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 18
- 210000003625 skull Anatomy 0.000 claims description 12
- 238000010304 firing Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 68
- 239000002912 waste gas Substances 0.000 abstract description 13
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000037361 pathway Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention relates to an internal exhaust gas recirculation structure for an internal-combustion engine cylinder head, comprising a cylinder head. The cylinder head is provided with a gas inlet channel and a gas exhaust channel which are connected with a combustion chamber, and the cylinder head is connected with a cylinder head cover. The internal exhaust gas recirculation structure for the internal-combustion engine cylinder head is characterized in that the cylinder head and the cylinder head cover are provided with waste gas circulation channels which are communicated mutually, the gas inlets of the waste gas circulation channels are communicated with the gas exhaust channel arranged on the cylinder head, and the gas outlets of the waste gas circulation channels are communicated with the gas inlet channel arranged on the cylinder head. The internal exhaust gas recirculation structure for the internal-combustion engine cylinder head has simple structure, good cooling effect and low cost and can reduce the emission of harmful gases.
Description
Technical field
The present invention relates to compact internal combustion engine, be specifically related to a kind of built-in exhaust gas recirculation structure of cylinder head of internal combustion engine.
Background technique
In the engine exhaust of vehicle, the waste gas of the exhaust passageway of partly flowing through is introduced inlet air pathway, reduce the combustion temperature of mixed gas, adopt exhaust gas recirculation path (ERG " Exhaust Gas Recirculation ") device (exhaust gas recirculation valve, ERG valve) to suppress NO usually
xGeneration.In compact internal combustion engine, mainly adopt two kinds of exhaust gas recirculation access structures at present, the one, external, promptly link to each other with the suction port place by an external pipeline in exhaust ports, constitute the EGR passage, this complex structure, and cause breakage to produce potential safety hazard easily because of external pipe; The 2nd, form the EGR passage by near the boring inlet and outlet gate seat of cylinder head, this method can't be cooled off because of EGR gas, make the waste exhaust gases quality of passing through EGR descend, the waste exhaust gases ratio that is back to cylinder combustion by EGR is little, the emission reduction effect of harmful gas is bad, and this phenomenon is particularly outstanding when high load.
Summary of the invention
The built-in exhaust gas recirculation structure that the purpose of this invention is to provide a kind of cylinder head of internal combustion engine, this built-in exhaust gas recirculation structure is simple in structure, good cooling results, cost is low, and can reduce discharge of harmful gases.
The object of the present invention is achieved like this: the built-in exhaust gas recirculation structure of cylinder head of internal combustion engine, comprise cylinder head, cylinder head has gas-entered passageway and the exhaust passage that is communicated with the firing chamber, be connected with the cylinder skull on the cylinder head, described cylinder head covers to be provided with cylinder head and is communicated with the exhaust gas recirculation passage that forms circulation loop each other, the suction port of exhaust gas recirculation passage is communicated with exhaust passage on the cylinder head, and the air outlet of exhaust gas recirculation passage is communicated with gas-entered passageway on the cylinder head.
The suction port of described exhaust gas recirculation passage is located at the zone of positive pressure of the exhaust passage on the cylinder head, and the negative pressuren zone of the gas-entered passageway on the cylinder head is located in the air outlet of described exhaust gas recirculation passage.
Described exhaust gas recirculation passage connects in the metal solid of cylinder skull.
Described exhaust gas recirculation passage is inverted u-shaped.
Owing to adopt technique scheme, cover to be provided with at cylinder head and cylinder head and be communicated with the exhaust gas recirculation passage that forms circulation loop each other, the suction port of exhaust gas recirculation passage is communicated with exhaust passage on the cylinder head, and the air outlet of exhaust gas recirculation passage is communicated with gas-entered passageway on the cylinder head.Exhaust gas recirculation passage is used for the part of the waste gas of the exhaust passageway of the motor of flowing through is supplied with inlet air pathway, makes that a large amount of unburned gass utilize once more in the waste gas, reduces discharge of harmful gases.The exhaust gas recirculation passage that is communicated with exhaust passage and gas-entered passageway is built-in, only need in the metal solid of the gentle cylinder head of cylinder skull exhaust gas recirculation passage be set gets final product, cancelled the exhaust gas recirculation valve described in the background technique (ERG valve), have simple in structure, cost-effective advantage, because structure of the present invention does not need to safeguard, therefore, can also reduce maintenance cost.Exhaust gas recirculation passage of the present invention is inverted u-shaped in the gentle cylinder head cover of cylinder head, make that its passage is longer, when waste gas process exhaust gas recirculation passage, the holdup time of waste gas in passage is long, help the heat radiation of waste gas, the waste gas good cooling results reduces discharge of harmful gases.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
In the accompanying drawing, 1 is cylinder head, and 2 is the exhaust passage, and 3 is gas-entered passageway, and 4 is exhaust gas recirculation passage, and 4a is a suction port, and 4b is the air outlet, and 5 is the cylinder skull, and 6 is rocker arm chamber.
Embodiment
With reference to accompanying drawing, the built-in exhaust gas recirculation structure of cylinder head of internal combustion engine, comprise cylinder head 1, cylinder head 1 is provided with gas-entered passageway 3 and the exhaust passage 2 that is communicated with the firing chamber, gas-entered passageway 3 is communicated with the firing chamber, because the negative pressure that the gas distribution system of air current flow and motor produces when air-breathing, forms the less negative pressuren zone of air pressure at gas-entered passageway 3 near the position of intake valves, the tail end of gas-entered passageway 3 bendings is provided with intake valve (not indicating among the figure), and exhaust passage 2 is communicated with the firing chamber; The malleation that produces when flowing the gas distribution system exhaust that reaches motor owing to air flow divert, 2 positions near the firing chamber form the bigger zone of positive pressure of pressure in the exhaust passage, the connection firing chamber end of exhaust passage is provided with exhaust valve (not indicating among the figure), be connected with cylinder skull 5 by bolt on the cylinder head 1, the space between cylinder head and the cylinder skull forms rocker arm chamber 6.Described cylinder head covers to be provided with cylinder head and is communicated with the exhaust gas recirculation passage 4 that forms circulation loop each other, the suction port 4a of exhaust gas recirculation passage 4 is communicated with exhaust passage 2 on the cylinder head, the suction port 4a of circulation canal is located at the zone of positive pressure of the exhaust passage on the cylinder head, and off-gas flows enters exhaust gas recirculation passage 4 in the bigger pressure effect of zone of positive pressure; The air outlet 4b of exhaust gas recirculation passage 4 is communicated with gas-entered passageway 3 on the cylinder head, and the negative pressuren zone of described gas-entered passageway is located in the air outlet of exhaust gas recirculation passage.The suction port 4a of circulation canal is right against the exhaust gas recirculation passage 4 of cylinder skull, and the air outlet 4b of exhaust gas recirculation passage 4 is right against the exhaust gas recirculation passage 4 of cylinder skull, is convenient to the setting of exhaust gas recirculation passage 4.Negative pressuren zone pressure is little, is convenient to exhaust gas recirculation passage 4 and enters gas-entered passageway, and exhaust gas recirculation passage 4 to gas-entered passageway 3, enters the part exhaust gas recirculation in the exhaust passage 2 then the firing chamber and burns once more, reduces discharge of harmful gases.During engine operation, off-gas flows enters exhaust gas recirculation passage 4 under the positive pressure of the exhaust passage on the cylinder head, because negative pressuren zone pressure is little, the part exhaust gas recirculation of process exhaust gas recirculation passage 4 is to gas-entered passageway 3, enter the firing chamber then and burn once more, reduced discharge of harmful gases.Described exhaust gas recirculation passage 4 is positioned at the metal solid part of cylinder skull, and logical 4 roads of the waste gas circulation of cylinder head and cylinder skull are inverted u-shaped, make exhaust gas recirculation passage 4 longer, waste gas therein the holdup time long, the heat radiation that helps waste gas is cooled off.
Claims (4)
1. the built-in exhaust gas recirculation structure of a cylinder head of internal combustion engine, comprise cylinder head, cylinder head has gas-entered passageway and the exhaust passage that is communicated with the firing chamber, be connected with the cylinder skull on the cylinder head, it is characterized in that: described cylinder head covers with cylinder head and is provided with the exhaust gas recirculation passage that is communicated with each other, the suction port of exhaust gas recirculation passage is communicated with exhaust passage on the cylinder head, and the air outlet of exhaust gas recirculation passage is communicated with gas-entered passageway on the cylinder head.
2. the built-in exhaust gas recirculation structure of cylinder head of internal combustion engine according to claim 1, it is characterized in that: the suction port of described exhaust gas recirculation passage is positioned at the zone of positive pressure of the exhaust passage on the cylinder head, and the air outlet of described exhaust gas recirculation passage is positioned at the negative pressuren zone of the gas-entered passageway on the cylinder head.
3. the built-in exhaust gas recirculation structure of cylinder head of internal combustion engine according to claim 1, it is characterized in that: described exhaust gas recirculation passage is arranged in the metal solid of cylinder skull.
4. the built-in exhaust gas recirculation structure of cylinder head of internal combustion engine according to claim 1, it is characterized in that: described exhaust gas recirculation passage is inverted u-shaped.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171675A CN101846012A (en) | 2010-05-14 | 2010-05-14 | Internal exhaust gas recirculation structure for internal-combustion engine cylinder head |
| PCT/CN2011/074063 WO2011141002A1 (en) | 2010-05-14 | 2011-05-13 | Internal exhaust gas recirculation structure for internal combustion engine cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171675A CN101846012A (en) | 2010-05-14 | 2010-05-14 | Internal exhaust gas recirculation structure for internal-combustion engine cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101846012A true CN101846012A (en) | 2010-09-29 |
Family
ID=42770777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010171675A Pending CN101846012A (en) | 2010-05-14 | 2010-05-14 | Internal exhaust gas recirculation structure for internal-combustion engine cylinder head |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101846012A (en) |
| WO (1) | WO2011141002A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106321273A (en) * | 2015-07-03 | 2017-01-11 | 常州科普动力机械有限公司 | Cylinder cover used for engine and engine using cylinder cover |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10330054B2 (en) * | 2016-03-24 | 2019-06-25 | Ford Global Technologies, Llc | Systems and method for an exhaust gas recirculation cooler coupled to a cylinder head |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4492209A (en) * | 1981-06-05 | 1985-01-08 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust gas recirculation system |
| EP0701048A1 (en) * | 1994-09-10 | 1996-03-13 | Ford Motor Company Limited | A cylinder head |
| CN201125804Y (en) * | 2007-12-14 | 2008-10-01 | 比亚迪股份有限公司 | Internal combustion engine waste gases recirculating system |
| CN201125796Y (en) * | 2007-12-18 | 2008-10-01 | 广西玉柴机器股份有限公司 | Cylinder head of a diesel engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002285915A (en) * | 2001-03-27 | 2002-10-03 | Toyota Motor Corp | Exhaust recirculation passage for cylinder head |
| 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 |
-
2010
- 2010-05-14 CN CN201010171675A patent/CN101846012A/en active Pending
-
2011
- 2011-05-13 WO PCT/CN2011/074063 patent/WO2011141002A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4492209A (en) * | 1981-06-05 | 1985-01-08 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust gas recirculation system |
| EP0701048A1 (en) * | 1994-09-10 | 1996-03-13 | Ford Motor Company Limited | A cylinder head |
| CN201125804Y (en) * | 2007-12-14 | 2008-10-01 | 比亚迪股份有限公司 | Internal combustion engine waste gases recirculating system |
| CN201125796Y (en) * | 2007-12-18 | 2008-10-01 | 广西玉柴机器股份有限公司 | Cylinder head of a diesel engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106321273A (en) * | 2015-07-03 | 2017-01-11 | 常州科普动力机械有限公司 | Cylinder cover used for engine and engine using cylinder cover |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011141002A1 (en) | 2011-11-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100929 |