CN101943078A - Cylinder head of internal combustion engine - Google Patents
Cylinder head of internal combustion engine Download PDFInfo
- Publication number
- CN101943078A CN101943078A CN 201010261033 CN201010261033A CN101943078A CN 101943078 A CN101943078 A CN 101943078A CN 201010261033 CN201010261033 CN 201010261033 CN 201010261033 A CN201010261033 A CN 201010261033A CN 101943078 A CN101943078 A CN 101943078A
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- Prior art keywords
- cylinder head
- mixed gas
- gas inlet
- oil
- combustion engine
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Abstract
The invention provides a cylinder head of an internal combustion engine, which is provided with a mixed gas inlet and an oil return hole on the combination part of the cylinder head and a crank case, wherein the mixed gas inlet and the oil return hole are respectively communicated with the crank case; a cylinder head oil chamber is formed between the upper part of the cylinder head and a cylinder head cover and is communicated with the mixed gas inlet, the oil return hole and an oil-gas separation cavity on the cylinder head cover; and the mixed gas inlet of the cylinder head is pressed with a mixed gas inlet tube the outlet height of which is higher than the oil surface height of lubricating oil in the cylinder head oil chamber. The invention omits the original baffles arranged around the mixed gas inlet of the cylinder head so as to relatively simplify the structure of the cylinder head, simplify the casting die of the cylinder head and improve the casting qualification rate of the cylinder head; and by changing the installation height of the mixed gas inlet tube, the cylinder head can be suitable for various types of entire vehicle arrangements, and the cylinder head has high popularity.
Description
Technical field
The present invention relates to the PCV system of internal-combustion engine, be specifically related to the aeration structure of cylinder head.
Background technique
Internal-combustion engine is when operation, and the fuel-air mixture that is entered crankcase by the firing chamber can influence engine performance and atmosphere pollution.According to laws and regulations requirement, internal-combustion engine all adopts PCV system at present, by specific path mixed gas is introduced the combustion chambers of internal combustion engines burning.In order to make the Structure of Internal-Combustion Engine compactness, generally be on crankcase and cylinder head, to arrange combi inlet port.
When car load in when operation, the inclination angle of internal-combustion engine can change, under certain inclination angle state, the lubricant oil in the cylinder head grease chamber can flow back to crankcase by combi inlet port, and the mixed gas throughput is reduced, and influences the engine crankshaft ventilation system performance.For fear of this problem, need be at the combi inlet port arranged around baffle plate of cylinder head.But at the combi inlet port arranged around baffle plate of cylinder head, make the air cylinder head structure complexity, increased the casting difficulty of cylinder head.When the layout angle of internal-combustion engine on car load changes, also to adjust the height of baffle plate, need thus to adjust the cylinder head casting mould, make cylinder head casting mould versatility bad.
Summary of the invention
The objective of the invention is to problem at the prior art existence, a kind of cylinder head of internal-combustion engine is provided, by improving the combi inlet port structure of combustion engine cylinder head, guarantee that the PCV system of internal-combustion engine is reliable, improve the casting up-to-standard rate and the versatility of cylinder head.
The technical solution adopted in the present invention is as follows:
A kind of cylinder head of internal-combustion engine, binding site at described cylinder head and crankcase is provided with combi inlet port and spill port, be communicated with crankcase respectively, between cylinder head top and valve mechanism cover, be formed with the cylinder head grease chamber, be communicated with the Oil-gas Separation chamber on combi inlet port, spill port and the valve mechanism cover;
It is characterized in that: in the combi inlet port of cylinder head, be pressed into a mixed gas inlet pipe, the mixed gas inlet pipe go out the fuel head that open height is higher than the lubricant oil in the cylinder head grease chamber.During concrete the manufacturing, the setting height(from bottom) of mixed gas inlet pipe can according to internal-combustion engine on car load layout angle and the road conditions of car load operation determine, guarantee that internal-combustion engine is under any inclination angle, lubricant oil in the cylinder head grease chamber can not flow back to crankcase from combi inlet port, guarantees that PCV system is reliable.
The present invention has cancelled the baffle plate around the combi inlet port that originally is arranged in cylinder head, and air cylinder head structure is simplified relatively, has simplified the cylinder head casting mould thus, has improved cylinder head casting up-to-standard rate; By changing the setting height(from bottom) of mixed gas inlet pipe, make cylinder head can be suitable for various car loads and arrange the versatility height of cylinder head.
Description of drawings
Fig. 1 structural representation of the present invention
1-cylinder head among the figure, 11-combi inlet port, 12-mixed gas inlet pipe, 13-cylinder head grease chamber, 14-spill port, 2-valve mechanism cover, 21-Oil-gas Separation chamber, 22-mixed gas outlet
Embodiment
As shown in Figure 1, it has shown a kind of PCV system, comprise cylinder head 1 and valve mechanism cover 2, binding site at cylinder head 1 and crankcase is provided with combi inlet port 11 and spill port 14, be communicated with crankcase respectively, in valve mechanism cover 2, be formed with Oil-gas Separation chamber 21 by the assembling separating plate, valve mechanism cover 2 is provided with mixed gas outlet 22, Oil-gas Separation chamber 21 on combi inlet port 11 and spill port 14 and the valve mechanism cover 2 forms paths, mixed gas is introduced firing chambers by mixed gas outlet 22 burn.Between cylinder head 1 top and valve mechanism cover 2, be formed with cylinder head grease chamber 13, be communicated with combi inlet port 11, spill port 14 and Oil-gas Separation chamber 21.
Be combi inlet port 11 and the moulding of cylinder head integrally casting, the upper end is a circular hole, is used to press-fit mixed gas inlet pipe 12, mixed gas inlet pipe 12 go out the fuel head that open height is higher than the lubricant oil in the cylinder head grease chamber.It is constant that mixed gas inlet pipe 12 is pressed into the degree of depth of upper end circular hole, and by changing the length of mixed gas inlet pipe 12, the height of can regulate mixed gas inlet pipe 12 outlets can make internal-combustion engine adapt to different car loads and arrange, improves the versatility of cylinder head.
As can be seen from Fig. 1, baffle plate has been cancelled in combi inlet port 11 upper ends of cylinder head 1, makes the simple relatively of combi inlet port 11 surrounding structures change, has improved the clanability of cylinder head 1.Behind the cancellation baffle plate, make the casting mould designs simplification of cylinder head 1, improve the casting up-to-standard rate of cylinder head.
In addition, the height of mixed gas inlet pipe 12 can exceed the end face of cylinder head 1 as required, guarantees motor at any inclination angle, and the fuel head of the lubricant oil in the cylinder head grease chamber 13 can not surpass the oral area of mixed gas inlet pipe 12.In addition, 21 distances are near more good more from valve mechanism cover Oil-gas Separation chamber for the oral area of mixed gas inlet pipe 12, can reduce mixed gas in the cylinder head grease chamber 13 approach that flow, prevent that the lubricant oil oil droplet from entering the firing chamber with mixed gas by mixed gas outlet 22.But consider the factors such as vibration of valve mechanism cover, again can not be infinitely near, the beeline from valve mechanism cover Oil-gas Separation chamber 21 is 5 millimeters and is advisable.
The movement process of oil gas is: combi inlet port 11, the mixed gas inlet pipe 12 of the fuel-air mixture in the crankcase by cylinder head, enter in the Oil-gas Separation chamber 21 of cylinder head grease chamber 13 and valve mechanism cover, in Oil-gas Separation chamber 21, carry out separating of oil and mixed gas, mixed gas after the separation enters the firing chamber by mixed gas outlet 22, and oil droplet flows back to crankcase by spill port 14.
Claims (2)
1. the cylinder head of an internal-combustion engine, binding site at described cylinder head (1) and crankcase is provided with combi inlet port (11) and spill port (14), be communicated with crankcase respectively, between cylinder head (1) top and valve mechanism cover (2), be formed with cylinder head grease chamber (13), be communicated with the Oil-gas Separation chamber (21) on combi inlet port (11), spill port (14) and the valve mechanism cover (2);
It is characterized in that: in the combi inlet port (11) of cylinder head (1), be pressed into a mixed gas inlet pipe (12), mixed gas inlet pipe (12) go out the fuel head that open height is higher than the lubricant oil in the cylinder head grease chamber (13).
2. the cylinder head of internal-combustion engine according to claim 1 is characterized in that: described mixed gas inlet pipe (12) go out open height according to the end face that exceeds cylinder head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010261033 CN101943078A (en) | 2010-08-24 | 2010-08-24 | Cylinder head of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010261033 CN101943078A (en) | 2010-08-24 | 2010-08-24 | Cylinder head of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101943078A true CN101943078A (en) | 2011-01-12 |
Family
ID=43435245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010261033 Pending CN101943078A (en) | 2010-08-24 | 2010-08-24 | Cylinder head of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101943078A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389691A (en) * | 2014-10-15 | 2015-03-04 | 力帆实业(集团)股份有限公司 | Engine crankcase body oil-gas separation structure |
| CN106662037A (en) * | 2014-06-27 | 2017-05-10 | 爱尔铃克铃尔股份公司 | Cylinder head cover and method for producing a cylinder head cover |
| CN110088435A (en) * | 2016-12-20 | 2019-08-02 | 道依茨股份公司 | Internal combustion engine |
| CN111140312A (en) * | 2018-11-05 | 2020-05-12 | 丰田自动车株式会社 | Internal combustion engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0591737A1 (en) * | 1992-10-09 | 1994-04-13 | FIAT AUTO S.p.A. | System for venting oil vapour from an internal combustion engine crankcase |
| JPH08254113A (en) * | 1995-03-20 | 1996-10-01 | Suzuki Motor Corp | Blowby gas recovery device of engine |
| CN1818355A (en) * | 2006-03-08 | 2006-08-16 | 无锡开普动力有限公司 | Air-exchanging structure of crank case of four-stroke engine |
| CN2835581Y (en) * | 2005-11-11 | 2006-11-08 | 昆明云内动力股份有限公司 | Oil-gas separated engine crankshaft case |
| US20100101514A1 (en) * | 2007-02-28 | 2010-04-29 | Toyota Jidosha Kabushiki Kaisha | Positive crankcase ventilation system, cylinder head used for positive crankcase ventilation system, internal combustion engine including positive crankcase ventilation system, and positive crankcase ventilation method |
-
2010
- 2010-08-24 CN CN 201010261033 patent/CN101943078A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0591737A1 (en) * | 1992-10-09 | 1994-04-13 | FIAT AUTO S.p.A. | System for venting oil vapour from an internal combustion engine crankcase |
| JPH08254113A (en) * | 1995-03-20 | 1996-10-01 | Suzuki Motor Corp | Blowby gas recovery device of engine |
| CN2835581Y (en) * | 2005-11-11 | 2006-11-08 | 昆明云内动力股份有限公司 | Oil-gas separated engine crankshaft case |
| CN1818355A (en) * | 2006-03-08 | 2006-08-16 | 无锡开普动力有限公司 | Air-exchanging structure of crank case of four-stroke engine |
| US20100101514A1 (en) * | 2007-02-28 | 2010-04-29 | Toyota Jidosha Kabushiki Kaisha | Positive crankcase ventilation system, cylinder head used for positive crankcase ventilation system, internal combustion engine including positive crankcase ventilation system, and positive crankcase ventilation method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662037A (en) * | 2014-06-27 | 2017-05-10 | 爱尔铃克铃尔股份公司 | Cylinder head cover and method for producing a cylinder head cover |
| US10533517B2 (en) | 2014-06-27 | 2020-01-14 | Elringklinger Ag | Cylinder head cover and method for producing a cylinder head cover |
| CN104389691A (en) * | 2014-10-15 | 2015-03-04 | 力帆实业(集团)股份有限公司 | Engine crankcase body oil-gas separation structure |
| CN110088435A (en) * | 2016-12-20 | 2019-08-02 | 道依茨股份公司 | Internal combustion engine |
| CN111140312A (en) * | 2018-11-05 | 2020-05-12 | 丰田自动车株式会社 | Internal combustion engine |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110112 |