CN1952358A - General gasoline engine cylinder head cover - Google Patents
General gasoline engine cylinder head cover Download PDFInfo
- Publication number
- CN1952358A CN1952358A CN 200610095220 CN200610095220A CN1952358A CN 1952358 A CN1952358 A CN 1952358A CN 200610095220 CN200610095220 CN 200610095220 CN 200610095220 A CN200610095220 A CN 200610095220A CN 1952358 A CN1952358 A CN 1952358A
- Authority
- CN
- China
- Prior art keywords
- cover
- sheet
- breathing
- cylinder head
- breathing sheet
- 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
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 61
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000010721 machine oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a general gasoline engine cylinder head cover, which comprises a cylinder head cover inner cover, a cylinder head cover outer cover, a breathing sheet cover and a breathing sheet, wherein a breathing cavity is formed between the outer wall of the inner cover and the inner wall of the outer cover, the breathing sheet cover and the breathing sheet are positioned in the breathing cavity, the breathing sheet is a spring steel sheet, the breathing sheet is pasted on the outer wall of the inner cover to cover a breathing opening, the breathing sheet cover is positioned on the breathing sheet and fixed on the cylinder head cover inner cover together with the breathing sheet, one end of the breathing sheet cover is upwarped to form a limiting angle which enables the breathing sheet to only swing within the angle range, and the other end of the breathing sheet cover is provided with an end face for guiding a waste gas pipe. The breathing sheet adopts the spring steel sheet and is fixed with the inner cover, so the problems of bonding and clamping of the breathing sheet are fundamentally solved, the phenomena of normally open and normally closed are completely avoided, the breathing sheet works reliably, the smooth air flow is ensured, and the aim of balancing the air pressure in the crankcase is effectively fulfilled.
Description
Technical field
The present invention relates to the component of general gasoline engines, specifically refer to general gasoline engine cylinder head cover.
Background technique
General gasoline engine cylinder head cover is generally formed by cylinder head cover inner cover and the tight pressing of cylinder head cover outer cover, be formed with the breathing chamber between interior cover outer wall and outer cover inwall, breathe chamber and be communicated with, on the cylinder head cover inner cover, be provided with a pneumostome that crankcase is communicated with the breathing chamber with atmosphere.Be installed with the breathing sheet cover that flue gas leading is play the guiding role above pneumostome, respiratory cavity below the sheet cover is indoor to be provided with a breathing sheet that is in free state breathing, and the upward stroke of breathing sheet is breathed the sheet cover and limited.When descent of piston gas is compressed, breathes sheet under positive pressure and open crankcase is communicated with atmosphere; When piston stroking upward, by adhesive pneumostome is covered crankcase and atmosphere are cut off thereby under negative pressure, breathe sheet, breathe that sheet is realized exhaling like this, air-breathing function in limited field, thus the interior air pressure of balance crankshaft case.The cylinder head cover of this structure has the following disadvantages: be in free state owing to breathe sheet on the one hand, in its movement process, may move radially, thereby generation catching phenomenon, cause and only depend on malleation can't wash the breathing sheet open, make pneumostome be in normal off status, cause crankcase pressure excessive, machine oil takes place from the oil sealing leakage phenomenon.
On the other hand, when general gasoline engines was worked, box house and cylinder interior had gas and enter cylinder head cover (these gases most of for machine oil steam) by cylinder head, and cylinder head cover is back in the casing after with condensation of gas.The breathing sheet that at present most general gasoline engine cylinder head cover uses is epoxy glass cloth laminated board, after general gasoline engines work a period of time, just having a certain amount of waste oil accumulates on cylinder head cover inside and the breathing sheet, influence the gas flow of cylinder head cover thus, and the breathing sheet is bonded in breathes on the sheet cover inwall, make and only depend on breathing sheet gravity and negative pressure that the breathing sheet is fallen, pneumostome occurs and be in normally open, thereby cause machine oil to follow the interior AIR MIXTURES of crankcase to enter the sky filter in a large number, influence the stable of consumption of lubricating oil and engine power.
Summary of the invention
At existing general gasoline engine cylinder head cover above shortcomings, breathe the sheet reliable operation, the general gasoline engine cylinder head cover that pneumostome normally-open normally-close phenomenon improves general gasoline engines stability and reduces consumption of lubricating oil can not occur thereby the purpose of this invention is to provide a kind of making.
Technological scheme of the present invention is achieved in that a kind of general gasoline engine cylinder head cover, comprise the cylinder head cover inner cover, the cylinder head cover outer cover, breathe the sheet cover and breathe sheet, be formed with the breathing chamber between interior cover outer wall and outer cover inwall, it is indoor that breathing sheet cover and breathing sheet are positioned at respiratory cavity, on the cylinder head cover inner cover, be provided with a pneumostome that crankcase is communicated with the breathing chamber, its improvement is: described breathing sheet is a spring steel plate, in being attached to, the breathing sheet on the cover outer wall pneumostome is covered, breathing sheet cover is positioned to breathe on the sheet and with the breathing sheet and is fixed on together on the cylinder head cover inner cover, breathe sheet cover one end and upwarp formation can only be swung the breathing sheet in this angular range spacing angle, breathe the sheet cover the other end and have the end face that flue gas leading is led.
The present invention is owing to the breathing sheet and inner cover is fixed and adopt spring steel plate to replace existing epoxy glass cloth laminated board, fundamentally having solved the clamping stagnation that may occur is the normally closed phenomenon of pneumostome, because it has certain elasticity, under positive pressure, can automatically pneumostome be opened the elasticity of utilizing spring steel plate self then and reach the purpose of breathing the sheet return.On the other hand, spring steel plate has stronger grease resistance than epoxy glass cloth laminated board, thereby breathes sheet and be difficult to bonding, thereby ensures respiration the sheet folding freely, and airflow smooth has improved the general gasoline engines power stability greatly, and reduces consumption of lubricating oil.Limited the open angle of breathing sheet owing to breathe the sheet cover, avoided breathing the long-term wide swing of sheet and the elastic failure problem that causes, realized simultaneously the flue gas leading leading role.
The present invention is not only simple in structure, is skillfully constructed, and does not increase cost substantially, and solved fundamentally that the breathing sheet is bonding, the clamping stagnation problem, and stopped fully often to open, normally closed phenomenon, breathe the sheet reliable operation, guaranteed that air-flow is unobstructed, reached the purpose of balance crankshaft case internal air pressure effectively.
Description of drawings
Fig. 1-structural representation of the present invention.
The B of Fig. 2-Fig. 1 is to view.
The C-C sectional view of Fig. 3-Fig. 2.
Fig. 4-Fig. 1 left view.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 4, from the figure as can be seen, general gasoline engine cylinder head cover of the present invention, comprise cylinder head cover inner cover 1, cylinder head cover outer cover 2, breathe sheet cover 6 and breathe sheet 3, be formed with between interior cover outer wall and outer cover inwall and breathe chamber 4, breathing sheet cover 6 and breathe sheet 3 and be positioned at and breathe chamber 4, be provided with one with crankcase and the pneumostome 5 that breathing chamber 4 is communicated with on cylinder head cover inner cover 1, more than is part same as the prior art.Improvement of the present invention from Fig. 1, Fig. 2, Fig. 3 as can be seen, in being attached to, breathing sheet 3 on the cover outer wall pneumostome 5 is covered, breathing sheet cover 6 is positioned on the breathing sheet 3, breathe sheet cover 6, breathe sheet 3 and cylinder head cover inner cover 1 is provided with attachment hole, by rivet 7 or bolt, the nut mode will breathe sheet cover 6 and breathing sheet 3 is fixed on the cylinder head cover inner cover 1 together.Can open flexibly and self-return in order to breathe sheet under positive pressure, the present invention will breathe sheet 3 and change spring steel plate into by epoxy glass cloth laminated board.Breathing sheet cover 6 one ends and upwarp to form to make breathe the spacing angle d that sheet can only be swung in this angular range, this spacing angle α is generally 10 ° ± 30 ', breathe sheet cover 6 the other ends and have end face the flue gas leading guiding, see Fig. 3.
The present invention has solved fundamentally that the breathing sheet is bonding, the clamping stagnation problem, has stopped fully often to open, normally closed phenomenon, breathes the sheet reliable operation, has guaranteed that air-flow is unobstructed, has reached the purpose of balance crankshaft case internal air pressure effectively.
Claims (1)
1, a kind of general gasoline engine cylinder head cover, comprise cylinder head cover inner cover (1), cylinder head cover outer cover (2), breathe sheet cover (6) and breathe sheet (3), be formed with between interior cover outer wall and outer cover inwall and breathe chamber (4), breathe sheet cover (6) and breathe sheet (3) and be positioned at breathing chamber (4), on cylinder head cover inner cover (1), be provided with a pneumostome (5) that crankcase is communicated with the breathing chamber, it is characterized in that: described breathing sheet (3) is a spring steel plate, in being attached to, breathing sheet (3) on the cover outer wall pneumostome (5) is covered, breathing sheet cover (6) is positioned at breathing sheet (3) and upward and with breathing sheet (3) is fixed on together on the cylinder head cover inner cover (1), breathe sheet cover (6) one ends and upwarp formation can only be swung the breathing sheet in this angular range spacing angle, breathe sheet cover (6) the other end and have the end face that flue gas leading is led.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610095220 CN1952358A (en) | 2006-11-20 | 2006-11-20 | General gasoline engine cylinder head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610095220 CN1952358A (en) | 2006-11-20 | 2006-11-20 | General gasoline engine cylinder head cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1952358A true CN1952358A (en) | 2007-04-25 |
Family
ID=38058865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610095220 Pending CN1952358A (en) | 2006-11-20 | 2006-11-20 | General gasoline engine cylinder head cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1952358A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985892A (en) * | 2010-11-19 | 2011-03-16 | 隆鑫通用动力股份有限公司 | Gas-oil separation structure of engine |
| CN104265401A (en) * | 2014-09-24 | 2015-01-07 | 湖南省力宇燃气动力有限公司 | Two-way ventilation valve for crankcase of multi-cylinder internal combustion engine with intake system with throttle valve |
| CN104929730A (en) * | 2015-05-08 | 2015-09-23 | 江苏大学 | Diaphragm control and multistage labyrinth chamber type breather for single-cylinder vertical diesel |
| US11649904B2 (en) | 2021-03-05 | 2023-05-16 | Mann+Hummel Gmbh | Valve unit, filter head for a valve unit, and filter system |
-
2006
- 2006-11-20 CN CN 200610095220 patent/CN1952358A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985892A (en) * | 2010-11-19 | 2011-03-16 | 隆鑫通用动力股份有限公司 | Gas-oil separation structure of engine |
| CN104265401A (en) * | 2014-09-24 | 2015-01-07 | 湖南省力宇燃气动力有限公司 | Two-way ventilation valve for crankcase of multi-cylinder internal combustion engine with intake system with throttle valve |
| CN104929730A (en) * | 2015-05-08 | 2015-09-23 | 江苏大学 | Diaphragm control and multistage labyrinth chamber type breather for single-cylinder vertical diesel |
| US11649904B2 (en) | 2021-03-05 | 2023-05-16 | Mann+Hummel Gmbh | Valve unit, filter head for a valve unit, and filter system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |