CN103410630A - Diesel engine cylinder head cover - Google Patents
Diesel engine cylinder head cover Download PDFInfo
- Publication number
- CN103410630A CN103410630A CN2013102810742A CN201310281074A CN103410630A CN 103410630 A CN103410630 A CN 103410630A CN 2013102810742 A CN2013102810742 A CN 2013102810742A CN 201310281074 A CN201310281074 A CN 201310281074A CN 103410630 A CN103410630 A CN 103410630A
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- Prior art keywords
- cylinder head
- head cover
- hole
- valve mechanism
- diesel engine
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- 238000009434 installation Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 abstract 3
- 239000003921 oil Substances 0.000 description 55
- 238000007789 sealing Methods 0.000 description 22
- 230000013011 mating Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a diesel engine cylinder head cover. The diesel engine cylinder head cover comprises a cylinder head cover body, an oil sprayer installation through hole and a cylinder head cover gasket seal positioning groove, wherein the cylinder head cover body is arranged on a cylinder head in a covering mode through an installation flange at the bottom of the cylinder head cover body; the oil sprayer installation through hole is of a big-end-up stepped hole structure and comprises an upper installation countersunk groove and a lower sleeve nut penetrating hole, and a high-pressure oil pipe seal ring is in clearance fit with the sleeve nut penetrating hole and forms end face seal with the connection stepped face of the installation countersunk groove and the sleeve nut penetrating hole; the cylinder head cover gasket seal positioning groove is formed in the face of the installation flange of the cylinder head cover body. The diesel engine cylinder head cover is simple and reasonable in structure; due to the fact that radial close fit seal between a high-pressure oil pipe sleeve nut and the oil sprayer installation through hole is improved to end face seal, processing and assembling requirements are lowered, and seal reliability is improved.
Description
Technical field
The present invention relates to engine art, particularly a kind of diesel engine cylinder head cover.
Background technique
Valve mechanism cover is in order to protect the cylinder head inner body that the part that damages and prevent oil and gas leakage occurs to pollute.Existing oil sprayer high-pressure oil pipe is installed in through hole by the oil sprayer that the high-pressure oil pipe threaded bush is located in valve mechanism cover, the high-pressure oil pipe seal ring is set in the high-pressure oil pipe threaded bush outside, itself and oil sprayer are installed between through hole and are adopted radially snug fit sealing, the sealing mode requires high to the assembling coaxality between valve mechanism cover and seal ring, the assembling difficulty, slightly have deviation the oil impregnate phenomenon just to occur, and valve mechanism cover can not fit tightly with seal ring in vibration environment, makes engine oil leakage.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, provides a kind of simple and reasonable, and oil sprayer is installed the diesel engine cylinder head cover that adopts the end face seal of Spielpassung between through hole and high-pressure oil pipe seal ring.
For achieving the above object, according to the invention provides a kind of diesel engine cylinder head cover, comprising:
The valve mechanism cover body, be located on cylinder head by its bottom mounting flange;
Oil sprayer is installed through hole, it is up big and down small shoulder hole structure, comprise: be positioned at the installation deep gouge of upside and be positioned at the threaded bush perforation of downside, high-pressure oil pipe seal ring and the threaded bush Spielpassung of boring a hole, and with install that deep gouge and threaded bush bore a hole be connected the ladder surface end face seal;
Valve mechanism cover gasket seal locating slot, it is opened on the mounting flange face of valve mechanism cover body.
In technique scheme, threaded bush's perforation is (1～1.5) mm with the matching gap of high-pressure oil pipe seal ring.
In technique scheme, the degree of depth of valve mechanism cover gasket seal locating slot is 4.5 ± 0.1mm, and wide is 3.8 (+0.25,0) mm.
In technique scheme, oil sprayer is installed the upper left side that through hole is opened in the valve mechanism cover body.
Compared with prior art, the present invention has following beneficial effect: diesel engine cylinder head cover is simple and reasonable, by the radially snug fit seal en-hancement by high-pressure oil pipe threaded bush and oil sprayer installation through hole, be end face seal, reduced the processing and assembling requirement, and improved sealing reliability.Valve mechanism cover gasket seal locating slot is set in addition on the flange mating face that valve mechanism cover coordinates with cylinder head, has improved the sealing reliability that valve mechanism cover coordinates with cylinder head.
The accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of diesel engine cylinder head cover of the present invention;
Fig. 2 is the assembly structure schematic diagram of diesel engine cylinder head cover of the present invention;
Description of reference numerals:
1-valve mechanism cover body, the 11-oil sprayer is installed through hole, and 12-seals locating slot, 2-oil sprayer, 21-high-pressure oil pipe threaded bush, 22-high-pressure oil pipe seal ring, 3-valve mechanism cover pad, 4-cylinder head.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subjected to the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, " left side ", " right side ", " front " and " reverse side " all take the direction shown in each figure and be benchmark, these words that are used for limiting direction are only for convenience of explanation, do not represent the restriction to the concrete technological scheme of the present invention.
Diesel engine cylinder head cover of the present invention is simple and reasonable, is end face seal by the radially snug fit seal en-hancement by high-pressure oil pipe threaded bush and oil sprayer installation through hole, has reduced the processing and assembling requirement, and has improved sealing reliability.Valve mechanism cover gasket seal locating slot is set in addition on the flange mating face that valve mechanism cover coordinates with cylinder head, has improved the sealing reliability that valve mechanism cover coordinates with cylinder head.
As shown in Figure 1, the concrete structure of this diesel engine cylinder head cover comprises: valve mechanism cover body 1, and the oil sprayer be opened on this valve mechanism cover body 1 is installed through hole 11 and sealing locating slot 12, wherein, oil sprayer is installed the upper left side that through hole 11 is opened in valve mechanism cover body 1, for by the high-pressure oil pipe threaded bush, wearing the oil sprayer high-pressure oil pipe, and keep high-pressure oil pipe threaded bush and oil sprayer that through hole 11 sealings are installed by the high-pressure oil pipe seal ring.Sealing locating slot 12 is opened on the flange mating face that valve mechanism cover body 1 coordinates with cylinder head, for fixed air cylinder head cover pad, thereby guaranteed valve mechanism cover and valve mechanism cover gasket seal, and be conducive to the convenient valve mechanism cover pad of installing of the producer, passed through efficiency of assembling.
It is up big and down small shoulder hole structure that oil sprayer is installed through hole 11, comprise: the installation deep gouge and the threaded bush's perforation that is positioned at downside that are positioned at upside, wherein, threaded bush's perforation is (1～1.5) mm with the matching gap of high-pressure oil pipe seal ring, eliminated the oil sprayer of high-pressure oil pipe seal ring and valve mechanism cover the strict coaxality requirement of through hole 11 has been installed, be beneficial to the producer and install; And the high-pressure oil pipe threaded bush will be laid in oil sprayer and the high-pressure oil pipe seal ring of through hole 11 upsides installation deep gouges will be installed to the ladder surface compression that deep gouge and threaded bush's perforation are installed, realized the end face seal of high-pressure oil pipe threaded bush and oil sprayer installation through hole 11, made the high-pressure oil pipe sealing more reliable.
Sealing locating slot 12 is opened on the flange mating face that valve mechanism cover body 1 coordinates with cylinder head, its degree of depth is 4.5 ± 0.1mm, wide is 3.8 (+0.25,0) mm, during assembling, the valve mechanism cover pad coordinates rear formation certain compressibility and fill factor with sealing locating slot 12, thereby has guaranteed valve mechanism cover and valve mechanism cover gasket seal, has improved the sealing reliability that valve mechanism cover body 1 coordinates with cylinder head.In addition, design sealing locating slot 12 on valve mechanism cover, be conducive to the convenient valve mechanism cover pad of installing of the producer.
As shown in Figure 2, during assembling, oil sprayer 2 is arranged in valve mechanism cover, for the high-pressure oil pipe of its fuel feeding wears and is installed to oil sprayer and installs in through hole 11 by high-pressure oil pipe threaded bush 21, high-pressure oil pipe seal ring 22 is set in high-pressure oil pipe threaded bush 21 outsides, just it is pressed in oil sprayer installation through hole 11 by the high-pressure oil pipe threaded bush, make itself and oil sprayer that the installation deep gouge of through hole 11 upsides and the ladder surface compression of threaded bush's perforation are installed, to realize high-pressure oil pipe threaded bush and oil sprayer, the end face seal of through hole 11 is installed, improved the sealing reliability of high-pressure oil pipe.
In addition, valve mechanism cover pad 3 is arranged in sealing locating slot 12, when valve mechanism cover body 1 is assembled on cylinder head 4, valve mechanism cover pad 3 coordinates rear form certain compressibility and fill factor with sealing locating slot 12, thereby guaranteed valve mechanism cover body 1 and 3 sealings of valve mechanism cover pad, improved the sealing reliability that valve mechanism cover body 1 coordinates with cylinder head 4.In addition, design sealing locating slot 12 on valve mechanism cover, be conducive to the convenient valve mechanism cover pad of installing of the producer.
To sum up, this diesel engine cylinder head cover is simple and reasonable, is end face seal by the radially snug fit seal en-hancement by high-pressure oil pipe threaded bush and oil sprayer installation through hole, has reduced the processing and assembling requirement, and has improved sealing reliability.Valve mechanism cover gasket seal locating slot is set in addition on the flange mating face that valve mechanism cover coordinates with cylinder head, has improved the sealing reliability that valve mechanism cover coordinates with cylinder head.
Above disclosed be only several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (4)
1. a diesel engine cylinder head cover, is characterized in that, comprising:
The valve mechanism cover body, be located on cylinder head by its bottom mounting flange;
Oil sprayer is installed through hole, it is up big and down small shoulder hole structure, comprise: the installation deep gouge and the threaded bush's perforation that is positioned at downside that are positioned at upside, high-pressure oil pipe seal ring and the described threaded bush Spielpassung of boring a hole, and with described installation deep gouge and threaded bush's perforation be connected the ladder surface end face seal;
Valve mechanism cover gasket seal locating slot, it is opened on the mounting flange face of described valve mechanism cover body.
2. diesel engine cylinder head cover according to claim 1 is characterized in that: described threaded bush's perforation is 1～1.5mm with the matching gap of high-pressure oil pipe seal ring.
3. diesel engine cylinder head cover according to claim 1, it is characterized in that: the degree of depth of described valve mechanism cover gasket seal locating slot is 4.5 ± 0.1mm, wide is 3.8 (+0.25,0) mm.
4. according to the described diesel engine cylinder head cover of any one in claims 1 to 3, it is characterized in that: described oil sprayer is installed the upper left side that through hole is opened in the valve mechanism cover body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310281074.2A CN103410630B (en) | 2013-07-05 | 2013-07-05 | Diesel engine cylinder head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310281074.2A CN103410630B (en) | 2013-07-05 | 2013-07-05 | Diesel engine cylinder head cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103410630A true CN103410630A (en) | 2013-11-27 |
| CN103410630B CN103410630B (en) | 2015-10-28 |
Family
ID=49603663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310281074.2A Active CN103410630B (en) | 2013-07-05 | 2013-07-05 | Diesel engine cylinder head cover |
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| Country | Link |
|---|---|
| CN (1) | CN103410630B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11173423A (en) * | 1997-12-10 | 1999-06-29 | Nok Corp | Sealing device |
| JPH11270437A (en) * | 1998-03-24 | 1999-10-05 | Kubota Corp | Fuel injection type engine |
| DE19820310A1 (en) * | 1998-05-07 | 1999-11-11 | Mann & Hummel Filter | Internal combustion engine cylinder head covers |
| CN2605392Y (en) * | 2003-03-17 | 2004-03-03 | 长安汽车（集团）有限责任公司 | Cylinder head casing for multi cylinder internal combustion engine |
| CN200978752Y (en) * | 2006-11-09 | 2007-11-21 | 广西玉柴机器股份有限公司 | Bushing structure of diesel cylinder lid |
| CN201273242Y (en) * | 2008-08-12 | 2009-07-15 | 广西玉柴机器股份有限公司 | Fastening structure of oil ejector |
| CN201925038U (en) * | 2010-12-31 | 2011-08-10 | 潍柴动力西港(潍坊)新能源发动机有限公司 | Cylinder head for gas engine |
| CN203362334U (en) * | 2013-07-05 | 2013-12-25 | 广西玉柴机器股份有限公司 | Cylinder head cover of diesel engine |
-
2013
- 2013-07-05 CN CN201310281074.2A patent/CN103410630B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11173423A (en) * | 1997-12-10 | 1999-06-29 | Nok Corp | Sealing device |
| JPH11270437A (en) * | 1998-03-24 | 1999-10-05 | Kubota Corp | Fuel injection type engine |
| DE19820310A1 (en) * | 1998-05-07 | 1999-11-11 | Mann & Hummel Filter | Internal combustion engine cylinder head covers |
| CN2605392Y (en) * | 2003-03-17 | 2004-03-03 | 长安汽车（集团）有限责任公司 | Cylinder head casing for multi cylinder internal combustion engine |
| CN200978752Y (en) * | 2006-11-09 | 2007-11-21 | 广西玉柴机器股份有限公司 | Bushing structure of diesel cylinder lid |
| CN201273242Y (en) * | 2008-08-12 | 2009-07-15 | 广西玉柴机器股份有限公司 | Fastening structure of oil ejector |
| CN201925038U (en) * | 2010-12-31 | 2011-08-10 | 潍柴动力西港(潍坊)新能源发动机有限公司 | Cylinder head for gas engine |
| CN203362334U (en) * | 2013-07-05 | 2013-12-25 | 广西玉柴机器股份有限公司 | Cylinder head cover of diesel engine |
Non-Patent Citations (1)
| Title |
|---|
| 王兆煖等: "既密封又降噪的新型缸盖罩壳设计", 《柴油机设计与制造》 * |
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| Publication number | Publication date |
|---|---|
| CN103410630B (en) | 2015-10-28 |
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