CN102312748A - Cylinder cover of diesel engine - Google Patents
Cylinder cover of diesel engine Download PDFInfo
- Publication number
- CN102312748A CN102312748A CN2010102230565A CN201010223056A CN102312748A CN 102312748 A CN102312748 A CN 102312748A CN 2010102230565 A CN2010102230565 A CN 2010102230565A CN 201010223056 A CN201010223056 A CN 201010223056A CN 102312748 A CN102312748 A CN 102312748A
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- cylinder cover
- cylinder head
- oil
- cylinder
- oil sprayer
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a cylinder cover of a diesel engine, which comprises a cylinder cover body, wherein oil sprayer mounting holes which are vertical to a bottom plate of the cylinder cover are arranged in the cylinder cover body and are over against the center of a cylinder hole; the oil sprayer mounting holes are integrally cast and molded with the cylinder cover and used for direct mounting of an oil sprayer; and the outer walls of the oil sprayer mounting holes are connected with a top plate and the bottom plate of the cylinder cover to form a support to the bottom plate of the cylinder cover. A diesel return hole is arranged in the cylinder cover and vertically communicated with all the oil spray mounting holes, and the diesel return hole is a through hole which penetrates through the front end and the rear end of the cylinder cover, and diesel stored in the oil sprayer mounting holes flow back to an oil spray pump through the diesel return hole; an air valve guide pipe which is used for mounting an air valve and an air valve oil seal is also arranged on the cylinder cover; and the air valve guide pipe and the cylinder cover are integrally cast and molded. According to the invention, through the design of integrated casting and molding, the integration degree of the cylinder cover structure is effectively improved.
Description
Technical field
The present invention relates to a kind of cylinder cover for diesel engine, particularly a kind of four valve commercial car cylinder cover for diesel engine.
Background technique
At present; Domestic traditional four-valve diesel engine generally adopts increase oil sprayer copper sheathing that oil sprayer is installed; The purpose that increases copper sheathing is to be used to support mounting hole of oil sprayer, when avoiding the motor detonation pressure because cylinder head plate pressurized and form depression or distortion at the mounting hole of oil sprayer place, break.But adopt the air cylinder head structure intensity of oil sprayer copper sheathing lower,, can not support powerful pressure of explosion, the cylinder cap distortion very easily takes place, break, towards accidents such as cylinder pads to the impact that cylinder head plate forms along with diesel engine power, the emissions requirements of continuous upgrading.
In addition, traditional diesel oil oil return also needs to come oil return through the air inlet sidetracking inclined hole at each cylinder, and inclined hole connects high pressure connecting tube separately again; Oil pipe through separately is aggregated into house steward at last; Thereby be back to Injection Pump, each cylinder all needs rat holing backflow diesel oil, and the machining difficulty is big; And each cylinder all need adopt said structure to carry out oil return, and technology is comparatively complicated.
Also have; Valve guide bushing on the cylinder head is used to install valve, valve oil seal; The installation of traditional valve guide bushing need be offered guide hole on cylinder head, the interference fit through valve guide bushing and guide hole realizes the installation of valve guide bushing, and the integrated degree of valve guide bushing and cylinder head is low.
The integrated design degree of above-mentioned cylinder cap structure of the prior art is low, has increased the engine part kind, has increased the motor cost, has reduced cylinder cap intensity, rigidity.
Summary of the invention
The present invention is in order to overcome defective in the above-mentioned existing technology, through the design of casting integrated moulding, has improved the integrated degree of air cylinder head structure, has reduced the kind of engine part, has effectively improved the cylinder cap strength and stiffness.
Cylinder cover for diesel engine of the present invention; Comprise the cylinder head body, be provided with the mounting hole of oil sprayer of vertical cylinder cap backplane in the cylinder head body, mounting hole of oil sprayer is over against the cylinder-bore center; Mounting hole of oil sprayer and the moulding of cylinder head integrally casting are used for the direct installation of oil sprayer; The mounting hole of oil sprayer outer wall connects the top board and the base plate of cylinder head, forms the support to cylinder head plate.
Wherein, establish the diesel oil spill port in the cylinder head, the diesel oil spill port connects with each mounting hole of oil sprayer is vertical, and the diesel oil spill port is the through hole that runs through the cylinder head front and back ends, and the diesel oil that is stored in the mounting hole of oil sprayer is back to Injection Pump through the diesel oil spill port; The through-hole structure of diesel oil spill port adopts two ends mach technological forming respectively.
Wherein, also be provided with the valve guide bushing that is used to install valve and valve oil seal on the cylinder head, valve guide bushing and the moulding of cylinder head integrally casting.
Compared with prior art, the present invention has following beneficial effect:
Can not produce distortion when 1, mounting hole of oil sprayer and the moulding of the cylinder head integrally casting corresponding position that can make the cylinder head base plate is in the face of powerful motor detonation pressure, fracture phenomena has been saved the cost of oil sprayer copper sheathing simultaneously;
2, it is ingenious to connect the diesel oil spill port layout of each mounting hole of oil sprayer, processes simple and easyly, and practices thrift cost, has avoided the labyrinth that generally adopts in the existing technology;
3, valve guide bushing and the moulding of cylinder head integrally casting are simple and easy, attractive in appearance, and save cost.
Description of drawings
Fig. 1 is the partial sectional view (show in the cylinder head mounting hole of oil sprayer and the relative position relation of diesel oil spill port and the position of valve guide bushing) of cylinder cover for diesel engine of the present invention.
In conjunction with the accompanying drawing following reference character of mark above that:
1-cylinder head base plate, 2-cylinder-bore center, 3-valve guide bushing, 4-diesel oil spill port, 5-mounting hole of oil sprayer, 6-cylinder head top board, 7-mounting hole of oil sprayer outer wall.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention does not receive the restriction of embodiment.
As shown in Figure 1; Four-valve diesel engine cylinder head of of the present invention comprises the cylinder head body; Be provided with the mounting hole of oil sprayer 5 that vertical cylinder head plate 1 is arranged in the cylinder head body, mounting hole of oil sprayer 5 is over against cylinder-bore center 2, and mounting hole of oil sprayer 5 is the integrally casting moulding with the cylinder head body; Like this oil sprayer can be installed directly, and need not to use oil sprayer of the prior art that copper sheathing is installed.Mounting hole of oil sprayer outer wall 7 connects cylinder head top board 6, cylinder head base plate 1, and cylinder head base plate 1 is formed strong support.The mach diesel oil spill port 4 vertical perforations of each mounting hole of oil sprayer 5 and a straight-through cylinder cap front and back ends in the cylinder head, the diesel oil that are stored in the mounting hole of oil sprayer 5 directly flow back to Injection Pump through diesel oil spill port 4.In addition, the valve guide bushing 3 on the cylinder head directly casts out on cylinder head, can obtain installing the valve guide bushing 3 of valve, valve oil seal through machining.
After adopting the above-mentioned mounting hole of oil sprayer outer wall 7 that directly casts out (promptly with the moulding of cylinder head integrally casting); Because this outer wall 7 connects cylinder head top board 6, base plate 1; And oil injector hole 5 is positioned at cylinder-bore center 2, and then 7 pairs of cylinder head plates of this outer wall 1 produce powerful support, can not produce distortion when making cylinder head base plate 1 face powerful motor detonation pressure; Fracture phenomena has also saved the cost that designs the oil sprayer copper sheathing simultaneously.
For easy to process; The diesel oil spill port 4 that connects each mounting hole of oil sprayer 5 can adopt the mach respectively mode in rear and front end to carry out; Layout is ingenious, processes simple and easyly, and practices thrift cost; Avoided the air inlet sidetracking inclined hole that generally adopts in the existing technology, connect the labyrinth of high pressure return tube again at each cylinder.
Valve guide bushing 3 directly casts out (promptly with the moulding of cylinder head integrally casting) on cylinder head, simple and easy, attractive in appearance, and has saved the cost of independent design valve guide bushing 3.
More than disclosedly be merely a specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (4)
1. cylinder cover for diesel engine; Comprise the cylinder head body; Be provided with the mounting hole of oil sprayer of vertical cylinder cap backplane in the cylinder head body, mounting hole of oil sprayer is characterized in that over against the cylinder-bore center; Said mounting hole of oil sprayer and the moulding of cylinder head integrally casting are used for the direct installation of oil sprayer; The mounting hole of oil sprayer outer wall connects the top board and the base plate of cylinder head, forms the support to cylinder head plate.
2. cylinder cover for diesel engine according to claim 1; It is characterized in that; Establish the diesel oil spill port in the said cylinder head; The diesel oil spill port connects with each mounting hole of oil sprayer is vertical, and said diesel oil spill port is the through hole that runs through the cylinder head front and back ends, and the diesel oil that is stored in the mounting hole of oil sprayer is back to Injection Pump through said diesel oil spill port.
3. cylinder cover for diesel engine according to claim 2 is characterized in that, the through-hole structure of said diesel oil spill port adopts two ends mach technological forming respectively.
4. according to any described cylinder cover for diesel engine in the claim 1 to 3, it is characterized in that, also be provided with the valve guide bushing that is used to install valve and valve oil seal on the said cylinder head, said valve guide bushing and the moulding of cylinder head integrally casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102230565A CN102312748A (en) | 2010-07-07 | 2010-07-07 | Cylinder cover of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102230565A CN102312748A (en) | 2010-07-07 | 2010-07-07 | Cylinder cover of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102312748A true CN102312748A (en) | 2012-01-11 |
Family
ID=45426242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102230565A Pending CN102312748A (en) | 2010-07-07 | 2010-07-07 | Cylinder cover of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102312748A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332810A (en) * | 2015-12-04 | 2016-02-17 | 广西玉柴机器股份有限公司 | Manufacturing method of guide tube inner holes of cylinder head and cylinder head |
| CN110552808A (en) * | 2019-09-18 | 2019-12-10 | 广西玉柴机器股份有限公司 | Cylinder cover structure |
| CN110566361A (en) * | 2019-10-14 | 2019-12-13 | 中船动力研究院有限公司 | diesel engine cylinder cover and diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040211394A1 (en) * | 2003-04-24 | 2004-10-28 | Yager James H. | Fuel return passage for an internal combustion engine |
| CN201100180Y (en) * | 2007-10-15 | 2008-08-13 | 山东华源莱动内燃机有限公司 | A four-gate jar cover for small jar diameter diesel |
| CN101413459A (en) * | 2008-11-12 | 2009-04-22 | 无锡动力工程股份有限公司 | High strength cylinder cap with double-layer water stream channel |
| CN101660475A (en) * | 2009-07-07 | 2010-03-03 | 无锡动力工程股份有限公司 | Improved structure of mounting hole of oil sprayer |
| CN201705486U (en) * | 2010-07-07 | 2011-01-12 | 广西玉柴机器股份有限公司 | Cylinder head of diesel engine |
-
2010
- 2010-07-07 CN CN2010102230565A patent/CN102312748A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040211394A1 (en) * | 2003-04-24 | 2004-10-28 | Yager James H. | Fuel return passage for an internal combustion engine |
| CN201100180Y (en) * | 2007-10-15 | 2008-08-13 | 山东华源莱动内燃机有限公司 | A four-gate jar cover for small jar diameter diesel |
| CN101413459A (en) * | 2008-11-12 | 2009-04-22 | 无锡动力工程股份有限公司 | High strength cylinder cap with double-layer water stream channel |
| CN101660475A (en) * | 2009-07-07 | 2010-03-03 | 无锡动力工程股份有限公司 | Improved structure of mounting hole of oil sprayer |
| CN201705486U (en) * | 2010-07-07 | 2011-01-12 | 广西玉柴机器股份有限公司 | Cylinder head of diesel engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332810A (en) * | 2015-12-04 | 2016-02-17 | 广西玉柴机器股份有限公司 | Manufacturing method of guide tube inner holes of cylinder head and cylinder head |
| CN110552808A (en) * | 2019-09-18 | 2019-12-10 | 广西玉柴机器股份有限公司 | Cylinder cover structure |
| CN110566361A (en) * | 2019-10-14 | 2019-12-13 | 中船动力研究院有限公司 | diesel engine cylinder cover and diesel engine |
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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: 20120111 |