CN206468455U - Diesel engine cylinder head cover - Google Patents
Diesel engine cylinder head cover Download PDFInfo
- Publication number
- CN206468455U CN206468455U CN201621351977.9U CN201621351977U CN206468455U CN 206468455 U CN206468455 U CN 206468455U CN 201621351977 U CN201621351977 U CN 201621351977U CN 206468455 U CN206468455 U CN 206468455U
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- CN
- China
- Prior art keywords
- cylinder head
- head cover
- cover body
- inclined hole
- outlet
- 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.)
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model is related to a kind of diesel engine cylinder head cover, cylinder head cover body including die cast, the cylinder head cover body is located in cylinder head and is fixedly connected by the mounting flange of its bottom with cylinder head, the cylinder head cover body is provided with mounting hole of oil sprayer, oil filler, air inlet and outlet inclined hole, wherein, oil filler and the outlet inclined hole is located at the top of cylinder head cover body, and the air inlet is located at the back of cylinder head cover body；The inner side of the cylinder head cover body is provided with respirator installation cavity, and the respirator installation cavity is located at the lower section of outlet inclined hole and connected with outlet inclined hole.Oil gas of the present utility model enters outlet inclined hole from the top of respirator installation cavity, then overflows into air at the gas outlet of outlet inclined hole, it is to avoid vaporization mist of oil is burned into cylinder by air intake duct, and then reduces the PM particles in waste gas discharge.
Description
Technical field
The utility model is related to diesel engine part technical field, and in particular to a kind of diesel engine cylinder head cover.
Background technology
Valve mechanism cover is the case covered on engine cylinder-body, and its most basic function is to cover and blanket gas cylinder cap, will
Machine oil is maintained at internal, while by contaminants such as dirt and moistures in outer.Second function of valve mechanism cover is by machine oil
With air insulated, mist of oil can be formed in the operation process of engine, the colder inner surface of valve mechanism cover assembles collection mist of oil, makes machine
Oil cooling coalescence backs downward into machine oil shell.In addition, valve mechanism cover also bears the responsibility of crankcase ventilation, when piston is moved in the cylinder
When, engine interior meeting compact pressure, if ignored, this pressure can reveal each seal, cause engine efficiency
Reduction, in order to reduce such case, existing valve mechanism cover be with the respirator outlet in a pipe connection valve mechanism cover with
Air intake duct, so as to ventilation, but after diesel engine runs certain time, with the abrasion of piston ring and cylinder, crankcase
Interior pressure can further increase, and machine oil also can more and more higher, the machine being so vaporized with the ratio of the rise vaporization of temperature
Oil is inhaled into air intake duct by respirator, and then also more and more into the possibility shape of gas in-cylinder combustion, and this is easy for causing to give up
The ratio regular meeting of PM particles is significantly increased in gas discharge.Therefore, the structure of existing valve mechanism cover is improved, vaporization mist of oil is reduced and passes through
Air intake duct enters cylinder, and then reduces the PM particles in waste gas discharge, it appears particularly important.
Utility model content
To solve the above problems, the purpose of this utility model is to provide a kind of diesel engine cylinder head cover, compact conformation is closed
Reason, air-tightness is good, it is to avoid vaporization mist of oil is burned into cylinder by air intake duct, and then reduces the PM particles in waste gas discharge.
To achieve the above object, the technical scheme that the utility model is taken is：A kind of diesel engine cylinder head cover, including die casting
The cylinder head cover body of shaping, the cylinder head cover body is located at the mounting flange and cylinder in cylinder head and passing through its bottom
Lid is fixedly connected, and the cylinder head cover body is provided with mounting hole of oil sprayer, oil filler, air inlet and outlet inclined hole, wherein,
The mounting hole of oil sprayer is located at the up big and down small shoulder hole of valve mechanism cover side, including the peace positioned at upside
Fill deep gouge and the sleeve nut positioned at downside perforates, high-pressure oil pipe sealing ring coordinates with sleeve nut's perforated interval, and with
The cascaded surface end face seal of the shoulder hole；
Oil filler and the outlet inclined hole is located at the top of cylinder head cover body, and the air inlet is located at valve mechanism cover sheet
The back of body；
The inner side of the cylinder head cover body is provided with respirator installation cavity, and the respirator installation cavity is located at outlet inclined hole
Lower section is simultaneously connected with outlet inclined hole.
Wherein, gasket seal locating slot of the lower surface of the mounting flange provided with annular.
Further, the upper end of the outlet inclined hole is provided with gas outlet, and the internal diameter of the gas outlet is less than the interior of outlet inclined hole
Footpath.
Wherein, the top of the cylinder head cover body is provided with the connector for being used for connecting diesel engine miscellaneous part.
Preferably, the fit clearance between the high-pressure oil pipe sealing ring and sleeve nut's perforation is 0.5~1mm.
Compared with prior art, the utility model has the advantages that：Oil gas of the present utility model is pacified from respirator
The top behaveing affectedly enters outlet inclined hole, then overflows into air at the gas outlet of outlet inclined hole, it is to avoid vaporization mist of oil is by entering
Air flue is burned into cylinder, and then reduces the PM particles in waste gas discharge.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment one；
Fig. 2 is the sectional view of embodiment one.
Description of reference numerals：1st, cylinder head cover body；2nd, mounting flange；3rd, mounting hole of oil sprayer；The 30th, deep gouge is installed；31、
Sleeve nut perforates；4th, oil filler；5th, air inlet；6th, outlet inclined hole；60th, gas outlet；7th, respirator installation cavity；8th, connect
Part.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.
Refer to shown in Figure of description 1 and accompanying drawing 2, the utility model is a kind of diesel engine cylinder head cover, including die casting
The cylinder head cover body 1 of shaping, the cylinder head cover body 1 be located at mounting flange 2 in cylinder head and by its bottom with
Cylinder head is fixedly connected, gasket seal locating slot 10 of the lower surface provided with annular of the mounting flange 2.
The cylinder head cover body 1 is provided with mounting hole of oil sprayer 3, oil filler 4, air inlet 5 and outlet inclined hole 6, its
In, the mounting hole of oil sprayer 3 is the up big and down small shoulder hole located at valve mechanism cover side, including the installation positioned at upside is sunk
Groove 30 and sleeve nut's perforation 31 positioned at downside, high-pressure oil pipe sealing ring and sleeve nut perforation 31 are between 0.5mm
Gap coordinate, and with the end face seal of cascaded surface 32 of the shoulder hole.
By said structure, when the utility model is assembled with fuel injector, fuel injector is arranged in valve mechanism cover, is its fuel feeding
High-pressure oil pipe worn and be installed in mounting hole of oil sprayer by high-pressure oil pipe sleeve nut, high-pressure oil pipe sealing ring is set in height
On the outside of pressuring oil pipe sleeve nut, by high-pressure oil pipe, sleeve nut is pressed in mounting hole of oil sprayer, makes itself and shoulder hole
Cascaded surface compress, to realize the end face seal of high-pressure oil pipe sleeve nut and mounting hole of oil sprayer, improve high-pressure oil pipe
Sealing reliability.
The oil filler 4 and outlet inclined hole 6 are located at the top of cylinder head cover body 1, and the air inlet 5 is located at cylinder head
The back of cover body 1.
The inner side of the cylinder head cover body 1 is provided with respirator installation cavity 7, and it is oblique that the respirator installation cavity 7 is located at outlet
The lower section in hole 6 is simultaneously connected with outlet inclined hole 6.
The upper end of the outlet inclined hole 6 is provided with gas outlet 60, and the internal diameter of the gas outlet 60 is less than the interior of outlet inclined hole 6
Footpath.
The top of the cylinder head cover body 1 is additionally provided with the connector 8 for connecting diesel engine miscellaneous part.
Operation principle of the present utility model is：Oil gas in valve mechanism cover enters outlet inclined hole at the top of respirator, from going out
Air is overflowed at the gas outlet of gas inclined hole, because the internal diameter of gas outlet is smaller than the internal diameter of outlet inclined hole, position is higher, oil
Gas still necessarily can be stopped and be separated before spilling, and most of gas directly overflows, and a small amount of oil droplet can be obstructed from outlet inclined hole
Flow back into respirator, it is to avoid vaporization mist of oil is burned into cylinder by air intake duct, and then reduce the PM in waste gas discharge
Particle.
Embodiment above is only the preferred embodiment of this creation, all in this wound not to limit this creation
Any modification, equivalent substitution and improvements for being done etc. within the spirit and principle of work, should be included in this creation protection domain it
It is interior.
Claims (5)
1. a kind of diesel engine cylinder head cover, it is characterised in that the cylinder head cover body (1) including die cast, the cylinder head
Cover body (1) is located in cylinder head and is fixedly connected by the mounting flange (2) of its bottom with cylinder head, the valve mechanism cover
Body (1) is provided with mounting hole of oil sprayer (3), oil filler (4), air inlet (5) and outlet inclined hole (6), wherein,
The mounting hole of oil sprayer (3) is located at the up big and down small shoulder hole of valve mechanism cover side, including the peace positioned at upside
Fill deep gouge (30) and the sleeve nut positioned at downside perforates (31), between high-pressure oil pipe sealing ring and sleeve nut perforation (31)
Gap coordinate, and with cascaded surface (32) end face seal of the shoulder hole；
The oil filler (4) and outlet inclined hole (6) are located at the top of cylinder head cover body (1), and the air inlet (5) is located at gas
The back of cylinder cap cover body (1)；
The inner side of the cylinder head cover body (1) is provided with respirator installation cavity (7), and the respirator installation cavity (7) is located at outlet
The lower section of inclined hole (6) is simultaneously connected with outlet inclined hole (6).
2. diesel engine cylinder head cover according to claim 1, it is characterised in that on the lower surface of the mounting flange (2)
Gasket seal locating slot (10) provided with annular.
3. diesel engine cylinder head cover according to claim 1, it is characterised in that the upper end of the outlet inclined hole (6) is provided with
Gas outlet (60), the internal diameter of the gas outlet (60) is less than the internal diameter of outlet inclined hole (6).
4. diesel engine cylinder head cover according to claim 1, it is characterised in that the top of the cylinder head cover body (1)
Provided with the connector (8) for connecting diesel engine miscellaneous part.
5. diesel engine cylinder head cover according to claim 1, it is characterised in that the high-pressure oil pipe sealing ring and sleeve spiral shell
Fit clearance between mother's perforation (31) is 0.5~1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621351977.9U CN206468455U (en) | 2016-12-10 | 2016-12-10 | Diesel engine cylinder head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621351977.9U CN206468455U (en) | 2016-12-10 | 2016-12-10 | Diesel engine cylinder head cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206468455U true CN206468455U (en) | 2017-09-05 |
Family
ID=59710681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621351977.9U Active CN206468455U (en) | 2016-12-10 | 2016-12-10 | Diesel engine cylinder head cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206468455U (en) |
-
2016
- 2016-12-10 CN CN201621351977.9U patent/CN206468455U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |