CN203009076U - Cover cap of cam shaft - Google Patents
Cover cap of cam shaft Download PDFInfo
- Publication number
- CN203009076U CN203009076U CN 201320004968 CN201320004968U CN203009076U CN 203009076 U CN203009076 U CN 203009076U CN 201320004968 CN201320004968 CN 201320004968 CN 201320004968 U CN201320004968 U CN 201320004968U CN 203009076 U CN203009076 U CN 203009076U
- Authority
- CN
- China
- Prior art keywords
- cover cap
- oil
- gas
- return opening
- cavity
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a cover cap of a cam shaft. A cavity through which oil gas circuitously flow is formed inside the cover cap; the cavity comprises a gas inlet, a gas outlet and a plurality of oil return openings facing downward; and an oil-gas separating device is arranged inside the cavity. The cover cap of the cam shaft is characterized in that an oil return pipe is arranged on each oil return opening between the oil-gas separating device and the gas outlet; and a one-way valve through which the oil flows outside is formed at the lower end of the oil return pipe. Compared with the prior art, the cover cap of the cam shaft has the beneficial effects that the cover cap with the one-way valve arranged on the oil return opening is designed, so that liquid oil can pass through the oil return openings while the oil gas cannot reversely enter the cover cap through the oil return openings. Therefore, the oil return opening is sealed in one way; and the defects of through hole-type oil return openings of the existing cover cap are solved.
Description
Technical field
The utility model relates to technical field of engines, relates in particular to a kind of camshaft cover cap.
Background technique
The camshaft cover cap is to be positioned to be used for the component of sealing air cylinder lid, valve cage and camshaft on crankcase, and simultaneously, cover cap also has the effect that reduces the noise that produces when valve mechanism runs up.When motor in the running, gas blowby will enter crankcase through the gap of piston and cylinder liner and the gap between valve guide bushing and pressurized machine bearing unavoidablely.These gases also contain the hydrocarbon that burning produces except containing a large amount of machine oil.Therefore, the camshaft cover cap not only has be used to the exhaust passageway of discharging above-mentioned oil-containing gases, and is provided for the gas and oil separating plant of Oil-gas Separation in this exhaust passageway.When engine operation, oil-containing gases is discharged from exhaust passageway, and enters the engine secondary burning by engine aspirating system; And got back in crankcase by return opening by the machine oil that gas and oil separating plant is separated.
in technical field of engines, very many for the research of gas and oil separating plant, the Oil-gas Separation form is varied, and mazy type, bumping type, vortex type etc. are arranged at present, and it is inadequate for the further investigation of return opening structure, the return opening form is a clear opening basically at present, there is following defective in the return opening of this clear opening form: return opening is not closed, oily cognition in crankcase is directly scurried out from this return opening, and be arranged on the rear portion of exhaust passageway due to return opening, therefore this part gas is not processed through Oil-gas Separation and will directly be entered engine aspirating system, cause the gas engine oil carrying quantity that enters engine aspirating system to increase, cause motor the burn oil phenomenon to occur, thereby cause associated components Carbon Deposit Phenomenon to occur, easily cause motor to break down.
Thus, obtain a kind ofly only can supply the unidirectional structure that flows back to crankcase of machine oil in the expectation of return opening place.In other technical field, this structure normally adopts one-way valve to realize, but general one-way valve only can be used for the fluid of same type, and for example the one-way valve two ends are liquid or are gas.Therefore a return opening side is that the gas opposite side is liquid, present one-way valve and be not suitable for return opening place in technical field of engines.
The model utility content
The utility model embodiment's purpose is for the structural shortcoming of prior art, proposes a kind of camshaft cover cap, by the return tube with one-way valve is set on return opening, has solved oil gas and has entered the problem of cover cap inner cavity by return opening.
In order to reach above-mentioned model utility purpose, a kind of camshaft cover cap that the utility model embodiment proposes is achieved through the following technical solutions:
A kind of camshaft cover cap, described cover cap is inner to be formed for the roundabout mobile cavity of oil gas, described cavity has suction port, air outlet and a plurality of return opening that Open Side Down, be provided with gas and oil separating plant in described cavity, it is characterized in that: be provided with return tube on the return opening between described gas and oil separating plant and air outlet, the lower end of this return tube is formed with the only one-way valve of fuel feeding outflow.
Described one-way valve is a diaphragm of being made by elastic material, is provided with a support of fixing the center of this diaphragm in the outlet end of described return tube, has at least one opening on described support, the end face of the described outlet end of outer rim compressing of described diaphragm.
Described diaphragm roughly is umbrella shape, by umbrella titled with and the umbrella handle that is fixed on this umbrella hat concave surface center consist of, the center of described support is provided with perforate, described umbrella handle fixedly is inserted in described perforate, the outer rim of described umbrella hat is oppressed the end face of described outlet end.
The quantity of described support upper shed is a plurality of, and those openings are around described carriage center Rotational Symmetry.
Compared with prior art, the beneficial effects of the utility model are: by designing the cover cap that one-way valve is installed on a kind of return opening, make return opening that liquid oil is passed through, and oil gas can not oppositely enter in cover cap by return opening, make thus return opening by unidirectional sealing, solved the deficiency of the passing hole type return opening of existing cover cap.
Description of drawings
By the description of its exemplary embodiment being carried out below in conjunction with accompanying drawing, the above-mentioned feature and advantage of the utility model will become apparent and easily understand.
Fig. 1 is the utility model embodiment cover cap sectional drawing;
Fig. 2 is the utility model embodiment cover structure schematic diagram;
Fig. 3 is the structural representation of the utility model embodiment cover cap when diaphragm is not installed;
Fig. 4 is the AA phase sectional view of Fig. 2;
Fig. 5 is the local enlarged diagram of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, so that technician's of the same trade understanding:
Shown in Fig. 1-5, a kind of camshaft cover cap is provided in the present embodiment 1, this cover cap comprises cover cap body 9, cover cap body 9 can be constituted by two or more component.The inner formation of this cover cap body 9 supplies the roundabout mobile cavity 16 of oil gas, and described cavity 16 has suction port 10, air outlet 15 and a plurality of return opening that Open Side Down.And also being provided with gas and oil separating plant 17 in cavity 16, gas and oil separating plant 17 comprises the mazy type pre-separate device of being located at suction port 10 places, be located at the crash panel at cavity middle part etc.And the pre-separate device place is provided with return opening 11, crash panel place and is provided with return opening 12, is used for should locating outside isolated oil return discharge cover cap.Separately have two return openings 13,14 be located at gas stream in cavity to the front portion, and between gas and oil separating plant 17 and air outlet 15.
In the ideal case, oil gas enters in cavity 16 from oil and gas import 10, and is progressively separated by gas and oil separating plant 17, and the machine oil of the liquid state that these progressively are separated is discharged by return opening 11,12,13,14, finally 15 discharges from the air outlet of gas.
And consider that oil gas enters the situation of cover cap cavity from return opening, need to be for the consideration of classifying of above-mentioned return opening: above-mentioned a plurality of return openings be along gas stream in cavity to distributing, return opening 11,12 be located at cavity flow to mid-rear portion, return opening 13,14 be located at gas stream in cavity to the front portion.Therefore when oil gas entered cavity 16 from these return openings, the oil gas of scurrying into cavity 16 from return opening 11,12 can be carried out separating treatment by gas and oil separating plant 17, for the impact of the oil-gas separation efficiency of cover cap and little; The oil gas that return opening 13,14 enters cavity 16 can not pass through gas and oil separating plant 17, but directly 15 discharges from the air outlet, has therefore affected greatly the oil gas separation of cover cap, causes the gas engine oil carrying quantity that enters engine aspirating system to increase.
For these reasons, be necessary to process to avoid oil gas to enter for return opening 13,14.Be achieved through the following technical solutions in the present embodiment:
Take return opening 13 as example, return opening 13 is provided with the return tube 1 that an inside is formed with cylindrical cavity 2, and the lower end of this return tube 1 is formed with the one-way valve that only flows out for oil return.In the present embodiment, this one-way valve is a diaphragm of being made by elastic material, and this diaphragm is used for this cylindrical cavity 2 of unidirectional blocking.
For fixing this diaphragm, be provided with a support 6 in the outlet end of return tube 1.Described support 6 is fixed on the inwall of return tube 1, and the center offers for the perforate 8 that diaphragm is installed.In addition, go back around opening 8 on support 6 and be provided with three openings 3, these three openings 3 are used for making support 6 both sides connections, for oil return around described perforate 8 Rotational Symmetries.
And described diaphragm roughly is umbrella shape, is made of umbrella hat 4 and the umbrella handle 7 that is fixed on this umbrella hat 4 concave surface centers.The end of umbrella handle 7 is provided with mushroom head, and when umbrella handle 7 fixedly being inserted in the perforate 8 at support 6 centers, this diaphragm namely is fixed on support 6.By the length of control umbrella handle 7 and the position of this support 6, can make the outlet end end face 5 of the outer rim compressing return tube 1 of umbrella hat 4, and umbrella hat 4 is in elastically-deformable state, and umbrella hat 4 consists of the annular seal structure with outlet end end face 5 thus, and the outlet end of return tube 1 is closed.
Return opening 14 structures are identical with return opening 13 structures, therefore repeat no more.
By such structure, after machine oil flows into cylindrical cavity 2 by return opening, drop on umbrella hat 4 by the opening 3 on support 6, when the machine oil weight of cylindrical cavity 2 interior accumulative totals is enough to overcome when being in the elastic force that elastically-deformable umbrella hat 4 provides, 4 distortion of compressing umbrella hat make it and outlet end end face 5 between no longer fit, can be considered one-way valve this moment and open, machine oil flows in crankcase, and owing to having machine oil between the umbrella hat 4 of this moment and outlet end end face 5, the oil gas in crankcase can't pass through one-way valve.And after cylindrical cavity 2 inner engine oils were released certain amount, the suffered gravity of residue machine oil was less than umbrella hat 4 elastic force that provide, and 4 resiliences of umbrella hat can be considered closed check valve, and the interior oil gas of crankcase this moment also can't pass through one-way valve.
Compared with prior art, the beneficial effects of the utility model are: by designing the cover cap that one-way valve is installed on a kind of return opening, make return opening that liquid oil is passed through, and oil gas can not oppositely enter in cover cap by return opening, make thus return opening by unidirectional sealing, solved the deficiency of the passing hole type return opening of existing cover cap.
Abovely be elaborated for invention intention of the present utility model and mode of execution by embodiment; but the utility model one of ordinary skill in the art be appreciated that; the above embodiment of the utility model is only one of preferred embodiment of the present utility model; be the length restriction; here can not all mode of executions of particularize; any enforcement that can embody the utility model claim technological scheme is all in protection domain of the present utility model.
It should be noted that; above content is in conjunction with concrete mode of execution further detailed description of the utility model; can not assert that embodiment of the present utility model only limits to this; under the guidance of above-described embodiment; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in protection domain of the present utility model.For example the gas and oil separating plant in the present embodiment is not limited only to this, and it is also to adopt other gas oil separation structure, the perhaps combination of multiple gas oil separation structure.Because gas and oil separating plant is those skilled in the art's technology of commonly seeing, therefore do not repeat them here.
Claims (4)
1. camshaft cover cap, described cover cap is inner to be formed for the roundabout mobile cavity of oil gas, described cavity has suction port, air outlet and a plurality of return opening that Open Side Down, be provided with gas and oil separating plant in described cavity, it is characterized in that: be provided with return tube on the return opening between described gas and oil separating plant and air outlet, the lower end of this return tube is formed with the only one-way valve of fuel feeding outflow.
2. a kind of camshaft cover cap according to claim 1, it is characterized in that: described one-way valve is a diaphragm of being made by elastic material, be provided with a support of fixing the center of this diaphragm in the outlet end of described return tube, has at least one opening on described support, the end face of the described outlet end of outer rim compressing of described diaphragm.
3. a kind of camshaft cover cap according to claim 2, it is characterized in that: described diaphragm roughly is umbrella shape, by umbrella titled with and the umbrella handle that is fixed on this umbrella hat concave surface center consist of, the center of described support is provided with perforate, described umbrella handle fixedly is inserted in described perforate, the end face of the described outlet end of outer rim compressing of described umbrella hat.
4. a kind of camshaft cover cap according to claim 3, it is characterized in that: the quantity of described support upper shed is a plurality of, and those openings are around described carriage center Rotational Symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004968 CN203009076U (en) | 2013-01-06 | 2013-01-06 | Cover cap of cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004968 CN203009076U (en) | 2013-01-06 | 2013-01-06 | Cover cap of cam shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009076U true CN203009076U (en) | 2013-06-19 |
Family
ID=48600681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320004968 Expired - Lifetime CN203009076U (en) | 2013-01-06 | 2013-01-06 | Cover cap of cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009076U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194489A (en) * | 2016-08-31 | 2016-12-07 | 美嘉帕拉斯特汽车零部件（上海）有限公司 | Camshaft cover cap |
| CN108952888A (en) * | 2018-09-06 | 2018-12-07 | 广西玉柴机器股份有限公司 | The oil-returning structure of oil and gas separating system built in diesel engine |
-
2013
- 2013-01-06 CN CN 201320004968 patent/CN203009076U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194489A (en) * | 2016-08-31 | 2016-12-07 | 美嘉帕拉斯特汽车零部件（上海）有限公司 | Camshaft cover cap |
| CN108952888A (en) * | 2018-09-06 | 2018-12-07 | 广西玉柴机器股份有限公司 | The oil-returning structure of oil and gas separating system built in diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203009005U (en) | One-way valve applied to oil-gas separating functional oil return port | |
| CN205714339U (en) | A kind of gs-oil separator | |
| CN205025530U (en) | Oil -gas separator of supercharged engine | |
| JP2015140679A (en) | oil separator | |
| JP2015140679A5 (en) | ||
| CN203009076U (en) | Cover cap of cam shaft | |
| US8844506B2 (en) | Positive crankcase ventilation system | |
| CN112459863A (en) | High-efficient oil-gas separation device | |
| US11015500B2 (en) | Blow-by gas oil separator | |
| CN109209559A (en) | A kind of filter net type oil-gas separating device of engine | |
| WO2020052660A1 (en) | Filter plate-type engine oil-gas separation device | |
| CN209385207U (en) | A kind of iris type oil-gas separating device of engine | |
| CN209244633U (en) | A kind of filter net type voltage adaptive controlling oil-gas separating device of engine | |
| CN109139186A (en) | A kind of strainer oil drive formula voltage adaptive controlling oil-gas separating device of engine | |
| CN109113831A (en) | A kind of strainer gas drive formula voltage adaptive controlling oil-gas separating device of engine | |
| CN214330726U (en) | High-efficient oil-gas separation device | |
| CN109113832A (en) | A kind of tree-shaped plate gas drive formula voltage adaptive controlling oil-gas separating device of engine | |
| CN109098817A (en) | A kind of filter plate oil drive formula voltage adaptive controlling oil-gas separating device of engine | |
| CN109139188A (en) | A kind of filter plate gas drive formula voltage adaptive controlling oil-gas separating device of engine | |
| CN209586466U (en) | A kind of partition gas drive formula oil-gas separating device of engine | |
| CN208294599U (en) | A kind of gas and oil separating plant and internal combustion engine | |
| CN113356964A (en) | Respiratory system | |
| CN109505679A (en) | A kind of natural gas engine with the adaptive ventilating system of iris type | |
| CN109209562A (en) | A kind of filter plate gas drive formula oil-gas separating device of engine | |
| RU151349U1 (en) | VALVE COVER FOR INTERNAL COMBUSTION ENGINES |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |