CN102562222B - Gas-oil separation check valve of automobile crankcase - Google Patents
Gas-oil separation check valve of automobile crankcase Download PDFInfo
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- CN102562222B CN102562222B CN 201110433049 CN201110433049A CN102562222B CN 102562222 B CN102562222 B CN 102562222B CN 201110433049 CN201110433049 CN 201110433049 CN 201110433049 A CN201110433049 A CN 201110433049A CN 102562222 B CN102562222 B CN 102562222B
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Abstract
The utility model provides a gas-oil separation check valve of an automobile crankcase and belongs to the technical field of automobiles. The check valve solves the problem that oil gas of an existing gas-oil separation check valve of the crankcase cannot flow into a gas inlet channel smoothly so that the problem of backflow of fresh mixed gas in a gas inlet pipe occurs when an engine has small load or does not work. The check valve comprises a valve body. A cavity, a gas inlet channel and a gas outlet channel are arranged in the valve body, and the gas inlet channel and the gas outlet channel are communicated with the cavity. A valve core is arranged in the cavity, is flat and can slide along an inner wall of the cavity. A spring is installed at one end of the valve core, one end of the spring acts on a spring seat fixed in the valve body, and the other end of the spring acts on the valve core to enable the valve core to seal the gas inlet channel. The gas-oil separation check valve enables the oil gas to smoothly flow into the gas inlet channel, and backflow of the fresh mixed gas in the gas inlet pipe is avoided when the engine has small load or does not work.
Description
Technical field
The invention belongs to automobile technical field, relate to a kind of one-way valve of vehicle crankcase Oil-gas Separation.
Background technique
Along with advancing and the fast development of automotive industry of society, people's living standard constantly improves, and automobile has become one of a kind of important traffic tool that people ride instead of walk.Motor is the heart of automobile, the part that is used for installing bent axle in the automobile engine cylinder-body bottom is called crankcase, and crankcase is divided into upper crankcase and lower crankcase, upper crankcase and cylinder block cast solid structure, lower crankcase is used for storing lubricant oil, and the sealing upper crankcase.
When engine operation, total some inflammable mixture and waste gas are in piston ring channels to crankcase, channel to after the interior gasoline vapor of crankcase condenses and will make machine oil thinning, performance depreciation, waste gas contains water vapour and closes two itching sulphur, water vapour condenses in machine oil and forms foam, destroy engine oil supplying, sulfur dioxide is met water and is generated sulphurous acid, and sulphurous acid runs into airborne oxygen and generates sulfuric acid, the appearance of these acidic materials not only makes machine oil rotten, and can make part be corroded; Because inflammable mixture closes waste gas, channel in crankcase, the pressure in crankcase will increase, and machine oil can ooze out and run off from crank shaft oil seal, crankcase liner etc., and the machine oil steam be lost in atmosphere can strengthen the pollution of motor to atmosphere; Therefore must take oil and gas separating system to carry out Oil-gas Separation to gas blowby, common way is to be provided with an one-way valve between deaerator and suction tude, the effect of this one-way valve is that the isolated oil gas of deaerator is imported to intake duct, mix again and burn with incoming mixture in intake duct, and prevent that motor from not working or little load suction tude in fresh mix gas refluence phenomenon.
In existing oil and gas separating system, the spool general motion of one-way valve is not smooth, cause oil gas can not flow into smoothly intake duct, incoming mixture refluence situation in suction tude while causing the little load of motor or motor not to be worked, the valve core movement of one-way valve freely also can not affect crankcase ventilation, in the past for a long time, the engine long time service will cause crankcase pressure excessive, easily produce the phenomenon of each joining portion gas leakage leakage of oil, engine power also increases thereupon simultaneously, affects engine performance; While also having the oil-air pressure of separating when deaerator excessive, easily too quickly to the spool promotion of one-way valve, the outlet passageway of obstruction one-way valve, make one-way valve lose the effect of ventilation.
Summary of the invention
The objective of the invention is for existing deficiency, provide a kind of neither can flow backwards by incoming mixture in suction tude, can not work as again oil-air pressure that deaerator separates when excessive, stop up the one-way valve of vehicle crankcase Oil-gas Separation of the outlet passageway of one-way valve.
Purpose of the present invention can realize by following technical proposal: a kind of one-way valve of vehicle crankcase Oil-gas Separation, described one-way valve comprises a valve body, there is a cavity in valve body, the gas-entered passageway be connected with cavity and outlet passageway, be provided with spool in cavity, described spool is flat and can slides along above-mentioned cavity inner wall, described spool one end is equipped with spring, one end of spring acts on the spring seat be fixed in valve body, and the other end acts on spool it is sealed gas-entered passageway.
The one-way valve of this vehicle crankcase Oil-gas Separation is arranged between deaerator and suction tude, the oil gas that deaerator is separated flows to from the gas-entered passageway of valve body, when oil-air pressure is greater than spring force, spool is pushed, and then Compress Spring, thering is gap between spool and gas-entered passageway, oil gas flows through from above-mentioned gap, by outlet passageway, oil gas enters the firing chamber that suction tude enters engine cylinder-body together with incoming mixture; Under engine stop work or small load condition, cause oil-air pressure to be less than spring pressure, spool can move to the gas-entered passageway mouth under the effect of spring force, by the gas-entered passageway sealing, prevents that in suction tude, incoming mixture flows backwards.
In the one-way valve of above-mentioned vehicle crankcase Oil-gas Separation, there is the supporting structure that prevents spool slipper seal outlet passageway in cavity in outlet passageway.The purpose arranged like this is, while making to prevent that oil-air pressure that deaerator separates is excessive, to promote spool, stops up the outlet passageway of one-way valve.
In the one-way valve of above-mentioned vehicle crankcase Oil-gas Separation, described supporting structure comprises a spacing pipe box, offers the ventilating hole that gas-entered passageway and outlet passageway are connected on the position-limiting tube jacket wall.When the oil-air pressure that deaerator is separated is excessive, promote the end that spool is resisted against stop collar.
In the one-way valve of above-mentioned vehicle crankcase Oil-gas Separation, described ventilating hole is positioned at an end of spacing pipe box sutaining valve core.
In the one-way valve of above-mentioned vehicle crankcase Oil-gas Separation, described cavity is a cavity cylindraceous, and on the inwall of cavity, along the circumferencial direction radial equipartition limited location plate of cavity, described limiting board and above-mentioned spacing pipe box form above-mentioned spring seat.This limiting board restraining spring at valve block internal diameter to movement.
In the one-way valve of above-mentioned vehicle crankcase Oil-gas Separation, described spool is a circle, has the gap that gas-entered passageway and outlet passageway are connected between this spool and cavity inner wall.This cavity is a cavity cylindraceous, and the slightly larger in diameter of this cavity is in the diameter of spool.
In the one-way valve of above-mentioned vehicle crankcase Oil-gas Separation, described valve body comprise the lower end cap with gas-entered passageway and the upper end cap with outlet passageway, described cavity is between upper end cap and lower end cap.This valve body is Split type structure, and is comprised of lower end cap and upper end cap.
In the one-way valve of above-mentioned vehicle crankcase Oil-gas Separation, described upper end cap and lower end cap link together and are provided with seal ring in joint by the mode of clamping.The purpose arranged like this is to guarantee that upper end cap is relative with lower end cap to seal.
Compared with prior art, the spool of the one-way valve of this vehicle crankcase Oil-gas Separation is flat and can slides along above-mentioned cavity inner wall, described spool one end is equipped with spring, one end of spring acts on the spring seat be fixed in valve body, can make oil gas flow into smoothly intake duct, incoming mixture refluence situation in suction tude in the time of can not making the little load of motor or engine operation, there is the supporting structure that prevents spool slipper seal outlet passageway in cavity in outlet passageway, when even the oil-air pressure that deaerator is separated is excessive, spool to one-way valve promotes too quickly, the outlet passageway of one-way valve can not result in blockage yet, guarantee the using effect of one-way valve.
The accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the one-way valve of this vehicle crankcase Oil-gas Separation.
In figure, 1, cavity; 2, gas-entered passageway; 3, outlet passageway; 4, spool; 5, spring; 6, spring seat; 7, spacing pipe box; 8, limiting board; 9, lower end cap; 10, upper end cap; 11, seal ring; 12, ventilating hole.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, the one-way valve of this vehicle crankcase Oil-gas Separation mainly is comprised of a valve body, in this valve body valve body, mainly by upper end cap 10 and lower end cap 9, formed, be provided with gas-entered passageway 2 on lower end cap 9, be provided with outlet passageway 3 on upper end cap 10, this upper end cap 10 is connected with lower end cap 9 and forms a cavity 1 cylindraceous, joint at upper end cap 10 and lower end cap 9 is provided with the seal ring 11 that makes upper end cap 10 sealing relative to lower end cap 9, be provided with spool 4 in cavity 1, during Practical manufacturing, this spool 4 is the flat round structure and can slides along above-mentioned cavity 1 inwall, there is the gap that gas-entered passageway 2 and outlet passageway 3 are connected between spool 4 external cylindrical surfaces and cavity 1 inwall, the inwall inner diameter of gas-entered passageway 2 is less than the inner diameter of cavity 1, spool 4 one ends are equipped with spring 5, one end of spring 5 acts on the spring seat 6 be fixed in valve body, and the other end acts on spool 4, causes spool 4 to be resisted against on an end face of gas-entered passageway 2 and makes it to gas-entered passageway 2 sealings, when preventing the excessive promotion of oil-air pressure spool 4 that deaerator separates, stopped up outlet passageway 3, there is the supporting structure that prevents spool 4 slipper seal outlet passageway 3 in cavity in outlet passageway 3, supporting structure mainly is comprised of a spacing pipe box 7, offer the ventilating hole 12 that gas-entered passageway 2 and outlet passageway 3 are connected on spacing pipe box 7 walls, ventilating hole 12 is positioned at the end that spacing pipe box 7 supports spool 4, on the inwall of cavity 1, along the circumferencial direction radial equipartition limited location plate 8 of cavity 1, limiting board 8 forms above-mentioned spring seat 6 with spacing pipe box 7, these limiting board 8 restraining springs 5 at valve block internal diameter to movement.
The one-way valve of this vehicle crankcase Oil-gas Separation is arranged between deaerator and suction tude, the oil gas that deaerator is separated flows to from the gas-entered passageway 2 of valve body, when oil-air pressure is greater than spring 5 elastic force, promote spool 4, and then Compress Spring 5, thering is gap between spool 4 and gas-entered passageway 2 inwalls, oil gas flows through from above-mentioned gap, by outlet passageway 3, oil gas enters the firing chamber that suction tude enters engine cylinder-body together with incoming mixture; Under engine stop work or small load condition, cause oil-air pressure to be less than spring 5 pressure, spool 4 can move to the end face of 2 mouthfuls of gas-entered passageways under the effect of spring 5 elastic force, by gas-entered passageway 2 sealings, prevents that in suction tude, incoming mixture flows backwards.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (5)
1. the one-way valve of a vehicle crankcase Oil-gas Separation, described one-way valve comprises a valve body, there is a cavity (1) in valve body, the gas-entered passageway (2) be connected with cavity (1) and outlet passageway (3), be provided with spool (4) in cavity (1), it is characterized in that, described spool (4) is flat and can slides along above-mentioned cavity (1) inwall, described spool (4) one ends are equipped with spring (5), one end of spring (5) acts on the spring seat (6) be fixed in valve body, the other end acts on spool (4) it is sealed gas-entered passageway (2), there is the supporting structure that prevents spool (4) slipper seal outlet passageway (3) in cavity (1) in outlet passageway (3), described supporting structure comprises a spacing pipe box (7), offers the ventilating hole (12) that gas-entered passageway (2) and outlet passageway (3) are connected on spacing pipe box (7) wall, described cavity (1) is a cavity cylindraceous, and on the inwall of cavity (1), along the circumferencial direction radial equipartition limited location plate (8) of cavity (1), described limiting board (8) forms above-mentioned spring seat (6) with above-mentioned spacing pipe box (7).
2. the one-way valve of vehicle crankcase Oil-gas Separation according to claim 1, is characterized in that, described ventilating hole (12) is positioned at the end that spacing pipe box (7) supports spool (4).
3. the one-way valve of vehicle crankcase Oil-gas Separation according to claim 1 and 2, it is characterized in that, described spool (4) is a circle, between this spool (4) and cavity (1) inwall, has the gap that gas-entered passageway (2) and outlet passageway (3) are connected.
4. the one-way valve of vehicle crankcase Oil-gas Separation according to claim 1, it is characterized in that, the comprising of described valve body there is gas-entered passageway (2) lower end cap (9) and there is the upper end cap (10) of outlet passageway (3), described cavity (1) is positioned between upper end cap (10) and lower end cap (9).
5. the one-way valve of vehicle crankcase Oil-gas Separation according to claim 4, is characterized in that, described upper end cap (10) and lower end cap (9) link together and are provided with seal ring (11) in joint by the mode of clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110433049 CN102562222B (en) | 2011-12-21 | 2011-12-21 | Gas-oil separation check valve of automobile crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110433049 CN102562222B (en) | 2011-12-21 | 2011-12-21 | Gas-oil separation check valve of automobile crankcase |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102562222A CN102562222A (en) | 2012-07-11 |
| CN102562222B true CN102562222B (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110433049 Active CN102562222B (en) | 2011-12-21 | 2011-12-21 | Gas-oil separation check valve of automobile crankcase |
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| CN (1) | CN102562222B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437904B (en) * | 2013-08-02 | 2016-05-25 | 浙江吉利汽车研究院有限公司 | A kind of crankcase and crankcase ventilation system |
| CN108049939B (en) * | 2017-12-14 | 2024-01-09 | 神通科技集团股份有限公司 | Oil-gas separator |
| CN108868961B (en) * | 2018-07-25 | 2024-04-16 | 宁波双驰电子有限公司 | Forced ventilation valve for crankcase |
| CN110425021A (en) * | 2019-07-19 | 2019-11-08 | 大乘汽车集团有限公司 | A kind of hole for engine crankshaft ventilation system is stifled |
| CN110925055B (en) * | 2019-12-16 | 2021-08-20 | 潍柴动力股份有限公司 | One-way oil return gas sealing cover plate structure and oil-gas separation oil return device |
| CN112983596A (en) * | 2021-02-24 | 2021-06-18 | 新昌县寅创汽车配件有限公司 | Oil-gas separation valve for automobile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205164U (en) * | 1986-07-12 | 1988-02-10 | 黄苏军 | Series valve slice vertical-oscillated breathing apparatus |
| CN2178790Y (en) * | 1993-10-29 | 1994-10-05 | 赵光伦 | Forced ventilation tail gas purification oil-saving disk for crankcase of vehicle |
| CN2499581Y (en) * | 2001-10-12 | 2002-07-10 | 常柴股份有限公司 | Aspirator of diesel engine gear room |
| CN101787914A (en) * | 2010-03-15 | 2010-07-28 | 徐连奎 | Forced ventilation one-way valve for automotive engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0337219U (en) * | 1989-08-21 | 1991-04-11 |
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2011
- 2011-12-21 CN CN 201110433049 patent/CN102562222B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205164U (en) * | 1986-07-12 | 1988-02-10 | 黄苏军 | Series valve slice vertical-oscillated breathing apparatus |
| CN2178790Y (en) * | 1993-10-29 | 1994-10-05 | 赵光伦 | Forced ventilation tail gas purification oil-saving disk for crankcase of vehicle |
| CN2499581Y (en) * | 2001-10-12 | 2002-07-10 | 常柴股份有限公司 | Aspirator of diesel engine gear room |
| CN101787914A (en) * | 2010-03-15 | 2010-07-28 | 徐连奎 | Forced ventilation one-way valve for automotive engine |
Non-Patent Citations (1)
| Title |
|---|
| JP平3-37219U 1991.04.11 |
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| CN102562222A (en) | 2012-07-11 |
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