CN103821590A - Crankcase oil-gas separation mechanism - Google Patents
Crankcase oil-gas separation mechanism Download PDFInfo
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- CN103821590A CN103821590A CN201410067918.8A CN201410067918A CN103821590A CN 103821590 A CN103821590 A CN 103821590A CN 201410067918 A CN201410067918 A CN 201410067918A CN 103821590 A CN103821590 A CN 103821590A
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- oil gas
- lug boss
- labyrinth
- depressed part
- oil
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Abstract
The invention discloses a crankcase oil-gas separation mechanism which comprises a box body. A labyrinth chamber is arranged in the box body, an oil and gas inlet, an oil and gas outlet and an engine oil recycling opening are formed in the labyrinth chamber, and a labyrinth channel is arranged between the oil and gas inlet and the oil and gas outlet. A convex part or/and a concave part is/are arranged on the inner wall of the labyrinth channel, the engine oil recycling opening is formed in the bottom of the labyrinth chamber, and the engine oil recycling opening is communicated with the labyrinth channel. The crankcase oil-gas separation mechanism is simple in structure, due to the fact that the convex part or/and the concave part is/are arranged on the inner wall of the labyrinth channel, the circulating length and area of oil and gas are increased, the oil-gas separating effect can be better achieved, engine oil particles which are attached to the inner wall can flow into the labyrinth chamber through the engine oil recycling opening under the action of gravity, the utilization rate of engine oil is improved, the space needed by the labyrinth channel is small, the purpose of oil-gas separation can be well achieved, miniaturization of an engine is promoted, and the weight and the cost of the entire mechanism can be better lowered.
Description
Technical field
The present invention relates to engine technology, particularly a kind of crankcase oil gas separating mechanism.
Background technique
Along with improving constantly that countries in the world require energy-saving and emission-reduction, to automobile, the lightweight that motorcycle starts and the requirement of pollutant emission also improve year by year, and the designing requirement of motor is also improved constantly, motor is constantly towards miniaturization, the future development of low emission.Traditional reciprocating internal combustion engine, motor in the course of the work, the to-and-fro motion of piston and the gas blowby of piston ring can cause the pressure in crankcase to raise, therefore must arrange corresponding crankcase respiratory balance sysmte, but in engine working process, due to the disturbance of each axle system, machine oil splash lubrication fills the air box house space machine oil gas, in oil gas, machine oil content is very high, if directly allow crankcase and ambient atmosphere be communicated with, carry out pressure balance, can allow machine oil gas discharge, atmosphere pollution, existing motor is normally connected by piping the end of balance sysmte with air filter of engine or intake manifold, oil gas is inhaled into firing chamber and burns, not directly discharged to atmosphere, if but the machine oil mixed gas in casing does not effectively separate, directly entering air filter sucks firing chamber and carries out burning and can cause combustion-chamber deposit, cause catalyst premature failure, oil consumption too much waits series of problems, therefore must in crankcase machine oil mixed gas separate.
Traditional crankcase oil gas separating mechanism, in order to obtain good separating effect, is designed to larger space by separation chamber conventionally, and this structure is unfavorable for the miniaturization of motor, and is unfavorable for the reduction of complete machine weight and cost.
Summary of the invention
Based on this, the invention reside in the defect that overcomes prior art, a kind of crankcase oil gas separating mechanism is provided, can not only well realize Oil-gas Separation, and compare traditional crankcase oil gas separating mechanism, space reduces greatly, is beneficial to the reduction of miniaturization, complete machine weight and the cost of motor.
Its technological scheme is as follows:
A kind of crankcase oil gas separating mechanism, comprise casing, in described casing, be provided with chamber, labyrinth, indoor oil gas entrance, oil gas vent and the machine oil of being provided with in described labyrinth reclaims mouth, between described oil gas entrance and oil gas vent, be provided with labyrinth channel, the inwall of described labyrinth channel is provided with lug boss or/and depressed part, and described machine oil reclaims and mouthful is arranged on the bottom of chamber, labyrinth, and is communicated with labyrinth channel.
Its further technological scheme is as follows:
Described lug boss is rib or salient point.
The cross section of described rib is triangular in shape or semicircle.
Described depressed part is groove or pit.
The cross section of described groove is triangular in shape or semicircle.
Described lug boss is or/and depressed part interval is covered with the inwall of labyrinth channel.
The ratio of the height and the width of described lug boss is less than or equal to 1, and the degree of depth of described depressed part and the ratio of width are less than or equal to 1.
The ratio of the gap length between two adjacent lug bosses or between two adjacent depressed parts or between adjacent lug boss and depressed part and the width of described lug boss or depressed part is more than or equal to 1.
The ratio of the gap length between the height of described lug boss and the width of lug boss and two adjacent lug bosses or between adjacent lug boss and depressed part is 1:2:3, and the ratio of the gap length between the degree of depth of described depressed part and the width of depressed part and two adjacent depressed parts or between adjacent depressed part and lug boss is 1:2:3.
The height of described lug boss is 3mm, the width of lug boss is 6mm, gap length between two adjacent lug bosses or between adjacent lug boss and depressed part is 9mm, the degree of depth of described depressed part is 3mm, the width of depressed part is 6mm, and the gap length between two adjacent depressed parts or between adjacent depressed part and lug boss is 9mm.
Advantage to aforementioned techniques scheme or principle describe below:
Above-mentioned crankcase oil gas separating mechanism, simple in structure, by lug boss is set or/and depressed part on the inwall of labyrinth channel, circulation length and the area of oil gas are increased, oil gas enters labyrinth channel from oil gas entrance, in labyrinth channel, flow with its inwall and lug boss or/and depressed part washes away, machine oil particle is attached on inwall, derive from oil gas vent by the oil gas after the separating treatment of chamber, labyrinth, thereby reach better the effect of Oil-gas Separation, and be attached to machine oil particle on inwall because the effect of gravity is reclaimed through machine oil and mouthful flowed out a chamber, labyrinth, improve the utilization ratio of machine oil, compare traditional crankcase oil gas separating mechanism, chamber, labyrinth requisite space reduces greatly, and the object of Oil-gas Separation can well be realized in the chamber, labyrinth after reducing, be beneficial to the miniaturization of motor, the reduction of complete machine weight and cost.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the right case described in the embodiment of the present invention one;
Fig. 2 is the cross-sectional view of the left box body described in the embodiment of the present invention one;
Fig. 3 is the structural representation that left box body described in the embodiment of the present invention one and right case are oppositely arranged;
Fig. 4 is the structural representation of the rib described in the embodiment of the present invention one;
Fig. 5 is the structural representation of the rib described in the embodiment of the present invention one;
Fig. 6 is the structural representation of the groove described in the embodiment of the present invention two;
Fig. 7 is the structural representation of the groove described in the embodiment of the present invention two.
Description of reference numerals:
101, left box body, 102, right case, 100, chamber, labyrinth, 110, labyrinth channel, 112, lug boss, 114, depressed part, 120, oil gas entrance, 130, oil gas vent, 140, machine oil reclaims mouthful.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated:
Embodiment one
As shown in Figures 1 to 5, a kind of crankcase oil gas separating mechanism, comprise casing, in described casing, be provided with chamber, labyrinth 100, in chamber, described labyrinth 100, be provided with oil gas entrance 120, oil gas vent 130 and machine oil and reclaim mouth 140, between described oil gas entrance 120 and oil gas vent 130, be provided with labyrinth channel 110, the inwall of described labyrinth channel 110 is provided with lug boss 112 or/and depressed part 114, described machine oil reclaims mouth 130 and is arranged on the bottom of chamber, labyrinth 100, and is communicated with labyrinth channel 110.
Above-mentioned crankcase oil gas separating mechanism, simple in structure, by lug boss 112 or depressed part 114 are set on the inwall of labyrinth channel, circulation length and the area of oil gas are increased, oil gas enters labyrinth channel 110 from oil gas entrance 120, flow with its inwall and lug boss or/and depressed part washes away labyrinth channel 110 is interior, machine oil particle is attached on inwall, derive from oil gas vent 130 by the oil gas after 100 separating treatment of chamber, labyrinth, thereby reach better the effect of Oil-gas Separation, and be attached to machine oil particle on inwall because the effect of gravity is reclaimed mouthfuls 140 through machine oil and flowed out chambers, labyrinth, improve the utilization ratio of machine oil, compare traditional crankcase oil gas separating mechanism, chamber, labyrinth requisite space reduces greatly, and the object of Oil-gas Separation can well be realized in the chamber, labyrinth after reducing, be beneficial to the miniaturization of motor, the reduction of complete machine weight and cost.
The casing of described crankcase oil gas separating mechanism comprises left box body 101, right case 102, chamber, described labyrinth 100 is arranged on the upper end of left box body 101 and right case 102, being convenient to gas discharges, in chamber, labyrinth 100, there are multiple cavitys, multiple cavitys are divided into two-part by left box body 101 and right case 102, and each cavity is communicated with formation labyrinth channel 110, in the present embodiment, oil gas entrance 120 is arranged on right case 102, and oil gas entrance 120 places are provided with rib, be used for blocking oil gas entrance 120, avoid machine oil to enter chamber, labyrinth, described oil gas vent 130 is arranged on right case 102 tops, facilitate gas to discharge chamber, labyrinth from bottom to top, described machine oil reclaims mouth 140 bottom that is positioned at chamber, labyrinth 100 is set, be convenient to isolated machine oil from oil gas and flow out chamber, labyrinth 100 from top to bottom, and it is less that machine oil recovery mouth 140 goes out width, described width can facilitate the smooth and easy outflow of machine oil, can effectively avoid again the oil gas in crankcase to enter chamber, labyrinth by machine oil recovery mouth 140.
In described motor, gas flow principle is as follows: in crankcase, oil gas enters chamber, labyrinth by oil gas entrance 120, after separating, chamber, labyrinth entered by oil gas vent 130 in the clean chamber of air filter, clean chamber is communicated with Carburetor, Carburetor is communicated with the cylinder head of piston, cylinder head is communicated with crankcase, flows thereby realize gas circulation.
As shown in Figure 4, described in the present embodiment, lug boss 112 is rib, the cross section of described rib is triangular in shape, by cross section rib triangular in shape is set at the inwall of labyrinth channel, make flow direction and the form undulate of the indoor machine oil gas in labyrinth, increase disjoint paths and the adsorption area of oil gas.As shown in Figure 5, according to the actual requirements, describedly can cross section be set at the inwall of labyrinth channel 110 and become semicircular rib, the rib of orthogonal or other shapes of cross section also can be set at the inwall of labyrinth channel 110, described lug boss 112 also can be set to salient point, the height of described lug boss 112 is less than the width of corresponding part labyrinth channel, avoids labyrinth channel blocked.
The ratio of the height and the width of described lug boss 112 is less than or equal to 1, if lug boss is cross section rib triangular in shape, leg-of-mutton height is set to equate with the width on base, can make so the easily manufactured realization of technique, can effectively avoid again lug boss stress to concentrate, make the lug boss of moulding reach the quality of technical requirements; The ratio of the gap length between two adjacent lug bosses and the width of described lug boss is more than or equal to 1, if lug boss is the rib of cross section semicircular in shape, on labyrinth channel inwall, every the width of a rib, a rib is set, the best results of Oil-gas Separation can be guaranteed like this, the easily manufactured realization of technique can be guaranteed again.The ratio of the gap length between the height of described lug boss and the width of lug boss and two adjacent lug bosses is preferably 1:2:3, can meet like this technique and manufacture demand, can meet again chamber, labyrinth oil gas separation.As described in the height of lug boss be set to 3mm, the width of lug boss is 6mm, the gap length between two adjacent lug bosses is 9mm.
Embodiment two
As shown in Figure 6, described in the present embodiment, crankcase oil gas separating mechanism and embodiment's one difference are, the inwall of described labyrinth channel is provided with depressed part 114, described depressed part 114 is groove, the cross section of described groove is triangular in shape, by cross section groove triangular in shape is set at the inwall of labyrinth channel, make flow direction and the form undulate of the indoor machine oil gas in labyrinth, increase disjoint paths and the adsorption area of oil gas.As shown in Figure 7, according to the actual requirements, describedly can cross section be set at the inwall of labyrinth channel 110 and become semicircular groove, the groove of orthogonal or other shapes of cross section also can be set at the inwall of labyrinth channel 110, described depressed part 114 also can be set to pit.
For making oil gas separation better, described lug boss 112 or depressed part 114 intervals are covered with the inwall of labyrinth channel.
The degree of depth of described depressed part 114 and the ratio of width are less than or equal to 1, if depressed part is cross section groove triangular in shape, leg-of-mutton height is set to equate with the width on base, can make so the easily manufactured realization of technique, can effectively avoid again lug boss stress to concentrate, make the depressed part of moulding reach the quality of technical requirements; The ratio of the gap length between two adjacent depressed parts and the width of described depressed part is more than or equal to 1, if depressed part is the groove of cross section semicircular in shape, on labyrinth channel inwall, every the width of a groove, a groove is set, the best results of Oil-gas Separation can be guaranteed like this, the easily manufactured realization of technique can be guaranteed again.The ratio of the gap length between the degree of depth of described depressed part and the width of depressed part and two adjacent depressed parts is preferably 1:2:3, can meet like this technique and manufacture demand, can meet again chamber, labyrinth oil gas separation.As described in the degree of depth of depressed part be set to 3mm, the width of depressed part is 6mm, the gap length between two adjacent depressed parts is 9mm.According to the actual requirements, also can in channel interior, rib and groove be set interval, the ratio of the gap length between adjacent rib and groove and the width of rib or groove is more than or equal to 1.
The above embodiment has only expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. a crankcase oil gas separating mechanism, comprise casing, it is characterized in that, in described casing, be provided with chamber, labyrinth, indoor oil gas entrance, oil gas vent and the machine oil of being provided with in described labyrinth reclaims mouth, between described oil gas entrance and oil gas vent, is provided with labyrinth channel, and the inwall of described labyrinth channel is provided with lug boss or/and depressed part, described machine oil reclaims mouth and is arranged on the bottom of chamber, labyrinth, and is communicated with labyrinth channel.
2. crankcase oil gas separating mechanism according to claim 1, is characterized in that, described lug boss is rib or salient point.
3. crankcase oil gas separating mechanism according to claim 2, is characterized in that, the cross section of described rib is triangular in shape or semicircle.
4. crankcase oil gas separating mechanism according to claim 1, is characterized in that, described depressed part is groove or pit.
5. crankcase oil gas separating mechanism according to claim 4, is characterized in that, the cross section of described groove is triangular in shape or semicircle.
6. according to the crankcase oil gas separating mechanism described in claim 1 to 5 any one, it is characterized in that, described lug boss is or/and depressed part interval is covered with the inwall of labyrinth channel.
7. crankcase oil gas separating mechanism according to claim 6, is characterized in that, the ratio of the height and the width of described lug boss is less than or equal to 1, and the degree of depth of described depressed part and the ratio of width are less than or equal to 1.
8. crankcase oil gas separating mechanism according to claim 7, it is characterized in that, the ratio of the gap length between two adjacent lug bosses or between two adjacent depressed parts or between adjacent lug boss and depressed part and the width of described lug boss or depressed part is more than or equal to 1.
9. crankcase oil gas separating mechanism according to claim 8, it is characterized in that, the ratio of the gap length between the height of described lug boss and the width of lug boss and two adjacent lug bosses or between adjacent lug boss and depressed part is 1:2:3, and the ratio of the gap length between the degree of depth of described depressed part and the width of depressed part and two adjacent depressed parts or between adjacent depressed part and lug boss is 1:2:3.
10. crankcase oil gas separating mechanism according to claim 9, it is characterized in that, the height of described lug boss is 3mm, the width of lug boss is 6mm, gap length between two adjacent lug bosses or between adjacent lug boss and depressed part is 9mm, the degree of depth of described depressed part is 3mm, and the width of depressed part is 6mm, and the gap length between two adjacent depressed parts or between adjacent depressed part and lug boss is 9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067918.8A CN103821590B (en) | 2014-02-26 | 2014-02-26 | Crankcase oil-gas separation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067918.8A CN103821590B (en) | 2014-02-26 | 2014-02-26 | Crankcase oil-gas separation mechanism |
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| Publication Number | Publication Date |
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| CN103821590A true CN103821590A (en) | 2014-05-28 |
| CN103821590B CN103821590B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410067918.8A Active CN103821590B (en) | 2014-02-26 | 2014-02-26 | Crankcase oil-gas separation mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179102A (en) * | 2015-09-23 | 2015-12-23 | 江门市大长江集团有限公司 | Crankcase for motorcycle engine and venting device of motorcycle engine |
| CN112283500A (en) * | 2020-10-10 | 2021-01-29 | 东风商用车有限公司 | Diesel engine flywheel housing system integrating oil-gas coarse and fine separation functions |
| CN113958384A (en) * | 2021-10-19 | 2022-01-21 | 重庆隆鑫发动机有限公司 | Tricycle engine and engine crankcase |
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| GB2274413A (en) * | 1993-01-23 | 1994-07-27 | Glacier Metal Co Ltd | Centrifugal separator |
| KR20020058666A (en) * | 2000-12-30 | 2002-07-12 | 이계안 | Apparatus for separating oil |
| US20020195091A1 (en) * | 2001-06-25 | 2002-12-26 | Hong-Kil Baek | Engine chain cover |
| CN201232577Y (en) * | 2008-05-30 | 2009-05-06 | 隆鑫工业有限公司 | Oil gas separating structure for exhaust gas of engine crankcase |
| CN102297002A (en) * | 2010-06-24 | 2011-12-28 | 马自达汽车株式会社 | Oil separation device of engine |
| CN102400740A (en) * | 2011-12-23 | 2012-04-04 | 隆鑫通用动力股份有限公司 | Gasoline engine and oil-gas separation structure assembly for gasoline engine |
| CN203717079U (en) * | 2014-02-26 | 2014-07-16 | 江门市大长江集团有限公司 | Oil-gas separation mechanism for crankcase |
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2014
- 2014-02-26 CN CN201410067918.8A patent/CN103821590B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2274413A (en) * | 1993-01-23 | 1994-07-27 | Glacier Metal Co Ltd | Centrifugal separator |
| KR20020058666A (en) * | 2000-12-30 | 2002-07-12 | 이계안 | Apparatus for separating oil |
| US20020195091A1 (en) * | 2001-06-25 | 2002-12-26 | Hong-Kil Baek | Engine chain cover |
| CN201232577Y (en) * | 2008-05-30 | 2009-05-06 | 隆鑫工业有限公司 | Oil gas separating structure for exhaust gas of engine crankcase |
| CN102297002A (en) * | 2010-06-24 | 2011-12-28 | 马自达汽车株式会社 | Oil separation device of engine |
| CN102400740A (en) * | 2011-12-23 | 2012-04-04 | 隆鑫通用动力股份有限公司 | Gasoline engine and oil-gas separation structure assembly for gasoline engine |
| CN203717079U (en) * | 2014-02-26 | 2014-07-16 | 江门市大长江集团有限公司 | Oil-gas separation mechanism for crankcase |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179102A (en) * | 2015-09-23 | 2015-12-23 | 江门市大长江集团有限公司 | Crankcase for motorcycle engine and venting device of motorcycle engine |
| CN105179102B (en) * | 2015-09-23 | 2018-04-13 | 江门市大长江集团有限公司 | The crankcase and its air-breather of a kind of motorcycle engine |
| CN112283500A (en) * | 2020-10-10 | 2021-01-29 | 东风商用车有限公司 | Diesel engine flywheel housing system integrating oil-gas coarse and fine separation functions |
| CN113958384A (en) * | 2021-10-19 | 2022-01-21 | 重庆隆鑫发动机有限公司 | Tricycle engine and engine crankcase |
| CN113958384B (en) * | 2021-10-19 | 2023-02-07 | 重庆隆鑫发动机有限公司 | Tricycle engine and engine crankcase |
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| Publication number | Publication date |
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| CN103821590B (en) | 2017-03-08 |
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