CN101943040B - Bent axle box ventilation labyrinth - Google Patents
Bent axle box ventilation labyrinth Download PDFInfo
- Publication number
- CN101943040B CN101943040B CN2010102955678A CN201010295567A CN101943040B CN 101943040 B CN101943040 B CN 101943040B CN 2010102955678 A CN2010102955678 A CN 2010102955678A CN 201010295567 A CN201010295567 A CN 201010295567A CN 101943040 B CN101943040 B CN 101943040B
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- main body
- gas
- diaphragm
- oil
- dividing plate
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- 238000009423 ventilation Methods 0.000 title claims abstract description 23
- 238000005192 partition Methods 0.000 claims description 29
- 210000003027 ear inner Anatomy 0.000 claims 8
- 238000000926 separation method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 25
- 230000000087 stabilizing effect Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention provides a bent axle box ventilation labyrinth with simple structure and good oil gas separating effect. The main body of the labyrinth is a cuboid cavity; the main body has an air outlet and an air inlet; multiple groups of diaphragms are arranged between the air inlet and the air outlet in the cavity at intervals; each group of diaphragms is composed of a first diaphragm close to the direction of the air inlet and a second diaphragm close to the direction of the air outlet; the distance of the first diaphragm and the second separation is 2-10mm; a first gas passing clearance is arranged between the top part of the first diaphragm and the top plate of the main body; a through hole is arranged at the center of the first diaphragm; a second gas passing clearance is arranged between the side of the diaphragm and the side plate of the main body; oil returning holes are arranged at the bottoms of the first diaphragm and the second diaphragm; the bent axle box ventilation labyrinth of the invention utilizes the clearances formed between the inner wall of the main body and the diaphragm and between the diaphragms as oil and gas flowing channels to lead oil and gas to flow in the narrow clearances, thus increasing the contact areas and crashing times between the oil and gas and the diaphragm as well as between the oil and gas and the inner wall of the main body, and improving the effect of oil and gas separation.
Description
Technical field
The invention belongs to the crankcase ventilation system of engine art, specially refer to the crankcase ventilation labyrinth in the crankcase ventilation system.
Background technique
The crankcase ventilation labyrinth of existing structure is through arranging that the oily dividing plate of retaining makes oil gas flow to be adsorbed on the wall and through making air-flow change direction along wall the oil in the oil gas is formed the gentle separation of oil through centrifugation; Usually arrange that the oily dividing plate distance of retaining is far away; Make oil gas along wall flow effect and the air-flow DeGrain that turns round, oil gas separation is not so good, in addition in order to increase the area of contact of air-flow and dividing plate; Need the dividing plate quantity that increase, cost is higher more.When the Oil-gas Separation efficient in labyrinth is not high, need to increase again in addition to arrange that deaerator comes separated oil, increase part and cost.Original in addition labyrinth also need be designed independent drainback passage and take the oil gas insulating measure, has also caused on the structure complicated.
Summary of the invention
The objective of the invention is to propose a kind of crankcase ventilation labyrinth of simple in structure, good oil gas separation effect.
The main body of crankcase ventilation labyrinth of the present invention is a rectangular-shaped cavity, and the top of said main body has exhaust outlet, and the bottom has intake grill; Key is to be arranged at intervals with between inherent intake grill of said cavity and the exhaust outlet many group dividing plates, every group of dividing plate by near first dividing plate of intake grill direction, form first dividing plate and second partition spacing 2～10mm near the second partition of exhaust outlet direction; Have first between the top of said first dividing plate and the top board of said main body and cross the gas gap, the central authorities of first dividing plate have through hole; Have second between the side of said second partition and the side plate of said main body and cross the gas gap; The bottom of said first dividing plate, second partition is provided with spill port.
Gas flow direction in the above-mentioned crankcase ventilation labyrinth is following: after oil gas gets into from intake grill; At first the through hole through the first mistake gas gap, first dividing plate flows to second partition; After receiving second partition and stopping, can be between first dividing plate, second partition bump repeatedly, and flow to the second mistake gas gap of second partition both sides along first dividing plate and the gap of second partition; Flow to the dividing plate of next group after the bending through 90 degree, up to flowing to the exhaust outlet place.The oil droplet of separating flows back to the intake grill place through spill port, finally flows back to oil sump.Because the spacing of first dividing plate and second partition is nearer, force oil gas pasting dividing plate and flow, strengthen the oil gas adsorption rate, gas must strengthen the effect of Oil-gas Separation through the bending of 90 degree greatly in flow process simultaneously.First crosses the gas gap is arranged on the top, and air-flow is from top to bottom flowed, and the machine oil that helps to adsorb on the dividing plate flows downward, reclaims.
The side of said second partition both sides has the flanging towards the exhaust outlet direction, and said flanging is parallel with the side plate of said main body.Flanging has prolonged the flow path of oil gas in catwalk, has increased the area of contact of oil gas and dividing plate, helps to strengthen the effect of Oil-gas Separation.
Said intake grill place is provided with oblique baffle plate, and the intake grill that forms with main body of said baffle plate is back to exhaust outlet one side, like this when oil gas when intake grill gets into, at first can strike on the baffle plate, changed the direction of oil gas, help Oil-gas Separation.
Have the 3rd between the side of said first dividing plate and the side plate of said main body and cross the gas gap, have the 4th between the top of said second partition and the top board of said main body and cross the gas gap.The 3rd cross gas gap, the 4th cross the gas gap can be big at engine load, oil and gas content provides auxiliary gas channel in big, avoids influencing engine performance.
Crankcase ventilation labyrinth of the present invention is provided with many group dividing plates; And utilize between main body inner wall and the dividing plate, between dividing plate and the dividing plate formed gap as the passage of flowing through of oil gas; Oil gas is flowed in narrow gap; Increase the area of contact and the collision frequency of oil gas and dividing plate and main body inner wall, thereby improved the effect of Oil-gas Separation.
Description of drawings
Fig. 1 is the forward sectional view of crankcase ventilation labyrinth of the present invention;
Fig. 2 is the B-B sectional view of Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 1.
Embodiment
Specify the present invention below in conjunction with specific embodiment and accompanying drawing.
Like Fig. 1,2, shown in 3, the main body of the crankcase ventilation labyrinth of present embodiment is a rectangular-shaped cavity that is surrounded by valve chamber cover 1 and coaming plate 2, and the center of top of main body has exhaust outlet 3, and two bottom sides has intake grill 4; All be arranged at intervals with two groups of dividing plates between exhaust outlet 3 and each intake grill 4, every group of dividing plate by near first dividing plate 5 of intake grill 4 directions, form first dividing plate 5 and second partition 6 spacings 2～10mm near the second partition 6 of exhaust outlet 3 directions; The central authorities that have the first mistake gas gap, 9, the first dividing plates 5 of 1～10mm between the cover plate of the top of first dividing plate 5 and valve chamber cover 1 have the through hole 10 that diameter is 1～15mm; Have second of 1～10mm between the side plate of the side of second partition 6 and valve chamber cover 1 and cross gas gap 16.
The side of second partition 6 both sides has the flanging 8 towards exhaust outlet 3 directions, and flanging 8 is parallel with the side plate of valve chamber cover 1.
Have the 3rd between the side plate of the side of first dividing plate 5 and valve chamber cover 1 and cross gas gap 15, have the 4th between the top board of the top of second partition 6 and valve chamber cover 1 and cross gas gap 13.The 3rd crosses gas gap the 15, the 4th crosses gas gap 13 less than 1mm.
The 3rd crosses the spill port that the bottom of crossing gas gap 16 in gas gap 15, second constitutes first dividing plate, second partition.
Form between above-mentioned many group dividing plates near first pressure stabilizing cavity 11 of intake grill 4 directions with near second pressure stabilizing cavity 12 of exhaust outlet 3 directions.
Gas flow direction in the above-mentioned crankcase ventilation labyrinth is following: after oil gas gets into from intake grill 4; At first can strike on the baffle plate 7 and change direction, flow to the end wall of main body, through reflection, compile after again through first cross gas gap 9, first dividing plate through hole 10 flow to second partition 6; After receiving second partition 6 and stopping; Can be between first dividing plate 5, second partition 6 bump repeatedly, and flow to second of second partition both sides along the gap 14 of first dividing plate and second partition and cross gas gap 16, through flowing to first pressure stabilizing cavity 11 after 90 bendings of spending; And then flow to the dividing plate and second pressure stabilizing cavity 12 of next group, flow out through exhaust outlet 3 at last.The oil droplet of separating is crossed the bottom of crossing gas gap 16 in gas gap 15, second through the 3rd and is flowed back to intake grill 4 places, finally flows back to oil sump.
Claims (8)
1. crankcase ventilation labyrinth; Its main body is a rectangular-shaped cavity; The top of said main body has exhaust outlet, and the bottom has intake grill, it is characterized in that being arranged at intervals with between inherent intake grill of said cavity and the exhaust outlet many group dividing plates; Every group of dividing plate by near first dividing plate of intake grill direction, form first dividing plate and second partition spacing 2～10mm near the second partition of exhaust outlet direction; Have first between the top of said first dividing plate and the top board of said main body and cross the gas gap, the central authorities of first dividing plate have through hole; Have second between the side of said second partition and the side plate of said main body and cross the gas gap; The bottom of said first dividing plate, second partition is provided with spill port.
2. crankcase ventilation labyrinth according to claim 1 is characterized in that the side of said second partition both sides has the flanging towards the exhaust outlet direction, and said flanging is parallel with the side plate of said main body.
3. crankcase ventilation labyrinth according to claim 2 is characterized in that said intake grill place is provided with oblique baffle plate, and the intake grill that said baffle plate and main body form is back to exhaust outlet one side.
4. according to claim 1 or 2 or 3 described crankcase ventilation labyrinths; It is characterized in that having the 3rd between the side plate of side and said main body of said first dividing plate crosses the gas gap, has the 4th mistake gas gap between the top of said second partition and the top board of said main body.
5. crankcase ventilation labyrinth according to claim 4 is characterized in that said the 3rd mistake gas gap, the 4th mistake gas gap are less than 1mm.
6. according to claim 1 or 2 or 3 described crankcase ventilation labyrinths, it is characterized in that said intake grill has two, is symmetricly set in the both sides of exhaust outlet.
7. according to claim 1 or 2 or 3 described crankcase ventilation labyrinths, it is characterized in that it is 1～10mm that the gas gap is crossed in the said first mistake gas gap, second.
8. according to claim 1 or 2 or 3 described crankcase ventilation labyrinths, the through-hole diameter that it is characterized in that said first dividing plate is 1～15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102955678A CN101943040B (en) | 2010-09-27 | 2010-09-27 | Bent axle box ventilation labyrinth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102955678A CN101943040B (en) | 2010-09-27 | 2010-09-27 | Bent axle box ventilation labyrinth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101943040A CN101943040A (en) | 2011-01-12 |
| CN101943040B true CN101943040B (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102955678A Active CN101943040B (en) | 2010-09-27 | 2010-09-27 | Bent axle box ventilation labyrinth |
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| Country | Link |
|---|---|
| CN (1) | CN101943040B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703998A (en) * | 2016-12-21 | 2017-05-24 | 中国燃气涡轮研究院 | Laminated restrictor |
| JP7000798B2 (en) | 2017-10-25 | 2022-01-19 | トヨタ紡織株式会社 | Oil separator |
| CN107910791B (en) * | 2017-12-26 | 2024-07-12 | 索凌电气有限公司 | Distribution box and ventilation box door thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363345A (en) * | 2008-09-17 | 2009-02-11 | 奇瑞汽车股份有限公司 | Labyrinth type oil-gas separating structure in cover of engine spiracular atrium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988544A (en) * | 1995-09-29 | 1997-03-31 | Tenetsukusu:Kk | Oil mist separator |
| JP4353473B2 (en) * | 2004-05-27 | 2009-10-28 | ダイハツ工業株式会社 | Oil separation device for blow-by gas in internal combustion engines |
| JP4890230B2 (en) * | 2006-12-21 | 2012-03-07 | 株式会社マーレ フィルターシステムズ | Oil mist separator for blow-by gas passage in internal combustion engine |
| JP5134501B2 (en) * | 2008-10-28 | 2013-01-30 | 三菱重工業株式会社 | Gas engine lubrication system |
-
2010
- 2010-09-27 CN CN2010102955678A patent/CN101943040B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363345A (en) * | 2008-09-17 | 2009-02-11 | 奇瑞汽车股份有限公司 | Labyrinth type oil-gas separating structure in cover of engine spiracular atrium |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2005-337123A 2005.12.08 |
| JP特开2008-157047A 2008.07.10 |
| JP特开平9-88544A 1997.03.31 |
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| CN101943040A (en) | 2011-01-12 |
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