CN112228186A - Diesel engine crankcase ventilation oil-gas separation structure - Google Patents
Diesel engine crankcase ventilation oil-gas separation structure Download PDFInfo
- Publication number
- CN112228186A CN112228186A CN202011180054.2A CN202011180054A CN112228186A CN 112228186 A CN112228186 A CN 112228186A CN 202011180054 A CN202011180054 A CN 202011180054A CN 112228186 A CN112228186 A CN 112228186A
- Authority
- CN
- China
- Prior art keywords
- ventilation
- impeller
- gas separation
- oil
- separation structure
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
Abstract
The invention discloses a ventilation oil-gas separation structure of a diesel engine crankcase. The oil-gas separation structure is positioned in a gear chamber of the engine, the ventilation impeller is driven to rotate by the crankshaft gear, and the crankcase gas flowing into the ventilation impeller is driven to rotate at a high speed by the ventilation impeller. Oil-gas separation is realized under the action of centrifugal force. The invention has active oil-gas separation, the separator has high efficiency, and the ventilation impeller pumps the gas in the crankcase to realize the negative pressure of the crankcase.
Description
Technical Field
The invention belongs to the technical field of engine crankcase ventilation systems, and particularly relates to a diesel engine crankcase ventilation oil-gas separation structure.
Background
The existing crankcase ventilation oil-gas separation mostly adopts a labyrinth structure, a labyrinth is positioned in a cylinder head cover at the top of an engine and is surrounded by a labyrinth cover plate and a cover body, the inside of the labyrinth is composed of a partition plate and is provided with a gas inlet and a gas outlet, gas enters the labyrinth and then strikes the labyrinth partition plate, oil drops are gathered to realize oil-gas separation, and the oil drops flow back to the inside of the engine through an oil return port.
The oil-gas separation efficiency of the structure is greatly influenced by the pressure of a crankcase, the gas flow rate and the ambient temperature of the engine, and the separation efficiency is lower.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a ventilation oil-gas separation structure of a crankcase of a diesel engine.
The technical scheme adopted by the invention is as follows: the utility model provides a diesel engine crankcase ventilation oil-gas separation structure, oil-gas separation structure is located engine gear room, and it is rotatory to drive the ventilation impeller through the bent axle gear, and the high-speed rotation of crankcase gas that flows into it is driven by the ventilation impeller. Oil-gas separation is realized under the action of centrifugal force.
In a further preferable structure, the crankshaft gear is in transmission connection with the ventilation impeller through a driving transition gear.
In a further preferred structure, the ventilation impeller is located in a space formed by the gear chamber and the front end plate.
In a further preferred configuration, the front end plate is connected to the cylinder block.
In a further preferred structure, the ventilation impeller is mounted on an impeller mounting gear, and the impeller mounting gear is mounted on the front end plate.
In a further preferred configuration, the ventilation impeller and the impeller mounting gear are sealed by an O-ring at a joint surface.
In a further preferred structure, the number of the blades of the ventilating impeller is 12 to 15. Preferably 13.
In a further preferred structure, the outlet installation angle of the ventilation impeller is 45 degrees.
In a further preferable structure, a flow guide ring is arranged in a gap between the ventilation impeller and the wall surface of the gear chamber.
Further preferred structure, gear room outside sets up crankcase ventilation flap, crankcase ventilation flap is connected with crankcase ventilation pipe one end, the crankcase ventilation pipe other end and atmosphere intercommunication.
The invention has the beneficial effects that: the invention has active oil-gas separation, the separator has high efficiency, and the ventilation impeller pumps the gas in the crankcase to realize the negative pressure of the crankcase.
Drawings
FIG. 1 is a schematic view of the overall arrangement of the present invention;
FIG. 2 is a schematic view of a ventilation impeller arrangement;
FIG. 3 is a schematic diagram of the oil-gas separation principle.
Wherein, 1-gear chamber, 2-front end plate, 3-cylinder body, 4-crankcase ventilation cover, 5-crankcase ventilation pipe, 6-ventilation impeller, 7-guide ring, 8-crankshaft gear, 9-driving transition gear, 10-impeller installation gear.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in figure 1, the ventilation impeller 6 of the invention is positioned in a space formed by a gear chamber 1 and a front end plate 2, the front end plate 2 is connected with a cylinder body 3, and separated gas is exhausted to the atmosphere through a crankcase ventilation cover 4 and a crankcase ventilation pipe 5.
As shown in fig. 2, the ventilation impeller 6 is mounted on the impeller mounting gear 10, and the joint surface is sealed by an O-ring seal to avoid oil gas leakage. The crankshaft gear 8 drives the transition gear 9 to drive the impeller mounting gear 10 to rotate clockwise, and the rotating speed is controlled by the speed ratio between the gears. The number of the blades on the ventilation impeller 6 is 13, and the installation angle of the outlet of the ventilation impeller 6 is 45 degrees.
As shown in fig. 3, when the ventilation impeller 6 rotates, blow-by gas collides with the impeller, oil droplets are separated from the gas by centrifugal force, and the engine oil and the separated oil droplets can flow into the exhaust port at the center of the turbine blade through the gap between the ventilation impeller 6 and the wall surface of the gear chamber 1, so that the guide ring 7 is added at the position to prevent the engine oil from flowing out, thereby discharging the separated clean gas.
Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. The utility model provides a diesel engine crankcase ventilation oil-gas separation structure which characterized in that: the oil-gas separation structure is positioned in the engine gear chamber (1), the ventilation impeller (6) is driven to rotate through the crankshaft gear (8), and crankcase gas flowing into the ventilation impeller (6) is driven to rotate at a high speed by the ventilation impeller (6).
2. The diesel engine crankcase ventilation oil-gas separation structure of claim 1, characterized in that: the crankshaft gear (8) is in transmission connection with the ventilation impeller (6) through a driving transition gear (9).
3. The diesel engine crankcase ventilation oil-gas separation structure according to claim 1 or 2, characterized in that: the ventilation impeller (6) is positioned in a space formed by the gear chamber (1) and the front end plate (2).
4. The diesel engine crankcase ventilation oil-gas separation structure of claim 3, characterized in that: the front end plate (2) is connected with the cylinder body (3).
5. The diesel engine crankcase ventilation oil-gas separation structure of claim 1, characterized in that: the ventilation impeller (6) is arranged on an impeller mounting gear (10), and the impeller mounting gear (10) is arranged on the front end plate (2).
6. The diesel engine crankcase ventilation oil-gas separation structure of claim 5, characterized in that: and the joint surface of the ventilation impeller (6) and the impeller mounting gear (10) is sealed by an O-shaped sealing ring.
7. The diesel engine crankcase ventilation oil-gas separation structure of claim 1, characterized in that: the number of the blades of the ventilating impeller (6) is 12-15.
8. The diesel engine crankcase ventilation oil-gas separation structure of claim 1, characterized in that: and the installation angle of the outlet of the ventilation impeller (6) is 45 degrees.
9. The diesel engine crankcase ventilation oil-gas separation structure of claim 1, characterized in that: and a flow guide ring (7) is arranged in a gap between the ventilation impeller (6) and the wall surface of the gear chamber (1).
10. The diesel engine crankcase ventilation oil-gas separation structure of claim 1, characterized in that: the gear room (1) outside sets up crankcase ventilation flap (4), crankcase ventilation flap (4) are connected with crankcase ventilation pipe (5) one end, crankcase ventilation pipe (5) other end and atmosphere intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180054.2A CN112228186A (en) | 2020-10-29 | 2020-10-29 | Diesel engine crankcase ventilation oil-gas separation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180054.2A CN112228186A (en) | 2020-10-29 | 2020-10-29 | Diesel engine crankcase ventilation oil-gas separation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112228186A true CN112228186A (en) | 2021-01-15 |
Family
ID=74109818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011180054.2A Pending CN112228186A (en) | 2020-10-29 | 2020-10-29 | Diesel engine crankcase ventilation oil-gas separation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112228186A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008028173A1 (en) * | 2008-06-12 | 2009-01-22 | Daimler Ag | Centrifugal oil separator for use as chain wheel of valve gear, has separating chamber formed inside housing, and moment coupling structures cooperating with axial fasteners, where housing includes wall section designed as tooth |
| CN201301744Y (en) * | 2008-11-19 | 2009-09-02 | 中国第一汽车集团公司 | Oil-gas separator structure |
| CN102840007A (en) * | 2012-08-29 | 2012-12-26 | 东风汽车有限公司 | Crankcase ventilation system |
| CN202756057U (en) * | 2012-07-17 | 2013-02-27 | 天津雷沃重工集团股份有限公司 | Oil-gas separating structure used for engine crankcase |
| CN105221214A (en) * | 2015-10-26 | 2016-01-06 | 潍柴西港新能源动力有限公司 | A kind of deaerator |
-
2020
- 2020-10-29 CN CN202011180054.2A patent/CN112228186A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008028173A1 (en) * | 2008-06-12 | 2009-01-22 | Daimler Ag | Centrifugal oil separator for use as chain wheel of valve gear, has separating chamber formed inside housing, and moment coupling structures cooperating with axial fasteners, where housing includes wall section designed as tooth |
| CN201301744Y (en) * | 2008-11-19 | 2009-09-02 | 中国第一汽车集团公司 | Oil-gas separator structure |
| CN202756057U (en) * | 2012-07-17 | 2013-02-27 | 天津雷沃重工集团股份有限公司 | Oil-gas separating structure used for engine crankcase |
| CN102840007A (en) * | 2012-08-29 | 2012-12-26 | 东风汽车有限公司 | Crankcase ventilation system |
| CN105221214A (en) * | 2015-10-26 | 2016-01-06 | 潍柴西港新能源动力有限公司 | A kind of deaerator |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210115 |
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| RJ01 | Rejection of invention patent application after publication |