CN101984224A - Labyrinth type oil-gas pre-separating system - Google Patents
Labyrinth type oil-gas pre-separating system Download PDFInfo
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- CN101984224A CN101984224A CN 201010538839 CN201010538839A CN101984224A CN 101984224 A CN101984224 A CN 101984224A CN 201010538839 CN201010538839 CN 201010538839 CN 201010538839 A CN201010538839 A CN 201010538839A CN 101984224 A CN101984224 A CN 101984224A
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- oil
- gas
- separating
- chamber cover
- rocker arm
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Abstract
The invention discloses a labyrinth type oil-gas pre-separating system, which enables exhaust gas in a crankcase to enter into a breather after the exhaust gas is subject to oil-gas pre-separation. The oil-gas pre-separating system is arranged in a rocker chamber cover of a combustion engine and is formed by combining a rocker chamber pre-separating cavity, an oil-gas pre-separating front baffle, an oil-gas pre-separating rear baffle, a separator baseplate and a U-shaped oil return pipe. The segregation board in the rocker chamber cover pre-separating cavity is arranged between the front baffle and the rear baffle to form the inlet/outlet of the exhaust gas; under the actions of condensation and gravity, oil steam from the crankcase is absorbed on the baffles, the exhaust gas flows towards the outlet with relatively low pressure and then enters the breather, and in other words, primarily effective oil-gas separation is finished in the system before the exhaust gas enters into the breather. The system enables the exhaust gas entering into the breather to have low oil steam content, thus meeting the use requirements of the breather, thereby ensuring that the pressure of the crankcase is kept within a designated limitation range, oil steam does not flow into the crankcase inversely, and the oil steam is fully separated, thus effectively reducing engine oil consumption and lowering harmful tail gas emission.
Description
Technical field
The invention belongs to internal combustion engine component, be specifically related to the system of oil gas pre-separation in a kind of diesel engine crankcase.
Background technique
As everyone knows, countries in the world strengthen day by day to the attention of environmental protection, and China also significantly improves for the standard of automotive emission, and relevant rules are also strict day by day.In order to satisfy automobile exhaust emission standard, the cylinder pressure of explosion of diesel engine is all in continuous lifting.During the diesel oil engine operation, the pressurized gas that diesel combustion forms promote the motion of cylinder inner carrier, thereby driving crankshaft rotating, pair clearance in the cylinder causes pressurized gas bleed crankcase, gear chamber, oil sump; in the cavity volume that rocker arm chamber cover etc. communicates; cause the cavity volume internal air pressure to raise, cause faults such as bad seals.Too high for solving crankcase pressure, motor all lowers gas pressure in the crankcase by installing resuscitation apparatus additional, and resuscitation apparatus also all has strict requirement to oil vapor size of grain in the waste gas in the crankcase and density.When the content of oil vapor during greater than the function restriction of resuscitation apparatus, just having the part oil vapor can not be separated, discharges along the resuscitation apparatus air outlet.This measure will bring consumption of lubricating oil to increase, and increase the weight of environmental pollution simultaneously again.The system that waste gas oil gas is effectively separated proposed by the invention can make the Oil-gas Separation problem be resolved.
Summary of the invention
The purpose of this invention is to provide a kind of system that enters resuscitation apparatus in the crankcase after the pre-separation of waste gas process oil gas again that makes.
Below in conjunction with accompanying drawing principle of the present invention and structure are described.Mazy type oil gas pre-separation system has base plate, front and rear baffle, return tube, rocker arm chamber cover pre-separating cavity and bolt etc.This oil gas pre-separation system place internal-combustion engine rocker arm chamber cover in, combine by rocker arm chamber cover pre-separating cavity, mazy type oil gas pre-separation front and rear baffle (mazy type is meant full of twists and turns exhaust steam passage, with the enforcing condensation effect), separator base plate and U type return tube.Structurally rocker arm chamber cover pre-separating cavity places the top of separator base plate to constitute a space as outer cover, and rocker arm chamber cover pre-separating cavity is by bolt and separator base plate sealing and fixing.Isolating plate in the rocker arm chamber cover pre-separating cavity places between front screen and the backboard, and the gap between rocker arm chamber cover pre-separating cavity lower end and the forward and backward baffle plate forms inlet, outlet.In order to reduce the resuscitation apparatus oil vapor that enters, oil gas pre-separation front and rear baffle is installed in the pre-separating cavity of rocker arm chamber cover, utilize trapped fuel in the U type return tube as oil sealing, waste gas in the crankcase is entered behind the oil gas pre-separate device only into and out of two passages.Front and rear baffle is except as cutting apart turnover the passage, and it mainly acts on is to be used for condensing oil droplet in the absorption waste gas.The principle of oil gas pre-separation is: the waste gas of crankcase inner high voltage is full of the motor inner chamber, makes the suction port pressure of oil gas pre-separate device be higher than air outlet pressure, and the interior waste gas of crankcase then enters the oil gas pre-separate device and outwards flows.Gas mixture is when mazy type oil gas pre-separation baffle plate, because condensation and action of gravity are adsorbed on the baffle plate, waste gas can continue to flow to the relatively low air outlet of pressure, enters resuscitation apparatus then.Just before entering resuscitation apparatus, carried out primary oil gas and effectively separated.
Characteristics of the present invention and beneficial effect are:Simple in structure, little to the change of diesel engine rocker arm chamber cover because the oil vapor of waste gas in the crankcase has been carried out very effective pre-separation, so that the oil vapor content that enters in the resuscitation apparatus waste gas is very low, satisfied the usage requirement of resuscitation apparatus.Mazy type oil gas pre-separate device adopts process for stamping and forming, and with low cost being easy to promoted.
Description of drawings
Fig. 1 is a stereochemical structure sketch of the present invention.
Fig. 2 is working principle of the present invention and structural drawing.
Embodiment
Below in conjunction with accompanying drawing and by embodiment structure of the present invention is described further, but the content that the present invention is contained is not limited to following embodiment.
With the four-cylinder diesel engine is example.The structure of mazy type oil gas pre-separation system is to be provided with front screen 2 and backboard 3 above the separator base plate 1; Be provided with U type return tube 4 below the separator base plate 1, rocker arm chamber cover pre-separating cavity 5 places the top of separator base plate 1 to constitute a space as outer cover.Rocker arm chamber cover pre-separating cavity is by bolt 6 and separator base plate 1 sealing and fixing.Form mazy type oil gas pre-separation system by rocker arm chamber cover pre-separating cavity 5, separator base plate 1, front screen 2, backboard 3 and U type return tube 4.Isolating plate 7 in the rocker arm chamber cover pre-separating cavity 5 places between front screen 2 and the backboard 3.Gap between rocker arm chamber cover pre-separating cavity 5 lower ends and the front screen 2 forms the suction port 8 from waste gas in the crankcase; Gap between rocker arm chamber cover pre-separating cavity 5 lower ends and the backboard 3 forms gas port 9.Rocker arm chamber cover pre-separating cavity 5 be fixed in rocker arm chamber cover seat 10 above.
The profile phase of the edge of base plate and rocker arm chamber cover pre-separating cavity coincide in the mazy type oil gas pre-separation system, will be in rocker arm chamber cover pre-separating cavity and base plate sealing and fixing by bolt.During engine running, the suction port that waste gas forms by mazy type oil gas pre-separation front screen and rocker arm chamber cover pre-separating cavity in the crankcase enters the Oil-gas Separation chamber of oil gas pre-separation baffle plate, oil vapor can be because condensation and action of gravity in flow process, be adsorbed on the baffle plate, the machine oil that adsorbs on the baffle plate can be got back to crankcase from U type return tube.And the machine oil of depositing can stop the interior waste gas of crankcase by the reverse discharging of U type return tube in the U type return tube.Crankcase waste gas has effectively stayed machine oil to get off through oil gas pre-separation system, goes out and waste gas arranged.Can guarantee promptly that by installing oil gas pre-separation system additional crankcase pressure remains in the predetermined restricted, can guarantee that again machine oil can not flow to outside the motor by the mode of oil vapor, and cause the too high and environmental pollution of engine oil consumption.
The baffle plate of oil gas pre-separate device adopts the panel beating material, U type return tube is a steel pipe, the oil gas pre-separate device can be according to exhaust gas pressure, flow in the crankcase of coupling motor, mazy type oil gas pre-separation baffle plate is adjusted, guarantee abundant separating oil steam, effectively reduce the engine oil consumption of motor and reduce harmful exhaust emissions.
Claims (2)
1. labyrinth type oil-gas pre-separating system; Has base plate; Baffle plate; Oil return pipe; Rocker arm chamber cover pre-separating cavity and bolt; It is characterized in that being provided with above the separator base plate (1) front apron (2) and backboard (3); Be provided with U-shaped oil return pipe (4) below the separator base plate (1); Rocker arm chamber cover pre-separating cavity (5) places the top of separator base plate (1) to consist of a space as outer cover; The rocker arm chamber cover pre-separating cavity is fixing with separator base plate (1) sealing by bolt (6); By rocker arm chamber cover pre-separating cavity (5); Separator base plate (1); Front apron (2); Backboard (3) and U-shaped oil return pipe (4) form labyrinth type oil-gas pre-separating system; Division board (7) in the rocker arm chamber cover pre-separating cavity (5) places between front apron (2) and the backboard (3); Gap between rocker arm chamber cover pre-separating cavity (5) lower end and the front apron (2) forms air inlet (8); Gap between rocker arm chamber cover pre-separating cavity (5) lower end and the backboard (3) forms gas port (9).
2. according to the described mazy type oil gas of claim 1 pre-separation system, it is characterized in that described rocker arm chamber cover pre-separating cavity (5) is fixed in above the rocker arm chamber cover seat (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010538839 CN101984224A (en) | 2010-11-11 | 2010-11-11 | Labyrinth type oil-gas pre-separating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010538839 CN101984224A (en) | 2010-11-11 | 2010-11-11 | Labyrinth type oil-gas pre-separating system |
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| Publication Number | Publication Date |
|---|---|
| CN101984224A true CN101984224A (en) | 2011-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010538839 Pending CN101984224A (en) | 2010-11-11 | 2010-11-11 | Labyrinth type oil-gas pre-separating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437855A (en) * | 2013-07-16 | 2013-12-11 | 东风朝阳朝柴动力有限公司 | Two-stage oil-gas separation diesel engine breathing system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005201189A (en) * | 2004-01-19 | 2005-07-28 | Nissan Diesel Motor Co Ltd | Rocker cover device |
| CN1955444A (en) * | 2005-10-28 | 2007-05-02 | 浙江吉利汽车研究院有限公司 | Labyrinth oil gas separator |
| CN101131133A (en) * | 2007-09-20 | 2008-02-27 | 奇瑞汽车有限公司 | Sprocket wheel shroud with crankcase ventilation labyrinth |
| JP2008169759A (en) * | 2007-01-11 | 2008-07-24 | Yanmar Co Ltd | Engine |
| 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 |
| US20090038579A1 (en) * | 2006-12-01 | 2009-02-12 | Toyota Engineering & Manufacturing North America, Inc. | Engine head cover assembly having an integrated oil separator and a removable cover |
| CN201843663U (en) * | 2010-11-11 | 2011-05-25 | 东风朝阳柴油机有限责任公司 | Labyrinth gas-oil predissociation device |
-
2010
- 2010-11-11 CN CN 201010538839 patent/CN101984224A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005201189A (en) * | 2004-01-19 | 2005-07-28 | Nissan Diesel Motor Co Ltd | Rocker cover device |
| CN1955444A (en) * | 2005-10-28 | 2007-05-02 | 浙江吉利汽车研究院有限公司 | Labyrinth oil gas separator |
| US20090038579A1 (en) * | 2006-12-01 | 2009-02-12 | Toyota Engineering & Manufacturing North America, Inc. | Engine head cover assembly having an integrated oil separator and a removable cover |
| JP2008169759A (en) * | 2007-01-11 | 2008-07-24 | Yanmar Co Ltd | Engine |
| CN101131133A (en) * | 2007-09-20 | 2008-02-27 | 奇瑞汽车有限公司 | Sprocket wheel shroud with crankcase ventilation labyrinth |
| 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 |
| CN201843663U (en) * | 2010-11-11 | 2011-05-25 | 东风朝阳柴油机有限责任公司 | Labyrinth gas-oil predissociation device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437855A (en) * | 2013-07-16 | 2013-12-11 | 东风朝阳朝柴动力有限公司 | Two-stage oil-gas separation diesel engine breathing system |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110309 |