CN103184912B - Oil-gas separation system for engine crankcase - Google Patents
Oil-gas separation system for engine crankcase Download PDFInfo
- Publication number
- CN103184912B CN103184912B CN201110450856.5A CN201110450856A CN103184912B CN 103184912 B CN103184912 B CN 103184912B CN 201110450856 A CN201110450856 A CN 201110450856A CN 103184912 B CN103184912 B CN 103184912B
- Authority
- CN
- China
- Prior art keywords
- oil
- gas
- gas separation
- separation system
- deaerator
- 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.)
- Active
Links
Abstract
The invention discloses an oil-gas separation system for an engine crankcase. The oil-gas separation system for the engine crankcase comprises two stages of oil-gas separation structures. The oil-gas separation system consists of a first-stage separation system and a second-stage separation system, wherein the first-stage separation system is also called a pre-separation system and is mainly responsible for removing larger oil particles in a bypass gas mixture so as to relieve the working pressure of the second-stage separation system; the second-stage separation system is responsible for removing most of oil particles in the gas mixture treated by the first-stage separation system, and when necessary, the bypass gas enters an intake system of an engine through a pressure regulating valve. For guaranteeing the long-term reliable operation of a whole engine ventilating system, the dual separation system plays an important role. According to the dual oil-gas separation system, the oil-gas mixture of the engine can be more fully and efficiently separated.
Description
Technical field
The present invention relates to engine oil gas separation field, particularly a kind of engine crankcase oil gas separation system.
Background technique
Along with the cry of energy-saving and emission-reduction grows to even greater heights, Abgasgesetz is also more and more stricter, and state III rules and regulations diesel engine for automobile must adopt the PCV system of enclosed.Normally, the mixed gas that engine crankcase the contains a large amount of machine oil particle generally direct outlet by cylinder head cover directly enters into suction tude, the mixed gas way of output of this crankcase can not be removed the machine oil in " bypass mixed gas " clean, will cause that the PM discharge amount of diesel engine raises, engine oil consumption is high and the adverse consequences such as air filter blocking.
Summary of the invention
The present invention solve technical problem be to provide a kind of can make the Oil-gas Separation of fuel-air mixture more fully, more efficient engine crankcase oil gas separation system.
For achieving the above object, according to the invention provides a kind of engine crankcase oil gas separation system, it is characterized in that, comprising: two-stage gas oil separation structure, wherein:
Primary oil gas separation structure comprises: cylinder head cover, dividing plate and outgoing gas connection tube; The side of described cylinder head cover is provided with the Oil-gas Separation groove with labyrinth door; Described dividing plate covers on described Oil-gas Separation groove, and one end has inlet hole, and middle part has inclination oil-collecting groove, and the extreme lower position of described oil-collecting groove offers oil outlet; Described outgoing gas connection tube is connected to one end of described Oil-gas Separation groove;
Secondary gas oil separation structure comprises: deaerator and separator pressure regulator valve; Described deaerator comprises: get rid of oil drum, the first suction tude, outlet pipe and return tube; The described oil drum that gets rid of comprises: inverted cylindrical part and be connected to this cylindrical part lower end and the tapered portion of downward adduction; Described suction tude tangent is connected on the sidewall upper of cylindrical part mutually, and described outlet pipe inserts the roof of cylindrical part, and described return tube is communicated with in the lower end of tapered portion; Described separator pressure regulator valve comprises: housing, dunnage, diaphragm, upper cover and spring; The two side of described housing is communicated with steam outlet pipe and the second suction tude respectively, the upper end-hole that described upper cover lid is located at housing forms Seal cage, described Seal cage is separated into air-inlet cavity and outlet chamber by described diaphragm, described steam outlet pipe is communicated with outlet chamber, described second suction tude is communicated with air-inlet cavity, described dunnage is pressed on diaphragm, and described spring is arranged between dunnage and inner walls; The outlet pipe of described deaerator is connected with the second suction tude of separator pressure regulator valve; The described steam outlet pipe of separator pressure regulator valve is connected with the air filter of engine aspirating system; The return tube of described deaerator is connected to the oil sump of trapped fuel device or motor;
The outgoing gas connection tube of described primary oil gas separation structure is connected with the deaerator suction tude of described secondary gas oil separation structure.
Further, multiple baffle plate offering the vent slot that staggers is arranged at intervals with in Oil-gas Separation groove to form described labyrinth door.
Further, dividing plate is covered on described Oil-gas Separation groove by Liu Ding, and sealant sealing is coated in edge.
Further, the outlet pipe of deaerator is connected with the second suction tude of separator pressure regulator valve by rubber pipe; The outgoing gas connection tube of described primary oil gas separation structure is connected by the deaerator suction tude of rubber pipe with described secondary gas oil separation structure.
Further, deaerator is bolted on engine body, and described separator pressure regulator valve is fixed on engine body by bolt and support.
According to technological scheme of the present invention, because this oil and gas separating system is made up of one-level piece-rate system and the second-order separation system, one-level piece-rate system is also known as pre-separating system, and the larger elaioleucite in " bypass mixed gas " is removed, to alleviate the working pressure of the second-order separation system by primary responsibility; The second-order separation system is then responsible for the most elaioleucites in the mixed gas of one-level piece-rate system process to remove, and if desired, bypass gases enters the gas handling system of motor through pressure regulator valve.This dual piece-rate system, for long-term, the reliable operation that ensure whole engine breathing system, has important function.Dual oil and gas separating system make engine oil gas mixed gas separation more fully, more efficient.
Accompanying drawing explanation
Fig. 1 is the structural representation of the primary oil gas separation structure according to engine crankcase oil gas separation system of the present invention;
Fig. 2 is the sectional view in the A-A direction of Fig. 1;
Fig. 3 is the cylinder head cover structural representation of the primary oil gas separation structure according to engine crankcase oil gas separation system of the present invention;
Fig. 4 is the diaphragm structure schematic diagram of the primary oil gas separation structure according to engine crankcase oil gas separation system of the present invention;
Fig. 5 is the sectional view in the B-B direction of Fig. 4;
Fig. 6 is the partial sectional view in the C-C direction of Fig. 4;
Fig. 7 is the axial sectional structure schematic diagram of the outgoing gas connection tube of primary oil gas separation structure according to engine crankcase oil gas separation system of the present invention;
Fig. 8 is the perspective view of the deaerator of secondary gas oil separation structure according to engine crankcase oil gas separation system of the present invention;
Fig. 9 is the plan structure schematic diagram of the deaerator of secondary gas oil separation structure according to engine crankcase oil gas separation system of the present invention;
Figure 10 is the sectional view in the D-D direction of Fig. 9;
Figure 11 is the main TV structure schematic diagram of the deaerator of secondary gas oil separation structure according to engine crankcase oil gas separation system of the present invention;
Figure 12 is the sectional view in the E-E direction of Figure 11;
Figure 13 is the plan structure schematic diagram of the separator pressure regulator valve of secondary gas oil separation structure according to engine crankcase oil gas separation system of the present invention;
Figure 14 is the left TV structure schematic diagram of the separator pressure regulator valve of secondary gas oil separation structure according to engine crankcase oil gas separation system of the present invention;
Figure 15 is the sectional view in the F-F direction of Figure 13;
Figure 16 is the partial sectional view in the G-G direction of Figure 15;
Figure 17 is the assembly structure schematic diagram of the secondary gas oil separation structure according to engine crankcase oil gas separation system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Referring to Fig. 1 and Fig. 2, this engine crankcase oil gas separation system comprises two-stage gas oil separation structure, and wherein, primary oil gas separation structure comprises: cylinder head cover 1, dividing plate 2 and outgoing gas connection tube 3.As shown in Figure 3, Oil-gas Separation groove is provided with on the right side of cylinder head cover 1, be arranged at intervals with multiple transverse baffle 11 along airflow direction in this Oil-gas Separation groove, adjacent two baffle plates 11 offer the vent slot (being opened in left side or right side respectively) staggered, to form multiple labyrinth door; The upper portion side wall of Oil-gas Separation groove offers ventilating hole, and outgoing gas connection tube 3 (as shown in Figure 7) is arranged on this ventilating hole.As shown in Figures 4 to 6, dividing plate 2 is rectangular plate-like, and right part has inlet hole 21; Middle part has the inclination oil-collecting groove 22 that left and right extends, and oil-collecting groove 22 is for being stamped to form, and the extreme lower position in the middle part of oil-collecting groove 22 offers oil outlet 23.Dividing plate 2 is covered on the Oil-gas Separation groove of cylinder head cover 1 by Liu Ding, and sealant sealing is coated in edge, to form the Oil-gas Separation room of primary oil gas separation structure.
Secondary gas oil separation structure comprises: deaerator 4 and separator pressure regulator valve 5.Wherein, as shown in Fig. 8 to Figure 12, deaerator 4 comprises: get rid of oil drum 41, suction tude 42, outlet pipe 43 and return tube 44.Get rid of oil drum 41 to comprise: inverted cylindrical part and be connected to this cylindrical part lower end and the tapered portion of downward adduction; Suction tude 42 tangent is connected on the sidewall upper (as shown in figs. 9 and 12) of cylindrical part mutually, and outlet pipe 43 inserts the roof of cylindrical part, and return tube 44 is communicated with the lower end in tapered portion.The side wall lower ends of cylindrical part is also fixed with fixed plate.
As shown in Figure 13 to Figure 16, separator pressure regulator valve 5 comprises: housing 51, dunnage 52, diaphragm 53, upper cover 54 and spring 55.The left and right sidewall of housing 51 is communicated with steam outlet pipe 56 and suction tude 57 respectively, the upper end-hole that upper cover 54 lid is located at housing 51 forms Seal cage, sealing chamber is separated into air-inlet cavity and outlet chamber by diaphragm 53 again, steam outlet pipe 56 is communicated with outlet chamber, suction tude 57 is communicated with air-inlet cavity, dunnage 52 is pressed on diaphragm 53, and spring 55 is arranged between dunnage 52 and housing 51 inwall.
As shown in figure 17, the outgoing gas connection tube 3 of primary oil gas separation structure is connected with the suction tude 42 of deaerator 4 by rubber pipe 6; The outlet pipe 43 of deaerator 4 is connected with the suction tude 57 of separator pressure regulator valve 5 by rubber pipe 7, and the steam outlet pipe 56 of separator pressure regulator valve 5 is connected with the air filter of engine aspirating system; The return tube 44 of deaerator 4 is connected to the oil sump of trapped fuel device or motor.Deaerator 4 is bolted on engine body, and separator pressure regulator valve 5 is fixed on engine body by bolt and support 8.
When the inlet hole 21 of fuel-air mixture from the dividing plate 2 of primary oil gas separation structure enters, the labyrinth door that baffle plate 11 on cylinder head cover 1 is formed, due to the choked flow of this labyrinth door, the speed of fuel-air mixture reduces suddenly near baffle plate 1, this makes oil droplet in oil gas separate out on baffle plate 1, and due to the effect of gravity, the oil droplet of precipitation is pooled to oil-collecting groove 22 li, then be back to motor via oil-collecting groove 22 by oil outlet 23, reach the machine oil particle object in separation oil and gas mixed gas like this.
Gas through separated oil particle continues forward, enter the outgoing gas connection tube 3 be arranged on engine air cylinder cap 1, because fuel-air mixture is from the catwalk of cylinder head cover chamber through outgoing gas connection tube 3, the actual internal area of gas diminishes, the flow velocity of gas is improved, make the passage of outgoing gas connection tube 3 relatively form negative pressure with cylinder head cover 1 chamber, such machine oil directly flows out the difficulty increase of cylinder head cover, carries out Oil-gas Separation further.Primary oil gas separation structure improves " bypass mixed gas " flow velocity in Oil-gas Separation indoor, increases the touch opportunity of elaioleucite and chamber wall, and the effect of recycling gravity, makes larger machine oil particle be separated from mixed gas, thus reaches the object being separated elaioleucite.And alleviate the pressure of the deaerator of the second-order separation system.
The fuel-air mixture of further separation enters deaerator 4 through rubber pipe 6 by suction tude 42, fuel-air mixture is at a high speed getting rid of rotation oil drum 41 in, from outgoing gas connection tube 3 flow out high-pressure oil gas mixed gas enter into deaerator 4 get rid of oil drum 41 after, its pressure diminishes, volume becomes suddenly large, temperature reduces, and the mist of oil in waste gas becomes tiny oil droplet.Because this suction tude connects with the oil drum tangent that gets rid of of deaerator, the inwall that oily is known from experience along getting rid of oil drum 41 ceaselessly does circumnutation, makes oil droplet have sufficient chance and contact internal walls also to condense to the internal face getting rid of oil drum 41.Oil gas is in the process rotated, its can move down toward direction at the bottom of bucket gradually, gradient is there is owing to getting rid of oil drum, more down radius is less, learn according to centrifugal force formula F=m*v2/r, the centrifugal force of oil droplet is also increasing, thus makes more tiny oil droplet also can be thrown to a barrel wall under the effect of larger centrifugal force, the return tube 44 that condensation is collected to deaerator 4 flow back into motor, and the fuel-air mixture be separated further enters separator pressure regulator valve 5 by outlet pipe 43 through suction tude 57.
Separator pressure regulator valve 5 act as the engine interior pressure balance point determined according to engine performance exploitation, by the control of Regulation spring elastic force, determine the pressure of pressure regulator valve air inlet/outlet.When from deaerator 4 gas out lower than the suction pressure of gas handling system and negative pressure time, the air of outside gas handling system air filter makes spring 55 spring force reduce and be relaxed; When deaerator gas is out malleation, deaerator gas push diaphragm 53 out and dunnage 52, such spring 55 spring force raises and compresses further, gas is discharged enter engine aspirating system and realize waste gas circulation, this ensure that the sealing of whole the second-order separation structure and oil-gas separation efficiency and sealing problem.
Because this oil and gas separating system is made up of one-level piece-rate system and the second-order separation system, one-level piece-rate system is also known as pre-separating system, and the larger elaioleucite in " bypass mixed gas " is removed, to alleviate the working pressure of the second-order separation system by primary responsibility; The second-order separation system is then responsible for the most elaioleucites in the mixed gas of one-level piece-rate system process to remove, and if desired, bypass gases enters the gas handling system of motor through pressure regulator valve.This dual piece-rate system, for long-term, the reliable operation that ensure whole engine breathing system, has important function.Dual oil and gas separating system make engine oil gas mixed gas separation more fully, more efficient.
Be only a specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (4)
1. an engine crankcase oil gas separation system, is characterized in that, comprising: two-stage gas oil separation structure, wherein:
Primary oil gas separation structure comprises: cylinder head cover, dividing plate and outgoing gas connection tube; The side of described cylinder head cover is provided with the Oil-gas Separation groove with labyrinth door; Described dividing plate covers on described Oil-gas Separation groove, and one end has inlet hole, and middle part has inclination oil-collecting groove, and the extreme lower position of described oil-collecting groove offers oil outlet; Described outgoing gas connection tube is connected to one end of described Oil-gas Separation groove;
Secondary gas oil separation structure comprises: deaerator and separator pressure regulator valve; Described deaerator comprises: get rid of oil drum, the first suction tude, outlet pipe and return tube; The described oil drum that gets rid of comprises: inverted cylindrical part and be connected to this cylindrical part lower end and the tapered portion of downward adduction; Described suction tude tangent is connected on the sidewall upper of cylindrical part mutually, and described outlet pipe inserts the roof of cylindrical part, and described return tube is communicated with in the lower end of tapered portion; Described separator pressure regulator valve comprises: housing, dunnage, diaphragm, upper cover and spring; The two side of described housing is communicated with steam outlet pipe and the second suction tude respectively, the upper end-hole that described upper cover lid is located at housing forms Seal cage, described Seal cage is separated into air-inlet cavity and outlet chamber by described diaphragm, described steam outlet pipe is communicated with outlet chamber, described second suction tude is communicated with air-inlet cavity, described dunnage is pressed on diaphragm, and described spring is arranged between dunnage and inner walls; The outlet pipe of described deaerator is connected with the second suction tude of separator pressure regulator valve; The described steam outlet pipe of separator pressure regulator valve is connected with the air filter of engine aspirating system; The return tube of described deaerator is connected to the oil sump of trapped fuel device or motor;
The outgoing gas connection tube of described primary oil gas separation structure is connected with the deaerator suction tude of described secondary gas oil separation structure;
Described deaerator is bolted on engine body, and described separator pressure regulator valve is fixed on engine body by bolt and support.
2. engine crankcase oil gas separation system according to claim 1, is characterized in that, is arranged at intervals with multiple baffle plate offering the vent slot that staggers to form described labyrinth door in described Oil-gas Separation groove.
3. engine crankcase oil gas separation system according to claim 1, is characterized in that, described dividing plate is covered on described Oil-gas Separation groove by Liu Ding, and sealant sealing is coated in edge.
4. engine crankcase oil gas separation system according to claim 1, is characterized in that, the outlet pipe of described deaerator is connected with the second suction tude of separator pressure regulator valve by rubber pipe; The outgoing gas connection tube of described primary oil gas separation structure is connected by the deaerator suction tude of rubber pipe with described secondary gas oil separation structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110450856.5A CN103184912B (en) | 2011-12-29 | 2011-12-29 | Oil-gas separation system for engine crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110450856.5A CN103184912B (en) | 2011-12-29 | 2011-12-29 | Oil-gas separation system for engine crankcase |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103184912A CN103184912A (en) | 2013-07-03 |
| CN103184912B true CN103184912B (en) | 2015-06-03 |
Family
ID=48676314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110450856.5A Active CN103184912B (en) | 2011-12-29 | 2011-12-29 | Oil-gas separation system for engine crankcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103184912B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939480A (en) * | 2018-01-10 | 2018-04-20 | 广西玉柴机器股份有限公司 | Diesel engine twin-stage oil and gas separating system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080105494A1 (en) * | 2006-10-30 | 2008-05-08 | Kai-Uwe Lemke | Adaptive oil separator |
| CN101187322A (en) * | 2006-11-20 | 2008-05-28 | 现代自动车株式会社 | Closed crankcase ventilation system |
| KR20090064007A (en) * | 2007-12-14 | 2009-06-18 | 현대자동차주식회사 | Oil separator typed cyclone |
| CN101463742A (en) * | 2009-01-14 | 2009-06-24 | 奇瑞汽车股份有限公司 | Oil-gas separating device of cylinder cap |
| KR20100123323A (en) * | 2009-05-15 | 2010-11-24 | 인지컨트롤스 주식회사 | Separator for internal-combustion engine |
| CN202402097U (en) * | 2011-12-29 | 2012-08-29 | 广西玉柴机器股份有限公司 | Oil-gas separation system for engine crankcase |
-
2011
- 2011-12-29 CN CN201110450856.5A patent/CN103184912B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080105494A1 (en) * | 2006-10-30 | 2008-05-08 | Kai-Uwe Lemke | Adaptive oil separator |
| CN101187322A (en) * | 2006-11-20 | 2008-05-28 | 现代自动车株式会社 | Closed crankcase ventilation system |
| KR20090064007A (en) * | 2007-12-14 | 2009-06-18 | 현대자동차주식회사 | Oil separator typed cyclone |
| CN101463742A (en) * | 2009-01-14 | 2009-06-24 | 奇瑞汽车股份有限公司 | Oil-gas separating device of cylinder cap |
| KR20100123323A (en) * | 2009-05-15 | 2010-11-24 | 인지컨트롤스 주식회사 | Separator for internal-combustion engine |
| CN202402097U (en) * | 2011-12-29 | 2012-08-29 | 广西玉柴机器股份有限公司 | Oil-gas separation system for engine crankcase |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103184912A (en) | 2013-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101549331B (en) | Composite oil gas separation method and composite oil gas separator | |
| CN100560952C (en) | The improved discharge equipment that is used for engine oil separator | |
| CN106457102B (en) | Compressed air purification device | |
| CN101539045A (en) | Gas and oil separating plant for internal combustion engine | |
| MXPA01012763A (en) | Filter assembly with sump and check valve. | |
| CN100414077C (en) | Oil-gas separator | |
| MXPA02010891A (en) | Safety shut-off valve for crankcase emission control system. | |
| CN201255029Y (en) | Oil-gas separator | |
| CN109139428B (en) | Oil-gas separator and compressor with same | |
| CN102705040A (en) | Independent external-mounting maintenance-free multi-stage oil and gas separator assembly | |
| CN201705426U (en) | Oil-gas prefilter of engine crankcase | |
| US8156926B2 (en) | Systems and methods for filtering crankcase fumes | |
| CN107939480A (en) | Diesel engine twin-stage oil and gas separating system | |
| CN103184912B (en) | Oil-gas separation system for engine crankcase | |
| CN210799082U (en) | Fine separation structure of oil-gas separator of engine | |
| CN206309444U (en) | A kind of Oil-gas Separation assembly structure in engine crankshaft ventilation system | |
| CN219111210U (en) | Air compressor machine oil gas separation device | |
| CN202402097U (en) | Oil-gas separation system for engine crankcase | |
| KR20080093655A (en) | Filter exchange type of oil separator | |
| CN202520397U (en) | Oil and fog separating device of waste gas of engine | |
| JP2006152890A (en) | Oil separating structure and internal combustion engine | |
| US7096847B1 (en) | Oil separator for internal combustion engine | |
| CN209308792U (en) | A kind of oil and gas separating system and engine assembly | |
| CN2888089Y (en) | Oil-gas separating device | |
| CN2716516Y (en) | Balanced type oil-gas separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |