CN105003320B - A kind of oil-gas separating device for engine improved structure - Google Patents
A kind of oil-gas separating device for engine improved structure Download PDFInfo
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- CN105003320B CN105003320B CN201510493454.1A CN201510493454A CN105003320B CN 105003320 B CN105003320 B CN 105003320B CN 201510493454 A CN201510493454 A CN 201510493454A CN 105003320 B CN105003320 B CN 105003320B
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Abstract
The present invention relates to a kind of oil-gas separating device for engine improved structure, include cylinder cap shield, have Oil-gas Separation room in the inner surface setting of the cylinder cap shield；The Oil-gas Separation room is included positioned at the first Oil-gas Separation room and the second Oil-gas Separation room positioned at exhaust side of air inlet side；The first Oil-gas Separation room is level Four isolating construction；The second Oil-gas Separation room is three-level isolating construction.The present invention is by using level Four isolating construction, and by increasing the structure of cyclonic separation plate group, so that air-fuel mixture gas is when flowing through cyclonic separation plate group, by the setting of curve ruler, air-flow is caused to produce whirlpool, because the gentle density of oil is different, oil is gentle to produce separation in the presence of whirlpool, larger oil droplet after separation directly drops on oil baffle, and small oil droplet then impinges upon cyclone type separation plate surface and flows to orifice plate along its surface, improves the effect of Oil-gas Separation.
Description
Technical field
The invention belongs to technical field of engines, a kind of oil-gas separating device for engine improved structure is particularly related to.
Background technology
In engine operation process, gap and piston and work of a small amount of gas between cylinder wall and piston ring are had
Gap between plug ring is scurried into crankcase, and these gas blowbies can take away the machine oil of piston and cylinder wall surface, pass through air inlet system
System burns again into combustion chamber.But it is due to that machine oil can not burn completely, discharge can be had a negative impact.Therefore it is satisfaction
Emission regulation demands, it is necessary to separate machine oil in gas blowby.
Existing petrol engine is to meet the respiratory system that the requirement of Abgasgesetz uses enclosed, and the engine of early stage leads to
Wind system uses the structure of external oil-gas separator, causes pipeline complicated, arranges too fat to move, runs counter to the integrated lightweight of engine
Development trend.
The cylinder cap cover assembly of existing integrated gas oil separation structure is typically using one to three-level separation, the effect of Oil-gas Separation
The need for fruit substantially meets Abgasgesetz, but as Abgasgesetz is increasingly strict, it is badly in need of oil gas separation more preferable oil gas point
Emission request is met from device structure.
As shown in Figures 1 to 5, in order to realize that machine oil is separated with gas blowby, current Oil-gas Separation technical scheme uses enclosed three
Level isolating construction, be specially：Gs-oil separator is divided into air inlet side separation chamber A and exhaust side separation chamber B, and respectively there is three-level two separation chambers
Isolating construction.
Air inlet side separation chamber includes cylinder cap shield 010, oil baffle 020, the first dividing plate group 011, first baffle 021,
One orifice plate 023, the first tooth form crash panel 012, Pcv valve 013, air inlet side gas outlet I, the first oil return portion 022, air inlet side-inlet
IN1, the second oil return portion 024 and groove 029.
Exhaust side separation chamber includes cylinder cap shield 010, oil baffle 020, second partition group 014, second baffle 025,
Two orifice plates 027, the second tooth form crash panel 015, tubule 016, exhaust side-inlet IN2, exhaust side gas outlet I I, the 3rd oil return
Portion 026, the 4th oil return portion 028.
Prior art can not meet more maximum discharge limit value requirement, and directly resulting in vehicle can not list marketing.On overcoming
The problem of stating, prior art adds independent gs-oil separator to meet discharge standard by using motor cylinder protective shield, so not
Only result in pipeline complicated, arrange too fat to move, and increased cost is excessive.
The content of the invention
The purpose of the present invention is to propose improved technology scheme to existing oil-gas separating device for engine, by the technical program,
In the case of limited increase cost, realize that engine exhaust meets the emission limit requirement of existing regulation.
The present invention is achieved by the following technical solutions：
A kind of oil-gas separating device for engine improved structure, includes cylinder cap shield；Set in the inner surface of the cylinder cap shield
It is equipped with Oil-gas Separation room；
The Oil-gas Separation room is included positioned at the first Oil-gas Separation room of air inlet side and positioned at the second oil gas point of exhaust side
From room；
The first Oil-gas Separation room is level Four isolating construction；The second Oil-gas Separation room is three-level isolating construction；
The first Oil-gas Separation room include the first dividing plate group, first baffle, the first oil baffle, cyclonic separation plate group,
First orifice plate and the first tooth form crash panel；
The two Oil-gas Separations room includes second partition group, second baffle, the second oil baffle, the second orifice plate and the second tooth
Shape crash panel；
The cyclonic separation plate group includes at least three first sketch plates set along fuel-air mixture flow direction；
First sketch plate includes sketch plate body, the first branch and the second branch；
The sketch plate body includes cuboid plate, the first circular arc body, the second circular arc body, three-arc body and the first circle
Cylinder；One end of first cylinder and the first circular arc body is smoothly connected, the other end of first circular arc body and described the
One end of two circular arc bodies is smoothly connected, and the other end of second circular arc body is smoothly connected with one end of the three-arc body,
One end of the other end of the three-arc body and the cuboid plate is smoothly connected；First branch is connected to described second
On the outside of the arc top of circular arc body；Second branch connects with the side of the cuboid plate；First branch and described second
Branch is located at the both sides of the sketch plate body respectively；
If first orifice plate is provided with dry gas via with second orifice plate close to the side of the cylinder cap shield；
Each gas via is bellmouth, and wherein the aperture of air inlet side is more than the aperture of outlet side.
The inwall of each gas via be provided with it is multiple axially through trench structure；Each trench structure
Center line be curve.
The cyclonic separation plate group also includes the second sketch plate；Second sketch plate include the second cylinder and with
The tailgate that second cylinder is smoothly connected；The distance of second sketch plate and adjacent first sketch plate is about two
The half of distance between individual first sketch plate.
One side of the first dividing plate group, a side of the cyclonic separation plate group, first tooth form are hit
One side of one side of plate, a side of the second partition group and the second tooth form crash panel with it is described
The inner surface connection of cylinder cap shield；
The first baffle and first orifice plate with table relative with the cylinder cap shield in first oil baffle
Face is connected；
The second baffle and second orifice plate with table relative with the cylinder cap shield in second oil baffle
Face is connected.
First oil baffle connects as one structure with second oil baffle by connecting plate.
The first oil return portion and the second oil return portion are provided with first oil baffle；Set on second oil baffle
There are the 3rd oil return portion and the 4th oil return portion.
The first oil return portion is located at the same side of first oil baffle with the second oil return portion；3rd oil return
Portion is located at the same side of second oil baffle with the 4th oil return portion.
The height in the first oil return portion is different from the height in the second oil return portion；The height in the 3rd oil return portion with
The height in the 4th oil return portion is different.
First oil baffle and second oil baffle are provided with the flange to the cylinder cap shield direction；Described
Set on flange fluted.
The first venthole is provided with the cylinder cap shield corresponding to the first Oil-gas Separation room；First venthole
Pcv valve is installed；The Pcv valve passes through pipeline and inlet manifold UNICOM；In the cylinder cap corresponding to the second Oil-gas Separation room
The second venthole is provided with shield；Second venthole passes through pipeline and air cleaner outlet side pipeline UNICOM.
The beneficial effects of the invention are as follows：
The application improves oil gas point by being set to level Four isolating construction in the Oil-gas Separation room of cylinder cap shield air inlet side
From effect.
By using level Four isolating construction, and by increasing the structure of cyclonic separation plate group so that air-fuel mixture gas exists
When flowing through cyclonic separation plate group, by the setting of sketch plate, air-flow is caused to produce whirlpool, because the gentle density of oil is different, oil
Gentle that separation is produced in the presence of whirlpool, the larger oil droplet after separation directly drops on oil baffle, and small oil droplet then impinges upon rotation
Wind formula separation plate surface simultaneously flows to orifice plate along its surface, improves the effect of Oil-gas Separation.
On the other hand, the application is by gas via on the first orifice plate and the second orifice plate by being set to bellmouth, and
In gas flow direction, it is more than positioned at the aperture of air inlet side positioned at the aperture of outlet side, such taper pore structure makes
Gas is obtained in by gas via, while gas flow rate is increased, extruding force is increased to the gas of air inlet side, beneficial to small
Oil droplet collects, and gas with higher speed by gas via after, and hit the anti-degree collided with tooth form
Increase, increases, gas flow rate further slows down, so more favourable with the fall of gas pressure after tooth form impaction plates
In the landing of oil droplet, and improve oil gas separation.
Brief description of the drawings
Fig. 1 is that existing technology cylinder cap shield removes structural representation after oil baffle；
Fig. 2 is the internal structure schematic diagram of existing technology cylinder cap almuce belt oil baffle；
Fig. 3 is the structural representation of existing technology oil baffle；
Fig. 4 is the structural representation of another angle of existing technology oil baffle；
Fig. 5 is Fig. 4 E-E sectional views；
Fig. 6 is that cylinder cap shield of the present invention removes the structural representation after oil baffle；
Fig. 7 is that cylinder cap shield of the present invention removes the front view after oil baffle；
Fig. 8 is Fig. 7 F-F sectional views；
Fig. 9 is oil baffle plate structure schematic diagram of the present invention；
Figure 10 is cyclonic separation plate group structure schematic diagram of the present invention；
Figure 11 is cyclonic separation plate group front view of the present invention.
Description of reference numerals
A air inlet sides separation chamber, B exhaust sides separation chamber, 010 cylinder cap shield, 011 first dividing plate group, 012 first tooth form is hit
Plate, 013PCV valves, 014 second partition group, 015 second tooth form crash panel, 016 tubule, 020 oil baffle, 021 first baffle, 022
First oil return portion, 023 first orifice plate, 024 second oil return portion, 025 second baffle, 026 the 3rd oil return portion, 027 second orifice plate,
028 the 4th oil return portion, 029 groove, 100 cylinder cap shields, 200 first Oil-gas Separation rooms, 300 second Oil-gas Separation rooms, 400 first
Oil baffle, 500 second oil baffles, 600 connecting plates, 700 flange, 800 grooves, 900 gas vias, 101 convex tendons, 201 first every
Plate group, 202 first baffles, 203 cyclonic separation plate groups, 204 first orifice plates, 205 first tooth form crash panels, 206PCV valves, 207
One venthole, 208 first oil return portions, 209 second oil return portions, 301 second partition groups, 302 second baffles, 303 second orifice plates,
304 second tooth form crash panels, 305 second ventholes, 306 the 3rd oil return portions, 307 the 4th oil return portions, 2,031 first sketch plates,
2032 second sketch plates, 2,033 first cylinders, 2,034 first branches, 2,035 second branches, 2036 cuboid plates, 2037 the 3rd
Circular arc body, 2,038 second circular arc bodies, 2,039 first circular arc bodies, 2,040 second cylinders, 2041 tailgates.
Embodiment
Describe technical scheme in detail by the following examples, following embodiment be only it is exemplary, only
Explanation and illustration technical scheme can be used for, and be not to be construed as the limitation to technical solution of the present invention.
The present invention provides a kind of oil-gas separating device for engine improved structure, as shown in Fig. 6 to Figure 11, includes cylinder cap shield
100, there is Oil-gas Separation room in the inner surface setting of the cylinder cap shield 100；The cylinder cap shield of the application refers to be integrated with oil gas
The cylinder cap shield of separator, without the cylinder cap shield including not being integrated with gs-oil separator.In the technical scheme of the application,
It is only relevant with the oil-gas separator structure on cylinder cap shield, and the other structures set on cylinder cap shield are prior art,
Not in the protection domain of the application.
The Oil-gas Separation room is included positioned at the first Oil-gas Separation room 200 of air inlet side and the second oil gas positioned at exhaust side
Separation chamber 300.
The first Oil-gas Separation room 200 is level Four isolating construction；The second Oil-gas Separation room 300 is that three-level separates knot
Structure.
The first Oil-gas Separation room 200 includes the first dividing plate group 201, first baffle 202, the first oil baffle 400, rotation
Wind separating plate group 203, the first orifice plate 204 and the first tooth form crash panel 205；Close to the distribution of cylinder cap shroud on first orifice plate 204
There are several gas vias 900 of two rows.First dividing plate group, cyclone type separating plate group, the first tooth form crash panel and the first oil baffle
In face of the uniform surface fixed gap of cylinder cap shield；The number and diameter of gas via, the first dividing plate group, cyclonic separation plate group and
The gap in the gap of one tooth form crash panel and the first oil baffle, first baffle and cylinder cap shield top plate is according to air-fuel mixture throughput
Rationally set.
The two Oil-gas Separations room 300 includes second partition group 301, second baffle 302, the second oil baffle 500, second
The tooth form crash panel 304 of orifice plate 303 and second；Two rows several gas mistakes are distributed with close to cylinder cap shroud on second orifice plate 303
Hole.Second partition group, the second tooth form crash panel and the second oil baffle face the uniform surface fixed gap of cylinder cap shield；Gas via
Number and diameter, the gap of second partition group and the second tooth form crash panel and the second oil baffle, second baffle and cylinder cap shield
The gap of top plate is rationally set according to air-fuel mixture throughput.
First orifice plate 204 and the gas via 900 on second orifice plate 303；Each the gas via is
Bellmouth, the wherein aperture of air inlet side are more than the aperture of outlet side.
The inwall of each gas via be provided with it is multiple axially through trench structure；Each trench structure
Center line be curve.In this application, the shape of bathtub construction and structure all same.In present embodiments, often
The cross section of individual trench structure is square or semicircle, and the depth of trench structure is the 1/10-1/ of diameter at gas via minimum
3。
One side of the first dividing plate group, a side of the cyclonic separation plate group, first tooth form are hit
One side of one side of plate, a side of the second partition group and the second tooth form crash panel with it is described
The inner surface connection of cylinder cap shield.
The first baffle and first orifice plate with table relative with the cylinder cap shield in first oil baffle
Face is connected.
The second baffle and second orifice plate with table relative with the cylinder cap shield in second oil baffle
Face is connected.
The cyclonic separation plate group 203 includes at least three first abnormity set along fuel-air mixture flow direction
Plate 2031；Three first sketch plates perpendicular to the fuel-air mixture flow direction along being placed equidistant, in Fig. 10, with arrow
The lines I2 of head is the flow direction of fuel-air mixture.
First sketch plate 2031 includes sketch plate body, the first branch 2034 and the second branch 2035.
The sketch plate body includes cuboid plate 2036, the first circular arc body 2039, the second circular arc body 2038, the 3rd circle
The cylinder 2033 of arc body 2037 and first；One end of first cylinder and the first circular arc body is smoothly connected, first circle
One end of the other end of arc body and second circular arc body is smoothly connected, and the other end of second circular arc body is with the described 3rd circle
One end of arc body is smoothly connected, and one end of the other end of the three-arc body and the cuboid plate is smoothly connected；Described
One branch is connected on the outside of the arc top of second circular arc body；Second branch connects with the side of the cuboid plate；Institute
State the both sides that the first branch is located at the sketch plate body with second branch respectively.In the present embodiment, the first circular arc body
Curvature be more than the curvature of three-arc body, the curvature of the first circular arc body is less than the curvature of the second circular arc body.
The cyclonic separation plate group 203 also includes the second sketch plate 2032；Second sketch plate 2032 includes
Two cylinders 2040 and the tailgate 2041 being smoothly connected with second cylinder；Second sketch plate and adjacent described the
The distance of one sketch plate is the half of distance between two first sketch plates.
In the present embodiment, the second sketch plate is arranged at place relative with the second circular arc body, i.e. the second sketch plate and first point
Branch is located at the both sides of sketch plate body respectively, wherein, the second cylinder of the second sketch plate is away from sketch plate body, and tailgate is approached
In sketch plate body；That is the gap between the second cylinder and sketch plate body is more than between tailgate end and sketch plate body
Gap.
In the present embodiment, the height of the first sketch plate is identical, and the cuboid plate included by the first sketch plate body
2036th, the height also phase of the first circular arc body 2039, the second circular arc body 2038, the cylinder 2033 of three-arc body 2037 and first
Together；Meanwhile, the second sketch plate is identical with the height of the first sketch plate.The second cylinder in second sketch plate is located under air-flow
Trip, the direction that it is placed is substantially in the same direction with three-arc body.
Air inlet side increase in the application in cylinder cap shield sets the key technology scheme that cyclonic separation plate group is the application.
And fuel-air mixture enters cyclonic separation plate group from the first cylinder direction, from the outflow of cuboid plate side.
First oil baffle 400 connects as one structure with second oil baffle 500 by connecting plate 600.Connection
The length of plate is not only smaller than length of the length again smaller than the second oil baffle of first gear oiled-plate method；In the present embodiment, first gear oil
Plate, the two ends of connecting plate are arc.
The first oil return portion 208 and the second oil return portion 209 are provided with first oil baffle 400；In the second gear
The 3rd oil return portion 306 and the 4th oil return portion 307 are provided with oiled-plate method 500.To prevent oil gas from directly being altered without separation from oil return portion
Enter separation chamber, the height in the first oil return portion is different and different according to position from the height in the second oil return portion；The height in the 3rd oil return portion
Spend different and different according to position from the height in the 4th oil return portion.
The first oil return portion is located at the same side of first oil baffle with the second oil return portion；3rd oil return
Portion is located at the same side of second oil baffle with the 4th oil return portion.In the present embodiment, the first oil return portion with second time
Oily portion is located at close to the side of connecting plate；3rd oil return portion is located remotely from the side of connecting plate with the 4th oil return portion.
First oil baffle 400 and second oil baffle 500 are provided with the flange to the cylinder cap shield direction
700.Fluted 800 are set on the flange 700.The company of welding between certain altitude convex tendon 101 on groove 800 and cylinder cap shield
Connect, so as to form air inlet side the first Oil-gas Separation room or the second Oil-gas Separation room of exhaust side.
The first venthole 207 is provided with the cylinder cap shield corresponding to the first Oil-gas Separation room 200；Described first
Venthole 207 is provided with PCV (positive crankcase ventilation positive crankcase ventilation (PCV)s) valve 206；The PCV
Valve 206 passes through pipeline and inlet manifold UNICOM；Is provided with the cylinder cap shield corresponding to the second Oil-gas Separation room 300
Two ventholes 305；Second venthole 305 passes through pipeline and air cleaner outlet side pipeline UNICOM；Second venthole is same
When have concurrently by fresh air import bent axle box function.
In this application, from the air inlet side air admission hole of crankcase oil gas to the first venthole side in the first Oil-gas Separation room
To being disposed with the first dividing plate group, first baffle, cyclonic separation plate group, the first oil return portion, the first orifice plate, the first tooth form and hit
Hit plate and the second oil return portion；The fuel-air mixture entered from air inlet side air admission hole hits the first dividing plate group first, and initial gross separation goes out
Larger oil droplet, realizes first order Oil-gas Separation；Then air-fuel mixture air-flow hits with first baffle during advance and realized
Second level Oil-gas Separation；Fuel-air mixture by two grades of Oil-gas Separations flows to cyclonic separation plate group with certain speed, due to
Curve ruler is designed in cyclonic separation plate group, causes air-flow to produce whirlpool when passing through, because the gentle density of oil is different, oil it is gentle
Separation is produced in the presence of whirlpool, the larger oil droplet after separation directly drops on the first oil baffle, and small oil droplet then impinges upon curve
Plate surface simultaneously flows to the first orifice plate along its surface, completes third level Oil-gas Separation；Oil gas after third level Oil-gas Separation is mixed
Close gas and the first tooth form crash panel after the first orifice plate and the first orifice plate is flowed to certain speed, the first orifice plate and the first tooth form are hit
Plate realizes fourth stage Oil-gas Separation.
The aspect of the centrifugation of first orifice plate point three：One is that fuel-air mixture is directly isolated with the collision of orifice plate non-wall surface of the hole
Oil gas, two be that oil gas closes on before orifice plate ostium whirlpool is produced by rotary shaft of axially bored line, and light gas, which is thrown out of, realizes oil gas
Separation, three be that the gaseous mixture for flowing into aperture converges acceleration through aperture, and small oil droplet is pooled compared with larger oil droplet and occurred with castellated plates
Machine oil is isolated in fiercer collision.
Machine oil content so after the separation of above-mentioned level Four in fuel-air mixture is substantially reduced, and the gas after separation flows through
Pcv valve enters inlet manifold and then enters combustion chambers burn.
In second Oil-gas Separation room second is disposed with from the exhaust side air admission hole of crankcase oil gas to the second venthole
Dividing plate group, second baffle, the 3rd oil return portion, the second orifice plate, the second tooth form crash panel and the 4th oil return portion；From exhaust side air admission hole
The fuel-air mixture of entrance hits second partition group first, and initial gross separation goes out larger oil droplet, realizes first order Oil-gas Separation；So
Air-fuel mixture air-flow hits during advance with second baffle afterwards realizes second level Oil-gas Separation；By second level Oil-gas Separation
Fuel-air mixture afterwards flows to the second tooth form crash panel after the second orifice plate and the second orifice plate, the second orifice plate and with certain speed
Two tooth form crash panels realize third level Oil-gas Separation.
The aspect of the centrifugation of second orifice plate point three：One is that fuel-air mixture is directly isolated with the collision of orifice plate non-wall surface of the hole
Oil gas, two be that oil gas closes on before orifice plate ostium whirlpool is produced by rotary shaft of axially bored line, and light gas, which is thrown out of, realizes oil gas
Separation, three be that the gaseous mixture for flowing into aperture converges acceleration through aperture, and small oil droplet is pooled compared with larger oil droplet and occurred with castellated plates
Machine oil is isolated in fiercer collision.
Oil-gas Separation principle is as follows：
Because crankcase is different from inlet manifold or air filter air outlet pipe pressure differential, bent axle under Different Work Condition of Engine
Case ventilating path is different.
During low engine speed Smaller load, when generally referring to engine speed herein less than 2000 turns, crankcase gas blowby passes through
The first Oil-gas Separation of air inlet side room is separated, and gas blowby is flowed into from air inlet side air admission hole first, meanwhile, it is small negative in low engine speed
During lotus, due to pressure difference, fresh air after air filter can by the second gas outlet of the first Oil-gas Separation of exhaust side room against
Oil gas flowing side flows into the second Oil-gas Separation room and crankcase, and fuel-air mixture in crankcase further is swept into air inlet side first
Oil-gas Separation room carries out Oil-gas Separation, prevents oil sump machine oil from going bad.
In big load at a high speed, when generally referring to engine speed herein more than 2000 turns, air- distributor pressure is higher,
Due to Pcv valve one-way conduction, the first Oil-gas Separation of air inlet side room simulation model for mixing gases flows is hindered, now, has part bent axle
Case gas blowby is separated by the second Oil-gas Separation of exhaust side room, and gas blowby is flowed into from exhaust side air admission hole first, by above-mentioned three
The machine oil content in fuel-air mixture is greatly lowered after level separation, the gas after separation flows into air filter by the second gas outlet
The escape pipe of clear device, then inlet manifold and combustion chambers burn are flowed into successively.
By Oil-gas Separation, the machine oil being separated flows to oil baffle oil return portion, and thus place returns to oil sump.So, nothing
Effective Oil-gas Separation can be obtained by operating in fuel-air mixture in which kind of operating mode, crankcase by engine, and keep crankcase
Available ventilation can be obtained, exhaust emission is significantly reduced while avoiding oil sump machine oil from going bad.
Further, can also be by original position in the whirlwind point of the first Oil-gas Separation room in the other embodiments of the application
The second Oil-gas Separation room, i.e. the first Oil-gas Separation room are arranged at from plate group to set using three-level Oil-gas Separation, the second Oil-gas Separation
Room is set using level Four Oil-gas Separation, can also realize the technical scheme of the application.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (10)
1. a kind of oil-gas separating device for engine improved structure, it is characterised in that：Include cylinder cap shield；In the cylinder cap shield
Inner surface setting has Oil-gas Separation room；
The Oil-gas Separation room is included positioned at the first Oil-gas Separation room and the second Oil-gas Separation room positioned at exhaust side of air inlet side；
The first Oil-gas Separation room is level Four isolating construction；The second Oil-gas Separation room is three-level isolating construction；
The first Oil-gas Separation room includes the first dividing plate group, first baffle, the first oil baffle, cyclonic separation plate group, first
Orifice plate and the first tooth form crash panel；
The two Oil-gas Separations room includes second partition group, second baffle, the second oil baffle, the second orifice plate and the second tooth form and hit
Hit plate；
The cyclonic separation plate group includes at least three first sketch plates set along fuel-air mixture flow direction；It is described
First sketch plate includes sketch plate body, the first branch and the second branch；
The sketch plate body includes cuboid plate, the first circular arc body, the second circular arc body, three-arc body and the first cylinder
Body；One end of first cylinder and the first circular arc body is smoothly connected, the other end of first circular arc body and described second
One end of circular arc body is smoothly connected, and the other end of second circular arc body is smoothly connected with one end of the three-arc body, institute
The one end for stating the other end and the cuboid plate of three-arc body is smoothly connected；First branch is connected to second circle
On the outside of the arc top of arc body；Second branch connects with the side of the cuboid plate；First branch with described second point
Branch is located at the both sides of the sketch plate body respectively；
If first orifice plate is provided with dry gas via with second orifice plate close to the side of the cylinder cap shield；Each
The gas via is bellmouth, and wherein the aperture of air inlet side is more than the aperture of outlet side.
2. oil-gas separating device for engine improved structure according to claim 1, it is characterised in that：Each gas via
Inwall be provided with it is multiple axially through trench structure；The center line of each trench structure is curve.
3. oil-gas separating device for engine improved structure according to claim 1, it is characterised in that：The cyclonic separation plate group is also
Include the second sketch plate；Second sketch plate includes the second cylinder and the tail being smoothly connected with second cylinder
Plate；The distance of second sketch plate and adjacent first sketch plate is about distance between two first sketch plates
Half.
4. oil-gas separating device for engine improved structure according to claim 1, it is characterised in that：The one of the first dividing plate group
Individual side, a side of the cyclonic separation plate group, a side of the first tooth form crash panel, the second partition group
A side and inner surface of the side with the cylinder cap shield of the second tooth form crash panel be connected；
The first baffle and first the orifice plate surface relative with the cylinder cap shield with first oil baffle connect
Connect；
The second baffle and second the orifice plate surface relative with the cylinder cap shield with second oil baffle connect
Connect.
5. oil-gas separating device for engine improved structure according to claim 1, it is characterised in that：First oil baffle and institute
State the second oil baffle and structure is connected as one by connecting plate.
6. the oil-gas separating device for engine improved structure according to claim 1 or 5, it is characterised in that：In first gear oil
The first oil return portion and the second oil return portion are provided with plate；The 3rd oil return portion and the 4th oil return are provided with second oil baffle
Portion.
7. oil-gas separating device for engine improved structure according to claim 6, it is characterised in that：The first oil return portion and institute
State the same side that the second oil return portion is located at first oil baffle；The 3rd oil return portion is located at described with the 4th oil return portion
The same side of second oil baffle.
8. oil-gas separating device for engine improved structure according to claim 6, it is characterised in that：The height in the first oil return portion
Degree is different from the height in the second oil return portion；The height in the 3rd oil return portion is different from the height in the 4th oil return portion.
9. oil-gas separating device for engine improved structure according to claim 1, it is characterised in that：First oil baffle and institute
State the second oil baffle and be provided with flange to the cylinder cap shield direction；Set fluted on the flange.
10. oil-gas separating device for engine improved structure according to claim 1, it is characterised in that：In first oil gas point
From being provided with the first venthole on the cylinder cap shield corresponding to room；First venthole is provided with Pcv valve；The Pcv valve is led to
Cross pipeline and inlet manifold UNICOM；The second venthole is provided with the cylinder cap shield corresponding to the second Oil-gas Separation room；
Second venthole passes through pipeline and air cleaner outlet side pipeline UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510493454.1A CN105003320B (en) | 2015-08-12 | 2015-08-12 | A kind of oil-gas separating device for engine improved structure |
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| CN107143401B (en) * | 2017-06-20 | 2023-05-12 | 宁波市鄞州德来特技术有限公司 | Oil-gas separator structure and engine |
| CN109098817A (en) * | 2018-09-14 | 2018-12-28 | 广西玉柴机器股份有限公司 | A kind of filter plate oil drive formula voltage adaptive controlling oil-gas separating device of engine |
| CN109209563A (en) * | 2018-09-14 | 2019-01-15 | 广西玉柴机器股份有限公司 | A kind of filter board type oil-gas separating device of engine |
| CN109236410A (en) * | 2018-09-14 | 2019-01-18 | 广西玉柴机器股份有限公司 | A kind of filter plate oil drive formula oil-gas separating device of engine |
| CN109236412A (en) * | 2018-09-14 | 2019-01-18 | 广西玉柴机器股份有限公司 | A kind of filter board type voltage adaptive controlling oil-gas separating device of engine |
| CN109209562A (en) * | 2018-09-14 | 2019-01-15 | 广西玉柴机器股份有限公司 | A kind of filter plate gas drive formula oil-gas separating device of engine |
| CN109139188A (en) * | 2018-09-14 | 2019-01-04 | 广西玉柴机器股份有限公司 | A kind of filter plate gas drive formula voltage adaptive controlling oil-gas separating device of engine |
| CN109139189A (en) * | 2018-11-02 | 2019-01-04 | 台州市世达汽车部件有限公司 | Closed crankcase forced ventilation system gs-oil separator for six engine of state |
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