CN211900738U - Oil-gas separator, crankcase ventilation oil return system and automobile - Google Patents

Abstract

The utility model provides an oil and gas separator, crankcase ventilation oil return system and car relates to car parts technical field, oil and gas separator includes: the oil-gas separator comprises an oil-gas separator body, wherein the oil-gas separator body forms an accommodating space which comprises a first cavity, a second cavity and a third cavity; the oil-gas separator body is also provided with a first separation oil return channel, a second separation oil return channel and a third separation oil return channel for separating return oil; the first separation module is vertically arranged in the third cavity, the third cavity is positioned in the second cavity, and the second cavity is communicated with the third cavity through the first separation module; a second separation module is arranged in the first cavity and comprises a pore plate, a felt and a first baffle, and the second cavity is communicated with the first cavity through the pore plate. The embodiment of the utility model provides a separation efficiency of oil and gas separator has been promoted, oil and gas separator's separation performance has been improved.

Description

Oil-gas separator, crankcase ventilation oil return system and automobile

Technical Field

The utility model relates to the field of automotive technology, in particular to oil and gas separator, crankcase ventilation oil return system and car.

Background

The oil-gas separator is an important part in a ventilation system of an engine crankcase, and has the main function of separating engine oil contained in engine blow-by gas, the engine oil separated by the oil-gas separator flows back to an oil pan through an oil return channel, and the separated gas is reintroduced into an engine air inlet system, finally enters an air inlet manifold and then enters a combustion chamber to be burnt. The structure of the existing oil-gas separator mainly comprises a rough separation structure and a fine separation structure, wherein the rough separation structure mostly adopts a labyrinth (baffle) form, the fine separation structure mostly adopts spiral or multi-stage cyclone, non-woven fabric type, pore plate and other structures, and the specific design scheme of the oil-gas separator needs to be determined according to the arrangement space of an engine.

The existing oil-gas separator has the problems of low oil-gas separation efficiency and large engine oil consumption on the premise of meeting the functions of a crankcase ventilation system, and the strict requirements of the existing regulations on emission are difficult to meet.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an oil and gas separator, crankcase ventilation oil return system and car to solve oil and gas separator efficiency and hang down and lead to the big problem of the machine oil consumption of engine.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides an oil and gas separator, include:

the oil-gas separator comprises an oil-gas separator body, wherein the oil-gas separator body forms an accommodating space which comprises a first cavity, a second cavity and a third cavity; the oil-gas separator body is also provided with a first separation oil return channel, a second separation oil return channel and a third separation oil return channel for separating return oil;

the first cavity is internally provided with a first separation module, the first separation module is composed of a pore plate, a felt and a first baffle, and the first cavity is communicated with the second cavity through the pore plate;

a first separation module is vertically arranged in the third cavity, the third cavity is located inside the second cavity, and the second cavity is communicated with the third cavity through the first separation module.

Further, the inside of the oil separator body includes:

the separation device comprises a first separation cavity and a second separation cavity, wherein a sealing rib is arranged between the first separation cavity and the second separation cavity, the first separation cavity is positioned in the second cavity, and the second separation cavity is positioned in the first cavity;

wherein the first separation chamber is connected with the first oil storage chamber through a pipeline.

Further, the first separation module includes:

the second baffle, a first vent hole formed by the second baffle in a surrounding way and a first oil return groove positioned at the bottom of the second baffle;

and the first oil return groove returns oil to the liquid level of the oil bottom shell machine oil through the first separation oil return passage.

Furthermore, a throttle hole is formed in the oil-gas separator body, and a joint is arranged at the throttle hole;

the second separation chamber is in communication with an intake manifold of the engine through the joint.

Furthermore, a third baffle plate, a second oil return groove and a second oil storage cavity are arranged in the first cavity;

the second oil return groove is connected with the third baffle;

wherein the second separation chamber is located above the third baffle;

the second oil reservoir is located below the third baffle.

Furthermore, a cover plate is arranged behind the second separation module;

the cover plate is provided with a second vent hole.

Further, the engine oil separated by the oil-gas separator returns to the liquid level of the engine oil of the oil bottom shell through the first separation oil return channel;

the engine oil separated by the oil-gas separator returns to the position below the oil level of the oil in the oil sump through the second separation oil return channel and the third separation oil return channel;

and an umbrella-shaped oil return valve is arranged on the third separation oil return channel.

Further, the umbrella-shaped oil return valve includes:

the sealing device comprises a body, a sealing ring and an umbrella valve;

wherein the umbrella valve is connected with the body in a matching way; the seal rings seal opposite sides of the body.

Furthermore, a sealing ring mounting groove matched with the engine cylinder body is arranged on the edge of the oil-gas separator body.

Furthermore, a plurality of bolt mounting holes are formed in the oil-gas separator body, and the oil-gas separator body is fixedly connected with the engine cylinder body through bolts penetrating through the bolt mounting holes.

The utility model provides a crankcase ventilation oil return system, including the crankcase, the oil pan still includes as right above oil and gas separator, wherein, oil and gas separator respectively with the crankcase with the oil pan intercommunication.

The utility model provides an automobile, include as above crankcase ventilation oil return system.

The utility model has the advantages that:

the oil-gas separator of the utility model has the advantages that through the arrangement of the two separation modules with the three cavities, the secondary separation is efficiently carried out, the separation accuracy is improved, the first separation module adopts a baffle plate impact structure, and the second separation adopts a felt structure; the utility model discloses a gas has carried out the secondary separation, and the engine oil cubic oil return of isolating is through three oil return passageway separation respectively, has effectively promoted oil and gas separator's separation efficiency, has improved oil and gas separator's separation performance.

Drawings

Fig. 1 shows one of the schematic structural diagrams of an oil-gas separator provided by an embodiment of the present invention;

fig. 2 shows a second schematic structural diagram of an oil-gas separator according to an embodiment of the present invention;

fig. 3 shows a third schematic structural diagram of an oil-gas separator according to an embodiment of the present invention;

fig. 4 shows one of the schematic structural diagrams of the first separation module of the oil-gas separator provided by the embodiment of the invention;

fig. 5 shows a second schematic structural diagram of the first separation module of the oil-gas separator according to the embodiment of the present invention;

fig. 6 shows one of the schematic structural diagrams of the second separation module of the oil-gas separator provided by the embodiment of the invention;

fig. 7 shows a schematic structural diagram of a cover plate of an oil-gas separator according to an embodiment of the present invention;

fig. 8 shows one of the schematic structural diagrams of the umbrella-shaped oil return valve of the oil-gas separator according to the embodiment of the present invention;

fig. 9 shows a second schematic structural diagram of an umbrella-shaped oil return valve of the oil-gas separator according to the embodiment of the present invention;

fig. 10 shows a fourth schematic structural view of an oil-gas separator according to an embodiment of the present invention;

fig. 11 shows a fifth schematic structural view of an oil-gas separator according to an embodiment of the present invention;

fig. 12 shows a sixth schematic structural view of an oil-gas separator according to an embodiment of the present invention.

Description of reference numerals:

100-oil-gas separator body; 101-a first oil reservoir; 102-sealing ribs; 103-bolt mounting holes; 104 orifice; 105-a second separation chamber; 106-a second oil return groove; 107-third baffle; 108 a second oil reservoir; 109-sealing ring mounting groove; 110-a linker; 111-a first separation chamber; 112-a sealing ring; 200-a first separation module; 201-a first vent; 202-a second baffle; 203-a first oil return groove; 300-a second separation module; 301 orifice plate; 302-felt; 303-a first baffle; 400-the cover plate; 401-a second vent; 500-umbrella-shaped oil return valve; 501-body; 502-sealing ring; 503-umbrella valve; 600-a first separation oil return passage; 700-second separation oil return passage; 800-third separation oil return passage.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model discloses to oil and gas separator efficiency on the low side and the big problem of the machine oil consumption volume that leads to the engine, provide an oil and gas separator, crankcase ventilation oil return system and car.

As shown in fig. 1, fig. 6, fig. 11 and fig. 12, an embodiment of the present invention provides an oil-gas separator, including:

the oil-gas separator comprises an oil-gas separator body 100, wherein the oil-gas separator body 100 forms an accommodating space which comprises a first cavity, a second cavity and a third cavity; the oil-gas separator body 100 is further provided with a first separation oil return passage 600, a second separation oil return passage 700 and a third separation oil return passage 800 for separating return oil;

it should be noted that the engine oil separated by the oil-gas separator returns to the liquid level of the oil in the oil pan through the first separation oil return passage 600; the engine oil separated by the oil-gas separator returns to the position below the oil level of the oil in the oil sump through the second separation oil return passage 700 and the third separation oil return passage 800; wherein, an umbrella-shaped oil return valve 500 is arranged on the third separation oil return channel 800. Here, above the oil level of the oil pan and below the oil level of the oil pan is that the first feature is in the second feature, the first and second features are in direct contact, the first feature being "above" the second feature merely means that the first feature level is higher than the second feature, or "above" the first feature merely means that the oil level surface of the oil pan, and "below" the second feature means that the oil level is inside. A first separation module 200 is vertically arranged in the third cavity, the third cavity is positioned in the second cavity, and the second cavity is communicated with the third cavity through the first separation module 200;

further, the first cavity includes therein: the second separation module 300 is composed of a pore plate 301, a felt 302 and a first baffle 303, and the second cavity is communicated with the first cavity through the pore plate 301;

the pore plate 301 is provided with a plurality of pores arranged side by side, the air mixture after the second separation passes through the pore plate 301 on the second separation module 300 and then strikes the felt 302, the air mixture is separated for the third time, and the separation type for the third time is fine separation.

Specifically, as shown in fig. 8 and 9, the umbrella-shaped oil return valve 500 provided on the third separation oil return passage 800 includes:

a body 501, a seal ring 502 and an umbrella valve 503;

wherein, the umbrella valve 503 is connected with the body 501 in a matching way; the sealing rings 502 seal opposite sides of the body 501.

In the design of the oil-gas separator, when the mixed gas in the crankcase passes through the first separation module 200, the pressure loss is small, the corresponding oil return height is low, the umbrella-shaped oil return valve 500 may not be arranged on the second coarse separation oil return passage 700, and the umbrella-shaped oil return valve 500 is arranged on the third oil return passage 800 of the oil-gas separator body 100; the structural design of the umbrella valve 503 realizes that the engine oil on the third oil return passage 800 of the oil-gas separator flows into the oil pan in the forward direction, so that the risk that the engine oil in the oil pan enters the second oil storage cavity 108 of the oil-gas separator is avoided.

As also shown in fig. 1 to 5, optionally, the inside of the oil separator body 100 includes:

a first separation cavity 111 and a second separation cavity 105, wherein a sealing rib 102 is arranged between the first separation cavity 111 and the second separation cavity 105, the first separation cavity 111 is positioned in the second cavity, and the second separation cavity 105 is positioned in the first cavity;

wherein the first separation chamber 111 is connected to the first oil reservoir chamber 101 through a pipe.

It should be noted that the first separation cavity 111 is a coarse separation cavity, and the second separation cavity 105 is a fine separation cavity; the mixed gas separated by the second separation module 200 enters the first separation cavity 111, the mixed gas impacts the inner wall surface of the first separation cavity 111, the flow direction of the mixed gas is changed, the flow speed of the mixed gas is increased, and the mixed gas is separated for the second time in the process.

The primary separation is accomplished by the first separation module 200, specifically, the first separation module 200 comprises:

a second baffle 202, a first vent hole 201 formed by the second baffle 202 and a first oil return groove 203 positioned at the bottom of the second baffle 202;

the first oil return groove 203 returns oil to the oil level of the oil sump through the first separation oil return passage 600.

Specifically, the mixed gas in the engine crankcase enters the first separation cavity 111 of the oil-gas separator through the first vent hole 201 on the first separation module 200, and in the process, the mixed gas is primarily separated; the second baffle 202 can block the blow-by gas in the crankcase of the engine in the crankcase as much as possible so as to reduce the content of the engine oil entering the blow-by gas in the oil-gas separator, which is beneficial to improving the separation efficiency of the oil-gas separator; the engine oil separated by the first separation module 200 in the oil separator is collected along the inner wall surface of the second baffle 202 and then reaches the first oil return groove 203. According to fig. 11, the engine oil separated by the first separation module 200 is collected from the first return groove 203 into the first separation return channel 600 on the cylinder body and flows back to the oil surface of the oil sump.

After the primary separation and the secondary separation, the engine oil after the secondary separation flows back to the inside of the first oil storage cavity 101, and when the liquid level of the engine oil in the first oil storage cavity 101 reaches a certain height, the engine oil after the secondary separation flows back to the position below the liquid level of the engine oil in the oil pan through the second separation oil return channel 700 on the cylinder body. In particular, the final separation is completed again by passing through the second separation module 300.

Further, a third baffle 107, a second oil return groove 106 and a second oil storage cavity 108 are arranged in the first cavity;

the second oil return groove 106 is connected with the third baffle 107;

wherein the second separation chamber 105 is located above the third baffle 107;

the second oil reservoir chamber 108 is located below the third baffle 107.

It should be noted that the engine oil after the third fine separation flows back into the second oil storage cavity 108, and when the level of the engine oil stored in the second oil storage cavity 108 reaches a certain height, the engine oil after the third separation flows back to below the level of the engine oil in the oil pan through the third separation oil return passage 800 on the cylinder body, as shown in fig. 12.

Further, as shown in fig. 1 to 3, an orifice 104 is provided on the oil-gas separator body 100, and a joint 110 is provided at the orifice 104;

the second separation chamber 105 communicates with the intake manifold of the engine via the joint 110.

Specifically, when the engine supercharger is not supercharged, the engine operates at a low load, the mixture gas separated by the second separation module 300 passes through the throttle hole 104 and the joint 110 on the oil-gas separator body 100 and then enters the engine intake manifold through a ventilation pipeline to be burnt, and the pressure distribution in the engine crankcase can be effectively improved by adjusting the size of the throttle hole 104. When the engine supercharger starts to supercharge, the engine works under high load, the PCV valve on the pipeline where the throttle hole 104 on the oil-gas separator body 100 is located is closed, and then the mixed gas cannot circulate.

Further, a cover plate 400 is arranged behind the second separation module 300;

the cover plate 400 is provided with a second vent 401.

It should be noted that the mixture gas in the second separation cavity 105 of the oil-gas separator body 100 enters the pressure shell of the supercharger through the second vent hole 401 on the cover plate 400, the built-in vent channels on the cylinder body, the cylinder cover and the cylinder cover and the external pipeline, and then enters the intake manifold of the engine through the intake system together with the fresh air, so as to be burned.

As shown in fig. 1 and 10, a seal ring installation groove 109 matched with the engine cylinder is formed on the edge of the oil separator body 100.

In the process of installing the oil-gas separator, the seal ring 112 is disposed in the seal ring installation groove 109, and the shape of the seal ring 112 is identical to that of the seal ring installation groove 109, so that the assembly sealing performance of the seal ring 112 and the seal ring installation groove 109 is ensured, and the assembly sealing performance of the seal ring 112 and the seal ring installation groove also ensures the sealing performance of the oil-gas separator body 100.

Specifically, a plurality of bolt mounting holes 103 are formed in the oil-gas separator body 100, and the oil-gas separator body 100 is fixedly connected with an engine cylinder body through bolts penetrating through the bolt mounting holes 103.

To sum up, the embodiment of the utility model provides a through setting up two separation module, wherein first separation module adopts the isolating construction of baffle, and the structural design of first separation module can block the machine oil granule in the engine blowby gas in the crankcase, is of value to the promotion of oil and gas separator separation efficiency, and second separation module adopts felt project organization, wherein, the gas mixture warp orifice plate on the second separation module, then striking felt accomplishes the twice separation of gas mixture, and the three oil return of the machine oil cubic oil of separation is through three oil return passage, has promoted oil and gas separator's separation efficiency, has improved oil and gas separator's separation performance.

The embodiment of the utility model provides a crankcase ventilation oil return system is still provided, including the crankcase, the oil pan, still include as above oil and gas separator, wherein, oil and gas separator respectively with the crankcase with the oil pan intercommunication.

Specifically, the oil-gas separator is respectively communicated with the crankcase and the oil pan through an oil return passage.

Correspondingly because the utility model discloses oil and gas separator is applied to crankcase ventilation oil return system, consequently, the embodiment of the utility model provides a crankcase ventilation oil return system is still provided, wherein, above-mentioned oil and gas separator realize that the embodiment all is applicable to this crankcase ventilation oil return system's embodiment, also can reach the same technological effect.

An embodiment of the utility model provides a still provide an automobile, wherein, the automobile includes as above crankcase ventilation oil return system. The crankcase ventilation oil return system is applicable to the automobile in the embodiment, and the same technical effect can be achieved.

The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

Claims (13)

1. An oil and gas separator is arranged on an engine cylinder body, and is characterized by comprising:

the oil-gas separator comprises an oil-gas separator body (100), wherein the oil-gas separator body (100) forms an accommodating space which comprises a first cavity, a second cavity and a third cavity; the oil-gas separator body (100) is also provided with a first separation oil return channel (600), a second separation oil return channel (700) and a third separation oil return channel (800) which are used for separating return oil;

a first separation module (200) is vertically arranged in the third cavity, the third cavity is located inside the second cavity, and the second cavity is communicated with the third cavity through the first separation module (200).

2. An oil separator as in claim 1 wherein the first cavity comprises:

the second separation module (300) is composed of a pore plate (301), a felt (302) and a first baffle plate (303), and the second cavity is communicated with the first cavity through the pore plate (301).

3. Oil separator according to claim 1, characterized in that the inside of the oil separator body (100) comprises:

a first separation cavity (111) and a second separation cavity (105), wherein a sealing rib (102) is arranged between the first separation cavity (111) and the second separation cavity (105), the first separation cavity (111) is positioned in the second cavity, and the second separation cavity (105) is positioned in the first cavity;

wherein the first separation chamber (111) is connected with the first oil storage chamber (101) through a pipeline.

4. Oil separator according to claim 3, characterized in that said first separation module (200) comprises:

a second baffle plate (202), a first vent hole (201) formed by the second baffle plate (202) in a surrounding manner, and a first oil return groove (203) positioned at the bottom of the second baffle plate (202);

the first oil return groove (203) returns oil to the oil level of the oil sump shell through the first separation oil return passage (600).

5. Oil-gas separator according to claim 3, characterized in that an orifice (104) is provided on the oil-gas separator body (100), and a joint (110) is provided at the orifice (104);

the second separation chamber (105) is communicated with an intake manifold of an engine through the joint (110).

6. Oil separator according to claim 5, characterized in that a third baffle (107), a second oil return groove (106) and a second oil reservoir chamber (108) are arranged in the first cavity;

the second oil return groove (106) is connected with the third baffle (107);

wherein the second separation chamber (105) is located above the third baffle (107);

the second oil reservoir chamber (108) is located below the third baffle plate (107).

7. Oil separator according to claim 2, characterized in that a cover plate (400) is arranged behind the second separation module (300);

the cover plate (400) is provided with a second vent hole (401).

8. Oil separator according to claim 1,

the engine oil separated by the oil-gas separator returns to the liquid level of the engine oil of the oil bottom shell through the first separation oil return channel (600);

the engine oil separated by the oil-gas separator returns to the position below the oil level of the oil in the oil sump through a second separation oil return channel (700) and a third separation oil return channel (800);

wherein, an umbrella-shaped oil return valve (500) is arranged on the third separation oil return channel (800).

9. Oil separator according to claim 8, characterized in that said umbrella-shaped oil return valve (500) comprises:

a body (501), a sealing ring (502) and an umbrella valve (503);

wherein the umbrella valve (503) is matched and connected with the body (501); the sealing rings (502) seal opposite sides of the body (501).

10. Oil separator in accordance with claim 1 characterized in that the edge of the oil separator body (100) is provided with a gasket mounting groove (109) to be fitted with the engine block.

11. An oil-gas separator as claimed in claim 1, wherein the oil-gas separator body (100) is provided with a plurality of bolt mounting holes (103), and the oil-gas separator body (100) is fixedly connected with an engine cylinder through bolts penetrating through the bolt mounting holes (103).

12. A crankcase ventilation oil return system comprising a crankcase, an oil sump, and an oil-gas separator according to any one of claims 1-11, wherein the oil-gas separator is in communication with the crankcase and the oil sump, respectively.

13. An automobile comprising the crankcase ventilation oil return system of claim 12.

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