KR20130053887A - Separator for internal-combustion engine - Google Patents

Abstract

PURPOSE: A separator for an internal combustion engine is provided to smoothly discharge separated evaporation engine oil by bypassing blow-by gas to a centrifuge through a bypass flow path in a state in which the blow-by gas is separated from a cyclone in order to lower inner pressure. CONSTITUTION: A separator for an internal combustion engine comprises a duct(10), a cyclone(20), a centrifuge, a bypass flow path(40), and a drainer(50). The duct comprises an inlet port(11), an outlet port(12), and a baffle. The cyclone forms the difference of atmospheric pressure inside the duct by being included in the duct so that the cyclone separates evaporation engine oil and swirls blow-by gas. The centrifuge rotates and drops the blow-by gas in a circular form and separates the evaporation engine oil. The bypass flow path swirls the blow-by gas while the blow-gas is separated from the cyclone in order to supply the blow-by gas to the centrifuge. The drainer discharges the evaporation engine oil to the outside of the duct.

Description

Separators for Internal Combustion Engines {SEPARATOR FOR INTERNAL-COMBUSTION ENGINE}

The present invention relates to a separator for an internal combustion engine, and more particularly, to a separator for an internal combustion engine for separating the evaporation engine oil from the blow-by gas generated by the stroke of the internal combustion engine.

In general, internal combustion engines, such as the engine of a vehicle, explode the inflow air, fuel, and some engine oil together in an explosion. At this time, the cylinder produces a blow-by gas in which the inlet air, the incompletely burned fuel, and a small amount of evaporated evaporation engine oil are mixed.

Most of these blow-by gases are discharged to the outside through the exhaust manifold. However, some blow-by gas is not discharged to the exhaust manifold and flows into the head cover of the upper cylinder. Therefore, the internal combustion engine is provided with a separator for recovering the engine oil evaporated from the blow-by gas flowing into the head cover and at the same time supplying the blow-by gas to the cylinder.

As a separator preceded by the present invention, there is a separator for an internal combustion engine filed by Korean Patent No. 10-1054035 filed by the applicant of the present invention.

The separator of the prior art is integrally provided in the head cover (HC) of the internal combustion engine as shown in Figure 1 for separating the blow-by gas flowing into the inlet (52) by the baffle (54) to primarily separate the evaporation engine oil The duct 50 and the centrifuge 60 separating the evaporation engine oil secondly while rotating the blow-by gas via the duct 50 through the circular flow path 62, and the blow as the inner diameter expands toward the discharge side. Cyclone 70 for separating the evaporation engine oil in the tertiary while vortexing the bigas; A damping chamber 80 having a discharge hole 82 and a regulator 90 for adjusting the blow-by gas to a set pressure while damping the pressure of the blow-by gas.

In the separator of the prior art, the blow-by gas introduced into the inlet is discharged to the discharge hole 82 through the damping chamber 80 while sequentially moving the centrifuge 60 and the cyclone 70 to separate the evaporation engine oil. It is a configuration discharged to the oil hole 72 provided in the cyclone (70).

However, in the separator of the prior art, the evaporation engine oil, which is re-extracted to the oil hole 72, is smoothly discharged by the pressure of the cyclone 70 as the pressure difference therein increases due to the cyclone 70 vortexing blow-by gas. As a result, oil re-efficiency is lowered.

Accordingly, the separator of the prior art adjusts the blow-by gas to the set pressure through the regulator 90, but there is a disadvantage in that the manufacturing cost is increased due to the complicated configuration and cumbersome manufacturing.

Moreover, the separator of the prior art is that as soon as the oil ball 72 to which the separated evaporation engine oil is re-extracted is provided only in the cyclone 70, the evaporation engine oil separated from the baffle 54 or the centrifuge 60 is separated. Since it is not discharged and must move up to the oil hole 72 along the bottom surface, the re-dispersion efficiency of the oil is further reduced.

The present invention was created in order to solve the above-mentioned problems of the prior art, and supplies the blow-by gas introduced into the duct to the cyclone and at the same time bypasses the separated cyclone to lower the internal pressure to separate the evaporation engine oil The purpose is to provide a separator of an internal combustion engine that can be re-extracted smoothly.

The internal combustion engine separator of the present invention for achieving the above object is integral to the head cover of the internal combustion engine in the internal combustion engine separator in which the evaporation engine oil is separated from the blowby gas generated by the stroke of the internal combustion engine. Is provided, the inlet and outlet to the blow-by gas is introduced or discharged on one side and the other side is the blow-by gas introduced into the inlet is communicated to the outlet, in contact with the blow-by gas in the blow-by gas A tubular duct having a baffle separating the evaporation engine oil therein; A cyclone receiving the blow-by gas from the duct and forming an air pressure difference in the duct to separate the evaporation engine oil from the blow-by gas while vortexing the blow-by gas; A centrifugal separator receiving the blow-by gas from the cyclone and separating the evaporation engine oil from the blow-by gas while inducing rotation of the blow-by gas in a circular manner; Bypass passage for bypassing the blow-by gas flowed into the duct in a state separated from the cyclone to supply the blow-by gas to the centrifuge; And a drainer for discharging the evaporation engine oil separated by the cyclone and the centrifuge to the outside of the duct.

According to the separator for an internal combustion engine according to the present invention as described above, the evaporation engine oil can be separated in multiple stages while the blow-by gas introduced into the duct flows through the cyclone and the centrifuge, and in particular, some blow-by gas is bypassed. By bypassing the centrifuge in a state separated from the cyclone through the cyclone can lower the pressure in the duct by the cyclone separated evaporation engine oil can be smoothly re-extracted.

1 is a longitudinal sectional view showing a separator according to the prior art.
2 is a perspective view showing a separator for an internal combustion engine according to the present invention;
3 is a longitudinal sectional view showing a separator for an internal combustion engine according to the present invention;
4 is a cross-sectional view showing a separator for an internal combustion engine according to the present invention.
5 is a perspective view showing a main portion of a separator for an internal combustion engine according to the present invention;

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.

The internal combustion engine separator according to the present invention may include a duct 10, a cyclone 20, a centrifuge 30, a bypass passage 40, and a drainer 50, as shown in FIG. 2. .

As shown in FIG. 2, the duct 10 is formed in the same body on one side of the head cover HC of the internal combustion engine and is a tubular component in which blow-by gas is communicated. An inlet 11 through which the blow-by gas is introduced is formed at one side, and an outlet 12 for discharging the blow-by gas separated from the evaporation engine oil to the intake line of the internal combustion engine is formed at the other side.

The duct 50 has a slope guide 13 for providing a slope to the blow-by gas flowing into the inlet 11 as shown in Figure 3 to separate the evaporation engine oil from the blow-by gas, the slope guide 13 A baffle 15 is provided which separates the evaporation engine oil from the blow-by gas and drops it to the inlet 11 while contacting the blow-by gas guided by).

On the other hand, the duct 15 may be provided with a groove-shaped guide flow path 11a at the edge of the inlet 11 as shown in FIG. The guide passage 11a collects the evaporation engine oil which is separated and dropped by the baffle 15 and guides it to the inlet 11.

In addition, the duct 10 may be configured to further include a tube shrink plate 16 and the cross plate 17, as shown in Figs.

The tubular reduction plate 16 is a member that reduces the diameter of the duct 10 so that blow-by gas flowing through the duct 10 is throttled, and as shown in FIG. By opening the valve, the volume of the pipe is reduced while throttling the blow-by gas. Accordingly, since the blow-by gas passes through the diameter reducing plate 16, the flow rate increases, and thus, the flow rate can be smoothly moved to the outlet 12, and the evaporation engine oil can be separated while contacting the diameter reducing plate 16 in a throttled state.

The cross plate 17 is alternately provided inside the duct 10 as shown in FIG. 4 to guide the blow-by gas to the outlet 12 while moving the blow-by gas in a zigzag form and evaporate while contacting the guided blow-by gas. Remove the engine oil.

Meanwhile, in order to prevent the evaporation engine oil flowing along the wall surface of the duct 10 from flowing through the outlet 12, the projection jaw 12a protrudes along the circumference as shown in FIG. 3.

The cyclone 20 is a component that separates the evaporation engine oil while vortexing blow-by gas by forming a pressure difference inside the duct 10, as shown in FIGS. 3 and 4. For example, as shown in FIG. 3, an outer wall 21, a hollow tube 22, and a communication passage 23 may be included.

As shown in FIG. 3, the outer wall 21 is a member through which blow-by gas communicates along the longitudinal direction of the duct 10, and is formed in a cylindrical shape as illustrated in FIG. 5, and an inlet hole 21a is formed at one side thereof. Is provided to lower the blow-by gas flowing into the inlet hole (21a) while rotating along the inner circumferential surface.

As shown in FIG. 3, the hollow tube 22 is spaced apart from the inner side of the outer wall 21 to provide a pressure difference to the outer wall 21, and the lower end of the hollow tube 22 is spaced apart from the bottom of the duct 10. It is a component that discharges to the upper part while causing vortex by providing a pressure difference to blow-by gas introduced into).

That is, the hollow tube 22 provides a pressure difference to the blow-by gas through a spaced space spaced apart from the outer wall 21 as shown in FIG. 4, and the bottom surface of the duct 10 as shown in FIG. 3. Air pressure difference is provided to blow-by gas through the spaced space.

Accordingly, the blow-by gas forms a vortex while descending along the outer circumferential surface of the hollow tube 22 and the inner circumferential surface of the outer wall 21, and flows into the lower end of the hollow tube 22 to rise along the inner circumferential surface of the hollow tube 22. While forming the vortex, the evaporation engine oil is separated.

As shown in FIG. 3, the communication passage 23 communicates with the upper portion of the hollow tube 22 and the centrifuge 30 to be described later, and the blow-by gas discharged to the upper portion of the hollow tube 22 is centrifugal separator 30. Guide to.

The communication passage 23 may be configured as a cap for communicating while shielding the upper portion of the hollow tube 22 and the centrifuge 30, for example, as shown in Figure 3, the hollow tube ( 22 may be provided with a plurality of dividers 23a for separating the evaporation engine oil while contacting the blow-by gas discharged from 22).

Meanwhile, as shown in FIG. 4, the present invention may further include a vortex chamber 60 which vortexes some blow-by gas flowing in the cyclone 30 in an isolated state and provides the cyclone 30 to the cyclone 30. .

As shown in FIG. 5, the vortex chamber 60 forms an isolated space on one side of the cyclone 30, and communicates with the chamber inlet 61 and the chamber outlet 62 in communication with the outer wall 21 of the cyclone 30. Is prepared.

The vortex chamber 60 flows blow-by gas flowing along the outer wall 21 of the cyclone 20 through the chamber inlet 61 to vortex to separate the evaporation engine oil, and then blows it through the chamber outlet 62. The bigas is re-extracted to the cyclone 20. As a result, the blow-by gas is vortically generated by the vortex chamber 60 and the cyclone 20 so that the evaporation engine oil is smoothly separated.

Here, the chamber inlet 61 may be formed long along the vertical direction of the outer wall 21, for example, and the chamber outlet 62 may be provided on the vortex chamber 60 to communicate with the inner side of the outer wall 21. .

That is, blow-by gas descends along the outer wall 21 of the cyclone 20 and enters the vortex chamber 60 through the chamber inlet 61 to separate the evaporation engine oil, and is provided on the vortex chamber 60. It is redistributed to the chamber outlet 62 and descends again along the outer wall 21 to flow into the lower end of the hollow tube 22. Therefore, since the blow-by gas is discharged to the hollow tube 22 while repeatedly passing through the outer wall 21 and the vortex chamber 60 of the cyclone 20, the evaporation engine oil can be separated more smoothly.

The centrifuge 30 evaporates the blow-by gas supplied through the communication passage 23 of the cyclone 20 as shown in FIG. 3 while lowering it while rotating in a circular manner as shown in FIGS. 3 and 4. Remove the engine oil.

As shown in FIG. 4, the centrifuge 30 has a bypass outlet 43 communicating with the bypass passage 40 to be described later, and discharges the blow-by gas descending while rotating along the inner circumferential surface 12. The partition plate 23a may be provided to separate the evaporation engine oil while guiding the same.

The bypass passage 40 is a component that bypasses the blow-by gas introduced into the duct 10 in a state separated from the cyclone 20 and supplies it to the centrifuge 30.

The bypass passage 40 is a passage communicating with the centrifuge 30 by the above-described bypass outlet 43 while being made by the inner circumferential surface of the duct 10 and the outer circumferential surface of the cyclone 20 as shown in FIG. 4. It is formed of a 41, a part of the blow-by gas flows through the bypass inlet 42 of one side is supplied to the centrifuge 30 in a state separated from the cyclone (20).

The bypass passage 40 reduces a pressure difference generated inside the duct 20 by the cyclone 20 described above by bypassing a part of the blow-by gas to the centrifuge 30. Accordingly, the evaporation engine oil separated from the blow-by gas may be smoothly discharged by the drainer 50 to be described later.

Drainer 50 is a component for discharging the evaporation engine oil separated from the cyclone 20 and the centrifuge 30 to the outside of the duct 10, for example, the vortex chamber 60 described above as shown in FIG. It may be provided on the bottom surface and one bottom surface of the centrifuge (30), respectively, alternatively may be provided in the form directly connected to the lower portion of the cyclone 20 and the centrifuge (30).

Such a drainer 50 may be configured to include a trap 51 and a drain pipe 52, for example, as shown in FIG.

The trap 51 is formed in a groove shape on the bottom surface of the duct 10 as shown in FIG. 3 to collect and receive the evaporation engine oil, and the drain pipe 52 penetrates the trap 51 to trap 51. Re-evaporate the evaporation engine oil contained in the) to the internal combustion engine.

On the other hand, the internal combustion engine separator of the present invention can be configured to further include a refractive index dividing means 70 as shown in FIG.

The refraction dividing means 70 separates the evaporation engine oil from the blow-by gas while communicating the blow-by gas flowing through the duct 10 in the upper refraction as shown in FIG. 3 and the bi-directional split state as shown in FIG. 4. For example, the circular outer wall 71 and the circular inner wall 72 may be configured as shown in FIG. 5.

The circular outer wall 71 is installed in a vertical state on one side of the duct 10 as shown in Figure 3 while the inner surface is circular as shown in Figure 4, the opening opening 71a is provided in the lower opening Blow-by gas flows in through 71a.

The circular outer wall 71 may be installed to form the same body in an extended state on the outer wall 21 constituting the passage 41 of the cyclone 20 and the bypass passage 40, as shown in FIG. Alternatively it may be installed on the side of the centrifuge 30 or the side of the inlet 12.

The circular inner wall 72 is vertically installed inside the circular outer wall 71 while being spaced apart from the circular outer wall 71 as shown in FIG. 4, and as shown in FIG. 3. The evaporation engine oil is separated by dividing the blow-by gas flowed into the opening 71a into the upper side by dividing the evaporation engine oil to both sides along the outer circumferential surface, as shown in FIG. 5. The blow-by gas is supplied to the outer wall 21 through 21a).

On the other hand, the circular inner wall 72 may be provided with a drainer 50 on one side as shown in FIG. Accordingly, the blow-by gas is refracted and divided by the circular inner wall 72 to separate the evaporation engine oil, and the separated evaporation engine oil may be immediately re-extracted to the outside of the duct 10 through the drainer 50. .

It describes the operation of the separator for an internal combustion engine of the present invention including the above components.

Blow-by gas is generated according to the operation of the internal combustion engine as shown in Figure 3 flows into the duct 10 through the inlet 11, the duct 10 by the negative pressure of the internal combustion engine supplied to the outlet 12 Move along the length of.

In this case, the baffle 15 separates the evaporation engine oil while contacting the blow-by gas introduced into the inlet 11 and falls to the inlet 11, and the guide flow path 11a is the evaporation engine oil falling from the baffle 15. To the inlet (11) to be re-extracted to the internal combustion engine.

And blow-by gas is guided through the diameter reduction plate 16 while flowing through the duct 10 as shown in Figure 5 is supplied to the circular outer wall (71).

The circular outer wall 71 introduces some blow-by gas through the opening 71a as shown in FIG. 3, and divides the remaining blow-by gas into both sides, thereby bypassing 42 as shown in FIG. 4. ).

The circular inner wall 71 refracts the blow-by gas introduced into the opening 71 of the circular outer wall 71 in a vertical direction as shown in FIG. 3 while dividing the blow-by gas in both sides as shown in FIG. The oil is separated from the blow-by gas, and the separated evaporation engine oil is re-extracted to the internal combustion engine through the drainer 50 provided on one side of the circular inner wall 71.

Then, the blow-by gas is supplied to the outer wall 21 of the cyclone 20 through the inlet hole 21a and rotates along the inner circumferential surface of the outer wall 21 as shown in FIG. 5.

At this time, the outer wall 21 is provided with a pressure difference through the space spaced apart from the hollow tube 22, as shown in Figure 4 while lowering the blow-by gas vortex, the lower part of the blow-by gas chamber inlet By supplying to the vortex chamber 60 through 61, the blow-by gas is vortexed in isolation.

Accordingly, as the blow-by gas is vortexed in the vortex chamber 60 as shown in FIG. 4, the evaporation engine oil is separated, and the separated evaporation engine oil is collected in the trap 51 provided in the vortex chamber 60 to drain. It is re-extracted to the internal combustion engine through the pipe (52).

In addition, the blow-by gas is re-supplied to the outer wall 21 through the chamber outlet 62 of the vortex chamber 60 and moves to the upper portion of the hollow tube 22 through the lower end of the hollow tube 22.

At this time, the hollow tube 22 separates the evaporation engine oil from the blow-by gas by raising the blow-by gas while providing a pressure difference through the reduction of the diameter inside the outer wall 21. The evaporation engine oil separated from the hollow tube 22 falls to the lower portion of the hollow tube 22 and is discharged by moving to the drainer 50 provided in the vortex chamber 60 through the chamber inlet 61.

In addition, the blow-by gas is supplied to the centrifuge 30 through the communication flow path 23 as shown in FIG. 3, and the evaporation engine oil is separated as it rotates while rotating along the inner circumferential surface of the centrifuge 30. The evaporation engine oil separated by the separator 30 is accommodated in the trap 51 provided on one side of the centrifuge 30, collected, and then re-extracted to the internal combustion engine through the drain pipe 52.

On the other hand, the remaining blow-by-gas divided by the above-described circular outer wall 71 is introduced into the passage 41 through the bypass inlet 42 and moves along the passage 41 and through the bypass outlet 43. The evaporation engine oil is separated while being supplied to the centrifuge 30 and rotated by the centrifuge 30.

Then, the blow-by gas moves in a zigzag form through the cross plate 17, and after the evaporation engine oil is separated, is re-supplied to the intake line of the internal combustion engine through the outlet 12.

According to the separator for the internal combustion engine of the present invention as described above, while the blow-by gas introduced into the duct 10 flows through the cyclone 20 and the centrifuge 30, the evaporation engine oil can be separated in multiple stages. As the blow-by gas bypasses the centrifuge 30 while being separated from the cyclone 20 through the bypass passage 40, the pressure inside the duct 10 by the cyclone 20 can be lowered, so the evaporated separated. Engine oil can be re-extracted smoothly.

In addition, since the outer wall 21 constituting the cyclone 20 is spaced apart from the hollow tube 22 and the hollow tube 22 is spaced from the bottom, an air pressure difference is formed to vortex blow-by gas so that the evaporation engine oil is smooth. Can be separated.

In addition, since the blow-by gas is vortexed in isolation by the vortex chamber 60 provided in communication with the cyclone 20, the evaporation engine oil may be separated from the blow-by gas in a double manner.

In addition, since the trap 51 constituting the drainer 50 is formed in a groove shape and receives the evaporation engine oil and is discharged through the drain pipe 52, the trap 51 is evaporated separated from the cyclone 20 or the centrifuge 30. The engine oil may be re-extracted without being dispersed on the bottom surface of the duct 10.

In addition, since the blow-by gas is refracted in the vertical direction by the circular outer wall 71 and the circular inner wall 72 constituting the refraction dividing means 70, it is divided into both sides, so that the re-discharge efficiency of the evaporation engine oil can be further improved. have.

While specific embodiments of the present invention have been described above by way of example, these are for illustrative purposes only and are not intended to limit the protection scope of the present invention. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made therein without departing from the spirit of the invention.

10 duct 11: inlet
11a: guide passage 12: outlet
12a: protruding jaw 13: inclined guide
15: baffle 16: diameter reduction plate
17: crossover 20: cyclone
21: outer wall 21a: inlet hole
22: hollow tube 23: communication path
23a: partition plate 30: centrifuge
40: bypass euro 41: passage
42: bypass exit 43: bypass exit
50: Drainer 51: Trap
52: drain pipe 60: vortex chamber
61: chamber inlet 62: chamber outlet
70: refraction dividing means 71: circular outer wall
71a: opening 72: round inner wall

Claims (5)

In a separator for an internal combustion engine that separates evaporation engine oil from blow-by gas generated by the stroke of the internal combustion engine,
It is provided integrally with the head cover of the internal combustion engine, and the inlet and outlet ports through which the blow-by gas is introduced or discharged are provided on one side and the other side, the blow-by gas introduced into the inlet is communicated to the outlet, the blow-by A tubular duct provided therein with a baffle separating the evaporation engine oil from the blow-by gas while in contact with a gas;
A cyclone receiving the blow-by gas from the duct and forming an air pressure difference in the duct to separate the evaporation engine oil from the blow-by gas while vortexing the blow-by gas;
A centrifugal separator receiving the blow-by gas from the cyclone and separating the evaporation engine oil from the blow-by gas while inducing rotation of the blow-by gas in a circular manner;
Bypass passage for bypassing the blow-by gas flowed into the duct in a state separated from the cyclone to supply the blow-by gas to the centrifuge; And
And a drainer for discharging the evaporation engine oil separated from the cyclone and the centrifuge to the outside of the duct. 2. The cyclone according to claim 1,
A cylindrical outer wall having an inlet hole through which the blow-by gas communicated along the longitudinal direction of the duct;
It is installed on the inner side of the outer wall to provide a pressure difference to the outer wall, and as the bottom and bottom of the duct is spaced apart the blow-by gas introduced into the outer wall through the lower end flows into the vortex by the pressure difference Hollow pipe discharged to the top while forming a; And
And a communication flow passage communicating with an upper portion of the hollow tube and the centrifuge and guiding the blow-by gas discharged to the upper portion of the hollow tube to the centrifugal separator. The method of claim 1, wherein the drainer,
A trap formed in the groove of the cyclone and the centrifuge, respectively, for receiving the evaporation engine oil; And
And a drain pipe that passes through the trap and discharges the evaporation engine oil contained in the trap. The method of claim 1,
And a vortex chamber communicating with the cyclone and vortexing some blow-by gas flowing in the cyclone in an isolated state to provide the cyclone to the cyclone. The method of claim 1, wherein the bypass flow path,
And a passage formed between the inner circumferential surface of the duct and the outer circumferential surface of the cyclone or the centrifugal separator.

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