KR101054035B1 - Separators for Internal Combustion Engines - Google Patents

Abstract

The present invention relates to a separator for an internal combustion engine. The present invention is provided with an inlet and a baffle through which the blow-by gas flows, and a duct separating the evaporation engine oil primarily from the blow-by gas; A centrifuge for separating the evaporation engine oil secondly while rotating the blow-by gas passing through the duct; A cyclone that receives the blow-by gas from the centrifuge or the duct and separates the evaporation engine oil in a tertiary manner while vortexing and discharges the evaporation engine oil through the oil hole on one side; A damping chamber having a discharge hole for trapping the blow-by gas supplied from the cyclone or the centrifuge while collecting the blow-by gas and damping the pressure of the blow-by gas; And a regulator for adjusting the pressure of the blow-by gas damped in the damping chamber, wherein the duct bypasses the blow-by gas inlet from the blow-by gas while preliminarily separating the evaporation engine oil from the blow-by gas. Includes more editions. In the present invention, since the evaporation engine oil is separated in multiple stages, the recovery rate of the evaporation engine oil can be improved, and since the evaporation engine oil is preliminarily separated, the evaporation engine oil can be separated from the blow-by gas more smoothly.

Gas, rotation, vortex, diffusion, damping

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 an evaporation engine oil from a 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 inflow air, incompletely burned fuel, and some evaporated engine oil are evaporated. 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.

Such a separator is provided in the head cover 2 of the cylinder 3 as shown in FIG. 1 to collect blow-by gas flowing into the head cover 2 through the duct 12. The separators 12 and 14 separate the evaporation engine oil from the blow-by gas while supplying the collected blow-by gas to the intake manifold 1 through the regulator 14, as shown in the cylinder 3. Resupply with At this time, the regulator 14 inhales the blow-by gas by the vacuum pressure of the intake manifold 1. Therefore, the blow-by gas and the evaporation engine oil are resupplied to the intake manifold 1 and the cylinder 3 to be reburned and recycled.

However, since the separators 12 and 14 for internal combustion engines separate the evaporation engine oil while simply moving the blow-by gas, the recovery rate of the evaporation engine oil is very poor.

In addition, since the pressure of the blow-by gas flowing into the regulator 14 cannot be buffered and the blow-by gas is supplied to the regulator 14 without the pressure being buffered, the pressure of the blow-by gas is reduced. There is also a problem that the performance of 14) is reduced.

In addition, as the performance of the regulator 14 is degraded, the pressure (flow rate) of the blow-by gas discharged through the regulator 14 cannot be maintained uniformly at a desired pressure.

The present invention has been made to solve the conventional problems as described above, it is possible to separate the evaporation engine oil in multiple stages from the blow-by gas while moving the blow-by gas in a curved form, or rotate and rotate, An object of the present invention is to provide a separator for an internal combustion engine provided with a preliminary separating member for separating the evaporation engine oil from the blowby gas before entering the duct.

In particular, an object of the present invention is to provide a separator for an internal combustion engine that moves blow-by gas in a curved form such as zigzag or disperses it into various branches.

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Another object of the present invention is to provide a separator for an internal combustion engine that is provided with a mechanism for diffusing the blow-by gas before it is supplied to the regulator, so that the blow-by gas can be supplied to the regulator while the density of the blow-by gas is reduced.

In addition, another object of the present invention is to provide a separator for an internal combustion engine provided with a regulator having a structure capable of uniformly responding to the vacuum pressure of the intake manifold.

The internal combustion engine separator according to the present invention for achieving the above object is provided integrally in 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. A duct having a baffle for separating the evaporation engine oil from the blow-by gas while guiding the blow-by gas in a curved shape, the inflow port into which the blow-by gas is introduced; A centrifugal separator having a circular flow path having a circular structure for rotating the blow-by gas passing through the duct to separate the evaporation engine oil from the blow-by gas while rotating the blow-by gas passing through the duct; The blow-by gas is supplied from any one of the centrifuges or ducts, and as the inner diameter expands toward the discharge side, the blow-by gas is vortexed to separate the evaporation engine oil from the blow-by gas, and the evaporation engine is separated on one side. A cyclone having an oil hole through which oil is discharged; Damping chamber having a blow-by gas is supplied from any one of the cyclone or centrifuge, the blow-by gas is collected while diffusing the supplied blow-by gas to damp the pressure of the blow-by gas, and the blow-by gas discharged to one side And; And a regulator configured to control the blow-by gas damped in the damping chamber to a set pressure while bypassing the duct, and the duct is formed in the inlet to face the inflow direction of the blow-by gas and flows into the inlet. It further includes a bypass plate for preliminarily separating the evaporation engine oil from the blow-by gas while bypassing the gas.

Here, the above-described centrifuge and cyclone may be sequentially connected to the duct, or alternatively, may be connected to the duct in a changed order. Therefore, the cyclone is supplied with the blow-by gas from either the centrifuge or the duct, and the damping chamber is supplied with the blow-by gas from either the cyclone or the centrifuge.

The duct may include, for example, a primary baffle that receives blow-by gas from the inlet and is installed in a state where communication of the blow-by gas is possible; It may be configured to include a secondary baffle which is installed in a state capable of communicating with the blow-by gas while forming a state spaced apart from the primary baffle. At this time, at least one of the baffles is preferably configured to further include a hole-shaped dispersion means for dispersing the blow-by gas.

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The bypass plate may further include a convex protrusion protruding in a direction opposite to the direction of the blow-by gas flowing into the inlet to condense the evaporation engine oil flowing into the inlet.

The regulator may include, for example, a housing having an air supply hole through which the blow-by gas is supplied from the damping chamber and an exhaust hole through which the blow-down gas is discharged to communicate the blow-by gas through the air supply hole and the exhaust hole; A diaphragm provided inside the housing and configured to adjust the pressure of the blow-by gas communicated to the housing while flowing by the vacuum pressure of the damping chamber to a set pressure; And an elastic body elastically supporting the diaphragm in the housing to prevent the diaphragm from being adsorbed into the housing by the vacuum pressure.

On the other hand, the present invention, it is necessary to further include a circulating member for flowing the blow-by gas inside the cyclone to supply to the damping chamber.

For example, the flow member may be configured as a tube pilot in which one side is in communication with the damping chamber to provide an inlet through which the blow-by gas is supplied to the damping chamber, and the other side is inserted into the cyclone.

The separator for internal combustion engine according to the present invention as described above separates the evaporation engine oil in multiple stages through a duct with a baffle, a centrifugal separator and a cyclone, so that the recovery rate of the evaporation engine oil is excellent, and a bypass plate and a condensation protrusion flow into the duct. Since the evaporation engine oil is preliminarily separated from the blow-by gas, the evaporation engine oil can be separated from the blow-by gas more smoothly.

In particular, since the duct moves the blow-by gas through the baffle in a curved form, or the blow-by gas is dispersed and moved by the dispersion means provided in the baffle, the evaporation engine oil can be separated from the blow-by gas more smoothly. Can be.

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In addition, since the damping chamber reduces the pressure while diffusing the blow-by gas, there is an effect that the high-pressure blow-by gas can be prevented from being immediately supplied to the regulator.

In addition, since the regulator adjusts the pressure of the blow-by gas through the diaphragm elastically supported by the elastic body there is an effect that can maintain the pressure of the blow-by gas discharged through the damping chamber uniformly.

Hereinafter, a separator for an internal combustion engine according to the present invention will be described with reference to the accompanying drawings. FIG. 2 is a perspective view showing a head cover equipped with a separator for an internal combustion engine according to an embodiment of the present invention. 3 is a perspective view showing the separator shown in FIG. 2 in half section along the line A-A ', FIG. 4 is a perspective view showing the separator shown in FIG. 2 in a plan view, and FIG. 5 is FIG. It is sectional drawing which shows the separator shown by the cross section along line A-A '.

Referring to Figure 2, the internal combustion engine separator according to an embodiment of the present invention is provided as an identical to the head cover (HC) of the cylinder as shown. The separator SR is provided in the same body on the upper side of the head cover HC as shown.

Referring to FIG. 3, the separator includes a duct 50, a centrifuge 60, a cyclone 70, a damping chamber 80, and a regulator 90.

The duct 50 is fixed to the lower surface of the head cover HC as shown in the same body. In addition, the centrifuge 60 and the cyclone 70 are sequentially connected to the duct 50 as shown in the figure and form the same as the duct 50. In addition, the damping chamber 80 is connected to the cyclone 70 as shown. In addition, the regulator 90 is integrally connected to the damping chamber 80. That is, the duct 50 and the centrifuge 60, the cyclone 70, the damping chamber 80 and the regulator 90 are sequentially connected to form a substantially aligned state as shown.

Here, the above-described centrifuge 60 and the cyclone 70 may be exchanged in a batch order (sort order). That is, the cyclone 70 may be disposed between the duct 50 and the centrifuge 60.

Referring to FIG. 4, the duct 50 has an inlet port 52 through which blow-by gas is introduced as shown. In addition, the duct 50 has a baffle 54 formed at an angle different from the direction of communication of the blow-by gas as shown in the drawing. As shown in the figure, the side wall of the portion adjacent to the centrifuge 60 is inclined to form the duct 50 so that the inner space becomes narrower as it approaches the centrifuge 60. That is, the volume of the duct 50 becomes smaller as it is closer to the centrifuge 60.

The baffle 54 may be composed of a singular number, as shown, but preferably a plurality of baffles 54, as shown. In particular, the baffle 54 is composed of a first baffle 54a adjacent to the inlet 52 of the duct 50 and a second baffle 54b spaced apart from the first baffle 54a as shown. desirable. This baffle 54 is preferably installed inside the duct 50 vertically as shown.

Here, the above-described second baffle 54b is installed inside the duct 50 in a state in which both sides are spaced apart from the inside of the duct 50.

Centrifuge 60 is formed in a cylindrical shape as shown. The centrifuge 60 has a circular flow path 62 as shown. The circular flow path 62 is formed by the circular wall 60b and the central axis 60a formed at the center of the circular wall 60b as shown. That is, the circular flow path 62 is formed by the spaced space between the circular wall 60b and the central axis 60a.

The cyclone 70 is connected to the circular flow path 62 of the centrifuge 60 in communication with the damping chamber 80 as shown.

The damping chamber 80 has a discharge hole 82 on one side as shown (see Figure 3). The discharge hole 82 may be formed in a tube shape as shown, otherwise formed in a hole shape May be

The regulator 90 is integrally mounted on top of the damping chamber 80 as shown.

On the other hand, the first baffle 54a described above provided in the duct 50 may be formed with a plurality of holes. As described above, the second baffle 54b may be formed of a plate without a hole.

On the other hand, the above-described duct 50 may be provided with a bypass plate 59 in the inlet (52). The bypass plate 59 is provided at the inlet 52 of the duct 50 in a state in which one side is spaced apart from the inner side surface of the duct 50.

On the other hand, the cyclone 70 may be provided with a tube pilot 79 to be described later in the center as shown.

Referring to FIG. 5, the duct 50 is formed in the same body as the centrifuge 60 and the cyclone 70, and is installed on the lower surface of the head cover HC. Therefore, the duct 50 provides a flow path through which blow-by gas is communicated to the lower portion of the head cover HC as shown.

As shown in the drawing, the first baffle 54a is installed in the duct 50 with the lower end spaced apart from the bottom of the duct 50. The second baffle 54a is installed on the bottom surface of the duct 50 while being spaced apart from the lower surface of the head cover HC as shown. Therefore, the first baffle 54a and the second baffle 54b are zigzag-shaped curved flow paths inside the duct 50 through end portions spaced apart from the bottom of the duct 50 and the bottom surface of the head cover HC. To provide. That is, the first baffle 54a and the second baffle 54b are installed inside the duct 50 in a state where communication of blow-by gas is possible.

Bypass plate 59 is provided in the inlet 52 of the duct 50 in a form opposite to the inflow direction of the blow-by gas as shown. Bypass plate 59 is bent in the duct 50 as shown to form a state inserted into the inlet (52). As shown in the bypass plate 59, the condensation protrusion 59a may protrude from the surface in a direction opposite to the traveling direction (inflow direction) of the blow-by gas.

Cyclone 70 is formed as a cone of the upper and lower narrow as shown, and has an oil hole 72 at the bottom. The cyclone 70 is in communication with the damping chamber 80 and the upper end as shown. As shown in the cyclone 70, the tube pilot 79 is provided at the center.

As shown in the drawing, the tube pilot 79 communicates with one side of the damping chamber 80 to provide an inlet through which the blow-by gas is supplied to the damping chamber 80, and the other side is inserted into the inner center of the cyclone 70. do. Tube pilot 79 may be formed in the same body to the head cover (HC) for shielding the upper portion of the cyclone 70 as shown, unlike the head cover (HC) is formed separately from the head cover (HC) ) May be attached.

The damping chamber 80 has a very large volume compared to the cross sectional area of the tube pilot 79 as shown. That is, the damping chamber 80 has a very large volume compared to the flow rate flowing through the tube pilot 79.

The regulator 90 is a valve-type member of a sealed type in which air supply holes 90a through which blow-by gas is supplied and exhaust holes 90b through which the blow-in gas is introduced are formed. The regulator 90 includes a housing 92 having a space therein, a diaphragm 94 embedded in the housing 92, and an elastic body 96 that elastically supports the diaphragm 94 as shown in an enlarged view at the top of the figure. ).

The housing 92 is composed of a case 92a and a cover 92b as shown enlarged. As shown in the enlarged case, the air supply hole 90a and the exhaust hole 90b and the receiving groove 92a 'are described later, and the case 92a is coupled to the damping chamber 80 in the same manner. The cover 92b has a vacuum preventing hole 92b 'in communication with the outside as shown in an enlarged view.

The diaphragm 94 remains attached to the lower surface of the cover 92b inside the housing 92 as it is supported by the elastic body 96 as shown when the internal combustion engine is inoperative. The diaphragm 94 is firmly fixed to the inside of the housing 92 as the rim is fitted between the case 92a and the cover 92b as shown in an enlarged view.

Diaphragm 94 may be provided with a support plate 98 on the lower surface as shown. The support plate 98 supports the lower surface of the diaphragm 94 to keep the diaphragm 94 in an unfolded state.

As shown in the enlarged view, the elastic body 96 elastically supports the diaphragm 94 in a state where one end is accommodated in the accommodation groove 92a 'of the case 92a. The elastic body 96 elastically supports the lower part of the supporting plate 98 when the supporting plate 98 is provided below the diaphragm 94. That is, the elastic body 96 elastically supports the diaphragm 94 through the support plate 98.

On the other hand, the first baffle 54a described above has a plurality of holes HL, as shown enlarged at the bottom of the figure. As shown in the enlarged view, the first baffle 54a has a gap gap GP formed at a lower end thereof as the lower part is spaced apart from the duct 50.

Referring to Figure 5 attached to the operation of the internal combustion engine separator according to an embodiment of the present invention configured as described above are as follows.

As shown, the duct 50 guides the blow-by gas flowing through the inlet 52 on the rear side to the centrifuge 60 on the front side as shown. At this time, the blow-by gas is guided to the duct 50 by the vacuum pressure of the intake manifold not shown, which is transmitted through the discharge hole 82 of the damping chamber 80.

The duct 50 guides the blow-by gas to the bent state through the first baffle 54a and the second baffle 54b as shown. That is, the blow-by gas advances forward while passing through the lower end of the first baffle 54a and the upper end of the second baffle 54b. Of course, the blow-by gas proceeds in a curved state while hitting the surfaces of the first baffle 54a and the second baffle 54b. At this time, the first baffle 54a and the second baffle 54b are coalesced with the evaporation engine oil contained in the blow-by gas. Accordingly, the duct 50 primarily separates the evaporation engine oil from the blow-by gas through the first baffle 54a and the second baffle 54b. When the internal combustion engine is stopped, the evaporation engine oil separated in this way is the inlet port of the duct 50 via the side of the second baffle 54b, the lower part of the first baffle 54a, and the side of the bypass plate 59. 52) to the cylinder not shown again.

The centrifuge 60 receives the blow-by gas from the duct 50 via the first baffle 54a and the second baffle 54b as shown. At this time, the centrifuge 60 separates the evaporation engine oil from the blowby gas by using centrifugal force while rotating the blowby gas through the circular flow path 62. This separated evaporation engine oil is supplied back to the cylinder not shown again through the inlet 52 of the duct 50 in the same manner as described above when the internal combustion engine is stopped.

The cyclone 70 separates the evaporation engine oil from the blowby gas in a third manner while vortexing the blowby gas discharged from the centrifuge 60 as shown. The cyclone 70 supplies the separated evaporation engine oil to the cylinder (not shown) through the lower oil hole 72.

On the other hand, while the tube pilot 79 vortex vortex from the lower portion of the cyclone 70 to rotate the blow-by gas rising to the upper portion of the cyclone 70 to rotate. The tube pilot 79 supplies the blow-by gas vortexed from the lower portion of the cyclone 70 through the lower end to the damping chamber 80. Of course, the blow-by gas is rotated more inside the cyclone 70 due to the tube pilot 79. That is, the blow-by gas is rotated less if there is no tube pilot 79 and then supplied to the damping chamber 80.

The damping chamber 80 collects the blow-by gas flowing through the tube pilot 79 while spreading through its volume as shown. That is, the damping chamber 80 collects while blowing the blow-by gas. Of course, the blow-by gas is diffused into the damping chamber 80 as it is discharged from the tube pilot 79 having a narrow cross-sectional area into the damping chamber 80. Accordingly, the damping chamber 80 damps the pressure of the blow-by gas while diffusing the blow-by gas.

The regulator 90 receives the blow-by gas damped in the damping chamber 80 through the air supply hole 90a and discharges it through the exhaust hole 90b. At this time, the regulator 90 adjusts the pressure of the blow-by gas to the set pressure through the diaphragm 94 slightly lowered as shown by a broken line in the enlarged view of the upper part of the drawing by the vacuum pressure of the intake manifold (not shown). That is, the regulator 90 reduces the communication area of the blow-by gas while the diaphragm 94 descends to adjust the pressure of the blow-by gas to the set pressure. At this time, the diaphragm 94 descends while compressing the elastic body 96. Of course, the elastic body 96 elastically supports the diaphragm 94 to prevent the diaphragm 94 from being adsorbed on the bottom surface of the case 92a.

Here, the above-described diaphragm 94 is smoothly lowered as the atmospheric pressure is supplied through the vacuum prevention hole 92b 'formed in the cover 92b of the regulator 90 as shown in an enlarged view at the top of the figure. In addition, the diaphragm 94 descends in an unfolded state as it is supported by the support plate 98.

On the other hand, the damping chamber 80 discharges the blow-by gas discharged from the exhaust hole (90b) of the regulator 90 through the discharge hole 82 of one side. Of course, the blow-by gas discharged to the discharge hole 82 is supplied back to the intake manifold (not shown).

On the other hand, the duct 50 distributes the blow-by gas introduced into the inlet 52 through the holes HL of the first baffle 54a as shown in the lower part of the figure. At this time, the first baffle 54a serves as a filter for filtering the evaporation engine oil as the blow-by gas passes through the holes HL. Therefore, the duct 50 separates the evaporation engine oil more efficiently.

In addition, since the bypass plate 59 faces the inflow direction of the blow-by gas in the inlet 52, the duct 50 evaporates through the bypass plate 59 before the blow-by gas flows into the duct 50. The engine oil can be separated preliminarily. Of course, when the bypass plate 59 is blown to the inlet 52 of the duct 50 after the blow-by gas collides with the surface, the evaporation engine oil contained in the blow-by gas is adhered to the surface. Therefore, the bypass plate 59 separates the evaporation engine oil preliminarily from the blow-by gas.

In the bypass plate 59, the evaporation engine oil condenses on the condensation protrusion 59a of the surface. Therefore, the bypass plate 59 separates the evaporation engine oil from the blow-by gas more smoothly.

Since the above embodiments are merely illustrative of preferred embodiments of the present invention, the scope of application of the present invention is not limited to the above, and appropriate modifications are possible within the scope of the same idea. Therefore, since the shape and structure of each component shown in the embodiment of the present invention can be carried out by deformation, it is natural that the modification of the shape and structure belong to the appended claims of the present invention.

1 is a conceptual diagram schematically showing the operation of a separator for a general internal combustion engine;

2 is a perspective view showing a head cover equipped with a separator for an internal combustion engine according to an embodiment of the present invention;

3 is a perspective view of the separator shown in FIG. 2 in half section along the line AA ′;

4 is a perspective view showing the separator shown in FIG. 2 in a plan view; And

FIG. 5 is a cross-sectional view of the separator shown in FIG. 2 taken along the line AA ′. FIG.

<Description of Major Symbols in Drawing>

50: duct

60: centrifuge

70: cyclone

80: damping chamber

90: regulator

Claims (7)

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 integrally provided in the head cover HC of the internal combustion engine, and has an inlet 52 through which blow-by gas flows into one side. A duct 50 having a baffle 54 for separating therein; A circular flow path 62 having a circular structure for rotating the blow-by gas via the duct 50 is provided to separate the evaporation engine oil from the blow-by gas while rotating the blow-by gas passed through the duct 50. Centrifuge (60); The blowby gas is supplied from either the centrifuge 60 or the duct 50, and the evaporation engine oil is separated from the blowby gas in a tertiary manner by vortexing the supplied blowby gas as the inner diameter is expanded toward the discharge side. A cyclone 70 having an oil hole 72 on which one side of the evaporation engine oil is discharged; The blowby gas is supplied from either the cyclone 70 or the centrifugal separator 60, is collected while diffusing the supplied blowby gas to damp the pressure of the blowby gas, and discharges the blowby gas to one side. A damping chamber 80 having a discharge hole 82; And It includes a regulator 90 for adjusting the set pressure while bypassing the blow-by gas damped in the damping chamber 80, The duct 50, The bypass plate is provided in the inlet 52 to face the inflow direction of the blow-by gas, and bypasses the blow-by gas flowing into the inlet 52 while preliminarily separating the evaporation engine oil from the blow-by gas. A separator for an internal combustion engine, further comprising (59). The method of claim 1, wherein the duct 50, A primary baffle (54a) which receives the blow-by gas from the inlet port 52 and is installed in a state in which the blow-by gas can be communicated; And Separator for the internal combustion engine comprising a secondary baffle (54b) is installed in a state capable of communicating with the blow-by gas while forming a state spaced apart from the primary baffle (54a). The method of claim 2, At least one of the baffles (54a, 54b) is a separator for an internal combustion engine further comprises a hole-shaped dispersion means for dispersing blow-by gas. delete The method of claim 1, wherein the bypass plate 59, The internal combustion engine separator further includes a convex protrusion (59a) to protrude in a direction opposite to the direction of the blow-by gas flowing in the inlet (52) to condense the evaporation engine oil flowing into the inlet (52). The method of claim 1, wherein the regulator 90, The air supply hole 90a through which the blow-by gas is supplied from the damping chamber 80 and the exhaust hole 90b through which the introduced blow-by gas is discharged are provided, thereby providing the blow-by gas through the air supply hole 90a and the exhaust hole 90b. A housing 92 which communicates therewith; A diaphragm 94 provided inside the housing 92 and adjusting the pressure of the blow-by gas communicated to the housing 92 while flowing by the vacuum pressure of the damping chamber 80 to a predetermined pressure; And And an elastic body (96) for elastically supporting the diaphragm (94) in the housing (92) to prevent the diaphragm (94) from being adsorbed into the housing (92) by vacuum pressure. . The method according to any one of claims 1 to 3 or 5 to 6, Further comprising a circulating member for flowing the blow-by gas in the cyclone 70 to supply to the damping chamber 80, The flow member, One side is in communication with the damping chamber 80 to provide an inlet for supplying blow-by gas to the damping chamber 80, and the other side is a tube pilot 79 inserted into the cyclone 70. Separators for internal combustion engines.

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