KR20210085007A - Ventilation pressure regurating valve device of internal combustion engine - Google Patents

Abstract

The present invention relates to a ventilation pressure regulating valve apparatus for an internal combustion engine. The ventilation pressure regulating valve apparatus for an internal combustion engine according to the disclosed invention comprises: a housing unit having a valve flow path through which blow-by gas generated from the internal combustion engine passes; a filter unit provided inside the housing unit to correspond to the valve flow path and filtering the blow-by gas; and an opening/closing unit elastically deformable to selectively exhaust the blow-by gas in association with a differential pressure of the blow-by gas in the housing unit. The opening/closing unit has an elastic deformation range due to the differential pressure of the blow-by gas, wherein the elastic deformation range can be regulated by a support means in which the opening/closing unit is installed. According to this configuration, it is safe to use the ventilation pressure regulating valve apparatus even when the differential pressure is generated by the blow-by gas, and thus ventilation pressure regulating is advantageous. An object of the present invention is to provide the ventilation pressure regulating valve apparatus for the internal combustion engine, which facilitates external discharge of the blow-by gas.

Description

VENTILATION PRESSURE REGURATING VALVE DEVICE OF INTERNAL COMBUSTION ENGINE}

The present invention relates to a ventilation pressure regulating valve device for an internal combustion engine, and more particularly, to a flow flow inside the ventilation of an internal combustion engine even when a filter differential pressure is generated due to oil particles in a blow-by gas generated by the stroke of an internal combustion engine of a vehicle. It relates to a ventilation pressure regulating valve device for an internal combustion engine that can prevent inhibition and improve safety in use.

As interest in the environment is gradually increasing, the automobile industry is also realizing exhaust gas reduction by separating oil particles in blow-by gas and recirculating unburned fuel to the combustion chamber. At this time, when oil and vapor-state oil particles contained in the blow-by gas are introduced into the combustion chamber without being filtered, problems of lowering combustion efficiency and generation of impurities are caused. Accordingly, in recent years, before the blow-by gas is introduced into the combustion chamber, a separator technology for filtering oil particles is in demand.

On the other hand, the separator technology of an internal combustion engine, which is generally used, is a labyrinth type that separates oil particles by forming a complicated flow path between the blow-by gas and the combustion chamber, and the blow-by gas is accelerated from multiple orifices called multi-holes. There are a multi-impactor type that separates oil particles by colliding with a wall, and a filter type that filters oil particles using a filtering medium. Among these various separator technologies, the filter type has an advantage in that relatively small oil particles can be separated among other separator methods.

In recent years, continuous research on a separator technology that does not impede the flow of the blow-by gas while improving the oil particle separation efficiency of the blow-by gas is being conducted.

Domestic Registered Patent No. 10-1544727 (Registration Date: August 10, 2015) Domestic Registered Patent No. 10-1317516 (Registration Date: October 04, 2013)

It is an object of the present invention to provide a ventilation pressure regulating valve device for an internal combustion engine that has a simple structure and can easily discharge the blow-by gas to the outside even when a filter differential pressure is generated due to oil particles in the blow-by gas inside the ventilation of the internal combustion engine. it is for

Another object of the present invention is to provide a ventilation pressure regulating valve device for an internal combustion engine capable of improving safety and reliability in use by regulating an operating range of an opening/closing unit by an internal differential pressure.

According to an aspect of the present invention, there is provided a ventilation pressure regulating valve device for an internal combustion engine according to the present invention for achieving the above object, a housing portion in which a valve passage through which blow-by gas generated from an internal combustion engine passes is provided, and the housing corresponds to the valve passage. A filter unit provided inside the unit to filter the blow-by gas, and an opening and closing unit elastically deformable to selectively exhaust the blow-by gas by interlocking with the differential pressure of the blow-by gas, wherein the opening and closing unit includes the blow-by gas. The elastic deformation range due to the differential pressure of the gas can be regulated by the support means for supporting the opening and closing part.

In addition, the housing unit includes a first housing in which the filter unit is seated and through which a first passage hole communicating with the valve passage is formed, and is coupled to the first housing with the filter unit interposed therebetween, and the first passage hole and a second housing through which a second passage hole communicating with the valve passage is formed to face and communicate with the valve passage, and the opening and closing portion is provided to support the filter portion inside the first and second housings, When the differential pressure is generated, the opening/closing unit may be elastically deformed to the extent that it interferes with the second housing while supporting the filter unit.

In addition, a filter guider for guiding an installation position of the filter unit may be integrally provided in any one of the first and second housings.

In addition, the filter guider may protrude from any one of the first and second housings toward the other and be insertable to penetrate the filter unit in the thickness direction.

In addition, the first housing includes a base and a support member protruding from the base toward the second housing to support the filter part provided with a support protrusion protruding therein for supporting the filter part, and the second housing may be provided in a cap shape to surround the support member.

In addition, a first drain flow path through which the oil particles filtered from the blow-by gas are discharged is provided in the first housing, and a second drain flow path through which the oil particles are discharged in communication with the first drain flow path in the second housing can be provided.

In addition, the support member is provided with a seating protrusion on which the opening and closing part is seated, and at least one installation protrusion protruding from the outer periphery of the opening and closing part is inserted into the seating jaw, and at least one installation guide for preventing rotation of the opening and closing part A home may be provided.

In addition, at least one first and second housing ribs interfering to prevent the filter unit from being separated from the first and second passage holes are provided in a radial direction of each of the first and second passage holes, and the at least one first and second housing ribs are provided in the respective radial directions. The filter guider may be provided to protrude from the center where the first housing ribs cross each other.

In addition, a snap groove may be provided in any one of the first and second housings, and a snap protrusion capable of selectively engaging and fixing to the snap groove may be provided in the other one of the first and second housings.

In addition, the valve passage and the opening and closing passage communicating with the flow path of the blow-by gas includes a support formed through each other adjacent to each other, the housing portion provided with the filter unit is installed inside the valve passage, the opening and closing portion in the opening and closing passage can be installed.

In addition, the filter part covers the valve flow path and is closely installed so as not to flow inside the housing part, and the opening/closing part is provided to cover the opening/closing flow path, one end is fixed to the support part, and the other end of the blow-by gas. It may be provided to be elastically deformable by the pressing force by the differential pressure.

According to another aspect of the present invention, there is provided a ventilation pressure regulating valve device for an internal combustion engine, including a first housing provided with a first passage hole through which blow-by gas generated from an internal combustion engine is introduced, and facing the first passage hole. A housing unit including a second housing having a second passage hole through which the blow-by gas is discharged, a filter unit provided to allow the blow-by gas to pass through the housing unit and filtering the blow-by gas, and the filter; It is provided inside the housing to support the part, and is elastically deformed in association with the differential pressure of the blow-by gas, and the blow-by gas introduced into the first flow hole guides so that the blow-by gas is discharged to the second flow hole without passing through the filter part. and an opening/closing unit, wherein the elastic deformation range of the opening/closing unit is regulated by the second housing.

In addition, a filter guider for guiding an installation position of the filter unit may be integrally provided in the first housing to be inserted through the filter unit and the opening/closing unit.

In addition, the first housing includes a base and a support member protruding from the base toward the second housing to support the filter part provided with a support protrusion protruding therein for supporting the filter part, and the second housing may be provided in a cap shape to surround the support member.

In addition, a first drain flow path through which the oil particles filtered from the blow-by gas are discharged is provided in the first housing, and a second drain flow path through which the oil particles are discharged in communication with the first drain flow path in the second housing can be provided.

In addition, the support member is provided with a seating protrusion on which the opening and closing part is seated, and at least one installation protrusion protruding from the outer periphery of the opening and closing part is inserted into the seating jaw, and at least one installation guide for preventing rotation of the opening and closing part A home may be provided.

Also, at least one first and second housing ribs interfering with the filter unit so as not to be separated from the first and second passage holes may be provided in a radial direction of each of the first and second passage holes.

In addition, a snap groove may be provided in any one of the first and second housings, and a snap protrusion capable of selectively engaging and fixing to the snap groove may be provided in the other one of the first and second housings.

In accordance with another aspect of the present invention, there is provided a ventilation pressure control valve device for an internal combustion engine, a support portion provided with a valve passage and an opening/closing passage through which blow-by gas generated from an internal combustion engine passes, and the support portion to communicate with the valve passage of the support portion. a housing provided in the housing unit, a filter unit provided inside the housing unit to correspond to the valve flow path and filtering the blow-by gas, and the support unit provided in communication with the opening/closing flow path to interlock with the differential pressure of the blow-by gas and an opening/closing part to selectively exhaust the blow-by gas.

In addition, the filter unit may cover the valve passage and may be closely installed so as not to flow inside the housing unit.

In addition, the opening and closing part may include a leaf spring having an area covering the opening/closing flow path, one end fixed to the support part and the other end being provided to be elastically deformable by a pressing force by the differential pressure of the blow-by gas.

According to the present invention having the above configuration, first, in separating oil particles from the blow-by gas discharged from the ventilation of the internal combustion engine using a filter, the blow-by gas can be exhausted even when an internal differential pressure occurs. , the pressure can be adjusted so as not to impede the flow flow inside the ventilation.

Second, due to the simple structure in which the installation guider capable of guiding the installation of the filter unit in the housing unit is provided integrally, it is possible to expect the effect of improving the assembling property while reducing the cost due to the reduction in the number of assembly parts.

Third, since the housing unit can regulate the deformation range of the opening/closing unit provided integrally with the filter unit, it is possible to improve the problem of lowering reliability of use due to excessive elastic deformation of the opening/closing unit.

Fourth, by providing a drain passage capable of discharging oil particles from the inside of the housing unit, it is possible to contribute to suppression of internal pressure differential.

Fifth, by filtering the oil particles of the blow-by gas through a filter unit including a fiber material, even oil particles of a very small size can be separated from the blow-by gas, so that the filtering quality is excellent.

1 is a perspective view schematically showing a ventilation pressure regulating valve device of an internal combustion engine according to a preferred embodiment of the present invention.
FIG. 2 is an exploded perspective view schematically illustrating an exploded view of the ventilation pressure regulating valve device of the internal combustion engine shown in FIG. 1 .
FIG. 3 is a perspective view schematically illustrating a state in which an opening/closing unit is seated on the first housing shown in FIG. 2 .
4 is a schematic enlarged cross-sectional view illustrating a state in which the first and second housings of FIG. 1 are coupled to each other by a snap method.
5 is a cross-sectional view schematically cut along the line A-A' of FIG. 1 .
6 is a cross-sectional view schematically illustrating a state in which a valve flow path is opened by an opening/closing unit when a differential pressure of the blow-by gas is generated.
7 is a perspective view schematically illustrating a ventilation pressure regulating valve device of an internal combustion engine according to another preferred embodiment of the present invention.
8 is a cross-sectional view schematically cut along the line VIII-VIII shown in FIG. 7 . And,
9 is a cross-sectional view schematically cut along the line IX-IX shown in FIG. 7 .

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. However, the spirit of the present invention is not limited to such embodiments, and the spirit of the present invention may be proposed differently by adding, changing, and deleting components constituting the embodiment, but this is also included in the scope of the present invention. will become

1 is a perspective view schematically showing a ventilation pressure regulating valve device 1 of an internal combustion engine according to a preferred embodiment of the present invention, and FIG. 2 is a ventilation pressure regulating valve device 1 of the internal combustion engine shown in FIG. ) is an exploded perspective view schematically exploded.

Referring to FIG. 1 , the ventilation pressure regulating valve device 1 of an internal combustion engine according to a preferred embodiment of the present invention includes a housing 10 , a filter 40 , and an opening/closing part 50 .

For reference, the ventilation pressure regulating valve device 1 of the internal combustion engine described in the present invention is located on the ventilation cover in which the flow path of the blow-by gas (G) generated from the ventilation of the internal combustion engine is formed. installed as an example. In addition, the ventilation pressure control valve device 1 of the internal combustion engine may be applied to a separator device (not shown) for separating oil particles from the blow-by gas (G). Since the configuration of the internal combustion engine to which the ventilation pressure control valve device 1 of the internal combustion engine is applied can be understood from known techniques, detailed illustration and description thereof will be omitted.

The housing unit 10 is provided on the flow path of the blow-by gas (G) generated from the internal combustion engine, and communicates with the flow path of the blow-by gas (G) therein, and the blow-by gas (G) is introduced and discharged from the valve flow path ( 11) is provided. Here, the housing part 10 is a kind of valve body mounted on the separator of the ventilation cover for separating the oil particles from the blow-by gas (G). As shown in FIG. 2 , the housing part 10 includes first and second housings 20 and 30 coupled to each other.

The first housing 20 is provided with an installation space 21 in which a filter part 40 to be described later is inserted and seated therein, and a first passage hole 22 communicating with the valve passage 11 is provided in the installation space 21 . ) is formed through The first housing 20 includes a base 23 and a support member 24 protruding vertically upward from the base 23 .

The base 23 has a substantially flat plate shape. The support member 24 protrudes from the base 23 in a vertical upward direction, that is, toward the facing second housing 30 , and an installation space 21 is provided therein. In this embodiment, by illustrating that the filter unit 40 to be described later has a cylindrical shape having a predetermined height, the support member 24 is exemplified as protruding from the base 23 in the shape of a cylindrical container having a hollow inside. However, the shape of the support member 24 is not limited to the illustrated example, and it is of course that it may be provided in various container shapes having a hollow interior.

A first passage hole 22 is formed through the base 23 communicating with the installation space 21 inside the support member 24 , and the filter unit 40 is prevented from leaking through the first passage hole 22 . A first housing rib 25 is provided in the first passage hole 22 for the purpose. At least one of the first housing ribs 25 is provided to cross each other in the radial direction of the first flow hole 22, and in this embodiment, three ribs are exemplified as intersecting each other.

At the center where the first housing ribs 25 cross each other, a filter guider 26 for guiding the installation position of the filter unit 40 to be described later is provided to protrude integrally. Here, the filter guider 26 has a substantially cylindrical shape and is provided to protrude from the first housing rib 25 and penetrate the filter unit 40 to be described later.

On the other hand, a modified example in which the filter guider 26 is provided integrally protruding from the second housing 30 instead of the first housing 20 is also possible.

A first drain flow path 27 through which oil particles filtered from the blow-by gas G can be discharged is formed between the base 23 of the first housing 20 and the support member 24 . In addition, as shown in FIGS. 2 and 3 , a stepped seating jaw 29 is provided on the support member 24 of the first housing 20 so that the opening/closing part 50 to be described later is mounted.

The seating jaw 29 is provided to be stepped along the outer periphery of the support member 24 having a hollow cylindrical container shape, and the seating jaw 29 has an installation guide groove 29a for guiding the installation position of the opening and closing part 50 . At least one of these may be provided. The configuration of this installation guide groove (29a) will be described later in more detail together with the configuration of the opening and closing part (50).

The second housing 30 is coupled to the first housing 20 so as to cover the installation space 21 with the filter unit 40 installed in the installation space 21 interposed therebetween. As shown in FIGS. 1 and 2 , the second housing 30 has a cap shape surrounding the support member 24 of the first housing 20 .

In addition, in the second housing 30 , a second passage hole 31 is formed through a surface facing the first passage hole 22 of the first housing 20 to communicate with the valve passage 11 . Due to this configuration, when the second housing 30 is coupled to the first housing 20, the first and second passage holes 22 and 31 communicate with each other, so that the inside of the ventilation cover (not shown) is A valve flow path 11 through which the blow-by gas (G) can flow to the outside is provided.

At least one second housing rib 32 interfering to prevent the filter unit 40 from being separated is provided in the second passage hole 31 , similarly to the first passage hole 22 , the diameter of the second passage hole 31 . direction is provided. In this embodiment, it is exemplified that the three second housing ribs 32 are provided in the radial direction of the second passage hole 31 to cross each other. A guider hole 33 may be provided at the center where the three second housing ribs 32 intersect each other so that the end of the filter guider 26 protruding from the first housing 20 can be inserted.

In addition, in the second housing 30 , a second drain passage 34 is provided to communicate with the first drain passage 27 of the first housing 20 . Accordingly, the first and second drain passages 27 and 34 communicate with each other in a state in which the first and second housings 20 and 30 are coupled to each other, so that the oil particles separated from the blow-by gas G may be discharged to the outside through the first and second drain passages 27 and 34 .

Meanwhile, as shown in FIG. 4 , the first and second housings 20 and 30 are coupled to each other in a snap-fit assembly method. More specifically, the first housing 20 is provided with a snap protrusion 28 , and the second housing 30 is provided with a snap groove 35 that can be selectively engaged and fixed to the snap protrusion 28 to protrude. As the snap protrusion 28 of the first housing 20 is inserted into the snap groove 35 of the second housing 30, the first and second housings 20 and 30 are maintained in a state coupled to each other. . In addition, when the snap protrusion 28 is pressed toward the installation space 21 by an external force and separated from the snap groove 35, the coupling force of the first and second housings 20 and 30 is released to separate them from each other. may be

The filter unit 40 is provided to correspond to the valve flow path 11 of the housing unit 10 to filter oil particles from the blow-by gas (G). As shown in FIGS. 1 and 2 , the filter unit 40 has a sufficient area to cover the valve flow path 11 , thereby closing the valve flow path 11 . The filter unit 40 is stacked on the support protrusion 23a protruding from the base 23 of the first housing 20 to the inside of the support member 24 , and is inserted and supported in the support member 24 . .

Meanwhile, the filter unit 40 corresponds to the valve flow path 11 , thereby closing the valve flow path 11 between the first and second housings 20 and 30 (see FIG. 5 ). Therefore, the blow-by gas (G) introduced through the first passage hole 22 of the first housing 20 passes through the filter unit 40 to the second passage hole 31 of the second housing 30 . is emitted as

In addition, when the filter unit 40 moves toward the second housing 30 due to elastic deformation of the opening and closing unit 50 to be described later (see FIG. 6 ), the first and second housings closed by the filter unit 40 ( The valve flow path 11 between 20 and 30 is opened. Accordingly, the blow-by gas (G) may be discharged from the first housing 20 to the second housing 30 side without passing through the filter unit 40 .

At least a portion of the filter unit 40 is preferably formed of a fibrous material so that the blow-by gas (G) introduced into the valve flow path 11 can pass therethrough. In this embodiment, as shown in FIG. 2, the filter unit 40 is exemplified as a cylindrical nonwoven fabric having a predetermined thickness, but it is of course not limited thereto.

Meanwhile, an insertion hole 41 into which the filter guider 26 integrally protruding from the center of the housing 20 can be inserted is formed in the approximate center of the filter unit 40 . By inserting the filter guider 26 into the insertion hole 41 of the filter unit 40, the filter unit 40 is prevented from rotating in the radial direction during valve operation, thereby improving the filtering quality.

The opening/closing unit 50 elastically supports the filter unit 40 so that the filter unit 40 closes the valve path 11 by the differential pressure of the blow-by gas G in the valve path 11 of the housing unit 10 . Operate in the direction of opening or closing. The opening/closing unit 50 is provided to be in surface contact with one surface of the filter unit 40 , and is movable integrally with the filter unit 40 .

More specifically, the opening/closing part 50 is elastically deformed toward the second housing 30 in the discharge direction of the blow-by gas G by the differential pressure in the valve flow path 11 to open the valve flow path 11, and then the differential pressure is When released, it can return to its initial position by elastic restoring force.

That is, the opening/closing part 50 is composed of an elastic member that can be elastically deformed by the differential pressure in the valve passage 11 , and in this embodiment, it is exemplified as including a plate spring having a disk shape as shown in FIG. 2 . The opening/closing part 50 is preferably formed of a flexible thin plate to facilitate elastic deformation. In addition, the opening/closing part 50 may be formed of a metal material that is elastically deformable and is not easily damaged.

For reference, as the oil particles of the blow-by gas (G) passing through the housing unit 10 are continuously filtered by the filter unit 40, the filter unit 40 formed of a fiber material is blocked by the oil particles. This can happen. A differential pressure is generated between the inside and the outside of the valve flow path 11 due to clogging of the entire area or a partial area of the filter unit 40 .

As shown in FIG. 2 , the opening/closing part 50 has an area capable of covering the valve flow path 11 while supporting the filter unit 40 on one surface facing the valve flow path 11 . A plurality of opening and closing guide holes 31 for guiding the passage of the blow-by gas G are formed through the opening and closing part 50 .

A plurality of opening/closing guide holes 31 penetrating through the opening/closing unit 50 may be formed in a spiral direction to induce acceleration of the blow-by gas G in a region overlapping with the filter unit 40 . However, it goes without saying that the shape of the opening/closing guide hole 31 is not limited to the illustrated example.

As shown in FIG. 3 , the opening/closing part 50 is seated and installed so that the outer periphery is supported by the seating jaw 29 provided on the upper end of the support member 24 of the first housing 20 . In addition, at least one installation protrusion 52 is provided on the outer periphery of the opening/closing part 50 and inserted into the guide groove 29a provided in the seating jaw 29 .

Here, a plurality of installation protrusions 52 may be provided to be spaced apart from each other at equal intervals as shown in FIG. 2 , and in this embodiment, three protrusions are provided. By inserting the three installation protrusions 52 protruding from the outer periphery of the opening and closing part 50 into the guide groove 29a provided at the upper end of the first housing 20, the opening and closing part 50 can be installed in the correct position, By preventing the opening/closing part 50 from rotating by the acceleration force of the blow-by gas (G), it is advantageous to maintain performance.

In addition, the elastic deformation range of the opening/closing part 50 is regulated by the cap-shaped second housing 30 . More specifically, as shown in FIG. 5 , a predetermined distance D is provided between the opening and closing part 50 seated on the upper end of the support member 24 of the first housing 30 and the second housing 30 , as shown in FIG. Likewise, the opening/closing part 50 is elastically deformed by the spaced distance D from the second housing 30 . The deformation range of the opening/closing part 50 elastically deformed toward the second housing 30 by the differential pressure of the blow-by gas G is interfered with by the inner surface of the second housing 30 to be regulated.

For reference, a connection hole 53 is formed through the center of the opening and closing part 50 facing the insertion hole 41 of the filter part 40 . An end passing through the insertion hole 41 of the filter guider 26 protruding from the base 23 of the first housing 20 may be inserted into the connection hole 53 .

In addition, as shown in FIG. 4 , the edge of the filter unit 40 protrudes from the second housing 30 toward the first housing 20 and is pressed toward the first housing 20 by the interference protrusion 36 . interfere with Since the edge of the filter unit 40 is interfered with by the interference protrusion 36 , the edge may be fixed without flowing even when the opening/closing unit 50 is elastically deformed due to the differential pressure due to the blow-by gas (G).

Hereinafter, a valve operation of the ventilation pressure regulating valve device 1 of an internal combustion engine according to a preferred embodiment of the present invention will be described with reference to FIGS. 5 and 6 .

First, as shown in FIG. 5 , the filter unit 40 and the opening/closing unit 50 are provided inside the first and second housings 20 and 30 of the housing unit 10 . Here, the filter unit 40 and the opening/closing unit 50 are in a state in which they face each other and are in surface contact, and the first and second housings 20 and 30 are formed with the filter unit 40 and the opening/closing unit 50 interposed therebetween. The first and second passage holes 22 and 31 are coupled to each other by the snap hole 28 and the snap groove 35 to communicate with each other.

For reference, the filter unit 40 is inserted into the support member 24 of the first housing 20 and is supported by the support protrusion 23a protruding from the base 23 . At this time, by inserting the filter guider 26 of the first housing 20 into the insertion hole 41 of the filter unit 40, the installation position of the filter unit 40 is guided. In addition, as shown in FIG. 3 , the opening/closing unit 50 is seated on a seating protrusion 29 provided on the upper end of the support member 24 , and the installation protrusion 52 protruding from the outer periphery of the opening/closing unit 40 is a guide groove 29a. The position is fixed so that it is inserted into the

When the blow-by gas G is introduced into the valve passage 11 provided in the housing 10 , the blow-by gas G passes through the filter unit 40 formed of a nonwoven fabric and is discharged to the outside. At this time, the oil particles of the blow-by gas G are filtered by the filter unit 40 , and the filtered oil particles are first and second drain passages communicating with each other in the first and second housings 20 and 30 . It can be discharged to the outside through (27) and (34).

On the other hand, due to an abnormal factor of the filter unit 40 such as clogging by oil particles, a differential pressure of the blow-by gas G may act in the valve passage 11 . Due to this differential pressure, as shown in FIG. 6 , the opening/closing part 50 is elastically deformed toward the discharge direction of the blow-by gas G, that is, toward the second passage hole 31 of the second housing 30 . Therefore, the filter part 40 which is in surface contact with the opening/closing part 50 and closing the valve flow path 11 also moves in the discharge direction of the blow-by gas G, so that the valve flow path 11 is opened. Here, the opening/closing part 50 is elastically deformed only by the distance D between the opening/closing part 50 and the second housing 30, which is a range that interferes with the second housing 30 .

As the valve flow path 11 between the first and second housings 20 and 30 is opened, the blow-by gas (G) generating a differential pressure in the valve flow path 11 is introduced into the second housing 30 to be removed. It is discharged from the 2 passage hole 31 . Therefore, the flow of the blow-by gas (G) inside the ventilation can be circulated without being blocked.

On the other hand, the filter unit 40 that is clogged due to continuous filtering of the blow-by gas G is replaced by an operator or oil particles are separated or vaporized from the filter unit 40 by the opening of the valve flow path 11 . , the filtering performance may be restored. In this way, when the filtering performance of the filter unit 40 is recovered and the blow-by gas G can be filtered, the differential pressure in the valve passage 11 is released. When the differential pressure in the valve flow path 11 is released, the opening/closing unit 50 is restored to its initial position by the elastic restoring force.

Therefore, as shown in FIG. 5 , the filter unit 40 interlocking with the opening/closing unit 50 closes the valve flow path 11 again to discharge only the blow-by gas G, which is a gas, to pass through the filter unit 40 . . In addition, the blow-by gas G passing through the filter unit 40 is discharged to the outside through the first and second drain passages 27 and 34 while being filtered by the filter unit 40 .

7 is a perspective view schematically showing a ventilation pressure regulating valve device 100 of an internal combustion engine according to another preferred embodiment of the present invention. 8 is a cross-sectional view taken along the line VIII-VIII shown in FIG. 7, showing the configuration of the housing unit 110 and the filter unit 140, and FIG. 9 is a cross-sectional view taken along the line IX-IX shown in FIG. The configuration of the opening and closing part 150 is shown as a cross section.

Referring to FIG. 7 , the ventilation pressure regulating valve device 100 of an internal combustion engine according to another embodiment of the present invention includes a housing 110 , a filter 140 , and an opening/closing part 150 , and the housing part ( 110 ), the filter unit 140 , and the opening/closing unit 150 are supported by the support unit 101 .

Here, the support 101 is exemplified as having a plate shape having a predetermined area as shown in FIG. 7 , but it is of course not limited thereto. A valve flow path 111 and an opening/closing flow path 152 through which the blow-by gas (G) flows are formed through the support unit 101 .

As shown in FIG. 8 , the housing 110 is provided on the valve flow path 111 of the support 101 into which the blow-by gas G generated from the internal combustion engine flows, and the blow-by gas G flows therein and is emitted Here, the housing 110 is a kind of valve body mounted on the separator of the ventilation cover for separating the oil particles from the blow-by gas G, and is supported by the support 101 .

The housing 110 includes first and second housings 120 and 130 that are coupled to each other as in the embodiment. The first housing 120 has a filter unit 140, which will be described later, is inserted therein and is seated, and the second housing 130 covers the filter unit 140 seated on the first housing 120. The first housing ( 120) are combined.

Here, in the first housing 120 and the second housing 130 , first and second passage holes 121 and 131 communicating with the valve passage 111 to allow the blow-by gas G to pass therethrough are respectively provided. will be prepared

On the other hand, a filter guider 126 for guiding the installation position of the filter unit 140 to be described later is provided integrally protruding from the center of the first housing 120 . In addition, a drain passage 127 through which oil particles filtered from the blow-by gas G can be discharged is formed in one side of the first housing 120 .

Since the configuration of the housing part 110 including the first and second housings 120 and 130 is similar to the configuration of the housing part 10 according to the embodiment described above with reference to FIG. 2 , a detailed description will be given below. omit

As shown in FIG. 8 , the filter unit 140 is provided to correspond to the valve flow path 111 of the housing unit 110 to filter oil particles from the blow-by gas (G). It is preferable that at least a portion of the filter unit 140 is formed of a fiber material so that the blow-by gas G introduced into the valve passage 111 can pass therethrough. In the filter unit 140 according to another embodiment, the filter unit 140 is provided to correspond to the space between the first and second housings 120 and 130 , and the filter unit 140 is provided in the first and second housings 120 and 130 . It is inserted so as not to be gapped.

That is, the filter unit 140 according to another embodiment is provided with a diameter and a height so as not to flow in the space between the first and second housings 120 and 130 and is provided with a diameter and a height, so that the filter unit according to an embodiment ( 40) is somewhat different. Except for this, the configuration of the filter unit 140 is similar to that of the embodiment, and thus a detailed description thereof will be omitted.

As shown in FIG. 9 , the opening/closing unit 150 is provided adjacent to the housing unit 110 on the supporting unit 101, and the opening/closing flow path 152 formed through the supporting unit 101 by the differential pressure of the blow-by gas (G). Operate in the direction of opening or closing. One end of the opening and closing unit 150 is supported by the fixing member 151 with respect to the supporting unit 101, and the other end includes a kind of leaf spring provided as a free end with respect to one end. In this case, the opening/closing unit 150 may have an area sufficient to cover the opening/closing flow path 152 provided in the support unit 101 .

Accordingly, the opening/closing unit 150 is elastically deformed in the discharge direction (refer to the arrow) of the blow-by gas G by the differential pressure in the valve flow path 111 to open the opening/closing flow path 152 communicating with the valve flow path 111 . make it Conversely, when the differential pressure in the opening/closing flow path 152 by the blow-by gas G is released, the opening/closing unit 150 may return to the initial position by the elastic restoring force.

The opening/closing part 150 is preferably formed of a flexible thin plate to facilitate elastic deformation. In addition, the opening/closing part 50 may be formed of a metal material that is elastically deformable and is not easily damaged.

As described above, in the ventilation pressure regulating valve device 100 of an internal combustion engine according to another embodiment, the housing part 110 in which the filter part 140 is built-in is installed in the valve flow path 111 of the support part 101, The opening/closing unit 150 is installed in the opening/closing flow path 152 of the support unit 101 . That is, unlike an embodiment in which the filter unit 40 and the opening/closing unit 50 are installed inside the housing unit 10 , in another embodiment, the opening/closing unit 150 is independently provided outside the housing unit 110 . will be.

Due to this configuration, the blow-by gas (G) passes through the housing unit 110 through the valve flow path 111 of the support unit 101 and is discharged, thereby removing the filter unit 140 provided in the housing unit 110 . Oil particles are filtered through. On the other hand, when the differential pressure of the blow-by gas (G) is generated, the blow-by gas (G) cannot be discharged to the valve flow path (111) due to clogging caused by oil particles in the filter unit (140), the adjacent opening/closing flow path (152) ), the blow-by gas (G) presses the opening and closing part 150 provided in the flow direction by the differential pressure.

When the pressing force due to the differential pressure of the blow-by gas (G) is applied with a force greater than the elastic force of the opening/closing unit 150, the opening/closing unit 150 has one end fixed to the fixing member 151 and the other end of the blow-by gas (G) ) is elastically deformed in the flow direction. As a result, the opening/closing flow path 152 is opened by elastic deformation of the opening/closing part 150 , so that the blow-by gas G is discharged through the opening/closing flow path 152 . In this case, the elastic deformation range of the opening and closing part 150 may be regulated by one end fixed to the support part 101 to the fixing member 151 .

When the blow-by gas (G) is exhausted through the open opening/closing flow path 152 and the differential pressure is released, the pressing force due to the differential pressure of the blow-by gas (G) that has been elastically pressurizing the opening/closing unit 150 is released, and the opening/closing unit 150 is closed. It is restored back to its initial position. Accordingly, the opening/closing flow path 152 is again covered by the opening/closing unit 150 to be closed.

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the following claims. You will understand that it can be done.

1, 100: ventilation pressure control valve device of an internal combustion engine
10, 110: housing unit
11, 111: valve flow path
20, 120: first housing
22, 121: Hall 1
23: base
24: support member
26: Installation guide
27, 127: first drain flow path
28: snap protrusion
29: seating part
29a: Installation Guide Home
30, 130: second housing
31, 131: 2nd Euro Hall
34: second drain flow path
35: snap groove
40, 140: filter unit
50, 150: opening and closing part
51: opening and closing guide hole
52: installation protrusion
G: blow-by gas

Claims (21)

a housing part having a valve flow path through which blow-by gas generated from an internal combustion engine passes;
a filter unit provided inside the housing unit to correspond to the valve flow path and filtering the blow-by gas; and
an opening/closing part elastically deformable to selectively exhaust the blow-by gas in association with the differential pressure of the blow-by gas;
includes,
The opening/closing unit is a ventilation pressure control valve device for an internal combustion engine in which a range of elastic deformation due to the differential pressure of the blow-by gas is regulated by a support means in which the opening/closing unit is installed. According to claim 1,
The housing part,
a first housing in which the filter unit is seated and through which a first passage hole communicating with the valve passage is formed; and
a second housing coupled to the first housing with the filter unit interposed therebetween and having a second passage hole that faces the first passage hole and communicates with the valve passage therethrough;
including,
The opening and closing part is provided to support the filter part inside the first and second housings,
When the differential pressure of the blow-by gas is generated, the opening/closing unit is elastically deformed to the extent that it interferes with the second housing while supporting the filter unit. 3. The method of claim 2,
A ventilation pressure regulating valve device for an internal combustion engine in which a filter guider for guiding an installation position of the filter unit is integrally provided in any one of the first and second housings. 4. The method of claim 3,
The filter guider protrudes from any one of the first and second housings toward the other and is insertable to penetrate the filter unit in a thickness direction. 3. The method of claim 2,
The first housing includes a base and a support member protruding from the base toward the second housing so that a support protrusion for supporting the filter part protrudes therein to support the filter part,
The second housing is a ventilation pressure regulating valve device for an internal combustion engine provided in a cap shape to surround the support member. 3. The method of claim 2,
A first drain flow path through which oil particles filtered from the blow-by gas are discharged is provided in the first housing;
A ventilation pressure regulating valve device for an internal combustion engine, wherein the second housing is provided with a second drain passage communicating with the first drain passage to discharge the oil particles. 6. The method of claim 5,
The support member is provided with a seating jaw on which the opening and closing part is seated
At least one installation protrusion protruding from the outer periphery of the opening/closing unit is inserted into the seating jaw, and at least one installation guide groove for preventing rotation of the opening/closing unit is provided. 6. The method of claim 5,
At least one first and second housing ribs interfering to prevent the filter unit from being separated from the first and second passage holes are provided in a radial direction of each of the first and second passage holes,
A ventilation pressure regulating valve device for an internal combustion engine in which the filter guider protrudes from a center where the at least one first housing rib intersects with each other. 3. The method of claim 2,
A ventilation pressure regulating valve of an internal combustion engine having a snap groove provided in one of the first and second housings, and a snap protrusion selectively engaging and fixing the snap groove in the other one of the first and second housings. Device. According to claim 1,
and a support part through which the valve flow path and the open/close flow path communicating with the blow-by gas flow path are adjacent to each other,
A ventilation pressure regulating valve device for an internal combustion engine in which the housing part having the filter part inside is installed in the valve passage, and the opening and closing part is installed in the opening and closing passage. 11. The method of claim 10,
The filter part covers the valve flow path and is closely installed so as not to flow inside the housing part,
The opening/closing part is provided to cover the opening/closing flow path, one end being fixed to the support part, and the other end being provided to be elastically deformable by a pressing force by the differential pressure of the blow-by gas. a first housing in which a first passage hole through which the blow-by gas generated from the internal combustion engine is introduced is provided, and a second housing in which a second passage hole is provided to face the first passage hole and through which the blow-by gas is discharged a housing unit;
a filter unit provided to allow the blow-by gas to pass through the housing unit and filtering the blow-by gas; and
It is provided inside the housing part to support the filter part, and the blow-by gas, which is elastically deformed in association with the differential pressure of the blow-by gas and introduced into the first flow hole, is discharged to the second flow hole without passing through the filter part. an opening and closing unit for guiding it;
includes,
The elastic deformation range of the opening/closing part is a ventilation pressure regulating valve device of an internal combustion engine that can be regulated by the second housing. 13. The method of claim 12,
A ventilation pressure regulating valve device for an internal combustion engine in which a filter guider for guiding an installation position of the filter unit is integrally provided in the first housing to be inserted through the filter unit and the opening/closing unit. 13. The method of claim 12,
The first housing includes a base and a support member protruding from the base toward the second housing so that a support protrusion for supporting the filter part protrudes therein to support the filter part,
The second housing is a ventilation pressure regulating valve device for an internal combustion engine provided in a cap shape to surround the support member. 13. The method of claim 12,
A first drain flow path through which oil particles filtered from the blow-by gas are discharged is provided in the first housing;
A ventilation pressure regulating valve device for an internal combustion engine, wherein the second housing is provided with a second drain passage communicating with the first drain passage to discharge the oil particles. 15. The method of claim 14,
The support member is provided with a seating jaw on which the opening and closing part is seated
At least one installation protrusion protruding from the outer periphery of the opening/closing unit is inserted into the seating jaw, and at least one installation guide groove for preventing rotation of the opening/closing unit is provided. 13. The method of claim 12,
A ventilation pressure regulating valve of an internal combustion engine in which at least one first and second housing ribs interfering to prevent the filter unit from being separated from the first and second passage holes are provided in a radial direction of each of the first and second passage holes. Device. 13. The method of claim 12,
A ventilation pressure regulating valve of an internal combustion engine having a snap groove provided in one of the first and second housings, and a snap protrusion selectively engaging and fixing the snap groove in the other one of the first and second housings. Device. a support part provided with a valve flow path and an opening/closing flow path through which blow-by gas generated from an internal combustion engine passes;
a housing portion provided in the support portion to communicate with the valve passage of the support portion;
a filter unit provided inside the housing unit to correspond to the valve flow path and filtering the blow-by gas; and
an opening/closing unit provided in the support unit to communicate with the opening/closing flow path to selectively exhaust the blow-by gas in association with a differential pressure of the blow-by gas;
Ventilation pressure control valve device of an internal combustion engine comprising a. 20. The method of claim 19,
The filter unit covers the valve passage and is closely installed so as not to flow inside the housing unit. 20. The method of claim 19,
The opening/closing part has an area covering the opening/closing flow path, one end fixed to the support part and the other end provided to be elastically deformable by a pressing force due to the differential pressure of the blow-by gas. pressure regulating valve.

Images