CN108591495B - Automobile engine PCV valve and combined valve core thereof - Google Patents
Automobile engine PCV valve and combined valve core thereof Download PDFInfo
- Publication number
- CN108591495B CN108591495B CN201810451013.9A CN201810451013A CN108591495B CN 108591495 B CN108591495 B CN 108591495B CN 201810451013 A CN201810451013 A CN 201810451013A CN 108591495 B CN108591495 B CN 108591495B
- Authority
- CN
- China
- Prior art keywords
- valve
- valve core
- combined
- pcv
- valve seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention provides a PCV valve of an automobile engine and a combined valve core thereof. The PCV valve of the automobile engine comprises a first valve body, a thrust spring, a check ring, an O-shaped ring, a combined valve core, a large spring and a second valve body. The invention discloses a combined valve core of a PCV (positive pressure regulator) of an automobile engine, which comprises a valve core head part and a valve seat, wherein the valve core head part is made of metal, the valve seat is made of plastic, and the valve core head part and the valve seat are fixedly connected into a whole. The invention adopts a metal and plastic dual-material combined valve core structure, the head part of the metal valve core plays the advantages of heat treatment and surface treatment of the metal material, and the wear resistance of the combined valve core is improved. The plastic valve seat plays the advantages of plastics in NVH performance, reduces the mass of the combined valve core and slows down the impact inertia of the combined valve core. The head of the metal valve core is formed by machining, and the head of the metal valve core and the plastic valve seat are combined by injection molding in an inverted buckle structure, so that the reliability of the combined valve core is ensured.
Description
Technical Field
The invention relates to the field of automobile engines, in particular to an automobile engine PCV and a combined valve core thereof.
Background
The automobile engine is an important part of an automobile, and the research on the PCV of the automobile engine is particularly important. At present, most of automobile engine PCV valves are plunger type PCV valves, which are generally divided into metal valve core PCV valves and plastic valve core PCV valves according to different valve core materials. A metal valve core PCV valve knocks with an air inlet cavity at a high speed in axial movement, and sharp knocking sound generally exists in idling working conditions or low-speed working conditions to influence NVH performance. In the plastic valve core PCV, the plastic valve core moves axially at a high speed and rotates radially, and the matching part of the head of the valve core and the air outlet cavity is easy to wear, so that the characteristic flow deviation is caused.
Disclosure of Invention
In view of this, the invention provides a combined valve element of a PCV valve of an automobile engine, which includes a valve element head portion and a valve seat, wherein the valve element head portion is made of metal, the valve seat is made of plastic, and the valve element head portion and the valve seat are fixedly connected into a whole.
Further, the valve seat comprises a valve seat connecting portion and a valve seat base, the valve core head is a shell with a hollow interior, the valve seat connecting portion is formed inside the valve core head in an injection molding mode, and the valve seat base is connected with the valve seat connecting portion and is exposed outside the valve core head.
Furthermore, the valve core head is in a bullet head shape, an annular recess is formed in the inner wall of the valve core head, the valve seat base is a solid cylinder, and the diameter of the valve seat base is larger than the maximum diameter of the valve core head.
Further, the material of the valve core head is Q235 steel, the material of the valve seat is a mixture of nylon 66 and glass fiber material, and the mass of the glass fiber material is 35% of the total mass of the nylon 66 and the glass fiber material.
The PCV valve of the automobile engine comprises an air outlet cavity, an air inlet cavity, a retaining ring and a combined valve core, wherein the air outlet cavity and the air inlet cavity are respectively positioned at two opposite ends of the PCV valve, and the retaining ring is sleeved outside the combined valve core and is positioned in the inner cavity together with the combined valve core.
Further, the PCV valve comprises a first valve body and a second valve body, the air outlet cavity is formed inside the first valve body, the air inlet cavity is formed inside the second valve body, the check ring is located between the first valve body and the second valve body, a check ring accommodating groove is formed in the lower surface of the first valve body, and the check ring is located inside the check ring accommodating groove.
Further, the materials of the first valve body and the second valve body are both a mixture of nylon 66 and glass fiber materials, and the mass of the glass fiber materials is 30% of the total mass of the nylon 66 and the glass fiber materials.
Further, the valve further comprises a thrust spring, a large spring and an O-shaped ring, wherein the thrust spring is located in the air outlet cavity, the large spring is located between the retainer ring and the combined valve core, and the O-shaped ring is sleeved on the outer side of the second valve body.
Further, the material of the thrust spring and the material of the large spring are 304 stainless steel, the material of the retainer ring is ST12 cold rolled steel, and the material of the O-shaped ring is fluorosilicone rubber.
The embodiment of the invention has the following beneficial technical effects:
the valve core structure is made of metal and plastic, the head of the metal valve core plays the advantages of heat treatment and surface treatment of the metal material, and the wear resistance of the combined valve core is improved. The plastic valve seat plays the advantages of plastics in NVH performance, reduces the mass of the combined valve core and slows down the impact inertia of the combined valve core.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a PCV valve of an automotive engine provided by the present invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1, the combined valve core of the PCV valve of the automobile engine provided by the invention includes a valve core head 51 and a valve seat 52, wherein the valve core head 51 is fixedly connected with the valve seat 52 into a whole. The valve seat 52 includes a valve seat connecting portion 521 and a valve seat base 522, the valve seat connecting portion 521 is connected with the valve seat base 522 and is exposed outside the valve core head 51, the valve core head 51 is a hollow shell, and the valve seat connecting portion 521 is injection-molded inside the valve core head 51.
The valve core head 51 is bullet-shaped, the inner wall of the valve core head 51 is provided with an annular recess, the valve seat base 522 is a solid cylinder, and the diameter of the valve seat base 522 is larger than the maximum diameter of the valve core head 51. The valve core head 51 and the valve seat 52 are made of different materials, the material of the valve core head 51 is Q235 steel, the material of the valve seat 52 is a mixture of nylon 66 and glass fiber material, and the mass of the glass fiber material is 35% of the total mass of the nylon 66 and the glass fiber material.
The invention provides a PCV (positive pressure coefficient) valve of an automobile engine, which comprises an internal cavity, a check ring 3 and a combined valve core 5, wherein the internal cavity comprises an air outlet cavity and an air inlet cavity, the air outlet cavity and the air inlet cavity are respectively positioned at two opposite ends of the PCV valve, the combined valve core 5 is the combined valve core provided by the invention, and the check ring 3 is sleeved outside the combined valve core 5 and is positioned in the internal cavity together with the combined valve core 5. The PCV valve of the automobile engine comprises a first valve body 1 and a second valve body 7, an air outlet cavity is formed inside the first valve body 1, an air inlet cavity is formed inside the second valve body 7, a check ring 3 is positioned between the first valve body 1 and the second valve body 7, a check ring accommodating groove is formed in the lower surface of the first valve body 1, and the check ring 3 is positioned in the check ring accommodating groove. The first valve body and the second valve body are both made of a mixture of nylon 66 and glass fiber materials, and the mass of the glass fiber materials is 30% of the total mass of the nylon 66 and the glass fiber materials. The upper surface of the retainer ring 3 is in contact with the lower surface of the first valve body 1, and the lower surface of the retainer ring 3 is in contact with the upper surface of the second valve body 7.
The gas outlet cavity comprises an upper inner cavity, a middle inner cavity and a lower inner cavity, the upper inner cavity is of a cylindrical structure, the lower inner cavity is of a cylindrical structure, the diameter of the upper inner cavity is larger than that of the lower inner cavity, the upper end diameter of the middle inner cavity is the same as that of the upper inner cavity, the lower end of the middle inner cavity is the same as that of the lower inner cavity, the middle inner cavity is circular, the diameter of the cross section of the middle inner cavity is gradually reduced from the upper end of the middle inner cavity to the lower end of the middle inner cavity, and the retainer ring 3 is of a circular ring structure. The air inlet cavity is of a cylindrical structure, the diameter of the air inlet cavity is larger than that of the cavity in the lower portion of the air outlet cavity, the outer diameter of the check ring 3 is larger than that of the air inlet cavity, and the inner diameter of the check ring 3 is smaller than that of the cavity in the lower portion of the air outlet cavity.
The PCV valve of the automobile engine further comprises a thrust spring 2, a large spring 6 and an O-shaped ring 4, wherein the thrust spring 2 is positioned in the air outlet cavity, the large spring 6 is positioned between the retainer ring 3 and the combined valve core 5, and the O-shaped ring 4 is sleeved on the outer side of the second valve body 7. The thrust spring 2 and the large spring 6 are both made of 304 stainless steel, the retainer ring 3 is made of ST12 cold-rolled steel, and the O-shaped ring 4 is made of fluorosilicone rubber.
In a specific embodiment of the invention, when the pressure in the air outlet cavity is lower than the pressure in the air inlet cavity, pressure difference occurs at two ends of the combined valve core 5, the combined valve core 5 moves axially towards the air outlet cavity under the pushing of the gas pressure, gas enters the air outlet cavity through a gap between the combined valve core 5 and the metal retainer ring 3 and finally participates in combustion, when the combined valve core 5 pushes the air outlet cavity to the maximum axial stroke, the thrust spring 2 and the large spring 6 play a role in reverse thrust power on the combined valve core, the combined valve core 5 moves axially towards the air inlet cavity, and the combined valve core 5 is pushed to the air inlet, so that the combined valve core 5 completes the axial reciprocating motion in the primary cavity.
The invention confirms the maximum axial stroke of the combined valve core 5 through test verification, ensures that the metal section of the combined valve core is always matched with the metal retainer ring, ensures the durability and the reliability, and simultaneously reduces the mass, reduces the impact kinetic energy and improves the performance through the metal section of the combined valve core 5.
The invention has the beneficial effects that:
1) the valve core structure is made of metal and plastic, the head of the metal valve core plays the advantages of heat treatment and surface treatment of the metal material, and the wear resistance of the combined valve core is improved.
2) The plastic valve seat plays the advantages of plastics in NVH performance, reduces the mass of the combined valve core and slows down the impact inertia of the combined valve core.
3) The metal valve core head is formed by machining, the metal valve core head and the plastic valve seat are combined in an injection molding mode through an inverted buckle structure, and the reliability of the combined valve core is guaranteed.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a combination case of automobile engine PCV valve which characterized in that: the valve core comprises a valve core head and a valve seat, wherein the valve core head is made of metal, the valve seat is made of plastic, the valve core head is fixedly connected with the valve seat into a whole, the valve seat comprises a valve seat connecting part and a valve seat base, the valve core head is a hollow shell, an annular recess is formed in the inner wall of the valve core head, the valve seat connecting part is formed in the valve core head in an injection molding mode, and the valve seat base is connected with the valve seat connecting part and is exposed to the outside of the valve core head.
2. The combination valve cartridge of an automotive engine PCV valve according to claim 1, characterized in that: the valve core head is bullet-shaped, the valve seat base is a solid cylinder, and the diameter of the valve seat base is larger than the maximum diameter of the valve core head.
3. The combination valve cartridge of an automotive engine PCV valve according to claim 1, characterized in that: the material of the valve core head is Q235 steel, and the material of the valve seat is a mixture of nylon 66 and glass fiber material.
4. A PCV valve of an automobile engine, characterized in that: the valve core assembly comprises an air outlet cavity, an air inlet cavity, a retaining ring and a combined valve core, wherein the air outlet cavity and the air inlet cavity are respectively positioned at two opposite ends of the PCV valve, the combined valve core is the combined valve core of any one of claims 1 to 3, and the retaining ring is sleeved outside the combined valve core and is positioned in an inner cavity of the PCV valve together with the combined valve core.
5. The PCV valve for an automobile engine according to claim 4, wherein: the PCV valve comprises a first valve body and a second valve body, wherein an air outlet cavity is formed inside the first valve body, an air inlet cavity is formed inside the second valve body, a check ring is positioned between the first valve body and the second valve body, a check ring accommodating groove is formed in the lower surface of the first valve body, and the check ring is positioned in the check ring accommodating groove.
6. The PCV valve for an automobile engine according to claim 5, wherein: the materials of the first valve body and the second valve body are both a mixture of nylon 66 and glass fiber materials.
7. The PCV valve for an automobile engine according to claim 5, wherein: the valve core assembly further comprises a thrust spring, a large spring and an O-shaped ring, wherein the thrust spring is located in the air outlet cavity, the large spring is located between the retainer ring and the combined valve core, and the O-shaped ring is sleeved on the outer side of the second valve body.
8. The automotive engine PCV valve according to claim 7, wherein: the thrust spring and the large spring are both made of 304 stainless steel, the retainer ring is made of ST12 cold-rolled steel, and the O-shaped ring is made of fluorosilicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810451013.9A CN108591495B (en) | 2018-05-11 | 2018-05-11 | Automobile engine PCV valve and combined valve core thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810451013.9A CN108591495B (en) | 2018-05-11 | 2018-05-11 | Automobile engine PCV valve and combined valve core thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108591495A CN108591495A (en) | 2018-09-28 |
| CN108591495B true CN108591495B (en) | 2020-06-23 |
Family
ID=63637303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810451013.9A Active CN108591495B (en) | 2018-05-11 | 2018-05-11 | Automobile engine PCV valve and combined valve core thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591495B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020180659A (en) * | 2019-04-26 | 2020-11-05 | 日本電産サンキョー株式会社 | Valve element driving device |
| CN114352728A (en) * | 2020-10-12 | 2022-04-15 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
| CN112682519A (en) * | 2020-12-21 | 2021-04-20 | 曲阜天博汽车零部件制造有限公司 | Anti-abrasion PCV valve |
| CN112648395B (en) * | 2020-12-21 | 2022-11-25 | 曲阜天博汽车零部件制造有限公司 | PCV valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205841807U (en) * | 2016-07-22 | 2016-12-28 | 重庆长安汽车股份有限公司 | One is taken a seat buffering Pcv valve |
| CN206054784U (en) * | 2016-08-19 | 2017-03-29 | 重庆吉川燃气设备有限公司 | External screw thread non-return locking ball valve |
| CN107191244A (en) * | 2017-06-30 | 2017-09-22 | 浙江义利汽车零部件有限公司 | A kind of Pcv valve, engine and vehicle |
| CN207316081U (en) * | 2017-10-23 | 2018-05-04 | 浙江义利汽车零部件有限公司 | A kind of Pcv valve |
| CN207316080U (en) * | 2017-10-23 | 2018-05-04 | 浙江义利汽车零部件有限公司 | A kind of engine Pcv valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012246908A (en) * | 2011-05-31 | 2012-12-13 | Aisan Industry Co Ltd | Flow control valve |
| JP5983350B2 (en) * | 2012-11-22 | 2016-08-31 | アイシン精機株式会社 | PCV valve mounting structure |
| JP6640053B2 (en) * | 2016-08-17 | 2020-02-05 | 愛三工業株式会社 | Mounting structure of PCV valve |
-
2018
- 2018-05-11 CN CN201810451013.9A patent/CN108591495B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205841807U (en) * | 2016-07-22 | 2016-12-28 | 重庆长安汽车股份有限公司 | One is taken a seat buffering Pcv valve |
| CN206054784U (en) * | 2016-08-19 | 2017-03-29 | 重庆吉川燃气设备有限公司 | External screw thread non-return locking ball valve |
| CN107191244A (en) * | 2017-06-30 | 2017-09-22 | 浙江义利汽车零部件有限公司 | A kind of Pcv valve, engine and vehicle |
| CN207316081U (en) * | 2017-10-23 | 2018-05-04 | 浙江义利汽车零部件有限公司 | A kind of Pcv valve |
| CN207316080U (en) * | 2017-10-23 | 2018-05-04 | 浙江义利汽车零部件有限公司 | A kind of engine Pcv valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108591495A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108591495B (en) | Automobile engine PCV valve and combined valve core thereof | |
| US7726335B2 (en) | Check valve apparatus for fuel delivery systems | |
| GB2447138A (en) | An injection system for an internal combustion engine | |
| JP2010506090A (en) | Conversion mechanism between reciprocating linear motion and rotational motion | |
| CN106870052B (en) | Variable compression ratio mechanism of engine and valve system matched with variable compression ratio mechanism | |
| US20110100334A1 (en) | Fuel injection system | |
| EP3312395B1 (en) | A gasket for a valve of an internal combustion engine | |
| WO2008010971A3 (en) | Engine reversing and timing control mechanism in a heat regenerative engine | |
| CA2483179A1 (en) | Fuel return valve | |
| CN103998765B (en) | Valve module for injection valve and injection valve | |
| US20170152824A1 (en) | Fuel pump | |
| CN104343531A (en) | Rolling rotor engine | |
| CN112648395B (en) | PCV valve | |
| CN107762702B (en) | Air distributor, diesel engine compressed air starting device and large diesel engine | |
| JPH037571Y2 (en) | ||
| CN221195240U (en) | Oil cavity sealing structure of vehicle filter pump with inner cavity not easy to deform | |
| US20150322908A1 (en) | Fluid valve assembly | |
| CN201358844Y (en) | Engine piston with easy starting lubrication | |
| CN203627153U (en) | Lubricating oil supply device for linear compressor | |
| CN215444190U (en) | PCV valve with anti atmospheric pressure suddenly becomes structure | |
| CN101629515A (en) | Automatically varied crank-link mechanism of four-stroke internal combustion engine | |
| US3495686A (en) | Impulse pump | |
| CN202645702U (en) | Piston cooling nozzle | |
| CN202732285U (en) | Combined valve for air compressor | |
| WO2007053857A1 (en) | A reciprocating internal combustion engine with a cam groove-connecting rod type transmission mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |