CN206555513U - A kind of pressure limiting valve structure of lubricating pump of automobile - Google Patents
A kind of pressure limiting valve structure of lubricating pump of automobile Download PDFInfo
- Publication number
- CN206555513U CN206555513U CN201720282220.7U CN201720282220U CN206555513U CN 206555513 U CN206555513 U CN 206555513U CN 201720282220 U CN201720282220 U CN 201720282220U CN 206555513 U CN206555513 U CN 206555513U
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- China
- Prior art keywords
- pressure limiting
- limiting valve
- column casing
- valve rod
- pressure
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Abstract
A kind of pressure limiting valve structure of lubricating pump of automobile, including the pressure limiting valve column casing being arranged in lubricating oil pump, fuel feed hole, oil outlet and relief hole are sequentially provided with the side face of pressure limiting valve column casing to tail in the past, pressure limiting valve rod is provided with pressure limiting valve column casing, plug screw is provided with the tail end of pressure limiting valve column casing, pressure limiting spring is provided between pressure limiting valve rod and plug screw；Decompression chamber is provided with the front end of pressure limiting valve column casing, the fluid that the cavity wall of decompression chamber is provided with throttling pore, decompression chamber can promote pressure limiting valve post to be axially moved.After the utility model is implemented, it pressure limiting valve rod functional requirement not only met, also efficiently avoid the pressure limiting valve rod frequent movement brought with pressure fluctuation, it is to avoid produce abnormal sound with valve body impact when pressure limiting valve rod resets under spring force.
Description
Technical field
The utility model belongs to lubricating pump of automobile field, especially a kind of pressure limiting valve structure of lubricating pump of automobile.
Background technology
Automobile engine operationally needs to maintain certain engine oil pressure, but be due to the Operation Conditions of engine not
Together, the demand oil mass of machine oil and oil pressure can be different.Especially in the case of engine cold state, due to engine oil viscosity factor and high speed
Lubricating oil pump pumps out that oil level is more rich under operating mode, and oil pressure of lubricating system can exceed its use demand；In order that engine oil pressure is tieed up
Hold in certain limit, generally in lubricating oil pump（Or on lubricating pipe）Pressure limiting valve system can be designed, to limit oil-out pressure mistake
It is high.
Pillar pressure limiting valve is conventional pressure limiting valve design form.Because engine is in the process of running, due to operating mode not
The fluctuation of main oil gallery oil pressure can be caused with change, the action of Open-closure can be repeated in pressure limiting valve, if reaction is excessively sensitive
Engine oil pressure fluctuation can be made frequent, and with housing impact noise is produced during pressure limiting spool return, make its reduced part life.
The content of the invention
The utility model provides a kind of pressure limiting valve structure of lubricating pump of automobile, and solution oil pressure is unstable, noise is big, use the longevity
The problem of ordering short.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of pressure limiting valve knot of lubricating pump of automobile
The past to tail is sequentially provided with fuel feed hole, gone out on structure, including the pressure limiting valve column casing being arranged in lubricating oil pump, the side face of pressure limiting valve column casing
It is provided with oilhole and relief hole, pressure limiting valve column casing in pressure limiting valve rod, the tail end of pressure limiting valve column casing and is provided with plug screw, pressure limiting valve rod and spiral shell
Pressure limiting spring is provided between plug；It is characterized in that：It is provided with the front end of pressure limiting valve column casing in decompression chamber, the cavity wall of decompression chamber
Provided with throttling pore, the fluid in decompression chamber can promote pressure limiting valve post to be axially moved.
It is further to above-mentioned technical proposal to limit, axially extending limited location post on the front end face of the pressure limiting valve rod, limit
Space between position post and pressure limiting valve column casing barrel is decompression chamber.Advantage：It need to only increase on pressure limiting valve rod or process one
Limited post, you can complete to improve the structure of existing pressure limiting valve rod, so that the problem of avoiding the wasting of resources；The pressure limiting of this structure
Valve rod is easy to processing, and production cost is low, is easy to load and unload and safeguards.
It is further to above-mentioned technical proposal to improve, cushion collar is provided with the front end of the limited post.Advantage：Buffer tackling
There is the abnormal sound produced during reduction limited post collision, also there is the effect increased the service life；Therefore, it create a further reduction pressure limiting valve
Abnormal sound, and further increase the whole service life of pressure limiting valve.
Beneficial effect：The hydraulic oil added in the front end of pressure limiting valve rod in decompression chamber, lubricating oil pump high pressure chest passes through section
Flow the throttle effect of aperture, the fluid speed of control turnover decompression chamber, so as to control the velocity of displacement of pressure limiting valve rod；Such as
Oil pressure reduction in high pressure chest, pressure limiting valve rod resets under spring force, and throttling pore controls the fluid in decompression chamber again
The rate of outflow, so as to control the reset speed of pressure limiting valve rod, prevents the impact of pressure limiting valve rod and housing is produced from tapping the sound；Pass through
The design of throttling pore, had both met the pressure release basic function demand of pressure limiting valve, pressure fluctuation is effectively prevented again makes pressure limiting
Its service life is shortened in the frequent displacement of valve rod, improves assembly reliability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that this realizes new use state figure.
Embodiment
As shown in figure 1, a kind of pressure limiting valve structure of lubricating pump of automobile, including the pressure limiting valve column casing 1 being arranged in lubricating oil pump,
Fuel feed hole 101, oil outlet 102 and relief hole 103, pressure limiting valve column casing 1 are sequentially provided with the side face of pressure limiting valve column casing 1 to tail in the past
Interior to be provided with pressure limiting valve rod 2, pressure limiting valve rod 2, to be slidably matched, is provided with plug screw with pressure limiting valve column casing 1 in the tail end of pressure limiting valve column casing 1
3, pressure limiting spring 4 is provided between pressure limiting valve rod 2 and plug screw；Fuel feed hole 101 is corresponding with the annular groove 201 on pressure limiting valve rod, go out
Oilhole 102 is corresponding with the tail end of pressure limiting valve rod 2, relief hole 103 and pressure limiting spring 4 are corresponding；In the front end of pressure limiting valve column casing 1
Have additional decompression chamber 5, i.e. pressure limiting valve rod 2 front end face center be axially outwardly extended with limited post 202, limited post 202 with
Space between pressure limiting valve column casing barrel is decompression chamber 5；Cushion collar is set with the front end of limited post, cushion collar is by rubber material
Matter is made；The cavity wall of decompression chamber is provided with throttling pore 104, and fluid is flowed into decompression chamber and energy by throttling pore 104
Pressure limiting valve post is promoted to be axially moved.
The cushion collar is tubular, and cushion collar is interference fit with pressure limiting valve rod；Those skilled in the art passes through word
Description is fully able to implement, therefore is expressed not in figure.
A diameter of throttling pore of 2 millimeters is added at the front end of pressure limiting valve column casing, its effect is as follows：
1. by throttling pore, hydraulic oil enters pressure limiting valve rod front end decompression chamber, complete to promote pressure limiting valve rod displacement
Function；2. due to the throttling action of aperture, the velocity of displacement of pressure limiting valve rod motion is controlled, pressure jump is prevented；3. due to small
The damping action in hole, when fuel-displaced pressure is reduced, when pressure limiting valve resets under spring force, due to pressure limiting valve can be slowed down
Post reset speed, prevents the impact of pressure limiting valve rod and housing from producing noise；4. after the utility model is implemented, not only meet pressure limiting
Valve rod functional requirement, also efficiently avoid the pressure limiting valve rod frequent movement brought with pressure fluctuation, it is to avoid pressure limiting valve rod
When resetting under spring force abnormal sound is produced with valve body impact.
Operation principle：As shown in Fig. 2 when in lubricating oil pump high-voltage oil cavity 6 oil pressure is too high, machine oil is small by throttling respectively
Hole, fuel feed hole are pressed into the annular groove on decompression chamber and pressure limiting valve rod simultaneously, pressure limiting valve post axial displacement, displacement certain distance
Afterwards, oil outlet is connected by the annular groove on pressure limiting valve rod with fuel feed hole, the oil pressure in high-voltage oil cavity through fuel feed hole, annular groove,
Oil outlet is flowed into low pressure oil pocket 7；During pressure limiting spring-compressed, relief hole discharges the air between pressure limiting valve rod and plug screw；Such as
Shown in Fig. 1, when the oil pressure reduction in high-voltage oil cavity, pressure limiting valve rod is by pressure limiting spring return function, and by the machine in decompression chamber
Oil is pushed back in high-voltage oil cavity.
Do not elaborate part in this specification, is the common knowledge of this area.
Claims (3)
1. a kind of pressure limiting valve structure of lubricating pump of automobile, including the pressure limiting valve column casing being arranged in lubricating oil pump, pressure limiting valve column casing
It is sequentially provided with the past to tail in fuel feed hole, oil outlet and relief hole, pressure limiting valve column casing on side face and is provided with pressure limiting valve rod, pressure limiting valve rod
Plug screw is provided with the tail end of cylinder, pressure limiting spring is provided between pressure limiting valve rod and plug screw；It is characterized in that：The front end of pressure limiting valve column casing
Interior to be provided with decompression chamber, the fluid that the cavity wall of decompression chamber is provided with throttling pore, decompression chamber can promote pressure limiting valve axis of a cylinder
To motion.
2. a kind of pressure limiting valve structure of lubricating pump of automobile according to claim 1, it is characterised in that：Before the pressure limiting valve rod
Axially extending limited location post on end face, the space between limited post and pressure limiting valve column casing barrel is decompression chamber.
3. a kind of pressure limiting valve structure of lubricating pump of automobile according to claim 2, it is characterised in that：The front end of the limited post
Place is provided with cushion collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720282220.7U CN206555513U (en) | 2017-03-22 | 2017-03-22 | A kind of pressure limiting valve structure of lubricating pump of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720282220.7U CN206555513U (en) | 2017-03-22 | 2017-03-22 | A kind of pressure limiting valve structure of lubricating pump of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206555513U true CN206555513U (en) | 2017-10-13 |
Family
ID=60364604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720282220.7U Active CN206555513U (en) | 2017-03-22 | 2017-03-22 | A kind of pressure limiting valve structure of lubricating pump of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206555513U (en) |
-
2017
- 2017-03-22 CN CN201720282220.7U patent/CN206555513U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190517 Address after: No. 36 Fengshen Avenue, Zhangwan Industrial New Area, Shiyan City, Hubei Province, 442000 Patentee after: Dongfeng Fuao Pump Co.,Ltd. Address before: No. 36 Fengshen Avenue, Zhangwan Industrial New Area, Shiyan City, Hubei Province, 442000 Patentee before: DONGFENG MOTOR PUMP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 442000 No.36, Fengshen Avenue, industrial new area, Zhangwan District, Shiyan City, Hubei Province Patentee after: Fuao Pump (Hubei) Co.,Ltd. Address before: 442000 No.36, Fengshen Avenue, industrial new area, Zhangwan District, Shiyan City, Hubei Province Patentee before: Dongfeng Fuao Pump Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |