CN207420658U - Engine oil pump Multi-stage pressure limiting valve - Google Patents
Engine oil pump Multi-stage pressure limiting valve Download PDFInfo
- Publication number
- CN207420658U CN207420658U CN201721541393.2U CN201721541393U CN207420658U CN 207420658 U CN207420658 U CN 207420658U CN 201721541393 U CN201721541393 U CN 201721541393U CN 207420658 U CN207420658 U CN 207420658U
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- spring
- inner cylinder
- valve body
- level
- pressure
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Engine oil pump Multi-stage pressure limiting valve, including valve body, inner cylinder, level-one spring, two-level spring, spool and pressure regulating screw.Inner cylinder is arranged on valve body front end by level-one spring pressure, and spool is arranged on inner cylinder front end by two-level spring pressure, and level-one spring pressure is arranged between valve body and inner cylinder by pressure regulating screw.Several oil return through-holes are offered at the front end side wall of inner cylinder, the oil return straight slot to match with oil return through-hole position is offered at the front end side wall of valve body.The utility model is carried out corresponding oil extraction release according to lubricating oil pump oil pressure condition and is acted by the different spring classification regulation and control inner cylinder of two rigidity and valve body, is conducive to while pressure limiting valve volume is reduced, is improved valve body pressure regulating performance.
Description
Technical field
The utility model is related to vehicle limit valve technical field more particularly to a kind of engine oil pump Multi-stage pressure limitings
Valve.
Background technology
Existing machine oil pumpage determines by engine thermal idling operation, thus under high speed conditions, lubricating oil pump excess energy
The oil pressure rise that power generates, pressure limiting valve inner spring is jacked up, ball valve with lock or piston structure is solved, machine oil is let out by valve body drain tap
Go out, realize release.Pressure valve spring pretightning force and rigidity determine lubricating oil pump performance, wherein, pretightning force defines that pressure limiting valve is opened
Qi Dian, and rigidity then directly affects engine lubrication system pressure fluctuations amplitude.
Research shows the increase of pressure valve spring rigidity, increases engine oil pressure fluctuating range, shakes so as to cause lubricating oil pump
The problems such as dynamic noise；And spring rate reduces, then requires larger its length, increases pressure limiting valve overall volume, influences sky
Between be laid out.And existing pressure limiting valve uses single spring structure, performance is limited by vehicle space layout.
Utility model content
The utility model provides a kind of engine oil pump Multi-stage pressure limiting valve, to solve above-mentioned prior art deficiency.It is logical
It crosses the different spring classification regulation and control inner cylinder of two rigidity and valve body carries out corresponding oil extraction release according to lubricating oil pump oil pressure condition and acts,
Be conducive to while pressure limiting valve volume is reduced, improve valve body pressure regulating performance.
In order to realize the purpose of this utility model, intend using following technology：
Engine oil pump Multi-stage pressure limiting valve, which is characterized in that including valve body, inner cylinder, level-one spring, two-level spring,
Spool and pressure regulating screw, the inner cylinder are arranged at the in vivo front end of the valve, and the inner cylinder bottom is with being arranged in the valve body
The level-one spring one end connection fix, the pressure regulating screw pass through at the valve rear end inner wall set helicitic texture
Pressure is arranged on the other end of the level-one spring, and the spool is with pressing the two-level spring being arranged in the inner cylinder to be connected fixation；
Several oil return through-holes are offered at the front end side wall of the inner cylinder, offers at the front end side wall of the valve body and leads to the oil return
The oil return straight slot that hole matches.
Further, the rigidity of the level-one spring is more than the rigidity of the two-level spring.
Further, it is arranged with O-ring seal at the outer wall of the inner cylinder front end and at the piston nose outer wall of the spool.
Further, the quantity of the oil return through-hole and the oil return straight slot is 1 ~ 4 group.
The beneficial effects of the utility model are：
The utility model by two rigidity it is different spring classification regulation and control inner cylinder and valve body according to lubricating oil pump oil pressure condition into
The corresponding oil extraction release action of row, is conducive to while pressure limiting valve volume is reduced, improves valve body pressure regulating performance.
Description of the drawings
Fig. 1 shows the utility model structure diagram.
Specific embodiment
As shown in Figure 1, engine oil pump Multi-stage pressure limiting valve, including valve body 1, inner cylinder 2, level-one spring 31, two level bullet
Spring 32, spool 4 and pressure regulating screw 5.The spool 4 is pressed arranged on the inner cylinder 2 using the rigidity smaller two-level spring 32
Front end, then the inner cylinder 2 is pressed arranged on the front end of the valve body 1 by the rigidity larger level-one spring 31.Due to two
32 rigidity of grade spring is less than the level-one spring 31, thus the exceeded pressure of smaller lubricating oil pump is by unlocking the spool 4 and real
Existing oil extraction release, so as to alleviate machine oil pump discharge pressure amplitude of variation, is conducive to stablize engine oil pressure.When the inner cylinder 2
Oil drain quantity can not meet when unloading pressure request, exceeded oil pressure and then compress the level-one spring 31, unlock the inner cylinder 2 to increase
Oil drain quantity unloads pressure request so as to meet.Pass through stiffness difference between the level-one spring 31 and the two-level spring 32, classification regulation and control
The inner cylinder 2 and the valve body 1 carry out corresponding oil extraction release according to lubricating oil pump oil pressure condition and act, and are conducive to reducing pressure limiting
While valve body accumulates, valve body pressure regulating performance is improved.
The pressure regulating screw 5 is arranged on the two-level spring by the helicitic texture pressure set at the 1 rear end inner wall of valve body
32 other end.By adjusting the pressure regulating screw 5 with the preload according to the engine actual conditions change level-one spring 31
Power.
Several oil return through-holes 6 are offered at the front end side wall of the inner cylinder 2, are offered at the front end side wall of the valve body 1
The oil return straight slot 7 to match with 6 position of oil return through-hole.When exceeded oil pressure is smaller, only open the spool 4, machine oil
It is flow at the oil return straight slot 7 and discharged by the oil return through-hole 6；When exceeded oil pressure makes more greatly, the spool 4 and the inner cylinder
2 open, and machine oil has straight slot 7 described in respectively and the oil return through-hole 6 flow to the oil return straight slot 7 and discharges.
The quantity of the oil return through-hole 6 and the oil return straight slot 7 is 1 ~ 4 group.Right quantity is selected according to engine conditions
Oil extraction station, to ensure that machine oil quickly discharges realization release.
O-ring seal 8 is arranged at the 2 front end outer wall of inner cylinder and at the piston nose outer wall of the spool 4.To
It avoids machine oil interior into the valve body 1 and the inner cylinder 2 and influences control accuracy.
Claims (4)
1. engine oil pump Multi-stage pressure limiting valve, which is characterized in that including valve body（1）, inner cylinder（2）, level-one spring（31）, two
Grade spring（32）, spool（4）And pressure regulating screw（5）, the inner cylinder（2）It is arranged at the valve body（1）Interior front end, the inner cylinder
（2）Bottom is with being arranged at the valve body（1）The interior level-one spring（31）One end connection fix, the pressure regulating screw（5）
Pass through the valve body（1）The helicitic texture pressure set at the inner wall of rear end is arranged on the level-one spring（31）The other end, the valve
Core（4）The inner cylinder is arranged on pressure（2）The interior two-level spring（32）Connection is fixed；The inner cylinder（2）Front end side wall at
Offer several oil return through-holes（6）, the valve body（1）Front end side wall at offer and the oil return through-hole（6）Match
Oil return straight slot（7）.
2. engine oil pump according to claim 1 Multi-stage pressure limiting valve, which is characterized in that the level-one spring（31）
Rigidity be more than the two-level spring（32）Rigidity.
3. engine oil pump according to claim 1 Multi-stage pressure limiting valve, which is characterized in that the inner cylinder（2）Front end
At outer wall and the spool（4）Piston nose outer wall at be arranged with O-ring seal（8）.
4. engine oil pump according to claim 1 Multi-stage pressure limiting valve, which is characterized in that the oil return through-hole（6）
With the oil return straight slot（7）Quantity be 1 ~ 4 group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721541393.2U CN207420658U (en) | 2017-11-17 | 2017-11-17 | Engine oil pump Multi-stage pressure limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721541393.2U CN207420658U (en) | 2017-11-17 | 2017-11-17 | Engine oil pump Multi-stage pressure limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420658U true CN207420658U (en) | 2018-05-29 |
Family
ID=62305276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721541393.2U Active CN207420658U (en) | 2017-11-17 | 2017-11-17 | Engine oil pump Multi-stage pressure limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207420658U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074029A (en) * | 2021-04-14 | 2021-07-06 | 浙江尔格科技股份有限公司 | Oil pump pressure reducing valve and oil pump for internal combustion engine using same |
| CN114109611A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | Piston type oil distribution valve assembly with double-spring structure |
| WO2022217491A1 (en) * | 2021-04-14 | 2022-10-20 | 浙江尔格科技股份有限公司 | Pressure reducing valve for engine oil pump, and engine oil pump for internal combustion engine using pressure reducing valve |
-
2017
- 2017-11-17 CN CN201721541393.2U patent/CN207420658U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074029A (en) * | 2021-04-14 | 2021-07-06 | 浙江尔格科技股份有限公司 | Oil pump pressure reducing valve and oil pump for internal combustion engine using same |
| WO2022217491A1 (en) * | 2021-04-14 | 2022-10-20 | 浙江尔格科技股份有限公司 | Pressure reducing valve for engine oil pump, and engine oil pump for internal combustion engine using pressure reducing valve |
| CN114109611A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | Piston type oil distribution valve assembly with double-spring structure |
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