CN108386701A - A kind of engine oil pump pressure-limiting valve of pressure limiting valve plunger and anti-clamping stagnation - Google Patents
A kind of engine oil pump pressure-limiting valve of pressure limiting valve plunger and anti-clamping stagnation Download PDFInfo
- Publication number
- CN108386701A CN108386701A CN201810507459.9A CN201810507459A CN108386701A CN 108386701 A CN108386701 A CN 108386701A CN 201810507459 A CN201810507459 A CN 201810507459A CN 108386701 A CN108386701 A CN 108386701A
- Authority
- CN
- China
- Prior art keywords
- plunger
- limiting valve
- pressure
- clamping stagnation
- leading portion
- 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.)
- Pending
Links
- 239000010705 motor oil Substances 0.000 title claims abstract description 18
- 239000003921 oil Substances 0.000 claims abstract description 30
- 239000012535 impurity Substances 0.000 abstract description 7
- 230000001050 lubricating effect Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 6
- 239000010721 machine oil Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/262—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a transverse bore in the valve member
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to lubricating system of IC engine, relate in particular to the engine oil pump pressure-limiting valve of a kind of pressure limiting valve plunger and anti-clamping stagnation.The present invention provides a kind of pressure limiting valve plunger, while providing a kind of engine oil pump pressure-limiting valve of the anti-clamping stagnation using the plunger, impurity can be avoided to accumulate, and reduces the risk of clamping stagnation between plunger and valve opening during moving axially.Pressure limiting valve plunger is that leading portion diameter is small, the big structure of back segment diameter.And the back segment and valve opening cooperation that diameter is big, there are larger gaps with valve opening for the small leading portion of diameter, when pump discharge oil pressure reaches the Opening pressure of design, ram compression spring makes pressure limiting valve directly open, the end face axial of plunger blind end moves a distance, fluid flows to drain tap by the gap between plunger and step surface, and impurity is made to be not easy to accumulate, and reduces the risk of clamping stagnation between plunger and valve opening during moving axially.
Description
Technical field
The present invention relates to lubricating system of IC engine, relate in particular to the lubricating oil pump limit of a kind of pressure limiting valve plunger and anti-clamping stagnation
Pressure valve.
Background technology
Lubricating oil pump is component important in lubricating system, and function is that the machine of enough pressure and flow is provided for lubricating system
Oil, oil pressure must assure that in a certain range, to ensure that each friction member is adequately lubricated and do not damage correlation
Pressure part.
Engine oil pump pressure-limiting valve plays control oil flow rate in lubricating oil pump operational process, adjusts the work of engine oil pressure size
With.And traditional engine oil pump pressure-limiting valve uses the plunger of cylindrical structure, the outer diameter of plunger is consistent, the circumference and valve opening of entire plunger
Coordinate for small―gap suture between inner wall.When lubricating oil pump outlet oil pressure reaches the Opening pressure of design, plunger radial movement compresses bullet
Spring to open position, pressure limiting valve starts draining.
In the actual use process, engine oil pump pressure-limiting valve has the following disadvantages：1, there are sharp edge hairs for plunger circumferential surface
Thorn；2, valve opening residual machining aluminium skimmings；3, contain impurity in machine oil.These situations can make plunger circumferential surface and hole wall card
Stagnant risk, plunger can not be successfully axial movement, cause engine oil pump pressure-limiting valve cannot it is normally-open or close, cause machine oil to pump out
Mouth oil pressure control lag or the ability for reducing plunger oil sealing, the reliability of extreme influence engine lubrication system work.Or even by
It can not be closed in plunger clamping stagnation, pump discharge machine oil is caused all to release, engine sprue is unlubricated and burns to death.
Invention content
The object of the present invention is to provide a kind of pressure limiting valve plungers, while providing a kind of machine oil of the anti-clamping stagnation using the plunger
Pressure limiting valve is pumped, impurity can be avoided to accumulate, reduces the risk of clamping stagnation between plunger and valve opening during moving axially.
To achieve the above object, the present invention is about a kind of technical solution of pressure limiting valve plunger：
A kind of pressure limiting valve plunger, the generally closed cylindrical structure in one end, the cylindrical structure are divided into two sections according to outer diameter difference,
It is wherein leading portion close to blind end, another section is back segment, and the outer diameter of the leading portion is less than the outer diameter of back segment.
Preferably, the end face of the blind end is plane.
Preferably, the end face of the blind end and the junction of cylinder periphery form plunger chamfering.
Preferably, plunger leading portion side wall is equipped with gas vent.
The present invention is about a kind of technical solution of the engine oil pump pressure-limiting valve of anti-clamping stagnation：
A kind of engine oil pump pressure-limiting valve of anti-clamping stagnation, plunger are the closed cylindrical structure in one end, and the cylindrical structure is according to outer diameter difference
It is divided into two sections, wherein being leading portion close to blind end, another section is back segment, and the outer diameter of leading portion is less than the outer diameter of back segment；Oil inlet
Diameter be less than the diameter of valve opening, junction between oil inlet and valve opening forms a cricoid step surface；Plunger back segment with
Coordinate for small―gap suture between valve opening inner wall.
Preferably, the end face of the plunger blind end is plane.
Preferably, the junction of the end face Yu cylinder periphery of the plunger blind end forms plunger chamfering, the step surface
Match with the structure of plunger chamfering.
Preferably, the side wall of the plunger leading portion is equipped with gas vent.
Preferably, the drain tap is positioned close to the position of step surface.
Specifically, pressure limiting valve plunger is that leading portion diameter is small, and the big structure of back segment diameter, the big back segment of diameter is matched with valve opening
Close, thus play guiding role, prevent plunger in valve opening deflection and cause clamping stagnation, and ensure that pressure limiting valve close shape
When state, peripheral part of plunger blind end end face can with step surface is smooth is bonded, keep the oil sealing of pressure limiting valve when closed more reliable.
The outer diameter of plunger leading portion is less than the outer diameter of back segment, thus forms larger gap with valve opening, fine impurities is avoided to accumulate.Moreover,
Since there are larger gaps between plunger leading portion and valve opening inner wall, when lubricating oil pump outlet oil pressure reaches the Opening pressure of design,
Oil pressure only needs promotion plunger, and slightly movement a bit, can be such that oil inlet and drain tap communicates, pressure limiting valve starts to let out in valve opening
Oil, after lubricating oil pump outlet oil pressure restores normal, plunger moves very short distance to step surface under the elastic force effect of spring, just
Pressure limiting valve can be made to close, and the distance that plunger moves axially in valve opening is shorter, the risk for clamping stagnation occur is lower.
Description of the drawings
Fig. 1 is the structural schematic diagram of pressure limiting valve plunger in the embodiment of the present invention 1；
Fig. 2 is the schematic diagram that pressure limiting valve is closed in the embodiment of the present invention 2；
Fig. 3 is the schematic diagram that pressure limiting valve is in open state in the embodiment of the present invention 2；
Fig. 4 is the structural schematic diagram of pressure limiting valve plunger in the embodiment of the present invention 3；
Fig. 5 is the schematic diagram that pressure limiting valve is closed in the embodiment of the present invention 4；
Fig. 6 is the schematic diagram that pressure limiting valve is in open state in the embodiment of the present invention 4；
Reference numeral is：
1 --- plunger 101 --- plunger leading portion 102 --- plunger back segment
2 --- valve opening 3 --- spring 4 --- drain taps
5 --- plunger chamfering 6 --- step surface 7 --- oil inlets
8 --- gas vent 9 --- end face 10 of blind end --- plug screws.
Specific implementation mode
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
In the description of the present invention, it is to be understood that, term "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is that orientation shown in the drawings or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise specified and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be the connection inside two elements, it can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of the term.
Embodiment 1
As shown in Figure 1, a kind of pressure limiting valve plunger, the generally closed cylindrical structure in one end, the cylindrical structure according to outer diameter not
With being divided into two sections, wherein being leading portion 101 close to blind end, another section is back segment 102, and the outer diameter of leading portion 101 is less than back segment 102
Outer diameter；The end face 9 of blind end is plane；101 side wall of plunger leading portion is equipped with gas vent 8.
Embodiment 2
As shown in Figure 1 to Figure 3, a kind of engine oil pump pressure-limiting valve of anti-clamping stagnation, including valve opening 2, plunger 1, oil inlet 7, drain tap 4,
Spring 3, plug screw 10,1 structure of plunger is identical as the piston structure in embodiment 1, and plunger 1 is slided with the cooperation of valve opening 2, after plunger
There is small―gap suture between section 102 and 2 inner wall of valve opening；Valve opening 2 is communicated with oil inlet 7, and the diameter of oil inlet 7 is less than the straight of valve opening 2
Diameter, and the junction between oil inlet 7 and valve opening 2 forms a cricoid step surface 6, and drain tap 4 is arranged close to step
The position in face 6.
Specifically, pressure limiting valve plunger is that 101 diameter of leading portion is small, the big structure of 102 diameter of back segment.And the back segment that diameter is big
102 coordinate with valve opening 2, can play a part of guide section, and can prevent 1 deflection of plunger, ensure plunger 1 and valve opening 2
Oil sealing；And there are larger gaps with valve opening 2 for the small leading portion 101 of diameter, when pump discharge oil pressure reaches the Opening pressure of design,
1 compressed spring 3 of plunger makes pressure limiting valve directly open, and the end face 9 of plunger blind end moves axially a distance, and fluid passes through plunger
Gap between 1 and valve opening 2 flows to drain tap, and impurity is made to be not easy to accumulate, and reduces during moving axially between plunger and valve opening
The risk of clamping stagnation.
Embodiment 3
As shown in figure 4, a kind of pressure limiting valve plunger, is the closed cylindrical structure in one end, which is divided into according to outer diameter difference
Two sections, wherein being leading portion 101 close to blind end, another section is back segment 102, and the outer diameter of the leading portion 101 is less than back segment 102
Outer diameter；The end face 9 of blind end is plane, and the end face 9 of blind end forms plunger chamfering 5 with the junction of cylinder periphery；Before plunger
101 side walls of section are equipped with gas vent 8.
Embodiment 4
As shown in Figures 4 to 6, a kind of engine oil pump pressure-limiting valve of anti-clamping stagnation, including valve opening 2, plunger 1, oil inlet 7, drain tap 4,
Spring 3, plug screw 10,1 structure of plunger is identical as the piston structure of embodiment 1, and valve plunger 1 is slided with the cooperation of valve opening 2, after plunger
There is small―gap suture between section 102 and 2 inner wall of valve opening；Valve opening 2 is communicated with oil inlet 7, and the diameter of oil inlet 7 is less than the straight of valve opening 2
Diameter, the junction between oil inlet 7 and valve opening 2 form a cricoid step surface 6；Step surface 6 and 5 structure phase of plunger chamfering
Match, drain tap 4 is arranged close to the position of step surface 6.
Specifically, pressure limiting valve plunger is that 101 diameter of leading portion is small, the big structure of 102 diameter of back segment.And the back segment that diameter is big
102 coordinate with valve opening 2, can play a part of guide section, and can prevent 1 deflection of plunger, ensure plunger 1 and valve opening 2
Oil sealing；And there are larger gaps with valve opening 2 for the small leading portion 101 of diameter, when pump discharge oil pressure reaches the Opening pressure of design,
1 compressed spring 3 of plunger makes pressure limiting valve directly open, and the end face axial of blind end moves a distance, and fluid passes through plunger chamfering 5
Gap between step surface 6 flows to drain tap, and impurity is made to be not easy to accumulate, and reduces during moving axially between plunger and valve opening
The risk of clamping stagnation.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other manner,
Do not depart from the technical program design under the premise of it is any it is obvious replacement within protection scope of the present invention.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this
Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members
Element, those of ordinary skill in the art should be aware that the element that these are omitted also may make up present disclosure.
Claims (9)
1. a kind of pressure limiting valve plunger, it is characterised in that：The plunger（1）For the closed cylindrical structure in one end, the cylindrical structure root
It is divided into two sections according to outer diameter difference, wherein being leading portion close to blind end（101）, another section is back segment（102）, the leading portion
（101）Outer diameter be less than back segment（102）Outer diameter.
2. a kind of pressure limiting valve plunger according to claim 1, it is characterised in that：The end face of the blind end（9）It is plane.
3. a kind of pressure limiting valve plunger according to claim 2, it is characterised in that：The end face of the blind end（9）With cylinder
The junction of periphery forms chamfering（5）.
4. a kind of pressure limiting valve plunger according to claim 1, it is characterised in that：The plunger leading portion（101）Side wall is equipped with
Gas vent（8）.
5. a kind of engine oil pump pressure-limiting valve of anti-clamping stagnation, including valve opening（2）, plunger（1）, oil inlet（7）, drain tap（4）, spring
（3）, plug screw（10）, it is characterised in that：The plunger（1）For the closed cylindrical structure in one end, the cylindrical structure according to outer diameter not
With being divided into two sections, wherein being leading portion close to blind end（101）, another section is back segment（102）, the leading portion（101）Outer diameter
Less than back segment（102）Outer diameter；The oil inlet（7）Diameter be less than valve opening（2）Diameter, the oil inlet（7）With valve opening
（2）Between junction formed a cricoid step surface（6）；The plunger back segment（102）With valve opening（2）It is small between inner wall
Clearance fit.
6. a kind of engine oil pump pressure-limiting valve of anti-clamping stagnation according to claim 5, it is characterised in that：The plunger（1）Closing
The end face at end（9）It is plane.
7. a kind of engine oil pump pressure-limiting valve of anti-clamping stagnation according to claim 5, it is characterised in that：The plunger（1）Closing
The end face at end（9）Plunger chamfering is formed with the junction of cylinder periphery（5）, the step surface（6）With plunger chamfering（5）Structure
Match.
8. a kind of engine oil pump pressure-limiting valve of anti-clamping stagnation according to claim 5, it is characterised in that：The plunger leading portion
（101）Side wall be equipped with gas vent（8）.
9. a kind of engine oil pump pressure-limiting valve of anti-clamping stagnation according to claim 5, it is characterised in that：The drain tap（4）If
It sets close to step surface（6）Position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507459.9A CN108386701A (en) | 2018-05-24 | 2018-05-24 | A kind of engine oil pump pressure-limiting valve of pressure limiting valve plunger and anti-clamping stagnation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507459.9A CN108386701A (en) | 2018-05-24 | 2018-05-24 | A kind of engine oil pump pressure-limiting valve of pressure limiting valve plunger and anti-clamping stagnation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108386701A true CN108386701A (en) | 2018-08-10 |
Family
ID=63071900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810507459.9A Pending CN108386701A (en) | 2018-05-24 | 2018-05-24 | A kind of engine oil pump pressure-limiting valve of pressure limiting valve plunger and anti-clamping stagnation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108386701A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882582A (en) * | 2019-03-05 | 2019-06-14 | 宁波双驰电子有限公司 | A kind of double clutch gearbox active lubrication valve |
| CN114060703A (en) * | 2021-11-15 | 2022-02-18 | 湖南工学院 | Pressure limiting valve plunger for oil pump of automobile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070068538A (en) * | 2005-12-27 | 2007-07-02 | 두산인프라코어 주식회사 | Pressure control valve |
| CN104879185A (en) * | 2015-06-10 | 2015-09-02 | 安徽江淮汽车股份有限公司 | Anti-stuck pressure relief system for engine lubricating oil |
| CN207049384U (en) * | 2017-08-17 | 2018-02-27 | 湖南机油泵股份有限公司 | Pressure limiting valve |
| CN208331736U (en) * | 2018-05-24 | 2019-01-04 | 湖南机油泵股份有限公司 | A kind of engine oil pump pressure-limiting valve of pressure limiting valve plunger and anti-clamping stagnation |
-
2018
- 2018-05-24 CN CN201810507459.9A patent/CN108386701A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070068538A (en) * | 2005-12-27 | 2007-07-02 | 두산인프라코어 주식회사 | Pressure control valve |
| CN104879185A (en) * | 2015-06-10 | 2015-09-02 | 安徽江淮汽车股份有限公司 | Anti-stuck pressure relief system for engine lubricating oil |
| CN207049384U (en) * | 2017-08-17 | 2018-02-27 | 湖南机油泵股份有限公司 | Pressure limiting valve |
| CN208331736U (en) * | 2018-05-24 | 2019-01-04 | 湖南机油泵股份有限公司 | A kind of engine oil pump pressure-limiting valve of pressure limiting valve plunger and anti-clamping stagnation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882582A (en) * | 2019-03-05 | 2019-06-14 | 宁波双驰电子有限公司 | A kind of double clutch gearbox active lubrication valve |
| CN114060703A (en) * | 2021-11-15 | 2022-02-18 | 湖南工学院 | Pressure limiting valve plunger for oil pump of automobile |
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