CN110486610A - A kind of lubricating oil pump that can improve degree of regulation - Google Patents
A kind of lubricating oil pump that can improve degree of regulation Download PDFInfo
- Publication number
- CN110486610A CN110486610A CN201910881537.6A CN201910881537A CN110486610A CN 110486610 A CN110486610 A CN 110486610A CN 201910881537 A CN201910881537 A CN 201910881537A CN 110486610 A CN110486610 A CN 110486610A
- Authority
- CN
- China
- Prior art keywords
- valve opening
- oil
- high pressure
- plunger
- regulation
- 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.)
- Granted
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 12
- 239000003921 oil Substances 0.000 claims abstract description 85
- 206010008469 Chest discomfort Diseases 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010705 motor 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
- F16N13/02—Lubricating-pumps with reciprocating piston
- F16N13/06—Actuation of 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
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/02—Lubricating-pumps with reciprocating piston
- F16N13/06—Actuation of lubricating-pumps
- F16N13/10—Actuation of lubricating-pumps with mechanical drive
Abstract
The present invention provides a kind of lubricating oil pump that can improve degree of regulation, including pump case, pump case is equipped with rotor chamber and valve opening, and rotor chamber is divided into low pressure chamber and high pressure chest；Valve opening is adjacent with rotor chamber, the inner end of valve opening is communicated by feedback oil pocket with main oil gallery, plunger, spring and plug screw are sequentially installed in valve opening from inside to outside, the hole wall of valve opening is equipped with a high pressure oil inlet for being connected to high pressure chest and one for being connected to the oil return opening of low pressure chamber, the global shape of plunger is the thick intermediate thin dumbbell shaped in both ends, its inner end is solid cylindrical body, and it is stem between outboard end and inner end that outboard end, which is hollow cylinder,；A transporting room is formed between stem and the valve opening inner wall, transporting room is connected to the high pressure chest always by high pressure oil inlet；The periphery of cylindrical body is equipped with a ring annular groove, and valve opening hole wall position corresponding with annular groove is equipped with an oil leak hole communicated with the outside world.Such a configuration obviates high pressure oils to enter feedback oil pocket.
Description
Technical field
The present invention relates to lubricating system of IC engine technical field, especially a kind of lubricating oil pump for being equipped with regulating valve.
Background technique
As shown in Figure 1, the lubricating oil pump equipped with regulating valve includes driving gear 1 and pump case 2 in the prior art, set on pump case 2
There are rotor chamber and valve opening；The side of rotor chamber is low pressure chamber 3, and the other side is high pressure chest 4；Valve opening is adjacent with rotor chamber, valve opening
Inner end is communicated by feeding back oil pocket 5 with main oil gallery, is sequentially installed with plunger 6, spring 7 and plug screw 8 in valve opening from inside to outside；Valve
The hole wall in hole is equipped with a high pressure oil inlet 9 for being connected to high pressure chest 4 with one for being connected to the oil return opening of low pressure chamber 3
10, the global shape of plunger 6 is goblet shape, and a transporting room 12 is formed between the middle part and valve opening inner wall of plunger 6；High pressure chest
High pressure oil in 4 is entered in transporting room 12 by high pressure oil inlet 9, and is existed between the circumferential surface due to plunger 6 and valve opening inner wall
Certain gap, the high pressure oil in transporting room 12 will be leaked, be entered in feedback oil pocket 5 from gap between the two,
Lead to feed back the oil pressure in oil pocket 5 and is higher than engine main oil gallery oil pressure, so that regulating valve is opened in advance, it thus cannot be accurate
Ground adjusts engine main oil gallery oil pressure, can not meet engine main oil gallery pressure demand.
Such as: the cracking pressure 3bar of design main oil gallery feedback valve, when the oil pressure out of pump reaches 3bar, due to pressure
Loss, main oil gallery pressure can be lower than 3bar, and valve is to close originally at this time, guarantee that oil pump provides enough oil lubricatings and starts
Machine, however pump discharge high pressure oil leaks into feedback oil pocket, so that the oil pressure of feedback oil pocket reaches 3bar, driving plunger is transported to the left
Dynamic, valve opens draining, so that the machine oil that pump is supplied to engine is reduced, causes engine oil to force down, causes engine lubrication not
Good or abrasion.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of lubricating oil pump that can improve degree of regulation, avoid the height of pump discharge
Pressure oil leaks into feedback oil pocket by gap.
In order to solve the above technical problems, the technical scheme is that a kind of lubricating oil pump that can improve degree of regulation, including
Gear and pump case are driven, the pump case is equipped with oil inlet, oil outlet, rotor chamber and valve opening；The rotor chamber corresponds to oil inlet
Side is low pressure chamber, and the side that the rotor chamber corresponds to oil outlet is high pressure chest；The valve opening is adjacent with the rotor chamber, described
The inner end of valve opening is communicated by feedback oil pocket with main oil gallery, be sequentially installed with from inside to outside in the valve opening plunger, spring and
Plug screw, the hole wall of the valve opening is equipped with the high pressure oil inlet that one is used to be connected to high pressure chest and one is used to be connected to low pressure chamber
Oil return opening, the high pressure oil inlet and oil return opening are all provided with position corresponding with the plunger；The whole shape of the plunger
Shape is the thick intermediate thin dumbbell shaped in both ends, and inner end is solid cylindrical body, and outboard end is hollow cylinder, outboard end and
It is stem between inner end；The cavity of the cylinder is for accommodating the spring；The stem and the valve opening inner wall
Between form a transporting room, the transporting room is connected to the high pressure chest always by the high pressure oil inlet；The cylinder
The periphery of body be equipped with a ring annular groove, valve opening hole wall position corresponding with the annular groove be equipped with one communicate with the outside world let out
Oilhole.
In above-mentioned technical proposal, since plunger is designed to the thick intermediate thin dumbbell shaped in both ends, the inner end of plunger is real
The cylindrical body of the heart, the periphery of cylindrical body are equipped with a ring annular groove, valve opening hole wall position corresponding with annular groove be equipped with one with
The oil leak hole that the external world communicates thus can be discharged to the pump housing by annular groove and oil leak hole for the high pressure oil come is leaked through from transporting room
Outside, high pressure oil is avoided to enter feedback oil pocket, it is ensured that the unlatching precision of regulating valve.
Preferably, what the valve opening opened up on pump case is located proximate to the driving gear.It can thus allow from oil leak hole
Lubrication is provided to it on the high-pressure oil flow of discharge to driving gear, to improve the service life of driving gear.
Further, one is additionally provided on the hole wall of the outer one end of the valve opening for being connected to the relief hole of low pressure chamber.This
Sample is just avoided that the spring terminal of valve opening generates high pressure.
Preferably, the width of the annular groove is not less than the work moving distance of plunger.Ensure that plunger in valve in this way
When moving in hole, annular groove is communicated with oil leak hole always.
Detailed description of the invention
Fig. 1 is fuel pump structure schematic diagram in the prior art；
Fig. 2 is the fuel pump structure schematic diagram in the embodiment of the present invention；
Fig. 3 is the switch plunger structure diagram in Fig. 2；
Appended drawing reference are as follows:
1 --- driving gear 2 --- pump case 3 --- low pressure chamber
4 --- high pressure chest 5 --- feedback oil pocket 6 --- plungers
6a --- cylindrical body 6b --- cylinder 6c --- stem
6d --- annular groove 7 --- spring 8 --- plug screw
9 --- high pressure oil inlet 10 --- oil return opening 11 --- relief holes
12 --- transporting room 13 --- oil leak holes.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below 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 " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.In the description of the present invention, the meaning of " plurality " is two or two
More than, unless otherwise specifically defined.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, are also possible to two
Connection inside element, can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill of this field
For personnel, the concrete meaning of the term can be understood as the case may be.
As shown in Figure 2,3, the preferred embodiment of the present invention is: a kind of lubricating oil pump that can improve degree of regulation, including driving
Gear 1 and pump case 2, pump case 2 are equipped with oil inlet, oil outlet, rotor chamber and valve opening, and the position that valve opening opens up on pump case 2 is leaned on
Nearly driving gear 1 and adjacent with rotor chamber；The side that rotor chamber corresponds to oil inlet is low pressure chamber 3, and the side of corresponding oil outlet is
High pressure chest 4；The inner end of valve opening by feed back oil pocket 5 communicated with main oil gallery, be sequentially installed with from inside to outside in valve opening plunger 6,
Spring 7 and plug screw 8, it is low for being connected to one that the hole wall of valve opening is equipped with a high pressure oil inlet 9 for being connected to high pressure chest 4
The oil return opening 10 of chamber 3 is pressed, high pressure oil inlet 9 and oil return opening 10 are all provided with position corresponding with plunger 6, the outer one end of valve opening
Hole wall on be additionally provided with one for being connected to the relief hole 11 of low pressure chamber；The global shape of plunger 6 is thick intermediate thin mute in both ends
Bell-shaped, inner end are solid cylindrical body 6a, and it is rod-shaped between outboard end and inner end that outboard end, which is hollow cylinder 6b,
Portion 6c；The cavity of cylinder 6b is used for putting spring；A transporting room 12, the transfer are formed between stem 6c and valve opening inner wall
Room 12 is connected to high pressure chest 4 always by high pressure oil inlet 9；The periphery of cylindrical body 6a is equipped with a ring annular groove 6d, the annular groove
The width of 6d is not less than the work moving distance of plunger 6, and valve opening hole wall position corresponding with annular groove 6d is equipped with one and outer
The oil leak hole 13 that boundary communicates.
In above-mentioned technical proposal, since plunger 6 is designed to the thick intermediate thin dumbbell shaped in both ends, the inner end of plunger 6 is
The periphery of solid cylindrical body 6a, cylindrical body 6a are equipped with a ring annular groove 6d, valve opening hole wall position corresponding with annular groove 6d
Equipped with an oil leak hole communicated with the outside world 13, the high pressure oil come can will be thus leaked through from transporting room 12 and passes through annular groove 6d
It is discharged to outside the pump housing with oil leak hole 13, and provides lubrication to driving gear 1, so that high pressure oil be avoided to enter feedback oil pocket 5, it is ensured that
The unlatching precision of regulating valve.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way, In
Do not depart from the technical program design under the premise of it is any obviously replace it is within the 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, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the contents of the present invention.
Claims (4)
1. a kind of lubricating oil pump that can improve degree of regulation, including driving gear (1) and pump case (2), the pump case (2) are equipped with oil inlet
Mouth, oil outlet, rotor chamber and valve opening；The side that the rotor chamber corresponds to oil inlet is low pressure chamber (3), and the rotor chamber corresponds to
The side of hydraulic fluid port is high pressure chest (4)；The valve opening is adjacent with the rotor chamber, and the inner end of the valve opening passes through feedback oil pocket
(5) it is communicated with main oil gallery, is sequentially installed with plunger (6), spring (7) and plug screw (8), the valve opening in the valve opening from inside to outside
Hole wall be equipped with a high pressure oil inlet (9) for being connected to high pressure chest (4) and one is used to be connected to the oil returns of low pressure chamber (3)
Mouth (10), the high pressure oil inlet (9) and oil return opening (10) are all provided with position corresponding with the plunger (6), feature
Be: the global shape of the plunger (6) is the thick intermediate thin dumbbell shaped in both ends, and inner end is solid cylindrical body (6a),
Outboard end is hollow cylinder (6b), is between outboard end and inner end stem (6c)；The cavity of the cylinder (6b)
For accommodating the spring (7)；Between the stem (6c) and the valve opening inner wall formed a transporting room (12), it is described in
Turn room (12) to be connected to the high pressure chest (4) always by the high pressure oil inlet (9)；The periphery of the cylindrical body (6a) is equipped with
One ring annular groove (6d), valve opening hole wall position corresponding with the annular groove (6d) are equipped with an oil leak hole communicated with the outside world
(13).
2. the lubricating oil pump according to claim 1 that degree of regulation can be improved, it is characterised in that: the valve opening is in pump case (2)
On open up be located proximate to the driving gear (1).
3. the lubricating oil pump according to claim 1 or 2 that degree of regulation can be improved, it is characterised in that: the valve opening outer one
One is additionally provided on the hole wall at end for being connected to the relief hole (11) of low pressure chamber (3).
4. the lubricating oil pump according to claim 1 or 2 that degree of regulation can be improved, it is characterised in that: the annular groove (6d)
Width be not less than plunger (6) work moving distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910881537.6A CN110486610B (en) | 2019-09-18 | Oil pump capable of improving adjusting precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910881537.6A CN110486610B (en) | 2019-09-18 | Oil pump capable of improving adjusting precision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110486610A true CN110486610A (en) | 2019-11-22 |
| CN110486610B CN110486610B (en) | 2024-05-03 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096938A (en) * | 2020-09-17 | 2020-12-18 | 湖南机油泵股份有限公司 | Oil pump pressure limiting valve capable of reducing plunger eccentric wear |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4029508A1 (en) * | 1989-09-18 | 1991-03-28 | Zahnradfabrik Friedrichshafen | Radial piston lubricating pump for gearing - is incorporated in driving spindle and is operated by eccentric ring as spindle rotates |
| DE202014100737U1 (en) * | 2014-02-19 | 2014-03-20 | Zuisho Precision Industrial Co., Ltd. | Engine oil pump |
| CN203743802U (en) * | 2014-02-24 | 2014-07-30 | 北京汽车动力总成有限公司 | Oil pump assembly |
| CN208331741U (en) * | 2018-06-19 | 2019-01-04 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump equipped with plunger type pressure regulator valve |
| CN109854933A (en) * | 2019-04-08 | 2019-06-07 | 湖南机油泵股份有限公司 | A kind of rotor pump structure of integrated water pump |
| CN109854328A (en) * | 2019-04-08 | 2019-06-07 | 湖南机油泵股份有限公司 | The impeller pump pump housing of low-pressure end is arranged in a kind of feedback oilhole |
| CN210511005U (en) * | 2019-09-18 | 2020-05-12 | 湖南机油泵股份有限公司 | Oil pump capable of improving adjusting precision |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4029508A1 (en) * | 1989-09-18 | 1991-03-28 | Zahnradfabrik Friedrichshafen | Radial piston lubricating pump for gearing - is incorporated in driving spindle and is operated by eccentric ring as spindle rotates |
| DE202014100737U1 (en) * | 2014-02-19 | 2014-03-20 | Zuisho Precision Industrial Co., Ltd. | Engine oil pump |
| CN203743802U (en) * | 2014-02-24 | 2014-07-30 | 北京汽车动力总成有限公司 | Oil pump assembly |
| CN208331741U (en) * | 2018-06-19 | 2019-01-04 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump equipped with plunger type pressure regulator valve |
| CN109854933A (en) * | 2019-04-08 | 2019-06-07 | 湖南机油泵股份有限公司 | A kind of rotor pump structure of integrated water pump |
| CN109854328A (en) * | 2019-04-08 | 2019-06-07 | 湖南机油泵股份有限公司 | The impeller pump pump housing of low-pressure end is arranged in a kind of feedback oilhole |
| CN210511005U (en) * | 2019-09-18 | 2020-05-12 | 湖南机油泵股份有限公司 | Oil pump capable of improving adjusting precision |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096938A (en) * | 2020-09-17 | 2020-12-18 | 湖南机油泵股份有限公司 | Oil pump pressure limiting valve capable of reducing plunger eccentric wear |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| GR01 | Patent grant |