CN101435529B - Engine oil pump - Google Patents
Engine oil pump Download PDFInfo
- Publication number
- CN101435529B CN101435529B CN2008102339594A CN200810233959A CN101435529B CN 101435529 B CN101435529 B CN 101435529B CN 2008102339594 A CN2008102339594 A CN 2008102339594A CN 200810233959 A CN200810233959 A CN 200810233959A CN 101435529 B CN101435529 B CN 101435529B
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- China
- Prior art keywords
- oil
- pressure
- oil pump
- plunger
- aperture
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- 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.)
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- 239000010705 motor oil Substances 0.000 title abstract description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 91
- 230000001050 lubricating effect Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 1
- 239000010721 machine oil Substances 0.000 description 9
- 239000000314 lubricant Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Images
Abstract
The invention provides an oil pump which is used on a vehicle, is arranged in a crankcase oil tray, and provides cooling and lubricating for an engine. A pressure limiting valve of the oil pump is provided with an orifice which is communicated with an oil outlet (pressure) cavity and an oil inlet cavity respectively; a valve core in the pressure limiting valve can be on a communicating position or a stop position of the orifice respectively under the action of elasticity. When outlet pressure of the oil pump exceeds a certain range and requires pressure release, engine oil is discharged in an oil cavity on the oil inlet through the pressure limiting valve, as the oil pump is under the liquid level of the crankcase oil tray, the engine oil is prevented from spraying out at high speed from an oil return hole on the pressure limiting valve, and mass air bubbles generated after gas of a crankcase is collided and rubbed can be prevented.
Description
Technical field
The oil pump that the present invention relates to use on the automobile specifically is exactly that device provides cooling and lubricated oil pump to motor etc. in oil sump.
Background technique
Oil pump is most important parts in the lubricating system, and its function is the machine oil that enough pressure and flow are provided for lubricating system, and oil pressure must guarantee in certain scope, obtains lubricating fully and not damaging relevant pressure part to guarantee each friction member.Oil pump has conclusive effect in the exploitation of whole engine lubrication system, the blood circulation system that can liken into whole lubricating system human body, oil pump is exactly the heart of lubrication system, each oil duct branch road is exactly a blood vessel, oil pump provides the circulation of blood continuously for each component in the operation process of motor, guarantee motor normally operation under each operating mode.
In order to satisfy the requirement of Hyundai Motor to the high efficiency of motor, low oil consumption and low emission, a lot of motors have all adopted as new technologies such as variable valve control system, HLA valve mechanisms, and these The Application of Technology all need the stable engine oil pressure of motor.The oil pump pressure-limit valve of motor is when draining at present, and machine oil sprays at a high speed from the spill port on the pressure-limit valve, has produced a large amount of bubbles after the gas collisions of these machine oil and crankcase, the friction.The vibration of motor in addition also can produce bubble to machine oil, because bubble has compressibility, therefore can influence the fluctuation of main oil gallery engine oil pressure.
Moreover, much all be to be connected with the cylinder body main oil gallery at present, not only require the accuracy of manufacturing height, and bad assurance is assembled, the error of manufacturing by high-pressure oil pipe, when especially collision accident took place, these all caused the damage of high-pressure oil pipe or connection part to damage and leakage of oil easily.
Summary of the invention
Purpose of the present invention just provides a kind of oil pump, when the oil pump outlet pressure needs pressure release above certain scope, can guarantee the pressure release oil return, can avoid again simultaneously high-pressure oil by pressure-limit valve spray at a high speed let out in the crankcase and with its in gas collisions, can reduce the machine oil air content effectively.
For achieving the above object, the technical solution used in the present invention is: a kind of oil pump, it is characterized in that: the pressure-limit valve of oil pump is provided with the aperture that is communicated with pressure chamber and oil suction chamber respectively, and the spool in the pressure-limit valve can be in respectively under the elastic force effect above-mentioned aperture is communicated with or the rest position place.
The core of technique scheme is the design of bypass type pressure-limit valve can reduce the machine oil air content effectively between the oil inlet and outlet of oil pump.When the oil pump outlet pressure surpassed certain scope, machine oil leaked into the oil pocket at filler opening place by pressure-limit valve.Because oil pump under the oil sump liquid level, has avoided machine oil to spray at a high speed from the spill port on the pressure-limit valve, avoid producing a large amount of bubbles with gas collisions, the friction back of crankcase.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the worm's eye view of Fig. 1;
Fig. 3 is the A-A sectional view among Fig. 2.
Embodiment
Referring to Fig. 1, during use, this oil pump is installed in the oil sump.
The pressure-limit valve 50 of oil pump 10 is provided with the aperture 51,52 that is communicated with pressure chamber 11 and oil suction chamber 12 respectively, and the plunger 53 in the pressure-limit valve 50 can be in respectively under the elastic force effect above-mentioned aperture 51,52 is communicated with or the rest position place.
Particularly, be exactly described pressure-limit valve 50 plunger bushing 54 oil pump 10 into and out of between the hydraulic fluid port.
Described plunger bushing 54 is the bobbin shape, and an end of plunger bushing 54 holds plunger 53, and the other end is provided with plug screw 55, between plunger 53 and the plug screw 55 spring 56 is set.
The aperture 51 of the end port that holds plunger 53 on the described plunger bushing 54 is connected with the pressure chamber 11 of pressure oil, offers aperture 52 on the tube wall of 54 in described plunger 53 range of movement, and this aperture 52 is connected with oil suction chamber 12.
The outer wall of described plunger 53 is that integral body is column, and front end has the inner valve seat that is provided with of conical surface portion and described valve body 54 front ends to cooperate.Among Fig. 3, plunger 53 is in the inner valve seat that is provided with of plunger bushing 54 front ends and is in contact with one another mated condition, when pressure surpasses certain value, plunger 53 pressure springs 56 move to plug screw 55 ends along plunger bushing 54, when plunger bushing 54 moves to certain position, aperture 52 is connected with oil suction chamber 12, makes oil inlet and outlet communicate like this, and pressure oil leaks into oil suction chamber.
When oil pump is worked, lubricant oil enters oil suction chamber 12 by oil collecting mouth support 20, filter screen 30 through hydraulic fluid port 13, what pump from fuel-displaced pressure chamber 11 is extreme pressure lubricant, and the main oil gallery 40 that links to each other with pressure chamber 11 is in time delivered to machine oil and treated lubricated and the cooling position.
When the oil pressure at pressure chamber 11 places surpassed certain pressure, pressure-limit valve 50 was opened, and the lubricant oil of high pressure just leaks into the low pressure oil pocket at oil suction chamber 12 places.Because this oil pump is contained in the lubricant oil in the oil sump, lubricant oil leaks into the low pressure oil pocket at oil suction chamber 12 places, has reduced the impact to whole oil circuit lubricant oil of the high pressure oil that pressure chamber 11 places of oil pump releases.This high pressure oil does not contact with gas friction, has reduced the generation of bubble widely, has reduced the air content of motor.
Described pressure chamber 11 is communicated with high-pressure oil duct 40, the housing integral casting forming of high-pressure oil duct 40 and oil pump 10, high-pressure oil duct 40 is arranged on the housing of oil pump 10 by forging type, the scheme of having avoided prior art to adopt high-pressure oil pipe to be connected with the cylinder body main oil gallery, effectively reduce manufacturing, requirement that assembly precision is high, occur the situation of leakage when effectively having avoided adopting high-pressure oil pipe to connect easily, make reliability improve greatly.
The hypomere 40a of described high-pressure oil duct 40 is attached to oil pump 10 lower housing portion, its direction is consistent with axially postponing of pressure-limit valve 50, and extend up to the housing upper-end surface of oil pump 10 at the epimere 40b that side-walls depends on, can make things convenient for the main oil gallery with motor to be connected like this, epimere 40b is positioned at the position, corner of oil pump 10 housings, referring to Fig. 2, the hypomere 40a of described high-pressure oil duct 40 from bottom to top, the oblique layout of from-inner-to-outer, see Fig. 1 simultaneously, 3, this is because the binding site of high-pressure oil duct 40 and pressure chamber 11 roughly is positioned at the place that keeps to the side, middle part, oil sump bottom, epimere 40b is arranged in the position, corner of oil pump 10 housings, be in order reasonably to arrange oil duct and don't can to influence the basic structure of oil pump 10, reducing difficulty of processing.
Claims (5)
1. oil pump, it is characterized in that: the pressure-limit valve (50) of oil pump (10) is provided with the aperture (51,52) that is communicated with pressure chamber and oil suction chamber respectively, and the plunger (53) in the pressure-limit valve (50) can be in respectively under the elastic force effect above-mentioned aperture (51,52) are communicated with or the rest position place; Described pressure chamber (11) is communicated with high-pressure oil duct (40), the housing integral casting forming of high-pressure oil duct (40) and oil pump (10); The hypomere (40a) of described high-pressure oil duct (40) is attached to oil pump (10) lower housing portion, and its direction is consistent with axially postponing of pressure-limit valve (50), and extends up to the housing upper-end surface of oil pump (10) at the epimere (40b) that side-walls depends on; The hypomere (40a) of described high-pressure oil duct (40) from bottom to top, the oblique layout of from-inner-to-outer, epimere (40b) is positioned at the position, corner of oil pump (10) housing.
2. oil pump according to claim 1 is characterized in that: the plunger bushing (54) of described pressure-limit valve (50) be positioned at oil pump (10) into and out of between the hydraulic fluid port.
3. oil pump according to claim 2 is characterized in that: described plunger bushing (54) is the bobbin shape, and an end of plunger bushing (54) holds plunger (53), and the other end is provided with plug screw (55), between plunger (53) and the plug screw (55) spring (56) is set.
4. oil pump according to claim 3, it is characterized in that: the aperture (51) of the end port that holds plunger (53) on the described plunger bushing (54) is connected with the pressure chamber (11) of pressure oil, offer aperture (52) on the tube wall of the plunger bushing (54) in described plunger (53) range of movement, this aperture (52) are connected with oil suction chamber (11).
5. oil pump according to claim 4 is characterized in that: the outer wall integral body of described plunger (53) is column, and front end has the inner valve seat that is provided with of conical surface portion and described plunger bushing (54) front end to cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102339594A CN101435529B (en) | 2008-12-17 | 2008-12-17 | Engine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102339594A CN101435529B (en) | 2008-12-17 | 2008-12-17 | Engine oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101435529A CN101435529A (en) | 2009-05-20 |
| CN101435529B true CN101435529B (en) | 2011-07-13 |
Family
ID=40710103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102339594A Active CN101435529B (en) | 2008-12-17 | 2008-12-17 | Engine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101435529B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032015B (en) * | 2009-09-29 | 2012-10-03 | 湖南机油泵股份有限公司 | Oil expelling-preventing safe oil pump |
| CN101858236A (en) * | 2010-04-26 | 2010-10-13 | 隆鑫工业有限公司 | Engine oil pressure limiting structure of general internal-combustion engine |
| CN103016936A (en) * | 2011-09-28 | 2013-04-03 | 上海乾通汽车附件有限公司 | Pressure-limiting valve spring for oil pump assemblies of gasoline engines |
| CN102966407B (en) * | 2012-11-29 | 2015-06-10 | 长城汽车股份有限公司 | Oil pump and engine using same |
| CN104963742A (en) * | 2015-07-29 | 2015-10-07 | 奇瑞汽车股份有限公司 | Lubricating oil circuit of engine cylinder body assembly |
| CN106735056B (en) * | 2015-11-23 | 2018-07-27 | 湖南机油泵股份有限公司 | A kind of Novel oil pump mold |
| CN107956533B (en) * | 2017-12-14 | 2024-04-16 | 潍柴动力股份有限公司 | Engine with flow regulating valve |
| CN110486509A (en) * | 2019-09-16 | 2019-11-22 | 湖南机油泵股份有限公司 | It can prevent the engine oil pump pressure-limiting valve of plunger eccentric wear |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1503051A2 (en) * | 2003-07-30 | 2005-02-02 | Aisin Seiki Kabushiki Kaisha | Oil pump |
| CN200985813Y (en) * | 2006-12-06 | 2007-12-05 | 比亚迪股份有限公司 | Engine oil pressure-limiting oilchannel |
| CN201050390Y (en) * | 2007-04-21 | 2008-04-23 | 潍柴动力股份有限公司 | Integral diesel engine oil pump |
| CN201148888Y (en) * | 2007-12-28 | 2008-11-12 | 奇瑞汽车股份有限公司 | Engine oil pump pressure-limiting valve |
-
2008
- 2008-12-17 CN CN2008102339594A patent/CN101435529B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1503051A2 (en) * | 2003-07-30 | 2005-02-02 | Aisin Seiki Kabushiki Kaisha | Oil pump |
| CN200985813Y (en) * | 2006-12-06 | 2007-12-05 | 比亚迪股份有限公司 | Engine oil pressure-limiting oilchannel |
| CN201050390Y (en) * | 2007-04-21 | 2008-04-23 | 潍柴动力股份有限公司 | Integral diesel engine oil pump |
| CN201148888Y (en) * | 2007-12-28 | 2008-11-12 | 奇瑞汽车股份有限公司 | Engine oil pump pressure-limiting valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101435529A (en) | 2009-05-20 |
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