CN103712046A - Oil pump with improved pressure release valve - Google Patents
Oil pump with improved pressure release valve Download PDFInfo
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- CN103712046A CN103712046A CN201310719687.XA CN201310719687A CN103712046A CN 103712046 A CN103712046 A CN 103712046A CN 201310719687 A CN201310719687 A CN 201310719687A CN 103712046 A CN103712046 A CN 103712046A
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- oil pump
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- plunger
- pressure
- oil
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Abstract
Provided is an oil pump with an improved pressure release valve. The pressure release valve comprises a pressure release cavity and a plunger located in the pressure release cavity. When pressure in the oil pump exceeds a preset value, the plunger is matched with the opening state of an oil discharging port of the oil pump. The plunger comprises an oil discharging section and a guide section, wherein the oil discharging section is matched with the oil discharging port, the guide section is matched with a cavity wall of the pressure release cavity, the guide section can perform a guide function during operating, the position of the plunger is guaranteed and abrasion is avoided.
Description
Technical field
The present invention is about the pressure release valve device in a kind of oil pump, particularly oil pump.
Background technique
In motor vehicle engine field, diesel engine field particularly, oil pump plays an important role, and Decompression valves in oil pump has played guarantee and regulating action to the normal work of oil pump.
Oil pump in motor machine provides lubricant oil for this system unit, but the continuous firing of oil pump will there will be the too high phenomenon of oil pressure in system, thereby causes the unnecessary consumption of power of motor.
For this reason, provide Decompression valves, its effect is in order to prevent that lubricating system oil pressure is too high, to cause the power consumpiton of motor, causes the leakage of oil at the place that is tightly connected in oil circuit etc.The oil pressure that Decompression valves has limited lubricating system is set in oil pump, and when oil pump pumps oil pressure when too high, Decompression valves carries out the normal oil pressure that work is adjusted pressure, maintained main oil gallery.
Decompression valves is generally contained in oil pump, so as on test stand, to detect oil pump together with oil pump go out oil pressure and oil pump capacity, also some motor is arranged on main oil gallery or in oil filter by Decompression valves.
Usually, oil pump Decompression valves is divided into plunger type and ball-valve type, because the Decompression valves passing capacity of ball-valve type is poor, pressure fluctuation is large, substantially by plunger type Decompression valves, is replaced.
Along with the development trend of motor miniaturization, the oil pump of motor is also constantly developing towards miniaturization.When the arrangement of Decompression valves is selected vertical oil pump gear, because the reason of spatial constraints, oil pump spring and oil pump plunger all dwindle accordingly.
Because plunger and spring all dwindle accordingly, directly cause the guiding stroke of plunger to dwindle, and flowing of machine oil banking will inevitably cause plunger, thereby can make the friction aggravation between plunger and Decompression valves wall, occur " eccentric wear " phenomenon, in serious situation, spring also there will be wearing and tearing.
Based on this, related domain need to be developed a kind of novel Decompression valves and solve problems.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of oil pump with improving Decompression valves, described Decompression valves comprises pressure-releasing chamber and is arranged in the plunger of described pressure-releasing chamber, described plunger is normally off cooperation with the drain tap being arranged on described pressure-releasing chamber, when the pressure in described oil pump surpasses predetermined value, the drain tap opening state of the relative oil pump of plunger of described Decompression valves coordinates, so that the high pressure oil in described oil pump refluxes and reduces the pressure in described oil pump, wherein: described plunger comprises draining section and guide section, described draining section matches with described drain tap, described guide section matches with the chamber wall of described pressure-releasing chamber.
Alternatively, described draining section and described guide section lay respectively at the two ends of described plunger.
Alternatively, described plunger also comprises the appearance beam hanger section that connects described draining section and described guide section.
Alternatively, described appearance beam hanger section is identical with the main oil gallery of described oil pump.
Alternatively, the diameter of described draining section and described guide section is greater than the diameter of described appearance beam hanger section, so that described plunger is dumbbell shaped.
Alternatively, the diameter of described draining section is greater than described guide section diameter.
Alternatively, described guide section is provided with oil groove in the axial direction.
Alternatively, described oil groove is identical with the main oil gallery of described oil pump.
Alternatively, from the exterior edge face of described draining section, be provided with along the cavity of described plunger axial direction, to hold axle spring.
Alternatively, when described draining section and described drain tap are opening state and coordinate, described guide section matches with the chamber wall of described pressure-releasing chamber.
Therefore in the present invention, owing to having draining section and guide section, when work, guide section can play the effect of guiding, guarantees the position of plunger, the generation of wear prevention.
Accompanying drawing explanation
Fig. 1 is the generalized section of structure of the present invention;
Fig. 2 is the schematic perspective view of plunger in the present invention; With
Fig. 3 is the generalized section of plunger in the present invention.
Reference character: 1 pressure-releasing chamber, 2 plungers, 3 drain taps, 4 draining sections, 5 guide sections, 6 hold beam hanger section, 7 main oil gallerys, 8 oil grooves, 9 cavitys, 10 axle springs.
Embodiment
As shown in Figures 1 to 3, the invention provides a kind of oil pump with improving Decompression valves, described Decompression valves comprises pressure-releasing chamber 1 and is arranged in the plunger 2 of described pressure-releasing chamber, described plunger 2 is normally off cooperation with the drain tap 3 being arranged on described pressure-releasing chamber 1, when the pressure in described oil pump surpasses predetermined value, drain tap 3 opening states of the plunger 2 relative oil pump of described Decompression valves coordinate, so that the high pressure oil in described oil pump refluxes and reduces the pressure in described oil pump, wherein: described plunger 2 comprises draining section 4 and guide section 5, described draining section 4 matches with described drain tap 3, described guide section matches with the chamber wall of described pressure-releasing chamber 1.
Its working procedure is: in normal operation, described draining section and described drain tap 3 match to merge and be normally off, and now described guide section matches with the chamber wall of described pressure-releasing chamber 1; After oil pump internal pressure raises, described draining section 4 is promoted by oil pressure, and is matching and be opening state with described drain tap 3, and high-pressure oil flows out and oil return from described drain tap 3, and now described guide section still matches with the chamber wall of described pressure-releasing chamber 1.
Therefore in whole process, no matter open or closed condition, described Decompression valves all has good guide function, run-off the straight or the deflection of plunger have been prevented, in the time of effective wear prevention, the situations such as leakage of oil have also been prevented, in the present invention, owing to thering is draining section and guide section, therefore when work, guide section can play the effect of guiding, guarantees the position of plunger, the generation of wear prevention.
As preferred version of the present invention, when described draining section 4 and described drain tap are opening state and coordinate, described guide section 5 matches with the chamber wall of described pressure-releasing chamber.
As one embodiment of the present of invention, as shown in Figures 1 to 3, described draining section 4 and described guide section 5 lay respectively at the two ends of described plunger 2.Its leading role can be obvious, prevents the appearance of deflection.
As an improvement, described plunger 2 also comprises the appearance beam hanger section 6 that connects described draining section 4 and described guide section 5.
As shown in the figure, preferred, described appearance beam hanger section 6 is identical with the main oil gallery 7 of described oil pump.
As preferred embodiment, the diameter of described draining section 4 and described guide section 5 is greater than the diameter of described appearance beam hanger section 6, so that described plunger 2 is dumbbell shaped.This shape not only can complete switching function, and guide function, can also avoid the abrasion condition of plunger to occur simultaneously, makes guiding more reliable, prevents leakage of oil.
As further improvement, the diameter of described draining section 4 is greater than described guide section 5 diameters.This structure can help the smooth and easy of valve body opening and closing.
As one embodiment of the present of invention, described guide section is provided with oil groove 8 in the axial direction.It also can help the smooth and easy of valve body open and close.
As a preferred embodiment, described oil groove 8 is identical with the main oil gallery of described oil pump.Described oil groove 8 can be arranged symmetrically with a plurality of.In its function, also can guarantee the smooth and easy of valve body opening and closing.
As another embodiment, from the exterior edge face of described draining section 4, be provided with along the cavity 9 of described plunger 2 axial directions, to hold axle spring 10.It will be appreciated by persons skilled in the art that the predetermined pressure by spring, can guarantee the safety pressure in oil pump.
Should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, should be appreciated that non-limiting embodiments describes as just example.The protection domain of the essence that the application will require is more embodied in the scope that independent claims provide, with and dependent claims.
Claims (10)
1. one kind with the oil pump of improving Decompression valves, described Decompression valves comprises pressure-releasing chamber and is arranged in the plunger of described pressure-releasing chamber, described plunger is normally off cooperation with the drain tap being arranged on described pressure-releasing chamber, when the pressure in described oil pump surpasses predetermined value, the drain tap opening state of the relative oil pump of plunger of described Decompression valves coordinates, so that the high pressure oil in described oil pump refluxes and reduces the pressure in described oil pump, it is characterized in that: described plunger comprises draining section and guide section, described draining section matches with described drain tap, described guide section matches with the chamber wall of described pressure-releasing chamber.
2. oil pump as claimed in claim 1, is characterized in that: described draining section and described guide section lay respectively at the two ends of described plunger.
3. oil pump as claimed in claim 1 or 2, is characterized in that: described plunger also comprises the appearance beam hanger section that connects described draining section and described guide section.
4. oil pump as claimed in claim 3, is characterized in that: described appearance beam hanger section is identical with the main oil gallery of described oil pump.
5. oil pump as claimed in claim 3, is characterized in that: the diameter of described draining section and described guide section is greater than the diameter of described appearance beam hanger section, so that described plunger is dumbbell shaped.
6. oil pump as claimed in claim 3, is characterized in that: the diameter of described draining section is greater than described guide section diameter.
7. oil pump as claimed in claim 3, is characterized in that: described guide section is provided with oil groove in the axial direction.
8. oil pump as claimed in claim 7, is characterized in that: described oil groove is identical with the main oil gallery of described oil pump.
9. oil pump as claimed in claim 3, is characterized in that: from the exterior edge face of described draining section, be provided with along the cavity of described plunger axial direction, to hold axle spring.
10. oil pump as claimed in claim 3, is characterized in that: when described draining section and described drain tap are opening state and coordinate, described guide section matches with the chamber wall of described pressure-releasing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719687.XA CN103712046A (en) | 2013-12-23 | 2013-12-23 | Oil pump with improved pressure release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719687.XA CN103712046A (en) | 2013-12-23 | 2013-12-23 | Oil pump with improved pressure release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103712046A true CN103712046A (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310719687.XA Pending CN103712046A (en) | 2013-12-23 | 2013-12-23 | Oil pump with improved pressure release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103712046A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194317A (en) * | 2015-04-30 | 2016-12-07 | 内蒙古欧意德发动机有限公司 | Pressure limiting valve |
| CN106402629A (en) * | 2016-12-20 | 2017-02-15 | 湖南机油泵股份有限公司 | Anti-blocking high-pressure protection pressure limiting valve and engine oil pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2876513Y (en) * | 2006-01-16 | 2007-03-07 | 张文辉 | Pluger type lubricating pump |
| CN201053562Y (en) * | 2007-01-11 | 2008-04-30 | 赵民章 | Pressure relief type lubricating pump pressure-reliving valve |
| CN102095069A (en) * | 2010-11-13 | 2011-06-15 | 湖南机油泵股份有限公司 | Oil pump with safety regulation integrated valve |
| CN202302660U (en) * | 2011-07-07 | 2012-07-04 | 北京中清能发动机技术有限公司 | Oil pump main body for connecting rod-free reciprocating-rotating motion switching mechanism, oil pump with pump body, internal combustion engine and compressor with oil pump |
| US20120248362A1 (en) * | 2011-03-31 | 2012-10-04 | Magna Powertrain Inc. | Low gain pressure relief valve for a fluid pump |
-
2013
- 2013-12-23 CN CN201310719687.XA patent/CN103712046A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2876513Y (en) * | 2006-01-16 | 2007-03-07 | 张文辉 | Pluger type lubricating pump |
| CN201053562Y (en) * | 2007-01-11 | 2008-04-30 | 赵民章 | Pressure relief type lubricating pump pressure-reliving valve |
| CN102095069A (en) * | 2010-11-13 | 2011-06-15 | 湖南机油泵股份有限公司 | Oil pump with safety regulation integrated valve |
| US20120248362A1 (en) * | 2011-03-31 | 2012-10-04 | Magna Powertrain Inc. | Low gain pressure relief valve for a fluid pump |
| CN202302660U (en) * | 2011-07-07 | 2012-07-04 | 北京中清能发动机技术有限公司 | Oil pump main body for connecting rod-free reciprocating-rotating motion switching mechanism, oil pump with pump body, internal combustion engine and compressor with oil pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194317A (en) * | 2015-04-30 | 2016-12-07 | 内蒙古欧意德发动机有限公司 | Pressure limiting valve |
| CN106402629A (en) * | 2016-12-20 | 2017-02-15 | 湖南机油泵股份有限公司 | Anti-blocking high-pressure protection pressure limiting valve and engine oil pump |
| CN106402629B (en) * | 2016-12-20 | 2019-01-29 | 湖南机油泵股份有限公司 | Anti- clamping stagnation high voltage protective pressure limiting valve and lubricating oil pump |
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| PB01 | Publication | ||
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Application publication date: 20140409 |