CN103883452B - The oil sucting valve assembly of high voltage common rail pump - Google Patents
The oil sucting valve assembly of high voltage common rail pump Download PDFInfo
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- CN103883452B CN103883452B CN201210562768.9A CN201210562768A CN103883452B CN 103883452 B CN103883452 B CN 103883452B CN 201210562768 A CN201210562768 A CN 201210562768A CN 103883452 B CN103883452 B CN 103883452B
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- oil suction
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Abstract
The invention discloses a kind of oil sucting valve assembly of high-pressure common rail, comprising: the outlet valve seat of honour, it is provided with the cavity for holding seat of honour spool; Fuel-displaced lower valve seat, it is provided with three vertical cores evenly arranged in oil inlet hole, mesopore and ring week, fuel-displaced lower valve seat upper surface and outlet valve seat of honour lower surface bonded to each other; Oil suction valve block, it is triangular structure, this oil suction valve block upper surface be set in seat of honour spool lead on spring abut against, this oil suction valve block lower surface is landed on the described mesopore of fuel-displaced lower valve seat.Three vertical cores of leg-of-mutton valve structure and lower seat adapt, and make oil suction valve block in force feed and oil-absorbing process can keep balance.The present invention adopts the triangular piece valve arrangement of oil sucting valve, instead of lower seat valve core of the prior art, makes the processing of oil sucting valve more simple, efficiently solves the problem of valve wearing and tearing and idling rail pressure shakiness.
Description
Technical field
The present invention relates to high voltage common rail pump oil suction, fuel-displaced technical field, particularly a kind of oil sucting valve assembly of high voltage common rail pump.
Background technique
The oil suction of traditional common rail pump in upright arrangement and fuel-displaced control gear comprise the seat of honour and lower seat, and lower seat valve core controls oil suction, and seat of honour spool controls fuel-displaced.Upper and lower seat valve core all adopts the structure of taper valve core.
Taper oil suction spool utilizes pressure difference and oil sucting valve self structure thus reaches effect of oil suction.Oil sucting valve of the prior art adopts taper valve core under the pretightening force effect of spring, be landed in structure on lower seat mesopore mostly, realizes the function of oil sucting valve.The working principle of oil suction is specially: camshaft rotates to lower dead center process, and plunger is descending, is oil-absorbing process, and oil enters from lower seat oil inlet hole, and oil pressure counter initial tension of spring, backs down oil suction spool (i.e. aforementioned taper valve core), and oil enters from mesopore.Camshaft rotates to top dead center process, and plunger is up, is force feed process, and oil is pressed into from annular groove by lower seat vertical core, and oil suction spool is pushed back original position and forms sealing by oil pressure, and pressure can back down outlet valve seat of honour spool to a certain extent, and oil is forced out.
In high voltage common rail pump, traditional oil sucting valve structure also exists and makes idling rail pressure unstable, and the problems such as valve wearing and tearing, adopt above-mentioned taper valve core structure, manufacturing procedure can be very loaded down with trivial details, and requirement on machining accuracy is higher.
Summary of the invention
The present invention is to overcome defect in above-mentioned prior art, by adopting the triangular piece valve arrangement of oil sucting valve, instead of lower seat valve core of the prior art, making the processing of oil sucting valve more simple, efficiently solves the problem of valve wearing and tearing and idling rail pressure shakiness.
For achieving the above object, the invention provides a kind of oil sucting valve assembly of high-pressure common rail, comprising: the outlet valve seat of honour, it is provided with the cavity for holding seat of honour spool; Fuel-displaced lower valve seat, it is provided with three vertical cores evenly arranged in oil inlet hole, mesopore and ring week, fuel-displaced lower valve seat upper surface and outlet valve seat of honour lower surface bonded to each other; Oil suction valve block, it is triangular structure, this oil suction valve block upper surface be set in seat of honour spool lead on spring abut against, this oil suction valve block lower surface is landed on the described mesopore of fuel-displaced lower valve seat.Three vertical cores of leg-of-mutton valve structure and lower seat adapt, and make oil suction valve block in force feed and oil-absorbing process can keep balance.
In technique scheme, leg-of-mutton oil suction valve block upper face center is provided with the deep gouge for the described spring that leads, and makes to keep stable in valve block running.
In technique scheme, oil suction valve block adopts GCr15A material, and oil suction valve block surface adopts the process of DLC coating.Effectively can ensure crocking resistance and the intensity of oil suction valve block.
In technique scheme, the surface roughness of oil suction valve block is except deep gouge position, and all the other positions are all 1.6, to ensure the accuracy of manufacturing that valve block needs.
In technique scheme, the outlet valve seat of honour and fuel-displaced lower valve seat realize locating by the locating stud being positioned at both sides and fit.
Compared with prior art, the present invention has following beneficial effect:
1, substitute lower seat valve core of the prior art by triangle oil suction valve block of the present invention, both effectively can solve the problem of valve wearing and tearing and idling rail pressure shakiness, can processing cost have been saved again;
2, three the lower seat vertical cores are evenly arranged in the oil suction valve block of triangular structure and ring week adapt, and effectively can ensure the stability of oil suction, force feed process middle valve plate;
3, the deep gouge design of valve block upper surface can form guiding to spring, to increase the stability that valve block runs further;
The index of 4, the selection of valve plate material, the process of cover coat and roughness effectively can ensure the wear-resisting property of valve block, intensity and precision.
Accompanying drawing explanation
Fig. 1 is the sectional view of the oil sucting valve assembly of high-pressure common rail of the present invention;
Fig. 2-1 is the plan view of oil sucting valve assembly oil suction valve block of the present invention;
Fig. 2-2 is that the A-A of Fig. 2-1 is to sectional view;
Fig. 3 is fuel-displaced lower valve seat plan view in the oil sucting valve assembly of high-pressure common rail of the present invention;
Fig. 4 is the assembly schematic diagram of high voltage common rail pump of the present invention.
Mark the following drawings mark thereon by reference to the accompanying drawings:
The 1-outlet valve seat of honour, the fuel-displaced lower valve seat of 2-, 20-oil inlet hole, 21-mesopore, 22-vertical core, seat ring groove under 23-, 3-oil suction valve block, 31-spring groove seat, 4-oil sucting valve spring, 5-locating stud, 61-cam axle top dead center position, 62-camshaft bottom dead center position, 70-plunger cavity, 71-is up to the plunger of peak, and 72-goes downwards to the plunger of minimum point.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
As shown in Figure 1, the oil sucting valve assembly outlet valve seat of honour 1 of high-pressure common rail of the present invention and fuel-displaced lower valve seat 2, upper and lower seat realizes location laminating by locating stud 5.Fuel-displaced lower valve seat 2 is provided with oil inlet hole 20, mesopore 21 and vertical core 22.Oil suction valve block 3 is landed on the mesopore 21 of fuel-displaced lower valve seat 2, and oil sucting valve spring 4 is set in the guiding of seat of honour spool, and lower spring end is landed in (see Fig. 2-2) in the spring groove seat 31 of oil suction valve block 3.
Camshaft rotates to lower dead center process, plunger is descending, it is now oil-absorbing process (see Fig. 4 camshaft bottom dead center position 62 and the plunger 72 going downwards to minimum point), oil enters figure from the oil inlet hole 20 of fuel-displaced lower valve seat 2, the pretightening force of oil pressure counter spring 4, backs down oil suction valve block 3, and oil enters from mesopore 21, descending and flow into plunger cavity 70(see Fig. 1, Fig. 4 from three vertical cores 22 again), complete oil-absorbing process.Because the pressure in plunger cavity 70 in the descending process of plunger can reduce, now on the upside of valve block, oil pressure can be greater than downside oil pressure, and oil suction valve block 3 can be formed sealing by the mouth place pushing back mesopore 21.
Camshaft rotates to top dead center process, plunger is up, it is now force feed process (see Fig. 4 cam axle top dead center position 61 and the plunger 71 being up to peak), oil is pressed into from plunger cavity 70 by lower seat vertical core 22 is up, oil can slowly fill lower seat annular groove 23 instead of formed oil column back down oil suction valve block 3, because oil suction valve block is pushed back original position by oil pressure, it is still sealing state that pressure now on the upside of valve block 3 is still greater than lower side pressure, due to the injection of oil, when pressure can back down outlet valve seat of honour spool to a certain extent, oil is forced out.
Further as shown in Fig. 2-1, Fig. 2-2, oil suction valve block 3 is triangular structure.What adopt due to fuel-displaced lower valve seat is three equally distributed modes of vertical core 22 (see Fig. 3), and when the triangular structure of adding oil suction valve block 3 makes force feed and oil suction, oil suction valve block 3 can keep balance.Oil suction valve block 3 is provided with deep gouge (i.e. spring groove seat 31) on the surface in addition, and spring 4 is pressed in spring groove seat 31 can play guiding, stable effect above.
Oil suction valve block 3 is cores of the present invention, is responsible for oil suction, and sealing, will bear high pressure in the course of the work, and bear repeatedly high-frequency shock.The crocking resistance to material, intensity etc. is needed to consider.For ensureing the durability of oil suction valve block 3, oil suction valve block 3 adopts GCr15A material, and surface adopts the process of DLC coating.Overall employing is quenched and tempering HRC60 ~ 64.Surface roughness all the other positions except deep gouge 6.3 are all 1.6.
Be only a specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (6)
1. an oil sucting valve assembly for high-pressure common rail, is characterized in that, comprising:
The outlet valve seat of honour, it is provided with the cavity for holding seat of honour spool;
Fuel-displaced lower valve seat, it is provided with three vertical cores evenly arranged in oil inlet hole, mesopore and ring week; Fuel-displaced lower valve seat upper surface and described outlet valve seat of honour lower surface bonded to each other;
Oil suction valve block, it is triangular structure, this oil suction valve block upper surface be set in described seat of honour spool lead on spring abut against, this oil suction valve block lower surface is landed on the described mesopore of fuel-displaced lower valve seat.
2. the oil sucting valve assembly of high-pressure common rail according to claim 1, is characterized in that, leg-of-mutton described oil suction valve block upper face center is provided with the deep gouge for the described spring that leads.
3. the oil sucting valve assembly of high-pressure common rail according to claim 1 and 2, is characterized in that, described oil suction valve block adopts GCr15A material.
4. the oil sucting valve assembly of high-pressure common rail according to claim 3, is characterized in that, described oil suction valve block surface adopts the process of DLC coating.
5. the oil sucting valve assembly of high-pressure common rail according to claim 4, is characterized in that, the surface roughness of described oil suction valve block is except deep gouge position, and all the other positions are all 1.6.
6. the oil sucting valve assembly of high-pressure common rail according to claim 1 and 2, is characterized in that, the described outlet valve seat of honour and fuel-displaced lower valve seat realize locating by the locating stud being positioned at both sides and fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562768.9A CN103883452B (en) | 2012-12-21 | 2012-12-21 | The oil sucting valve assembly of high voltage common rail pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562768.9A CN103883452B (en) | 2012-12-21 | 2012-12-21 | The oil sucting valve assembly of high voltage common rail pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103883452A CN103883452A (en) | 2014-06-25 |
| CN103883452B true CN103883452B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210562768.9A Active CN103883452B (en) | 2012-12-21 | 2012-12-21 | The oil sucting valve assembly of high voltage common rail pump |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121890B (en) * | 2016-07-26 | 2017-05-10 | 北京理工大学 | Rail pressure regulating valve for common-rail system |
| CN106948987A (en) * | 2017-05-27 | 2017-07-14 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high voltage common rail pump of inlet valve and the application inlet valve |
| CN107989730A (en) * | 2017-12-28 | 2018-05-04 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high voltage common rail pump and for its into oil outlet valve component |
| CN114962106B (en) * | 2022-05-25 | 2022-12-06 | 安徽腾达汽车科技有限公司 | Valve mechanism and oil pump |
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| DE19848035A1 (en) * | 1998-10-17 | 2000-04-20 | Bosch Gmbh Robert | Radial piston pump for high fuel pressure in IC engines with common-rail injection system has suction valve closure spring supported on pump piston and contained in long piston bore |
| JP4732429B2 (en) * | 2007-12-18 | 2011-07-27 | 愛三工業株式会社 | Pressure regulating valve and fuel supply device |
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|---|---|---|---|---|
| CN2660257Y (en) * | 2003-11-06 | 2004-12-01 | 三角轮胎股份有限公司 | Pulse valve for duster |
| CN201265469Y (en) * | 2008-09-18 | 2009-07-01 | 苏州百胜动力机器有限公司 | Rubber valve oil fuel pump of engine |
| CN102472220A (en) * | 2009-07-08 | 2012-05-23 | 德尔福技术控股有限公司 | A pump unit |
| EP2388470A1 (en) * | 2010-05-17 | 2011-11-23 | Magneti Marelli S.p.A. | Fuel pump for a direct injection system |
| CN102032084A (en) * | 2010-12-29 | 2011-04-27 | 龙口龙泵燃油喷射有限公司 | High-pressure common rail pump for small high-speed diesel engine |
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| CN103883452A (en) | 2014-06-25 |
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Effective date of registration: 20180719 Address after: 300000 2 Yulong Road, automobile industrial park, Wuqing District, Tianjin Patentee after: North oil electronic control fuel injection system (Tianjin) Co., Ltd. Address before: No. 3, courtyard, Cheng Zhuang Road, Fengtai District, Beijing Patentee before: Beijing Yaxin Ketianwei Oil Pume Nozzle Tip Co., Ltd. |
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