CN106593730B - A kind of high-pressure common rail variable pump testing pressure-regulating valve - Google Patents
A kind of high-pressure common rail variable pump testing pressure-regulating valve Download PDFInfo
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- CN106593730B CN106593730B CN201611123052.3A CN201611123052A CN106593730B CN 106593730 B CN106593730 B CN 106593730B CN 201611123052 A CN201611123052 A CN 201611123052A CN 106593730 B CN106593730 B CN 106593730B
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- Prior art keywords
- regulating valve
- pressure
- common rail
- variable pump
- adjusting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention provides a kind of high-pressure common rail variable pump testing pressure-regulating valves, including regulating valve fulcrum bearing, compress screw plug, adjust mandril, the regulating valve fulcrum bearing, the compression screw plug, the adjusting mandril is arranged successively from outside to inside, and it is coaxially disposed, the adjusting mandril front end is connected with regulation valve core, the regulation valve core outer wall is connected with valve body is adjusted, the regulating valve valve outer wall and the regulating valve fulcrum bearing clearance fit, rear end is connected with the compression screw plug, the adjusting valve body is connected to fuel inlet fitting by oil input channel, it is connected to delivery connection by oil road.High-pressure common rail variable pump testing pressure-regulating valve of the present invention, adjust the cooperation of valve body and regulation valve core, the fuel flow for flowing through pressure-regulating valve can effectively be controlled, to adjust the charge oil pressure of high-pressure common rail variable pump, be conducive to the precision and accuracy that improve high-pressure common rail variable pump component test.
Description
Technical field
The invention belongs to field of power machinery technology, are adjusted with pressure more particularly, to a kind of high-pressure common rail variable pump testing
Valve.
Background technology
As diesel technology continues to develop, emission regulation demands are increasingly stringenter, the height as diesel technology core
Common rail liquid fuel technology is pressed, has obtained abundant development, application is more and more extensive.High-pressure common rail variable pump is the weight of high pressure co-rail system
It is the important means for carrying out high-pressure common rail variable pump technical research to want component part, high-pressure common rail variable pump testing.
The operation principle of the pressure-regulating valve of high-pressure common rail variable pump testing is：By adjusting the circulation of pressure-regulating valve
Section flows through the fuel flow of regulating valve to control, to adjust the charge oil pressure (fuel rail pressure) of high-pressure common rail variable pump.
It high-pressure common rail variable pump testing application as shown in Figure 1, experiment when, variable pump compresses low-voltage fuel to form high pressure fuel
It is delivered in fuel rail, by experimental control device fixed variable pump-metered valve duty ratio, is adjusted at this time by pressure-regulating valve
The fuel flow flowed out from fuel rail can control the pressure in fuel rail, and it is special can to carry out the circulation of high-pressure common rail variable pump
Property experiment.
Invention content
In view of this, the present invention is directed to propose a kind of high-pressure common rail variable pump testing pressure-regulating valve, to provide one kind
Control accuracy height, good airproof performance, simple in structure, easy to operate high-pressure common rail variable pump testing pressure-regulating valve.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of high-pressure common rail variable pump testing pressure-regulating valve, including regulating valve fulcrum bearing, adjusting valve body, regulating valve
Spool compresses screw plug, adjusts mandril, delivery connection and fuel inlet fitting, the regulating valve fulcrum bearing, the compression screw plug, described
It adjusting mandril to be socketed successively from outside to inside, and is coaxially disposed, the adjusting mandril front end is connected with the regulation valve core,
The regulation valve core outer wall is connected with the adjusting valve body, the regulating valve valve outer wall and the adjusting valve-supporting
The inner cavity clearance fit of seat, the regulating valve valve rear end are connected with the compression screw plug,
The regulating valve fulcrum bearing is equipped with oil input channel and oil road, the oil input channel and oil road respectively with the adjusting
The excessively oily channel of the No.1 being arranged on valve body, No. two channels Guo You connections, the adjusting valve body is interior to be equipped with No. three channels Guo You,
No. three channels Guo You and the excessively oily channel of the No.1 are arranged on same sagittal plane and adjust corresponding on valve body adjust
The position of valve core front end is saved, and oil input channel oil inlet is controlled by regulation valve core；The outer end of the oil input channel and oil road point
It is not connected to the fuel inlet fitting and delivery connection installed in the regulating valve fulcrum bearing.
Further, several mounting holes are set outside the regulating valve fulcrum bearing.
Further, the regulating valve fulcrum bearing includes drainback passage, and the both ends of the drainback passage are respectively connected to institute
State inner cavity and the oil road.
Further, the outer wall for adjusting valve body is equipped with annular groove, and No. three channels Guo You, the No.1 are excessively oily
Intersect with the annular groove end in channel.
Further, the front end for adjusting valve body is equipped with sealing structure.
Further, the end of the regulation valve core is pyramidal structure, and cone angle is 15 °.
Further, the regulation valve core uses the processing method of bedding-in, fit clearance with the adjusting valve body
For 0.003mm.
Further, the screw plug that compresses is the intermediate column structure for being equipped with through-hole, and radially setting connects the compression screw plug
Through-hole, the intercommunicating pore intersect with the through-hole, and the annular inner wall of the through-hole is equipped with No.1 seal groove, the compression spiral shell
Stifled outer wall is equipped with No. two seal grooves, and No. two seal grooves and the No.1 seal groove install No. two sealings respectively
Circle and No.1 sealing ring, the outer wall of the No.1 sealing ring and the adjustings mandril seal, the outer wall of No. two sealing rings and
The inner wall sealing of the inner cavity.
Further, the front end for adjusting mandril is hemispherical dome structure.
Further, rotational handle is installed in the tail portion for adjusting mandril.
Compared with the existing technology, high-pressure common rail variable pump testing of the present invention pressure-regulating valve has following excellent
Gesture：
(1) high-pressure common rail variable pump testing pressure-regulating valve of the present invention adjusts valve body and regulation valve core
Cooperation, can effectively control the fuel flow for flowing through pressure-regulating valve, to adjust the charge oil pressure of high-pressure common rail variable pump,
Be conducive to improve the precision and accuracy of high-pressure common rail variable pump component test.
(2) high-pressure common rail variable pump testing pressure-regulating valve of the present invention adjusts the front end of valve body equipped with close
Seal structure is conducive to adjust valve body and the realization high pressure sealing of regulating valve fulcrum bearing.
(3) high-pressure common rail variable pump testing pressure-regulating valve of the present invention, the front end for adjusting mandril are hemispherical
Structure makes it, always perpendicular to contact surface, ensure that the movement of regulation valve core is smooth to the thrust of regulation valve core.
(4) high-pressure common rail variable pump testing pressure-regulating valve of the present invention, if setting outside regulating valve fulcrum bearing
Dry mounting hole facilitates regulating valve fulcrum bearing to be fixedly mounted on testing stand.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the high-pressure common rail variable pump component test schematic diagram described in background of invention；
Fig. 2 is the high-pressure common rail variable pump testing pressure-regulating valve structural schematic diagram described in the embodiment of the present invention；
Fig. 3 is the schematic diagram of the regulating valve fulcrum bearing sectional view described in the embodiment of the present invention；
Fig. 4 is the schematic diagram of the regulating valve body fuel flow direction described in the embodiment of the present invention；
Fig. 5 is the schematic diagram of the adjusting valve body sectional view described in the embodiment of the present invention；
Fig. 6 is the schematic diagram of the compression screw plug sectional view described in the embodiment of the present invention；
Fig. 7 is the structural schematic diagram of the adjusting mandril described in the embodiment of the present invention；
Reference sign：
1- regulating valve fulcrum bearings；11- oil input channels；12- oil roads；The inner cavities 13-；14- mounting holes；15- drainback passages；2- tune
Save valve body；The excessively oily channel of 21- No.1s；No. bis- channels Guo You 22-；No. tri- channels Guo You 23-；24- annular grooves；25- sealing knots
Structure；26- fuel oils flow to；3- regulation valve cores；4- compresses screw plug；41- through-holes；42- intercommunicating pores；43- No.1 seal grooves；44-
No. two seal grooves；5- adjusts mandril；6- rotational handles；No. bis- sealing rings of 7-；8- No.1 sealing rings；9- delivery connections；10- into
Oily connector；111- testing stands；112- safety valves；113- fuel rails；114- rail pressure sensors；115- high-pressure oil pipes；116- pressure
Regulating valve；117- buffer containers；118- flow sensors；119- fuel tanks；120- variable pumps.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To express or implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of high-pressure common rail variable pump testing pressure-regulating valve, as shown in Figures 2 to 7, including regulating valve fulcrum bearing 1,
Valve body 2, regulation valve core 3 are adjusted, screw plug 4 is compressed, adjusts mandril 5, delivery connection 9 and fuel inlet fitting 10, the regulating valve
Fulcrum bearing 1, the compression screw plug 4, the adjusting mandril 5 are socketed successively from outside to inside, and are coaxially disposed, the adjusting mandril 5
Front end is connected with the regulation valve core 3, and 3 outer wall of the regulation valve core is connected with the adjusting valve body 2, institute
State 13 clearance fit of inner cavity for adjusting 2 outer wall of valve body and the regulating valve fulcrum bearing 1,2 rear end of adjusting valve body and institute
It states and compresses the contact connectio of screw plug 4,
The regulating valve fulcrum bearing 1 is equipped with oil input channel 11 and oil road 12, and the oil input channel 11 and oil road 12 are distinguished
It is connected to No.1 oily channel 21, two channels Guo You 22 excessively being arranged on the adjusting valve body 2, in the adjusting valve body 2
Equipped with No. three channels Guo You 23, the excessively oily channel 21 of No. three channels Guo You 23 and the No.1 is on same sagittal plane, and
Be arranged on adjusting valve body 2 and correspond to the position of 3 front end of regulation valve core, and by the control oil input channel 11 of regulation valve core 3 into
Oil；The outer end of the oil input channel 11 and oil road 12 is respectively communicated with the fuel inlet fitting installed in the regulating valve fulcrum bearing 1
10 and delivery connection 9.
Several mounting holes 14 are arranged in 1 outside of the regulating valve fulcrum bearing, and the regulating valve fulcrum bearing 1 is facilitated to be fixedly mounted on
On testing stand.
The regulating valve fulcrum bearing 1 includes drainback passage 15, and the both ends of the drainback passage 15 are respectively connected in described
Chamber 13 and the oil road 12 flow out convenient for the fuel oil of 13 internal leakage of the inner cavity.
The outer wall for adjusting valve body 2 is equipped with annular groove 24, the excessively oily channel of No. three channels Guo You 23, the No.1
21 end is intersected with the annular groove 24, and fuel oil is facilitated to flow out.
The front end for adjusting valve body 2 is equipped with sealing structure 25, is conducive to the adjusting valve body 2 and the regulating valve
Fulcrum bearing 1 realizes high pressure sealing.
The end of the regulation valve core 3 is pyramidal structure, and cone angle is 15 °, reaches what the regulation valve core 3 lifted
The best match of height and fuel flow.
With the adjusting valve body 2 using the processing method of bedding-in, fit clearance is the regulation valve core 3
0.003mm。
The screw plug 4 that compresses is the intermediate column structure for being equipped with through-hole 41, the radial setting intercommunicating pore of the compression screw plug 4
42, the intercommunicating pore 42 intersects with the through-hole 41, is flowed out convenient for internal leakage fuel oil；It is set on the annular inner wall of the through-hole 41
There are No.1 seal groove 43, the outer wall for compressing screw plug 4 to be equipped with No. two seal grooves 44,44 He of No. two seal grooves
The No.1 seal groove 43 installs No. two sealing rings 7 and No.1 sealing ring 8, the outer wall of the No.1 sealing ring 8 and institute respectively
It states and adjusts the sealing of mandril 5, the inner wall sealing of the outer wall and the inner cavity 13 of No. two sealing rings 7 prevents fuel leakage outside
Portion.
The front end for adjusting mandril 5 is hemispherical dome structure, make its to the thrust of the regulation valve core 3 always perpendicular to
Contact surface ensure that the movement of the regulation valve core 3 is smooth.
Rotational handle 6 is installed in the tail portion for adjusting mandril 5, and staff is facilitated to operate and dismount.
5 outside of the adjusting mandril is threadedly coupled with the compression screw plug 4, and the screw thread is M12x1, facilitates the adjusting
The adjusting of mandril 5.
A kind of operation principle of high-pressure common rail variable pump testing pressure-regulating valve is：
When fuel oil enters along high-pressure oil pipe from fuel inlet fitting 10, reaches and adjust by oil input channel 11 and No. two channels Guo You 22
The front end of valve core 3, under the action of fuel pressure, 3 front end of regulation valve core is lifted, and rear end presses against the head for adjusting mandril 5
It is set to move backward, fuel oil leads to through No.1 oil excessively respectively from gap outflow of the valve body 2 with 3 mating surface of regulation valve core is adjusted
Road 21 and No. three channels Guo You 23, wherein being flowed out along delivery connection 9 through oil road 12 by the fuel oil in No.1 oil channel 21 excessively；Through
The fuel oil in No. three channels Guo You 23 passes through drainback passage 15,12 and of oil road successively after annular groove 24 is pooled in inner cavity 13
Delivery connection 9 flows out；When there is part fuel oil to enter the through-hole 41 for compressing 4 centre of screw plug, fuel oil can be flowed into along intercommunicating pore 42
In inner cavity 13, and finally flowed out along delivery connection 9.
Since 13 inside of inner cavity is sealing structure, when fuel pressure change is small, under pressure, 3 He of regulation valve core
Origin-location can be returned to by compressing screw plug 4；The No.1 seal groove 43 and No.1 sealing ring 8 that 41 annular inner wall of through-hole is equipped with are close
Envelope compresses No. two seal grooves 44 and No. two that 4 outer wall of screw plug is equipped with for preventing the fuel leakage in through-hole 41 to outside
Sealing ring 7 seals, and prevents fuel leakage in inner cavity 13 to external.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (9)
1. a kind of high-pressure common rail variable pump testing pressure-regulating valve, it is characterised in that：Including regulating valve fulcrum bearing (1), adjust
Valve body (2), regulation valve core (3) compress screw plug (4), adjust mandril (5), delivery connection (9) and fuel inlet fitting (10),
The regulating valve fulcrum bearing (1), the compression screw plug (4), the adjusting mandril (5) are socketed successively from outside to inside, and same
Axis is arranged, and the adjustings mandril (5) front end and the regulation valve core (3) connect, regulation valve core (3) outer wall and
The adjusting valve body (2) is connected, the inner cavity for adjusting valve body (2) outer wall and the regulating valve fulcrum bearing (1)
(13) clearance fit, the adjusting valve body (2) rear end are connected with the compression screw plug (4),
The regulating valve fulcrum bearing (1) is equipped with oil input channel (11) and oil road (12), the oil input channel (11) and oil road
(12) it is connected to respectively with the excessively oily channel (21) of No. two channels Guo You (22), No.1s being arranged on the adjusting valve body (2),
No. three channels Guo You (23), No. three channels Guo You (23) and the No.1 mistake are equipped in the adjusting valve body (2)
Oily channel (21) is arranged at the position for adjusting and corresponding to regulation valve core (3) front end on valve body (2) on same sagittal plane
It sets, and oil input channel (11) oil inlet is controlled by regulation valve core (3)；Distinguish the outer end of the oil input channel (11) and oil road (12)
It is connected to the fuel inlet fitting (10) installed on the regulating valve fulcrum bearing (1) and delivery connection (9),
The screw plug (4) that compresses is the intermediate column structure for being equipped with through-hole (41), compression screw plug (4) the radial direction setting intercommunicating pore
(42), the intercommunicating pore (42) is intersected with the through-hole (41), and the annular inner wall of the through-hole (41) is equipped with No.1 sealing ring
Slot (43), the outer wall for compressing screw plug (4) are equipped with No. two seal grooves (44), No. two seal grooves (44) and described
No.1 seal groove (43) installs No. two sealing rings (7) and No.1 sealing ring (8), the outer wall of the No.1 sealing ring (8) respectively
It is sealed with the adjusting mandril (5), the inner wall sealing of the outer wall and the inner cavity (13) of No. two sealing rings (7).
2. a kind of high-pressure common rail variable pump testing pressure-regulating valve according to claim 1, it is characterised in that：The tune
It saves and several mounting holes (14) is set outside valve-supporting seat (1).
3. a kind of high-pressure common rail variable pump testing pressure-regulating valve according to claim 1, it is characterised in that：The tune
It includes drainback passage (15) to save valve-supporting seat (1), the both ends of the drainback passage (15) be respectively connected to the inner cavity (13) and
The oil road (12).
4. a kind of high-pressure common rail variable pump testing pressure-regulating valve according to claim 1, it is characterised in that：The tune
The outer wall for saving valve body (2) is equipped with annular groove (24), the end of the excessively oily channel (21) of No. three channels Guo You (23), the No.1
Intersect with the annular groove (24) in portion.
5. a kind of high-pressure common rail variable pump testing pressure-regulating valve according to claim 1, it is characterised in that：The tune
The front end for saving valve body (2) is equipped with sealing structure (25).
6. a kind of high-pressure common rail variable pump testing pressure-regulating valve according to claim 1, it is characterised in that：The tune
The end for saving valve core (3) is pyramidal structure, and cone angle is 15 °.
7. a kind of high-pressure common rail variable pump testing pressure-regulating valve according to claim 1, it is characterised in that：The tune
Save the processing method that valve core (3) uses bedding-in with the adjusting valve body (2), fit clearance 0.003mm.
8. a kind of high-pressure common rail variable pump testing pressure-regulating valve according to claim 1, it is characterised in that：The tune
The front end for saving mandril (5) is hemispherical dome structure.
9. a kind of high-pressure common rail variable pump testing pressure-regulating valve according to claim 1, it is characterised in that：The tune
Save the tail portion installation rotational handle (6) of mandril (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123052.3A CN106593730B (en) | 2016-12-08 | 2016-12-08 | A kind of high-pressure common rail variable pump testing pressure-regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123052.3A CN106593730B (en) | 2016-12-08 | 2016-12-08 | A kind of high-pressure common rail variable pump testing pressure-regulating valve |
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| Publication Number | Publication Date |
|---|---|
| CN106593730A CN106593730A (en) | 2017-04-26 |
| CN106593730B true CN106593730B (en) | 2018-08-07 |
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ID=58598661
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611123052.3A Active CN106593730B (en) | 2016-12-08 | 2016-12-08 | A kind of high-pressure common rail variable pump testing pressure-regulating valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195572A (en) * | 2017-12-08 | 2018-06-22 | 中国北方发动机研究所(天津) | A kind of high-pressure common rail variable pump check valve Flow characteristic test test device |
| DE102019131537B4 (en) * | 2019-11-21 | 2022-01-27 | Kendrion (Villingen) Gmbh | Device for pressure regulation in a fuel supply of an internal combustion engine with a common rail injection |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886643A (en) * | 2010-07-23 | 2010-11-17 | 吴旭 | Control valve special for hydraulic lifting of plunger cylinder |
| CN103758670A (en) * | 2013-12-12 | 2014-04-30 | 中国北方发动机研究所(天津) | High-flow inlet metering valve for high-pressure common-rail variable displacement pump |
| CN103850999A (en) * | 2012-11-29 | 2014-06-11 | 中国船舶重工集团公司第七一一研究所 | Oil pump oil inlet quantity adjusting control valve used for high pressure common rail system |
| CN204239117U (en) * | 2014-11-25 | 2015-04-01 | 中国船舶重工集团公司第七一一研究所 | A kind of relief valve being applicable to heavy oil common rail system |
| CN105443816A (en) * | 2015-12-31 | 2016-03-30 | 重庆红江机械有限责任公司 | Two-stage pressure limiting valve for diesel engine high pressure common rail |
| CN205298114U (en) * | 2015-12-25 | 2016-06-08 | 郑州磨料磨具磨削研究所有限公司 | Pump formula superhigh pressure relief valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08158971A (en) * | 1994-12-07 | 1996-06-18 | Zexel Corp | Fuel pump for high pressure fuel injection device |
-
2016
- 2016-12-08 CN CN201611123052.3A patent/CN106593730B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886643A (en) * | 2010-07-23 | 2010-11-17 | 吴旭 | Control valve special for hydraulic lifting of plunger cylinder |
| CN103850999A (en) * | 2012-11-29 | 2014-06-11 | 中国船舶重工集团公司第七一一研究所 | Oil pump oil inlet quantity adjusting control valve used for high pressure common rail system |
| CN103758670A (en) * | 2013-12-12 | 2014-04-30 | 中国北方发动机研究所(天津) | High-flow inlet metering valve for high-pressure common-rail variable displacement pump |
| CN204239117U (en) * | 2014-11-25 | 2015-04-01 | 中国船舶重工集团公司第七一一研究所 | A kind of relief valve being applicable to heavy oil common rail system |
| CN205298114U (en) * | 2015-12-25 | 2016-06-08 | 郑州磨料磨具磨削研究所有限公司 | Pump formula superhigh pressure relief valve |
| CN105443816A (en) * | 2015-12-31 | 2016-03-30 | 重庆红江机械有限责任公司 | Two-stage pressure limiting valve for diesel engine high pressure common rail |
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| CN106593730A (en) | 2017-04-26 |
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