CN107002619A - Fuel delivery system - Google Patents

Fuel delivery system Download PDF

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Publication number
CN107002619A
CN107002619A CN201580066426.XA CN201580066426A CN107002619A CN 107002619 A CN107002619 A CN 107002619A CN 201580066426 A CN201580066426 A CN 201580066426A CN 107002619 A CN107002619 A CN 107002619A
Authority
CN
China
Prior art keywords
fuel
pressure
piston
flow path
leakage
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.)
Pending
Application number
CN201580066426.XA
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Chinese (zh)
Inventor
A·布朗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi International Operations Luxembourg SARL
Original Assignee
Delphi International Operations Luxembourg SARL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Delphi International Operations Luxembourg SARL filed Critical Delphi International Operations Luxembourg SARL
Publication of CN107002619A publication Critical patent/CN107002619A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/024—Means for varying pressure in common rails by bleeding fuel pressure between the low pressure pump and the high pressure pump
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0056—Throttling valves, e.g. having variable opening positions throttling the flow
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0073—Pressure balanced valves

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A kind of combination type low voltage adjuster Venturi tube (100 for common rail internal combustion engine fuel induction system, 200) part is included in the outer body (102 of the combined unit, 202) reciprocating piston (104,204) and the Venturi tube for returning to flow path (32) generation pressure drop for injector leakage in.

Description

Fuel delivery system
Technical field
The present invention relates to fuel delivery system, more specifically to for common rail fuel injection system, (such as diesel oil fires Expect spraying system) fuel delivery system pressure-regulating device.
Background technology
The known fuel delivery system of common rail application (such as single plunger co-rail diesel pump application) includes control fuel from convex Roller box produces pressure drop to the low-pressure regulator of the backflow of fuel tank and for injector leakage return flow path (i.e. pressure is reduced) Separated Venturi tube.The fuel stream through the Venturi tube changes according to opening/closing function of adjuster.
The separated low-pressure regulator and Venturi tube of the pump of prior art need multiple internal bores and for accommodating this The relatively large pump case of two separated parts.
The content of the invention
It is an object of the invention to provide a kind of improved fuel delivery system, the fuel delivery system at least mitigates above-mentioned ask Topic.
Thus, in the first aspect, the invention provides a kind of pressure-regulating device according to claim 1.
The pressure-regulating device includes being positioned in reciprocating piston in the outer body of integrated component；Wherein, The fuel for coming from second entrance fuel flow path enters the recess of the pressure-regulating device via entry port；Wherein, The piston is spring-biased to closed position, in the closed position, The fuel stream be obstructed and can not from the recess via to Few regulation flowing ports exit to returning leakage and return to flow path, and in the closed position, and The fuel stream can be from described Recess returns to port via at least one time leakage and exited to described time leakage return flow path；And wherein, fired in pre-entry Expect under pressure, the bias of spring described in the piston overpowers and be pushed to fully open position, in the fully open position, combustion Stream can be exited from the recess via described or each regulation flowing ports and via described or each leakage return port of returning Flow path is returned to described time leakage.
Preferably, the recess is limited in the piston, and the spring is arranged in spring chamber, wherein, institute State recess and the spring chamber is separated by the wall of the piston；The pressure-regulating device further comprises in the spring cavity Room and described time leakage return to the damping aperture of offer flow path between flow path；Wherein, the spring chamber and the resistance Buddhist nun aperture is used as the damping unit that the motion to the piston is damped.
The Venturi tube can include being located at the gap being arranged in the internal annular projection in the piston.
In another aspect, the present invention includes a kind of fuel delivery system for explosive motor, the fuel conveying System includes pressure-regulating device according to the above.
Brief description of the drawings
The present invention is illustrated by way of example referring now to accompanying drawing, wherein：
Fig. 1 is the schematic diagram of fuel delivery system according to the first embodiment of the invention；
Fig. 2 is the sectional view of combination type low voltage adjuster/venturi tube part according to the first embodiment of the invention；
Fig. 3 is the schematic diagram of fuel delivery system second embodiment of the invention；And
Fig. 4 is the sectional view of combination type low voltage adjuster/venturi tube part second embodiment of the invention.
Embodiment
In the present invention, Venturi tube is bound in low-pressure regulator piston, to form single pressure regulating part.
Reference picture 1, according to the first embodiment of the invention include combination type low voltage adjuster/Wen's pipe unit 100 Pressure-regulating device be shown schematically as the part of fuel delivery system 2.Fuel all (such as diesel oil) with low pressure from including The fuels sources of fuel tank 10 are supplied to cam box 12.From cam box 12, fuel is along first entrance fuel flow path 6 via mistake Filter 14, entrance metering valve 16 and inlet valve 18, which are provided, arrives pumping chamber 20.Fuel is then pressurized in pumping chamber 20 High pressure, and fuel under high pressure is supplied to one via outlet valve 22 and common rail accumulator volume 24 along fuel under high pressure path 32 Or multiple injectors 26.
Second entrance flow path 8 is additionally provided with from cam box 12；Second input flow path 8 is by inlet pressure Fuel is provided to adjuster/Wen's pipe unit 100.The pressure of the backflow of adjuster/regulation fuel of Wen's pipe unit 100, by Average fuel pressure in this control cam box.After combined regulation device/Wen's pipe unit 100 is exited, The fuel stream along Return leakage return flow path 30 and return to fuel tank 10 to return leakage pressure.
Adjuster/Wen's pipe unit 100 returns leakage flow path 32 via injector and is also received back to escape of fuel from injector 26 Stream.Venturi action is returned on leakage current in the injector, and then, the injector returns leakage current and also returns to flow path via time leakage 30 return to fuel tank 10.
It is described in more detail below the operation of adjuster/Wen's pipe unit 100.
Reference picture 2, combined regulation device/Wen's pipe unit 100 of first embodiment of the invention includes outer body 102, including the internals of piston 104 is externally arranged in body 102 to move back and forth in outer body 102.It is living The inside limits recess 106 of plug 104.
Adjuster/Wen's pipe unit 100 includes first end (i.e. upstream end) 108 and the second end away from first end 108 110, the second end 110 is provided with spring chamber 120.Radial wall 112 and piston 104 that spring chamber 120 passes through piston Recess 106 is separated.Biasing device including helical spring 122 is arranged in spring chamber 120.Spring 122 is against by outside sheet The first spring base 124 that the internal end surface 162 of the radial wall 160 of body 102 is provided and provided by the end face 116 of piston 104 the Two spring bases 126, radial wall 160 limits the second end 110 of unit 100.
Piston 104 includes the inner openings 130 formed by the gap in annular internal projection 118.
Adjuster/Wen's pipe unit 100 includes being located at the entry port 134 at upstream end 108, and entry port 134 is used for Receive the fuel for the second entrance flow path 108 for coming from cam box 12.Through unit 100 outer body be provided with it is multiple Port：Regulation flowing ports 140,142 are set towards the first end 108 of unit 100；Return leakage and return to port 144 towards unit 100 The second end 110 set；Wen's pipe port 132, which is located to be axially located regulation flowing ports 140,142 and return leakage, returns to port 144 Between position at.
In the first embodiment of the present invention, go back to leakage return port 144 and be arranged on adjuster/Wen's pipe unit 100 In the axial side wall 166 of outer body.
In addition, damping aperture 146 is disposed through the outer body of adjuster/Wen's pipe unit 10 towards the second end 110 102, so as to provide damped flow path between spring chamber 120 and time leakage return to flow path 30.
Come from the fuel in inlet pressure of second entrance flow path 8 of cam box 12 via entry port 134 In the recess 106 for being flowed into adjuster/Wen's pipe unit 100.In the pressure for the fuel for entering adjuster/Wen's pipe unit 100 Under, as described in more detail below, piston 104 can be moved between fully open position and fully closed position.Complete Open position, as shown in Fig. 2 piston 104 is located at extreme lower position (in Fig. 1 and Fig. 2 orientation), and in closed position, piston 104 are located at uppermost position in fig-ure.
Piston 104 is spring biased toward fully closed position, i.e. spring 122 and piston is biased away from into the outer of unit 100 The internal end surface 162 of portion's body 102.In fully closed position, regulation flowing ports 140,142 are by the axial walls 164 of piston 104 Top section 168 outer surface sealing, thus will leave recess 106 via regulation flowing ports 140,142 flow path Sealing.
In fully closed position, realize by Wen's pipe port 132, via the axial side wall 166 for being arranged on piston 104 In corresponding Wen's pipe port 170 and the fuel flow path led in Wen's tube section 172 of recess 106.The flowing is formed Realized by the otch 152,154 being arranged on above and below Wen's pipe port 170 in the outer wall 164 of piston 104 Pressure drop, otch 152,154 prevents outer wall 164 from sealing Wen's pipe port 132 of outer body 102.Thus, Wen's pipe port 132nd, 170 pressure for still acting on and the injector received in recess 106 flowing back are reduced to predeterminated level.Similarly, borrow Help be arranged on piston 104 above and below the correspondence in the axial walls for being arranged on piston 104 time leakage return port 172 Other otch 156,158 in outer wall 164, realizes and leaves recess 106, port 172 is returned to via go back to leakage, by returning leakage return The flow path of port 144, in addition otch 156,158 prevent outer wall 164 will return leakage return port 144 seal.
Leakage flow path 32 is returned from injector to be in than entering via the fuel of Wen's pipe port 132,170 into recess 106 Under the high pressure of mouth pressure.Wen's pipe port 132,170 forms pressure drop in injector returns to stream, thus returns the injection of fuel The pressure of backflow is reduced to predeterminated level.
The fuel for entering recess 106 via entry port 134 determines the pressure in the fuel by exiting cam box 12 Inlet pressure under.Thus, the power of piston 104 is supplied to by depending on the size of inlet pressure by the fuel for entering recess 106.
Applied if the power applied by Inlet Fuel pressure to piston 104 is less than by spring 122 to the power of piston 104, Piston 104 will not be moved, and will be retained in fully closed position, and in the fully closed position, fuel can not pass through regulation Flowing ports 140,142 flow out from the recess.
At pre-entry fuel pressure or more, apply the power to piston 104 by more than the biasing force of spring 122.It is living Plug 104 thus the internal end surface 162 of outer body 102 is pushed to along the longitudinal axis A of adjuster/Wen's pipe unit 100, i.e., Piston 104 is pushed to fully open position from fully closed position, and in the fully open position, fuel can flow end from regulation Mouth 140,142 flows out.In Fig. 2 orientation, piston 104 is pushed down.
Spring chamber 120 and damping aperture 146 be used as damping mechanism with to piston 104 towards the inside of outer body 102 The motion of end face 162 is damped.
When piston 104 is located at fully open position, regulation flowing ports 140,142 are no longer by the outer wall 164 of piston 104 Stop/sealing, therefore realize from cam box 12 by adjusting flowing ports 140,142 reach back leakage return flow path 30 one Bar additional flow, that is to say, that in open position, in addition to returning leakage and returning to port 144, fuel also flows via regulation Port 140,142 is withdrawn into back leakage and returns to flow path 30.
When piston 104 is located at fully open position, the flowing road that leakage flow path 32 leads to recess 106 is gone back to from injector Footpath is maintained by Wen's pipe port 132,170, and Wen's pipe port continues that flow path 32 will be returned from injector The pressure of the stream of reception, which is reduced to, to be made a reservation for back leak pressure.
Return port 144 (when piston 104 is located at closed position) is leaked via returning or via time leakage return port 144 and tune Both section flowing ports 140,142 (when piston 104 is located at open position) exit the recessed of adjuster/Wen's pipe unit 100 The fuel in portion 106 returns to flow path 30 via time leakage and returns to fuel tank 10 to make a reservation for back leakage pressure.
When piston 104 positioned at partial open position be between fully open position and fully closed position when, part of fuel Stream can be exited via regulation flowing ports 140,142, i.e., compared with piston 104 is positioned at fully open position, the combustion of decrement Material can be exited via regulation flowing ports 140,142.
Adjuster/Wen's pipe unit 10 is used for adjusting the fuel pressure in cam box 12.If the fuel in cam box 12 Pressure exceedes greatly very much predetermined value, then piston 104 is moved to open position and is allowed more fuel to flow through and reach back leakage and return Loop footpath 30, is thus reduced to predetermined pressure by the fuel pressure in cam box 12.Thus, maintained in cam box 12 selected Predetermined average fuel pressure.
For the opening pressure of adjuster/venturi tube part 100, though what piston 104 was moved towards fully open position Pressure, by the size of the inner openings 130 of piston, the stiffness coefficient of spring 122 and preloads, adjusts flowing ports 140,142 Position and damp the size in aperture 146 and determine.Therefore, predetermined average fuel pressure according to needed for cam box 12 is selected Select these parameters.
In addition, the size of inner openings 130 be selected to allow right amount fuel by Wen's tube section 172 with for Adjusting pressure sets acquisition is necessary to reduce.
Reference picture 3, schematically show in figure 3 as fuel delivery system 202 a part according to the present invention Alternative second embodiment combination type low voltage adjuster/Wen's pipe unit 200.Alternative adjuster/Venturi tube the list It is positioned at fully open position that member 200 is separately shown in Fig. 4.
As first embodiment, second embodiment includes combined regulation device/Wen's pipe unit 200, the combination Formula adjuster/Wen's pipe unit 200 includes being arranged in the outer body 202 of adjuster/Wen's pipe unit 200 back and forth transporting Dynamic piston 204.
However, in this second embodiment, piston 204 does not include the radial wall for separating recess 206 and spring chamber.Cause And, recess 206 includes the interior zone being limited in piston 106 and also spring chamber region.
In this second embodiment, return leakage and return to the outer body 202 that port 244 is located at adjuster/Wen's pipe unit 200 Radial wall 260 in, the radial wall 260 limit unit 200 remote first end (upstream end) 208 the second end 210.
Due to the damping aperture that second embodiment does not extend including separated spring chamber or from spring chamber, therefore live The opening of plug, i.e. piston 204 towards the internal end surface 262 of outer body 202 motion, it is not dampened.
As first embodiment, when piston 204 is located at closed position, regulation flowing ports 240,242 are by piston The outer surface sealing of the top section 168 of 204 outer wall 264, however, fuel, which can flow through back leakage, returns to port 244, and works as When piston 204 is located at open position, fuel can return to port 244 and regulation flowing ports 240,242 from recessed by returning leakage Flow out in portion 206.
Therefore, second embodiment allows fuel in the downstream of Wen's pipe port 232,270 (i.e. towards unit 200 Second end 210) adjuster/Wen's pipe unit 200 is flowed through with less limitation.
In two embodiments of the present invention, when Venturi tube is combined in the regulators, the fuel of Venturi tube is flowed through Pressure ratio prior art embodiment in it is more consistent.Thus, produced by Venturi tube in fuel pressure and compare prior art The more consistent pressure drop of embodiment.
Compared with prior art embodiment, The present invention reduces the quantity of required internal bore.In addition, with existing skill Art embodiment is compared, and Venturi tube and adjuster are combined into a part also allows to reduce total pump Package size.
Reference
2：Fuel delivery system
6：First entrance flow path
8：Second entrance flow path
10：Fuel tank
12：Cam box
14：Filter
16：Entrance metering valve
18：Inlet valve
20：Pumping chamber
22：Outlet valve
24：Public accumulator volume
26：Injector
28：Fuel under high pressure path
30：Return leakage and return to flow path
32：Injector returns leakage flow path
100、200：Adjuster/Wen's pipe unit
102、202：Outer body
104、204：Piston
106、206：Recess
108、208：The first end of unit, i.e. upstream end
110、210：Second end
112、212：Piston radial wall
116：The end face of piston
118：The annular internal projection of piston
120：Spring chamber
122：Spring
124：First spring base
126：Second spring seat
130：Outer body venturi orifice
132、232：Wen's pipe port
134：Entry port
140、142、240、242：Adjust flowing ports
144、244：The leakage of returning of outer body returns to port
146：Damp aperture
152、154：Piston otch (venturi region)
156、158：Piston otch (returns leakage and returns to port areas)
160、260：The radial wall of outer body
162、262：The radial end face of outer body
164、264：The axial outer wall of piston
166：The side wall of outer body
168：The top section of axial outer wall
170：Wen's pipe port of piston
172：The leakage of returning of piston returns to port
174：Venturi
A：The longitudinal axis of unit

Claims (4)

1. a kind of pressure-regulating device (100,200) of fuel delivery system (2) for explosive motor, the fuel conveying System includes cam box (12) and at least one fuel injector (26), wherein, first entrance fuel flow path (6) will be in The fuel of inlet pressure is supplied to pumping chamber (20) from the cam box (12), and the pumping chamber (20) is used to treat to be supplied It should be pressurizeed to the fuel of at least one fuel injector (26)；
The pressure-regulating device (100,200) includes：
Pressure regulator, the pressure regulator is used to adjust from the cam box (12) via second entrance fuel flow path (8) fuel in inlet pressure received, thus maintains predeterminated level by the fuel pressure in the cam box (12)；With And
Venturi tube, the Venturi tube is used to move via injector time leakage current from the injector (26) or whole injectors (26) The pressure reduction for the fuel that path (32) is received；
And wherein, in returning the fuel of leakage pressure via at least one port (140,142,144,240,242,244) from institute Pressure-regulating device is stated to exit to time leakage return flow path (30)；
Wherein, the Venturi tube and the pressure regulator form as one part (100,200), wherein, the pressure regulation Device (9100,200) further comprises being positioned in past in the outer body of the integrated component (100,200) (102,202) The piston (104,204) moved again；
And the fuel for wherein, coming from the second entrance fuel flow path (8) enters described via entry port (134) The recess (106,206) of pressure-regulating device (100,200)；
Wherein, the piston (104,204) is biased into closed position by spring (122), and in the closed position, The fuel stream is obstructed And can not be exited from the recess (106,206) via at least one regulation flowing ports (140,142,240,242) to described Return leakage and return to flow path (30), and in the closed position, The fuel stream can be from the recess (106,206) via at least One is returned leakage return port (144,244) and exited to described time leakage return flow path (30)；
And wherein, under pre-entry fuel pressure, the piston (104,204) overcome the bias of the spring (122) and Fully open position is pushed to, in the fully open position, The fuel stream can be from the recess (122) via described or each Regulation flowing ports (140,142,240,242) and via it is described or it is each return leakage return port (144,244) be withdrawn into it is described Return leakage and return to flow path (200).
2. pressure-regulating device (100) according to claim 1, wherein, the recess (106) is limited to the piston (104) in, and the spring (122) is arranged in spring chamber (120), and wherein, the recess (106) and the bullet Spring chamber (120) is separated by the wall of the piston (104)；
The pressure-regulating device (100) further comprises returning to flow path in the spring chamber (120) and described time leakage (30) the damping aperture (146) of flow path is provided between；
Wherein, the motion that the spring chamber (120) and the damping aperture (146) are used as to the piston (104) hinders The damping unit of Buddhist nun.
3. pressure-regulating device (100,200) according to claim 1 or 2, wherein, the Venturi tube, which includes being located at, to be set The inner openings 130 in internal annular projection (118) in the piston (104).
4. a kind of fuel delivery system (2) for explosive motor, the fuel delivery system includes will according to foregoing right The pressure-regulating device (100,200) any one of asked.
CN201580066426.XA 2014-11-04 2015-09-29 Fuel delivery system Pending CN107002619A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB1419607.5A GB201419607D0 (en) 2014-11-04 2014-11-04 Fuel delivery system
GB1419607.5 2014-11-04
PCT/EP2015/072353 WO2016071046A1 (en) 2014-11-04 2015-09-29 Fuel delivery system

Publications (1)

Publication Number Publication Date
CN107002619A true CN107002619A (en) 2017-08-01

Family

ID=52118661

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201580066426.XA Pending CN107002619A (en) 2014-11-04 2015-09-29 Fuel delivery system

Country Status (5)

Country Link
EP (1) EP3215733A1 (en)
KR (1) KR20170080623A (en)
CN (1) CN107002619A (en)
GB (1) GB201419607D0 (en)
WO (1) WO2016071046A1 (en)

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US11092126B2 (en) * 2019-09-03 2021-08-17 Pratt & Whitney Canada Corp. Common-rail fuel system with ejector pump and method of use thereof
WO2022020693A1 (en) * 2020-07-24 2022-01-27 Cummins Inc. Modular and scalable common rail fuel system architecture
DE102021002134B3 (en) * 2021-04-22 2022-09-29 Daimler Truck AG Fuel system for an internal combustion engine, in particular a motor vehicle, and motor vehicle with such a fuel system
DE102021002127B3 (en) * 2021-04-22 2022-09-29 Daimler Truck AG Fuel system for an internal combustion engine, in particular a motor vehicle, and motor vehicle with such a fuel system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114017223A (en) * 2021-11-03 2022-02-08 南岳电控（衡阳）工业技术股份有限公司 Oil discharge structure and oil supply system

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EP3215733A1 (en) 2017-09-13
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KR20170080623A (en) 2017-07-10

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Application publication date: 20170801