EP0147591A2 - Soupape d'alimentation pour pompes d'injection de carburant - Google Patents

Soupape d'alimentation pour pompes d'injection de carburant Download PDF

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Publication number
EP0147591A2
EP0147591A2 EP19840113595 EP84113595A EP0147591A2 EP 0147591 A2 EP0147591 A2 EP 0147591A2 EP 19840113595 EP19840113595 EP 19840113595 EP 84113595 A EP84113595 A EP 84113595A EP 0147591 A2 EP0147591 A2 EP 0147591A2
Authority
EP
European Patent Office
Prior art keywords
valve
closing member
valve closing
pressure
fuel
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.)
Withdrawn
Application number
EP19840113595
Other languages
German (de)
English (en)
Other versions
EP0147591A3 (fr
Inventor
Gerald Ing.grad. Höfer
Helmut Laufer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0147591A2 publication Critical patent/EP0147591A2/fr
Publication of EP0147591A3 publication Critical patent/EP0147591A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F02M59/462—Delivery valves
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y10T137/7772—One head and seat carried by head of another
    • Y10T137/7774—Supporting valve spring carried by supporting valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y10T137/7772—One head and seat carried by head of another
    • Y10T137/7777—Both valves spring biased

Definitions

  • valve closing member a valve plate which has a valve seat on the end face of an annular web which comes to rest on a plate-shaped valve body.
  • this valve closing member separates the pump side from the injection valve side of the delivery line.
  • the valve closing member moves against the force of the return spring a distance that multiplied by the area of the valve closing member gives the injection volume minus the volume that flows through the circumference of the valve body.
  • the valve closing member gradually returns to its seat on the valve body under the action of the return spring, the fuel volume displaced thereby flowing back in part through the throttle cross-section which the valve body forms with the wall guiding it.
  • the pressure valve according to the invention with the characterizing features of the main claim has the advantage that the check valve provided here both avoids the post-injection of fuel by effectively reducing the pressure waves and also reliably maintains a static pressure which prevents combustion gases from entering the delivery line or the fuel system the injection pump.
  • the figure shows a longitudinal section through a pressure valve 1, which is screwed into the housing 2 of a fuel injection pump, not shown, and sits in a delivery line 4 between the pump work chamber, not shown, of the fuel injection pump and an injection valve 3 of the internal combustion engine, not shown, to be supplied.
  • the pressure valve has a connection piece 6 which is screwed into a threaded bore of the housing.
  • the connecting piece has an axial recess 8 which is open towards the screw-in side and essentially has the shape of a blind hole. Coaxial to the axial recess there is a connection bore 10 which opens into a connection nipple 11 of the connecting piece and thus connects the axial recess to the delivery line 4.
  • the pump-side end face 12 of the connecting piece is pressed in the screwed-in state onto a disk-shaped valve body 15 which bears against a shoulder 16 at the bottom of the threaded blind bore 7.
  • the valve body has an axial opening 17 which connects the axial recess 8 to the delivery line part 4b which leads from the threaded bore 7 and which leads to the pump work chamber (not shown).
  • the outside diameter of the valve body 15 is the same size as the outside diameter of the connecting piece in the region of its end face 12, the valve body and connecting piece advantageously being held together with the aid of an annular clamp 18, especially for transport purposes.
  • a valve closing member 20 is slidably arranged, which is essentially cylindrical and has on its outer surface guide surfaces 21 in at least two different radial planes which guide the valve closing member exactly within the axial recess 8 and at the same time have a throttle cross section 22 together with form the wall of the recess 8.
  • the part of the axial recess 8 on the connection bore side can be connected to the part of the recess 8 on the valve body side via the throttle cross section.
  • the valve closing member also has a bottom 23 toward the axial recess 8, on which a return spring 24 comes to the system, which on the other hand is supported on the connection bore-side end 25 of the recess 8 and endeavors to contact the valve closing member with its pump-side end 26 Bring valve body 15.
  • This end face of the valve closing member is ground flat as a sealing surface and the adjacent end face of the valve body is ground flat as a valve seat.
  • a throttle bore 28 is provided in the center of the bottom 23 and can be closed from an injection pump side by a disk-shaped or spherical valve member 29 of a check valve 30.
  • This has a return spring 31 which is supported on a spring plate 32 which bears against a locking ring 33 inserted into the inner wall of the valve closing member 20.
  • the spring plate has an axial opening 34, so that a continuous connection of the delivery line 4 is made when the valve member 29 is lifted off.
  • valve closing member 20 If fuel is conveyed to the internal combustion engine during operation of a fuel injection pump, in which the pressure valve according to the invention is installed, the valve closing member 20 is moved from its seat on the valve body 15 under the pressure of the fuel supplied via the delivery line 4 lifted.
  • the check valve 30, which is acted upon by the return spring 31 and the fuel delivery pressure in the closing direction, is of course closed at this time.
  • fuel can pass through the throttle cross sections 22 into the part of the axial recess 8 on the connection bore side and the valve closing member is further moved in the conveying direction under the action of the delivery pressure against the force of the return spring 24.
  • the throttle cross-section When dimensioning, it must be taken into account that the throttle cross-section must be at least large enough so that while the valve closing element has lifted from its seat, the injection quantity and an additional quantity, which is intended to ensure a static pressure in the fuel delivery line between the pressure valve and the injection valve, can flow through.
  • the valve closing member constitutes a separating piston, ie the essential fuel that is injected is conveyed by moving the valve closing member.
  • the throttle losses of the fuel flowing through the throttle cross section are kept very low, so that the highest injection pressures can be achieved.
  • the valve closing element is moved back into its starting position under the action of the return spring 24, the fuel displaced in the process being able to flow over the throttle cross sections 22.
  • the throttle cross section determine the return speed of the valve closing member 20. Now meet after the injection valve has closed after delivery reflected pressure waves on the valve closing member, these are quickly reduced by the backward movement of the valve closing member. Furthermore, the check valve 30 is also opened so that fuel can flow back through the throttle bore 28 and the pressure peak of the reflection pressure wave is further reduced. This fuel, which overflows during the return movement of the valve closing element, also returns in the bypass via the throttle cross section 22.
  • the check valve 30 is also effective even after the valve closure member has been replaced on the valve body 15 and guarantees an exact standing pressure in the delivery line 4 between the pressure valve 1 and the injection valve 3.
  • the play between the guide surfaces 21 and the wall of the axial recess is kept very low. This prevents the valve closing member from sloping onto the valve body, which could lead to the destruction of the sealing seat.
  • the throttle cross section 22, which can be produced per se by an undersize of the valve body outer diameter compared to the diameter of the axial recess, can also be realized by throttle grooves, as also shown in the figure. This has the advantage that, in particular, very precise, tight guidance is ensured with the aforementioned purpose.
  • the check valve is provided with a disk-shaped valve member 29.
  • This can advantageously also be a spherical valve closing member which is acted upon by the return spring 31 with the interposition of a guided spring plate.
  • These in the example shown, are located on a valve supports closing member 20 connected seat, can in an alternative embodiment also be supported on the valve body 15 in a stationary manner, which is advantageous for setting the opening pressure of the check valve 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP19840113595 1983-12-12 1984-11-10 Soupape d'alimentation pour pompes d'injection de carburant Withdrawn EP0147591A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833344825 DE3344825A1 (de) 1983-12-12 1983-12-12 Druckventil fuer kraftstoffeinspritzpumpen
DE3344825 1983-12-12

Publications (2)

Publication Number Publication Date
EP0147591A2 true EP0147591A2 (fr) 1985-07-10
EP0147591A3 EP0147591A3 (fr) 1986-02-05

Family

ID=6216679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840113595 Withdrawn EP0147591A3 (fr) 1983-12-12 1984-11-10 Soupape d'alimentation pour pompes d'injection de carburant

Country Status (4)

Country Link
US (1) US4628957A (fr)
EP (1) EP0147591A3 (fr)
JP (1) JPS60142050A (fr)
DE (1) DE3344825A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593240A1 (fr) * 1986-01-17 1987-07-24 Bosch Gmbh Robert Pompe d'injection de carburant a repartition pour moteurs a combustion interne
EP2507505A1 (fr) * 2009-12-01 2012-10-10 Stanadyne Corporation Pompe à carburant à rampe commune ayant des soupapes de décharge et de limitation des surpressions combinées
WO2014139698A1 (fr) * 2013-03-15 2014-09-18 Robert Bosch Gmbh Pompe à carburant à haute pression avec clapet de sortie disposé entre une chambre d'alimentation et une sortie

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704743A1 (de) * 1987-02-14 1988-08-25 Schaeffler Waelzlager Kg Steuereinrichtung fuer ein ventil
GB2268225B (en) * 1992-06-29 1995-07-05 Ford Motor Co A fuel supply arrangement
DE4240303C2 (de) * 1992-12-01 2003-09-11 Bosch Gmbh Robert Druckventil
GB9302566D0 (en) * 1993-02-10 1993-03-24 Lucas Ind Plc Valve
US5311901A (en) * 1993-06-01 1994-05-17 Ostrom Charles R Pressure interrupter device
DE4344190A1 (de) * 1993-12-23 1995-06-29 Orange Gmbh Kraftstoffeinspritzvorrichtung mit Hochdruck-Kraftstoffspeicher
SE501748C2 (sv) * 1994-05-20 1995-05-08 Lj Oljeledningar Ab Anordning för tryckstötsdämpning
GB9416798D0 (en) * 1994-08-19 1994-10-12 Lucas Ind Plc Delivery valve
DE19535368C2 (de) * 1995-09-25 1998-04-30 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
US5842452A (en) * 1997-11-25 1998-12-01 Pattanaik; Satish Idle stabilizing variable area inlet for a hydraulically-actuated fuel injection system
US6467457B1 (en) * 1999-10-25 2002-10-22 International Engine Intellectual Property Company, L.L.C. Injector actuating fluid check and methods
KR20020022340A (ko) * 2000-09-20 2002-03-27 이계안 디젤엔진의 연료 과다 공급 방지장치
US6591812B2 (en) * 2000-12-14 2003-07-15 Siemens Diesel Systems Technology Rail connection with rate shaping behavior for a hydraulically actuated fuel injector
JP2003097387A (ja) * 2001-09-27 2003-04-03 Mitsubishi Electric Corp 高圧燃料供給装置
US7267108B2 (en) * 2005-04-18 2007-09-11 Ford Global Technologies, Llc Fuel system pressure relief valve with integral accumulator
US7628140B2 (en) * 2007-09-27 2009-12-08 Caterpillar Inc. High-pressure pump or injector plug or guide with decoupled sealing land
DE112011105549T5 (de) * 2011-08-24 2014-05-15 Toyota Jidosha Kabushiki Kaisha Fluidsteuervorrichtung und Kraftstoffversorgungssystem
US10006524B2 (en) * 2013-12-03 2018-06-26 Borgwarner Inc. Integrated pressure relief valve for hydraulic tensioner
GB2550882A (en) * 2016-05-26 2017-12-06 Delphi Int Operations Luxembourg Sarl Pressure regulator
CN106150812A (zh) * 2016-08-31 2016-11-23 南京威孚金宁有限公司 一种电控ve分配泵回油阀
DE102018114200A1 (de) 2017-06-15 2018-12-20 Borgwarner Inc. Spanner mit Rückschlagventil mit steuerbarer Steifigkeit
WO2019164525A1 (fr) 2018-02-26 2019-08-29 Borgwarner Inc Tendeur à force variable avec alésage primaire de technologie de réservoir interne
JP2020101279A (ja) 2018-12-21 2020-07-02 ボーグワーナー インコーポレーテッド 内部チェックバルブを含むピストンが備えられたテンショナ

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1576566A1 (de) * 1967-03-09 1970-02-19 Huber Dr Ing Eugen W Kavitationsfreie Einspritzanlage
GB1216682A (en) * 1967-12-08 1970-12-23 Tsni I K I Toplivnoi Apparatur A delivery valve arrangement of fuel injection pumps for internal combustion engines
DE2348865A1 (de) * 1973-09-28 1975-04-10 Maschf Augsburg Nuernberg Ag Vorrichtung zur brennstoffeinspritzung
AT334695B (de) * 1972-11-06 1976-01-25 Vysoke Uceni Tech Brne Doppelventil fur dieselmotor-einspritzpumpen
EP0061534A1 (fr) * 1981-03-27 1982-10-06 Robert Bosch Gmbh Soupape de refoulement pour une pompe d'injection de carburant
GB2126664A (en) * 1982-09-08 1984-03-28 Lucas Ind Plc Delivery valve
EP0142008A2 (fr) * 1983-11-17 1985-05-22 Robert Bosch Gmbh Soupape de refoulement pour des pompes d'injection de combustible

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083660B (de) * 1957-12-11 1960-06-15 Draegerwerk Ag Druckgasatemschutzgeraet mit einem federbelasteten, als Warnsignalvorrichtung dienenden Rueckschlagventil
US2995148A (en) * 1959-05-29 1961-08-08 Novak Stanley Poppet valve and mounting
DE1289359B (de) * 1966-08-30 1969-02-13 Kloeckner Humboldt Deutz Ag Kraftstoffeinspritzsystem
US4280529A (en) * 1979-03-01 1981-07-28 Giancarlo Silvestri Vented fuel tank cap
DE3226409A1 (de) * 1982-07-15 1984-01-19 Robert Bosch Gmbh, 7000 Stuttgart Ventil fuer gasfoermige und/oder fluessige stroemungsmittel
US4478189A (en) * 1982-12-08 1984-10-23 Lucas Industries Fuel injection system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1576566A1 (de) * 1967-03-09 1970-02-19 Huber Dr Ing Eugen W Kavitationsfreie Einspritzanlage
GB1216682A (en) * 1967-12-08 1970-12-23 Tsni I K I Toplivnoi Apparatur A delivery valve arrangement of fuel injection pumps for internal combustion engines
AT334695B (de) * 1972-11-06 1976-01-25 Vysoke Uceni Tech Brne Doppelventil fur dieselmotor-einspritzpumpen
DE2348865A1 (de) * 1973-09-28 1975-04-10 Maschf Augsburg Nuernberg Ag Vorrichtung zur brennstoffeinspritzung
EP0061534A1 (fr) * 1981-03-27 1982-10-06 Robert Bosch Gmbh Soupape de refoulement pour une pompe d'injection de carburant
GB2126664A (en) * 1982-09-08 1984-03-28 Lucas Ind Plc Delivery valve
EP0142008A2 (fr) * 1983-11-17 1985-05-22 Robert Bosch Gmbh Soupape de refoulement pour des pompes d'injection de combustible

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593240A1 (fr) * 1986-01-17 1987-07-24 Bosch Gmbh Robert Pompe d'injection de carburant a repartition pour moteurs a combustion interne
EP2507505A1 (fr) * 2009-12-01 2012-10-10 Stanadyne Corporation Pompe à carburant à rampe commune ayant des soupapes de décharge et de limitation des surpressions combinées
EP2507505A4 (fr) * 2009-12-01 2014-02-05 Stanadyne Corp Pompe à carburant à rampe commune ayant des soupapes de décharge et de limitation des surpressions combinées
WO2014139698A1 (fr) * 2013-03-15 2014-09-18 Robert Bosch Gmbh Pompe à carburant à haute pression avec clapet de sortie disposé entre une chambre d'alimentation et une sortie

Also Published As

Publication number Publication date
EP0147591A3 (fr) 1986-02-05
DE3344825A1 (de) 1985-06-13
JPS60142050A (ja) 1985-07-27
US4628957A (en) 1986-12-16

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19841110

AK Designated contracting states

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PUAL Search report despatched

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Effective date: 19860530

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18D Application deemed to be withdrawn

Effective date: 19880531

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LAUFER, HELMUT

Inventor name: HOEFER, GERALD, ING.GRAD.