EP0817914A1 - Soupape de pression - Google Patents

Soupape de pression

Info

Publication number
EP0817914A1
EP0817914A1 EP96945711A EP96945711A EP0817914A1 EP 0817914 A1 EP0817914 A1 EP 0817914A1 EP 96945711 A EP96945711 A EP 96945711A EP 96945711 A EP96945711 A EP 96945711A EP 0817914 A1 EP0817914 A1 EP 0817914A1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
valve member
control
pressure valve
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.)
Granted
Application number
EP96945711A
Other languages
German (de)
English (en)
Other versions
EP0817914B1 (fr
Inventor
Christian Taudt
Helmut Simon
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 EP0817914A1 publication Critical patent/EP0817914A1/fr
Application granted granted Critical
Publication of EP0817914B1 publication Critical patent/EP0817914B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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

Definitions

  • the invention is based on a pressure valve according to the preamble of claim 1.
  • pressure valves known from DE 40 37 465 AI are used in delivery lines between a high-pressure chamber having a high-pressure chamber and an injection point, preferably between an injection pump and an injection valve of an internal combustion engine.
  • the pressure valve should ensure that the medium to be pumped, e.g. Fuel, reaches the injection point, or when the injection ends, the pressure supply to the injection point is interrupted when the pressure drops below the necessary injection pressure.
  • the medium to be pumped e.g. Fuel
  • the known pressure valve has a valve member which is axially displaceable in a pressure or pipe socket and which is held by a valve spring with its valve sealing surface in contact with a stationary valve seat.
  • the opening movement of the valve member takes place through the high fuel pressure built up in the high-pressure chamber, there in the pump work chamber of an injection pump, which lifts the valve member against the restoring force of the valve spring from the valve seat, so that a flow cross-section at the pressure valve is opened, via which the fuel reaches the injection valve.
  • a backflow throttle bore is also provided in the valve member, which is formed at least by a longitudinal bore.
  • the known pressure valve has the disadvantage that the timing of the opening of the maximum flow cross-section at the pressure valve cannot be set precisely and reproducibly due to the changing hydraulic conditions, so that the injection timing at the injection point cannot be determined precisely enough, which the Quality of the mixture preparation and combustion in the combustion chamber of an internal combustion engine to be supplied can significantly affect.
  • the 2-stage opening stroke movement of the valve member is controlled in a simple manner via
  • the throttle bore 31 in the valve member 15 is cut by a control bore 33 forming a control recess in the valve member 15, which is designed as a transverse bore in the exemplary embodiment.
  • the control bore 33 the edges of which in the axial direction toward the valve member 15 form control edges at the two outlet openings, acts to control the stroke movement of the valve member 15

Landscapes

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

Abstract

L'invention concerne une soupape de pression à monter dans une conduite d'alimentation, entre une chambre à haute pression et un point d'injection, comportant un tuyau de refoulement (3) munie d'une cavité (5) cylindrique, dans laquelle un élément de soupape de pression (15) est monté de manière à coulisser dans le sens axial. Cet élément de soupape de pression (15) présente une surface d'étanchéité (29) grâce à laquelle il coopère avec un siège (27) fixe pour définir la section d'écoulement, duquel il peut être soulevé sous l'effet de la pression de refoulement produite dans le sens d'écoulement (1), à l'encontre de la force d'un ressort de soupape (23).Dans l'élément de soupape (15), il est prévu un canal d'étranglement du flux de retour qui crée une compensation de pression lorsque la soupape de pression est en position de fermeture. Pour assurer un réglage précis de la définition de la section maximale d'écoulement au niveau de la soupape de pression, la course d'ouverture de l'élément de soupape s'effectue en deux temps, l'élément de soupape étant brusquement déplacé pour définir la section maximale d'ouverture après avoir effectué une partie déterminée de sa course.
EP96945711A 1996-01-27 1996-11-07 Soupape de pression Expired - Lifetime EP0817914B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19602906A DE19602906A1 (de) 1996-01-27 1996-01-27 Druckventil
DE19602906 1996-01-27
PCT/DE1996/002116 WO1997027396A1 (fr) 1996-01-27 1996-11-07 Soupape de pression

Publications (2)

Publication Number Publication Date
EP0817914A1 true EP0817914A1 (fr) 1998-01-14
EP0817914B1 EP0817914B1 (fr) 2002-02-20

Family

ID=7783834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945711A Expired - Lifetime EP0817914B1 (fr) 1996-01-27 1996-11-07 Soupape de pression

Country Status (7)

Country Link
EP (1) EP0817914B1 (fr)
JP (1) JP2000500838A (fr)
KR (1) KR100300508B1 (fr)
CN (1) CN1075165C (fr)
BR (1) BR9607806A (fr)
DE (2) DE19602906A1 (fr)
WO (1) WO1997027396A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI114501B (fi) * 2001-06-27 2004-10-29 Waertsilae Finland Oy Polttoainejärjestelmän virtausrajoitinventtiili
FI117805B (fi) * 2003-06-17 2007-02-28 Waertsilae Finland Oy Järjestely polttoaineen syöttölaitteistossa
US8291781B2 (en) 2007-12-21 2012-10-23 Schlumberger Technology Corporation System and methods for actuating reversibly expandable structures
US8733453B2 (en) 2007-12-21 2014-05-27 Schlumberger Technology Corporation Expandable structure for deployment in a well
CN102536463A (zh) * 2010-12-22 2012-07-04 中国航空工业集团公司沈阳发动机设计研究所 一种断流活门
CN103437930B (zh) * 2013-08-13 2018-05-29 南京威孚金宁有限公司 等压阀性能的控制方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060181A (en) * 1965-01-11 1967-03-01 Cav Ltd Liquid fuel supply systems for internal combustion engines
FR1543884A (fr) * 1966-11-11 1968-10-25 Cav Ltd Dispositif d'alimentation en combustible pour moteur à combustion interne
JPS61294166A (ja) * 1985-06-21 1986-12-24 Yanmar Diesel Engine Co Ltd 内燃機関用燃料噴射ポンプ
DE4037465A1 (de) * 1990-10-31 1992-05-07 Daimler Benz Ag Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
JPH07305668A (ja) * 1994-05-11 1995-11-21 Nippondenso Co Ltd デリバリバルブ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9727396A1 *

Also Published As

Publication number Publication date
JP2000500838A (ja) 2000-01-25
DE19602906A1 (de) 1997-07-31
CN1179197A (zh) 1998-04-15
WO1997027396A1 (fr) 1997-07-31
KR19980702720A (ko) 1998-08-05
EP0817914B1 (fr) 2002-02-20
DE59608762D1 (de) 2002-03-28
KR100300508B1 (ko) 2002-06-26
BR9607806A (pt) 1998-07-07
CN1075165C (zh) 2001-11-21

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