ES2171038T3 - Dispositivo de inyeccion de combustible para motores diesel. - Google Patents

Dispositivo de inyeccion de combustible para motores diesel.

Info

Publication number
ES2171038T3
ES2171038T3 ES98938739T ES98938739T ES2171038T3 ES 2171038 T3 ES2171038 T3 ES 2171038T3 ES 98938739 T ES98938739 T ES 98938739T ES 98938739 T ES98938739 T ES 98938739T ES 2171038 T3 ES2171038 T3 ES 2171038T3
Authority
ES
Spain
Prior art keywords
closing
nozzle needle
discharge
opening
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.)
Expired - Lifetime
Application number
ES98938739T
Other languages
English (en)
Inventor
Jean-Louis Froment
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.)
Wartsila France SAS
Original Assignee
Wartsila France SAS
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
Priority claimed from FR9709196A external-priority patent/FR2766238B1/fr
Priority claimed from FR9802938A external-priority patent/FR2775736B1/fr
Application filed by Wartsila France SAS filed Critical Wartsila France SAS
Application granted granted Critical
Publication of ES2171038T3 publication Critical patent/ES2171038T3/es
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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/025—Hydraulically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)

Abstract

La invención se refiere a un dispositivo para inyectar combustible en un motor diesel, empleando una bomba de flujo pulsante para mejorar el rendimiento del combustible de dichos motores, controlando el comienzo y el final de la inyección. Incluye un dispositivo (20) que controla el cierre y la abertura de la aguja inyectora (5), dotado de un circuito de descarga (21, 21'') controlado por una electroválvula (25) en conexión derivada entre el conducto de suministro de alta presión (7) y el conducto de retorno de baja presión (8). Dicho circuito de descarga (21, 21'') incluye una válvula de descarga (22) en donde la abertura y el cierre son ralentizados por un orificio calibrado (23). La válvula de descarga (22), situada más arriba de un orificio de descarga (27) proporcionado sobre el conducto de retorno (8), permite desviar parte del flujo de combustible no inyectado hacia la aguja de descarga (5) para ejercer allí una presión de cierre. Por consiguiente, esto da como resultado un mejor control sobre la abertura y el cierre de la aguja de descarga (5). Una válvula calibrada (24) garantiza que la presión en el circuito de descarga (21) se mantiene entre dos inyecciones. Durante el ciclo de inyección, el suministro de combustible hacia la aguja de descarga (5) no se ve impedida por los componentes del dispositivo de control (20). La invención es aplicable a los motores diesel que emplean bombas de inyección pulsantes.
ES98938739T 1997-07-16 1998-07-13 Dispositivo de inyeccion de combustible para motores diesel. Expired - Lifetime ES2171038T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9709196A FR2766238B1 (fr) 1997-07-16 1997-07-16 Dispositif d'injection de combustible pour moteurs diesel
FR9802938A FR2775736B1 (fr) 1998-03-06 1998-03-06 Dispositif d'injection de combustible pour moteurs diesel

Publications (1)

Publication Number Publication Date
ES2171038T3 true ES2171038T3 (es) 2002-08-16

Family

ID=26233690

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98938739T Expired - Lifetime ES2171038T3 (es) 1997-07-16 1998-07-13 Dispositivo de inyeccion de combustible para motores diesel.

Country Status (8)

Country Link
US (1) US6189509B1 (es)
EP (1) EP0995031B1 (es)
JP (1) JP2001510265A (es)
AT (1) ATE211525T1 (es)
AU (1) AU8735198A (es)
DE (1) DE69803384T2 (es)
ES (1) ES2171038T3 (es)
WO (1) WO1999004160A1 (es)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19938169A1 (de) * 1999-08-16 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
DE19939419A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
DE10012552A1 (de) * 2000-03-15 2001-09-27 Bosch Gmbh Robert Einspritzeinrichtung mit einem Aktor zur Nadelhubsteuerung
GB2367588B (en) * 2000-03-31 2004-11-10 Mitsubishi Motors Corp Accumulator fuel-injection apparatus
GB0008598D0 (en) * 2000-04-07 2000-05-31 Delphi Tech Inc Fuel system
DE10111293B4 (de) * 2001-03-09 2008-11-20 Robert Bosch Gmbh Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10113654A1 (de) * 2001-03-21 2002-09-26 Bosch Gmbh Robert Kraftsotffeinspritzeinrichtung für Brennkraftmaschinen
US6871629B2 (en) * 2001-07-31 2005-03-29 Thermo King Corporation Refrigeration system with low-fuel shutdown
SE523498C2 (sv) 2001-08-17 2004-04-27 Volvo Teknisk Utveckling Ab Förfarande för att styra bränsleinsprutningen till ett förbränningsrum samt en bränsleinsprutningsanordning för att genomföra förfarandet
DE10154802A1 (de) * 2001-11-08 2003-05-22 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10158660A1 (de) * 2001-11-30 2003-06-12 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10211439A1 (de) * 2002-03-15 2003-10-02 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10238951A1 (de) * 2002-08-24 2004-03-11 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung
WO2004072470A1 (en) * 2003-02-12 2004-08-26 Robert Bosch Gmbh Fuel injector pump system with high pressure post injection
DE102004028195A1 (de) * 2004-06-09 2005-12-29 Volkswagen Mechatronic Gmbh & Co. Kg Einspritzventil mit Schließdruckbeaufschlagung der Ventilnadel
CN101208512B (zh) * 2005-03-22 2011-01-05 沃尔沃拉斯特瓦格纳公司 用于控制燃料喷射器的方法
KR100756635B1 (ko) 2006-08-08 2007-09-07 현대자동차주식회사 페일 세이프티 기능이 채용된 2-밸브 전자 유닛 인젝터 장치
DE102007021330A1 (de) * 2007-05-07 2008-11-13 Robert Bosch Gmbh Kraftstoffinjektor für eine Brennkraftmaschine mit Common-Rail-Einspritzsystem
US7640919B1 (en) 2008-01-31 2010-01-05 Perkins Engines Company Limited Fuel system for protecting a fuel filter
US8291889B2 (en) 2009-05-07 2012-10-23 Caterpillar Inc. Pressure control in low static leak fuel system
DE102009032487A1 (de) * 2009-07-09 2011-01-13 J. Eberspächer GmbH & Co. KG Abgasreinigungseinreinigung für Kraftfahrzeuge
EP2478210A4 (en) * 2009-09-17 2013-06-05 Int Engine Intellectual Prop HIGH PRESSURE PUMP INJECTOR

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH495504A (de) 1968-08-28 1970-08-31 Sopromi Soc Proc Modern Inject Brennstoff-Einspritzventil mit elektromagnetischer Betätigung
DE2759187A1 (de) * 1977-12-31 1979-07-12 Bosch Gmbh Robert Kraftstoffeinspritzanlage mit mindestens einem kraftstoffeinspritzventil, insbesondere fuer grossmotoren
JPS57124032A (en) * 1981-01-24 1982-08-02 Diesel Kiki Co Ltd Fuel injector
FR2541379B1 (fr) * 1983-02-21 1987-06-12 Renault Perfectionnement aux systemes d'injection a commande electromagnetique pour moteur diesel de type pression-temps ou l'aiguille de l'injecteur est pilotee par la decharge puis la charge d'une capacite
US4741478A (en) 1986-11-28 1988-05-03 General Motors Corporation Diesel unit fuel injector with spill assist injection needle valve closure
DE4236882C1 (de) * 1992-10-31 1994-04-21 Daimler Benz Ag Kraftstoffeinspritzanlage mit einer Hochdruckpumpe und einer gemeinsamen Versorgungsleitung für alle Einspritzdüsen mit Magnetventilsteuerung
DE4240517A1 (de) 1992-12-02 1994-06-09 Bosch Gmbh Robert Kraftstoff-Einspritzeinrichtung für Diesel-Brennkraftmaschinen
DE4406901C2 (de) 1994-03-03 1998-03-19 Daimler Benz Ag Magnetventilgesteuerter Injektor für eine Brennkraftmaschine
JPH08158981A (ja) * 1994-12-02 1996-06-18 Nippondenso Co Ltd 燃料噴射装置
FI101168B (fi) * 1994-12-23 1998-04-30 Waertsilae Nsd Oy Ab Ruiskutusjärjestely ja menetelmä sen käyttämiseksi polttomoottorissa
GB9506959D0 (en) 1995-04-04 1995-05-24 Lucas Ind Plc Fuel system
JPH09158810A (ja) * 1995-10-02 1997-06-17 Hino Motors Ltd ディーゼルエンジン
JPH09209867A (ja) * 1996-02-07 1997-08-12 Mitsubishi Motors Corp 燃料噴射装置
FR2752268B1 (fr) 1996-08-07 1998-09-18 Froment Jean Louis Dispositif d'amelioration de la dynamique d'injection de combustible pour les moteurs diesel equipes de pompes d'injection a debit pulse

Also Published As

Publication number Publication date
US6189509B1 (en) 2001-02-20
ATE211525T1 (de) 2002-01-15
DE69803384D1 (de) 2002-02-28
AU8735198A (en) 1999-02-10
DE69803384T2 (de) 2002-09-26
EP0995031B1 (fr) 2002-01-02
JP2001510265A (ja) 2001-07-31
WO1999004160A1 (fr) 1999-01-28
EP0995031A1 (fr) 2000-04-26

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