EP1283354A3 - Fuel injection system - Google Patents

Fuel injection system Download PDF

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Publication number
EP1283354A3
EP1283354A3 EP02016623A EP02016623A EP1283354A3 EP 1283354 A3 EP1283354 A3 EP 1283354A3 EP 02016623 A EP02016623 A EP 02016623A EP 02016623 A EP02016623 A EP 02016623A EP 1283354 A3 EP1283354 A3 EP 1283354A3
Authority
EP
European Patent Office
Prior art keywords
solenoid valve
fuel
fuel injection
flow channel
injection system
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Withdrawn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
EP02016623A
Other languages
German (de)
French (fr)
Other versions
EP1283354A2 (en
Inventor
Cornelio Leonardi
Rainer Haeberer
Marco Balice
Helmut Clauss
Hans-Peter Schaal
Andreas Rettich
Markus Rueckle
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 EP1283354A2 publication Critical patent/EP1283354A2/en
Publication of EP1283354A3 publication Critical patent/EP1283354A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
    • 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
    • F02M55/007—Venting means
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Eine Kraftstoffeinspritzeinrichtung (1) umfasst einen Injektor (3') und ein Magnetventil (8) zur Steuerung des Einspritzvorgangs. Das Magnetventil (8) weist in seinem Innenraum mindestens einen ersten Strömungskanal zur Hindurchführung von Kraftstoff durch einen Ankerraum (16) des Magnetventils (8) und mindestens einen zweiten Strömungskanal zur Rückführung von Kraftstoff aus dem Magnetventil (8) heraus in Richtung Magnetventilöffnung auf. Der mindestens eine zweite Strömungskanal ist mit einer Kraftstoffrückführung in einen Kraftstofftank verbunden. Diese Strömungsführung gewährleistet eine Entlüftung des Ankerraums (16) bei Berücksichtigung eines möglichst geringen Bauraums der Kraftstoffeinspritzeinrichtung (1).

Figure 00000001
A fuel injection device (1) comprises an injector (3 ') and a solenoid valve (8) for controlling the injection process. The solenoid valve (8) has at least one first flow channel for passing fuel through an armature space (16) of the solenoid valve (8) and at least one second flow channel for returning fuel out of the solenoid valve (8) towards the solenoid valve opening. The at least one second flow channel is connected to a fuel return to a fuel tank. This flow guidance ensures ventilation of the armature space (16) while taking into account the smallest possible space for the fuel injection device (1).
Figure 00000001
EP02016623A 2001-08-11 2002-07-25 Fuel injection system Withdrawn EP1283354A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10139680 2001-08-11
DE2001139680 DE10139680A1 (en) 2001-08-11 2001-08-11 Fuel injection system

Publications (2)

Publication Number Publication Date
EP1283354A2 EP1283354A2 (en) 2003-02-12
EP1283354A3 true EP1283354A3 (en) 2003-11-26

Family

ID=7695277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02016623A Withdrawn EP1283354A3 (en) 2001-08-11 2002-07-25 Fuel injection system

Country Status (3)

Country Link
EP (1) EP1283354A3 (en)
JP (1) JP2003113762A (en)
DE (1) DE10139680A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195736A1 (en) * 1985-02-21 1986-09-24 Stanadyne Inc. Accumulator injector
DE19616812A1 (en) * 1995-04-27 1996-10-31 Nippon Soken Fuel injection device for i.c. engine
EP0844385A1 (en) * 1996-11-21 1998-05-27 Denso Corporation Accumulator fuel injection apparatus for internal combustion engine
EP0907018A2 (en) * 1997-10-02 1999-04-07 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Electromagnetic fuel injector for internal combustion engines
DE19917190A1 (en) * 1999-04-16 2000-10-26 Mtu Friedrichshafen Gmbh Fuel injector for internal combustion engine; has high pressure channel to supply fuel and nozzle needle in guide bore and has high pressure space behind guide bore to receive overflowing fuel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0824190B1 (en) * 1992-12-23 2002-03-06 Ganser-Hydromag Ag Fuel injection valve
JP3446432B2 (en) * 1995-12-05 2003-09-16 株式会社デンソー Fuel injection device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195736A1 (en) * 1985-02-21 1986-09-24 Stanadyne Inc. Accumulator injector
DE19616812A1 (en) * 1995-04-27 1996-10-31 Nippon Soken Fuel injection device for i.c. engine
EP0844385A1 (en) * 1996-11-21 1998-05-27 Denso Corporation Accumulator fuel injection apparatus for internal combustion engine
EP0907018A2 (en) * 1997-10-02 1999-04-07 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Electromagnetic fuel injector for internal combustion engines
DE19917190A1 (en) * 1999-04-16 2000-10-26 Mtu Friedrichshafen Gmbh Fuel injector for internal combustion engine; has high pressure channel to supply fuel and nozzle needle in guide bore and has high pressure space behind guide bore to receive overflowing fuel

Also Published As

Publication number Publication date
DE10139680A1 (en) 2003-02-27
EP1283354A2 (en) 2003-02-12
JP2003113762A (en) 2003-04-18

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