GB2004588A - A fuel injection system for an internal combustion engine - Google Patents

A fuel injection system for an internal combustion engine

Info

Publication number
GB2004588A
GB2004588A GB7837805A GB7837805A GB2004588A GB 2004588 A GB2004588 A GB 2004588A GB 7837805 A GB7837805 A GB 7837805A GB 7837805 A GB7837805 A GB 7837805A GB 2004588 A GB2004588 A GB 2004588A
Authority
GB
United Kingdom
Prior art keywords
fuel
valve
pump
needle
spring
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
GB7837805A
Other versions
GB2004588B (en
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of GB2004588A publication Critical patent/GB2004588A/en
Application granted granted Critical
Publication of GB2004588B publication Critical patent/GB2004588B/en
Expired 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
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid 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
    • 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)
  • High-Pressure Fuel Injection Pump Control (AREA)

Abstract

The system comprises a regulatable fuel injection pump 2, a fuel injection valve 9 including a valve needle 12 biased by a spring 13 into its valve- closing position. The spring and one end of the needle are housed in a chamber 14 of the valve. In order to accelerate valve closure after each injection and to prevent fuel from dribbling, the spring-biased end of the needle is arranged to operate as a hydraulic piston intermittently acted upon by pressure of fuel delivered to this end by another fuel pump 4 connected to the injection pump 2 via a timing device 3 regulating the intermittent operation of the other pump 4 in such a way that it will deliver the fuel at a variable interval after the fuel delivery by the pump. The additional closing pressure thus exerted on the valve needle will slowly be reduced again by letting the fuel used for this purpose leak through a pressure-reducing passage 20 in a leak-fuel duct 19 back into a fuel reservoir 7. <IMAGE>
GB7837805A 1977-09-23 1978-09-22 Fuel injection system Expired GB2004588B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772742870 DE2742870C2 (en) 1977-09-23 1977-09-23 Fuel injector

Publications (2)

Publication Number Publication Date
GB2004588A true GB2004588A (en) 1979-04-04
GB2004588B GB2004588B (en) 1982-08-25

Family

ID=6019730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7837805A Expired GB2004588B (en) 1977-09-23 1978-09-22 Fuel injection system

Country Status (3)

Country Link
DE (1) DE2742870C2 (en)
FR (1) FR2423649A1 (en)
GB (1) GB2004588B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269289A2 (en) * 1986-11-28 1988-06-01 Diesel Technology Corporation Diesel unit fuel injector with spill assist injection needle valve closure
EP0441738A2 (en) * 1990-02-07 1991-08-14 Ail Corporation High pressure fuel injection system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK174240B1 (en) * 1994-03-08 2002-10-14 Man B & W Diesel As Fuel valve and high pressure gas engine with such a valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810453A (en) * 1971-10-18 1974-05-14 G Wolfe Fuel injection system
US4036192A (en) * 1974-02-08 1977-07-19 Diesel Kiki Co. Engine fuel injection system
DE2500644C2 (en) * 1975-01-09 1988-07-07 Klöckner-Humboldt-Deutz AG, 5000 Köln Fuel injection valve for internal combustion engines
DE2558790A1 (en) * 1975-12-24 1977-07-14 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR COMBUSTION MACHINES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269289A2 (en) * 1986-11-28 1988-06-01 Diesel Technology Corporation Diesel unit fuel injector with spill assist injection needle valve closure
EP0269289A3 (en) * 1986-11-28 1989-02-01 Diesel Technology Corporation Diesel unit fuel injector with spill assist injection needle valve closure
EP0441738A2 (en) * 1990-02-07 1991-08-14 Ail Corporation High pressure fuel injection system
EP0441738A3 (en) * 1990-02-07 1991-12-18 Ail Corporation High pressure fuel injection system

Also Published As

Publication number Publication date
FR2423649A1 (en) 1979-11-16
DE2742870B1 (en) 1979-03-22
DE2742870C2 (en) 1979-11-15
GB2004588B (en) 1982-08-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee