FR2371583A1 - Fuel injector for compression ignition engine - has plunger raised by fuel pressure on shoulder with non-return valve - Google Patents

Fuel injector for compression ignition engine - has plunger raised by fuel pressure on shoulder with non-return valve

Info

Publication number
FR2371583A1
FR2371583A1 FR7734411A FR7734411A FR2371583A1 FR 2371583 A1 FR2371583 A1 FR 2371583A1 FR 7734411 A FR7734411 A FR 7734411A FR 7734411 A FR7734411 A FR 7734411A FR 2371583 A1 FR2371583 A1 FR 2371583A1
Authority
FR
France
Prior art keywords
plunger
fuel
shoulder
return valve
bore
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Withdrawn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
FR7734411A
Other languages
French (fr)
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of FR2371583A1 publication Critical patent/FR2371583A1/en
Withdrawn legal-status Critical Current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

Landscapes

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

Abstract

The injector has a body (10) with a cylindrical bore (11). A plunger (12) reciprocates in the bore. the upper part (13) of the plunger is fitted accurately to the ground bore. The lower part (14) leaves an annular gap (15) between itself and the bore. The fuel inlet pipe (16) enters the body just below the shoulder (19) formed on the plunger between its two sections. The plunger carries a needle (18) at its lower end which closes the injection orifice (17) in the body. Fuel entering under pressure from a delivery pump presses on the plunger shoulder (19) and raises the plunger against a spring (22) to open the valve. Fuel which leaks into the spring chamber (21) is returned through a non-return valve (25) when the fuel pressure drops.
FR7734411A 1976-11-18 1977-11-16 Fuel injector for compression ignition engine - has plunger raised by fuel pressure on shoulder with non-return valve Withdrawn FR2371583A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4800776 1976-11-18

Publications (1)

Publication Number Publication Date
FR2371583A1 true FR2371583A1 (en) 1978-06-16

Family

ID=10447036

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734411A Withdrawn FR2371583A1 (en) 1976-11-18 1977-11-16 Fuel injector for compression ignition engine - has plunger raised by fuel pressure on shoulder with non-return valve

Country Status (2)

Country Link
ES (1) ES464286A1 (en)
FR (1) FR2371583A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475143A1 (en) * 1980-02-02 1981-08-07 Lucas Industries Ltd FUEL INJECTOR
US4706887A (en) * 1983-05-19 1987-11-17 Lucas Industries Public Limited Company Fuel injection nozzles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475143A1 (en) * 1980-02-02 1981-08-07 Lucas Industries Ltd FUEL INJECTOR
US4706887A (en) * 1983-05-19 1987-11-17 Lucas Industries Public Limited Company Fuel injection nozzles

Also Published As

Publication number Publication date
ES464286A1 (en) 1978-07-01

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Legal Events

Date Code Title Description
ST Notification of lapse