FR2292873A1 - Fuel injector pump delivery valve - relieves pressure after delivery to assist injector valve return - Google Patents

Fuel injector pump delivery valve - relieves pressure after delivery to assist injector valve return

Info

Publication number
FR2292873A1
FR2292873A1 FR7536511A FR7536511A FR2292873A1 FR 2292873 A1 FR2292873 A1 FR 2292873A1 FR 7536511 A FR7536511 A FR 7536511A FR 7536511 A FR7536511 A FR 7536511A FR 2292873 A1 FR2292873 A1 FR 2292873A1
Authority
FR
France
Prior art keywords
delivery
injector
valve
bore
hollow
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Withdrawn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
FR7536511A
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.)
Pilkington Group Ltd
Original Assignee
Pilkington Brothers 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 Pilkington Brothers Ltd filed Critical Pilkington Brothers Ltd
Publication of FR2292873A1 publication Critical patent/FR2292873A1/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Withdrawn legal-status Critical Current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
    • 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

Abstract

The delivery valve is fitted between the injector pump outlet and the injector valves and consists of a bore (16) whose one end forms a stop (17) for a hollow cylindrical unit (19) and joins the pump chamber. Between the ends of the bore an outlet (18) leads to the distributor part of the pump. The hollow unit has ribs (20) extending along its outer periphery which contact the bore inner wall and form a fuel channel. The hollow unit is pressed against the stop (17) by a spring (21) coiled around a conical abutment (23) which passes into the hollow unit. A piston (24) fitted inside the hollow unit, uncovers a bore (25) in the side of the hollow unit, when subjected to pressure from the pump chamber, allowing fuel to pass via the ribs (20) to the distributor outlet (18). After delivery the spring (21) snaps the hollow cylinder (19) back against the stop (17) and pressure from the injector forces the piston (24) back to return some of the fuel to the pump chamber.
FR7536511A 1974-11-29 1975-11-28 Fuel injector pump delivery valve - relieves pressure after delivery to assist injector valve return Withdrawn FR2292873A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5171474 1974-11-29

Publications (1)

Publication Number Publication Date
FR2292873A1 true FR2292873A1 (en) 1976-06-25

Family

ID=10461098

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7536511A Withdrawn FR2292873A1 (en) 1974-11-29 1975-11-28 Fuel injector pump delivery valve - relieves pressure after delivery to assist injector valve return

Country Status (7)

Country Link
JP (1) JPS5177720A (en)
BR (1) BR7507831A (en)
DE (1) DE2553545A1 (en)
ES (1) ES443000A1 (en)
FR (1) FR2292873A1 (en)
IT (1) IT1049546B (en)
ZA (1) ZA757035B (en)

Also Published As

Publication number Publication date
IT1049546B (en) 1981-02-10
ZA757035B (en) 1976-10-27
JPS5177720A (en) 1976-07-06
DE2553545A1 (en) 1976-08-12
ES443000A1 (en) 1977-04-01
BR7507831A (en) 1976-08-10

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Legal Events

Date Code Title Description
RE Withdrawal of published application