ES341710A1 - Liquid fuel pumping apparatus - Google Patents

Liquid fuel pumping apparatus

Info

Publication number
ES341710A1
ES341710A1 ES341710A ES341710A ES341710A1 ES 341710 A1 ES341710 A1 ES 341710A1 ES 341710 A ES341710 A ES 341710A ES 341710 A ES341710 A ES 341710A ES 341710 A1 ES341710 A1 ES 341710A1
Authority
ES
Spain
Prior art keywords
retraction
broken
communication
point
delivery
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
Application number
ES341710A
Other languages
Spanish (es)
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.)
CAV Ltd
Original Assignee
CAV 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 CAV Ltd filed Critical CAV Ltd
Publication of ES341710A1 publication Critical patent/ES341710A1/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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/14—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons
    • F02M41/1405—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis
    • 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

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

In a fuel injection pump having a cam actuated plunger and a combined inlet, outlet and distributing valve, the cam is so shaped that after an injection stroke and after communication of the delivery passage with an outlet port has been broken and before the inlet passage opens to the inlet port the plunger is allowed to move a predetermined extent in the direction in which it moves during a filling stroke, the plunger then being held against movement in said direction for a short period before being allowed to move its fullest extent. In one embodiment in which the communication is broken by rotation of the distributor, the cam profile is as shown in Fig.4 after completion of delivery it allows retraction and a dwell to point B at which the communication is broken, followed by retraction, dwell and retraction to point C at which the inlet opens. In a second embodiment in which communication is broken by means of a shouldered valve in the delivery port, the cam profile is as shown in Fig. 5 after completion of delivery it allows retraction to point E, at which the shouldered valve closes, retraction, dwell and retraction to point F at which the inlet opens. The delivery passage and outlet port may be disconnected at any point between E and G. The arrangement is such that the fuel line is first relieved of pressure and after communication between the delivery passage and outlet port has been broken, the pump passages are relieved of pressure.
ES341710A 1966-05-31 1967-05-29 Liquid fuel pumping apparatus Expired ES341710A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24085/66A GB1173317A (en) 1966-05-31 1966-05-31 Liquid fuel injection pumping apparatus

Publications (1)

Publication Number Publication Date
ES341710A1 true ES341710A1 (en) 1968-07-16

Family

ID=10206127

Family Applications (1)

Application Number Title Priority Date Filing Date
ES341710A Expired ES341710A1 (en) 1966-05-31 1967-05-29 Liquid fuel pumping apparatus

Country Status (4)

Country Link
US (1) US3446148A (en)
DE (1) DE1576504A1 (en)
ES (1) ES341710A1 (en)
GB (1) GB1173317A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2299514A1 (en) * 1975-01-31 1976-08-27 Roto Diesel Sa PO

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961004A (en) * 1954-07-17 1960-11-22 Bosch Gmbh Robert Flow control for injection pumps
US2946292A (en) * 1957-04-10 1960-07-26 Cav Ltd Liquid fuel pumps for internal combustion engines
DE1267470B (en) * 1964-02-11 1968-05-02 Cav Ltd Fuel injection pump with distributor rotary valve
US3363568A (en) * 1965-12-07 1968-01-16 Cav Ltd Liquid fuel pumping apparatus

Also Published As

Publication number Publication date
DE1576504A1 (en) 1970-02-12
US3446148A (en) 1969-05-27
GB1173317A (en) 1969-12-10

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19860221