GB634085A - Improvements in piston pumps and in particular fuel injection pumps - Google Patents

Improvements in piston pumps and in particular fuel injection pumps

Info

Publication number
GB634085A
GB634085A GB14997/46A GB1499746A GB634085A GB 634085 A GB634085 A GB 634085A GB 14997/46 A GB14997/46 A GB 14997/46A GB 1499746 A GB1499746 A GB 1499746A GB 634085 A GB634085 A GB 634085A
Authority
GB
United Kingdom
Prior art keywords
fuel
pump
piston
pumps
chamber
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
GB14997/46A
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.)
Precision Mecanique SA
Original Assignee
Precision Mecanique SA
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 Precision Mecanique SA filed Critical Precision Mecanique SA
Publication of GB634085A publication Critical patent/GB634085A/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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/06—Pumps peculiar thereto
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/13—Special devices for making an explosive mixture; Fuel pumps
    • F02M2700/1317—Fuel pumpo for internal combustion engines
    • F02M2700/137—Fuel pump with control of fuel outlet of pumping chamber to delivery pipe

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

634,085. Reciprocating pumps. PRECISION MECANIQUE. May 17, 1946, No. 14997. Convention date, July 18. 1941. [Class 102(i)] In a pump, suitable for a fuel-injection pump, a member 7 is fitted to the end of the pump cylinder and has throttle passages 8, 14 in staggered relationship. When the pump piston 1 is adjusted to suit idling speeds, and the speed increases, then the member 7 is raised until the lower end of the passage 8 is cut off and the member 7 is moved further into the chamber 10. On the next delivery stroke the amount of fuel displaced from chamber 10 has to be made up and the fuel delivered past the valve 5 is decreased as the speed rises. When the piston 1 is set to give larger amounts of fuel the member 7 operates similarly but the groove 14 comes into operation and provides a further similar operation so that two flat portions occur in the curve showing the relationship between fuel supply and engine speed. In a modification, the throttle conduit may be arranged in the cylinder and the member 7 loaded by springs that come into operation successively. Specification 523,163 is referred to.
GB14997/46A 1941-07-18 1946-05-17 Improvements in piston pumps and in particular fuel injection pumps Expired GB634085A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR634085X 1941-07-18

Publications (1)

Publication Number Publication Date
GB634085A true GB634085A (en) 1950-03-15

Family

ID=8993340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14997/46A Expired GB634085A (en) 1941-07-18 1946-05-17 Improvements in piston pumps and in particular fuel injection pumps

Country Status (1)

Country Link
GB (1) GB634085A (en)

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