FR2270453A1 - Fuel injector pump - with delivery rate dependent on plunger position with respect to elliptical fuel return opening - Google Patents

Fuel injector pump - with delivery rate dependent on plunger position with respect to elliptical fuel return opening

Info

Publication number
FR2270453A1
FR2270453A1 FR7416273A FR7416273A FR2270453A1 FR 2270453 A1 FR2270453 A1 FR 2270453A1 FR 7416273 A FR7416273 A FR 7416273A FR 7416273 A FR7416273 A FR 7416273A FR 2270453 A1 FR2270453 A1 FR 2270453A1
Authority
FR
France
Prior art keywords
plunger
fuel
boring
elliptical
overspill
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
FR7416273A
Other languages
French (fr)
Other versions
FR2270453B1 (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.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine Co 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 Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to FR7416273A priority Critical patent/FR2270453A1/en
Publication of FR2270453A1 publication Critical patent/FR2270453A1/en
Application granted granted Critical
Publication of FR2270453B1 publication Critical patent/FR2270453B1/fr
Granted 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
    • F02M59/48—Assembling; Disassembling; Replacing
    • F02M59/485—Means for fixing delivery valve casing and barrel to each other or to pump casing
    • 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
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
    • F02M59/265—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders characterised by the arrangement or form of spill port of spill contour on the piston

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 pump housing (1) contains a boring (2) in which a plunger (3) is able to reciprocate and at the same time turn. A fuel delivery chamber (15) with a delivery pipe union at its upper end and a spring loaded non return valve at its lower end is screwed into the housing above the plunger boring and amplifies fuel impulses. The cylinder boring (2) has inlet and overspill openings (8, 9) in communication with the pump fuel reservoir. The plunger has an axial boring (11) extending from its crown (10) and opening out at an annular regulator groove (12) formed in its outer surface and at right angles to the plunger axis (0). The external annular regulator groove is in communication with the overspill channel (9) when the plunger starts its delivery to produce a gradual pressure. Since the overspill channel opening is elliptical, four sections are available to regulate the return flow when the plunger is turned.
FR7416273A 1974-05-10 1974-05-10 Fuel injector pump - with delivery rate dependent on plunger position with respect to elliptical fuel return opening Granted FR2270453A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7416273A FR2270453A1 (en) 1974-05-10 1974-05-10 Fuel injector pump - with delivery rate dependent on plunger position with respect to elliptical fuel return opening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7416273A FR2270453A1 (en) 1974-05-10 1974-05-10 Fuel injector pump - with delivery rate dependent on plunger position with respect to elliptical fuel return opening

Publications (2)

Publication Number Publication Date
FR2270453A1 true FR2270453A1 (en) 1975-12-05
FR2270453B1 FR2270453B1 (en) 1979-08-03

Family

ID=9138692

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7416273A Granted FR2270453A1 (en) 1974-05-10 1974-05-10 Fuel injector pump - with delivery rate dependent on plunger position with respect to elliptical fuel return opening

Country Status (1)

Country Link
FR (1) FR2270453A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792971A1 (en) * 1999-04-29 2000-11-03 Bosch Gmbh Robert HIGH PRESSURE FUEL INJECTION PUMP IN AN FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792971A1 (en) * 1999-04-29 2000-11-03 Bosch Gmbh Robert HIGH PRESSURE FUEL INJECTION PUMP IN AN FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
FR2270453B1 (en) 1979-08-03

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Legal Events

Date Code Title Description
ST Notification of lapse