WO2002048537A1 - Plunger pump of fuel injection pump - Google Patents

Plunger pump of fuel injection pump Download PDF

Info

Publication number
WO2002048537A1
WO2002048537A1 PCT/JP2001/010812 JP0110812W WO0248537A1 WO 2002048537 A1 WO2002048537 A1 WO 2002048537A1 JP 0110812 W JP0110812 W JP 0110812W WO 0248537 A1 WO0248537 A1 WO 0248537A1
Authority
WO
WIPO (PCT)
Prior art keywords
lead
plunger
fuel
main
port
Prior art date
Application number
PCT/JP2001/010812
Other languages
French (fr)
Japanese (ja)
Inventor
Masamichi Tanaka
Satoshi Hattori
Junichi Samo
Tohru Ogawa
Original Assignee
Yanmar 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
Priority claimed from JP2000379245A external-priority patent/JP2002180929A/en
Priority claimed from JP2000379246A external-priority patent/JP2002180930A/en
Application filed by Yanmar Co., Ltd. filed Critical Yanmar Co., Ltd.
Publication of WO2002048537A1 publication Critical patent/WO2002048537A1/en

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
    • F02M41/02—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements
    • F02M41/06—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/005—Arrangements of fuel feed-pumps with respect to fuel injection apparatus
    • 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

A plunger pump applied to a fuel injection pump, desirably, to a distributor type fuel injection pump (1), wherein a main port (31) for sucking and discharging fuel and a sub port (32) having a diameter smaller than that of the main port (31) and used exclusively for overflow are formed in a plunger barrel (17), an upper main lead (36) functioning to start the force-feeding of fuel at a high speed is formed, as a lead for communication with the main port (31), at the top end part of a plunger (7), a lower main lead (35) functioning to end the force-feeding of fuel is formed on the underside of the upper main lead (36), an upper sub lead (37) functioning to start the force-feeding of fuel at a low speed is formed, as a lead for communication with the sub port (32), at the top end part of the plunger (7), and lead angles generally identical to each other are formed for the upper main lead (36) and the upper sub lead (37).
PCT/JP2001/010812 2000-12-13 2001-12-10 Plunger pump of fuel injection pump WO2002048537A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2000-379245 2000-12-13
JP2000379245A JP2002180929A (en) 2000-12-13 2000-12-13 Structure of fuel injection pump
JP2000379246A JP2002180930A (en) 2000-12-13 2000-12-13 Structure of fuel injection pump
JP2000-379246 2000-12-13

Publications (1)

Publication Number Publication Date
WO2002048537A1 true WO2002048537A1 (en) 2002-06-20

Family

ID=26605774

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/010812 WO2002048537A1 (en) 2000-12-13 2001-12-10 Plunger pump of fuel injection pump

Country Status (1)

Country Link
WO (1) WO2002048537A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4853116A (en) * 1971-11-04 1973-07-26
JPS56145666U (en) * 1980-03-31 1981-11-02
JPS61159665U (en) * 1985-03-26 1986-10-03
JPH0532768U (en) * 1991-10-04 1993-04-30 いすゞ自動車株式会社 Fuel injection pump plunger
JPH0674129A (en) * 1992-08-27 1994-03-15 Yanmar Diesel Engine Co Ltd Fuel injection pump
JPH0693939A (en) * 1992-09-08 1994-04-05 Zexel Corp Fuel injection pump
EP0665373A1 (en) * 1993-12-28 1995-08-02 Zexel Corporation Fuel injection pump
US5638793A (en) * 1994-12-09 1997-06-17 Robert Bosch Gmbh Fuel-injection pump for internal-combustion engines
JP2000234529A (en) * 1999-02-15 2000-08-29 Yanmar Diesel Engine Co Ltd Fuel injection timing control structure for fuel injection pump

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4853116A (en) * 1971-11-04 1973-07-26
JPS56145666U (en) * 1980-03-31 1981-11-02
JPS61159665U (en) * 1985-03-26 1986-10-03
JPH0532768U (en) * 1991-10-04 1993-04-30 いすゞ自動車株式会社 Fuel injection pump plunger
JPH0674129A (en) * 1992-08-27 1994-03-15 Yanmar Diesel Engine Co Ltd Fuel injection pump
JPH0693939A (en) * 1992-09-08 1994-04-05 Zexel Corp Fuel injection pump
EP0665373A1 (en) * 1993-12-28 1995-08-02 Zexel Corporation Fuel injection pump
US5638793A (en) * 1994-12-09 1997-06-17 Robert Bosch Gmbh Fuel-injection pump for internal-combustion engines
JP2000234529A (en) * 1999-02-15 2000-08-29 Yanmar Diesel Engine Co Ltd Fuel injection timing control structure for fuel injection pump

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