WO2009016774A1 - Pompe d'injection de carburant - Google Patents

Pompe d'injection de carburant Download PDF

Info

Publication number
WO2009016774A1
WO2009016774A1 PCT/JP2007/072617 JP2007072617W WO2009016774A1 WO 2009016774 A1 WO2009016774 A1 WO 2009016774A1 JP 2007072617 W JP2007072617 W JP 2007072617W WO 2009016774 A1 WO2009016774 A1 WO 2009016774A1
Authority
WO
WIPO (PCT)
Prior art keywords
ports
main
fuel
pressurizing chamber
communicating
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.)
Ceased
Application number
PCT/JP2007/072617
Other languages
English (en)
Japanese (ja)
Inventor
Kazuhiro Onuma
Tsuyohi Kodama
Hiroyuki Yano
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.)
Bosch Corp
Original Assignee
Bosch Corp
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 Bosch Corp filed Critical Bosch Corp
Publication of WO2009016774A1 publication Critical patent/WO2009016774A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F02M59/20—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
    • 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
    • F02M45/066—Having specially arranged spill port and 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

L'invention concerne une pompe d'injection de carburant utilisant l'effet de pré-écoulement, selon laquelle un rendement d'aspiration d'un carburant dans une chambre de pressurisation et un rendement de décharge d'un carburant à partir de la chambre de pressurisation sont améliorés, et sa résistance est empêchée de diminuer par la conservation de l'épaisseur de paroi entre l'orifice principal et un sous-orifice. Les orifices d'aspiration et de décharge comprennent plusieurs orifices principaux, ayant des diamètres relativement importants, et au moins un sous-orifice, ayant un diamètre relativement plus petit. Un piston a plusieurs passages de carburant verticaux communiquant avec la chambre de pressurisation et plusieurs canaux inclinés communiquant avec les passages de carburant verticaux et également capables de communiquer avec les orifices principaux. Les sous-orifices sont agencés autour des orifices principaux tout en étant déplacés de façon à être écartés par rapport aux positions des orifices principaux dans la direction de rotation axiale du piston.
PCT/JP2007/072617 2007-07-27 2007-11-22 Pompe d'injection de carburant Ceased WO2009016774A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007196241 2007-07-27
JP2007-196241 2007-07-27

Publications (1)

Publication Number Publication Date
WO2009016774A1 true WO2009016774A1 (fr) 2009-02-05

Family

ID=40304019

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/072617 Ceased WO2009016774A1 (fr) 2007-07-27 2007-11-22 Pompe d'injection de carburant

Country Status (1)

Country Link
WO (1) WO2009016774A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010127613A1 (fr) * 2009-05-04 2010-11-11 Hong Xuanmin Piston de pompe à carburant en ligne pour moteur diesel

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56145666U (fr) * 1980-03-31 1981-11-02
JPS57129969U (fr) * 1981-02-09 1982-08-13
JPS57212364A (en) * 1981-06-22 1982-12-27 Mitsubishi Heavy Ind Ltd Fuel injection pump
JPS5965978U (ja) * 1982-10-27 1984-05-02 日野自動車株式会社 デイ−ゼル機関用燃料噴射ポンプのスピルポ−ト部
JPS62138862U (fr) * 1986-02-26 1987-09-01
JPH0183169U (fr) * 1987-11-26 1989-06-02
JPH0617720A (ja) * 1992-03-05 1994-01-25 Robert Bosch Gmbh 内燃機関用の燃料噴射ポンプ
JPH08210222A (ja) * 1994-11-22 1996-08-20 Robert Bosch Gmbh 燃料噴射ポンプ

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56145666U (fr) * 1980-03-31 1981-11-02
JPS57129969U (fr) * 1981-02-09 1982-08-13
JPS57212364A (en) * 1981-06-22 1982-12-27 Mitsubishi Heavy Ind Ltd Fuel injection pump
JPS5965978U (ja) * 1982-10-27 1984-05-02 日野自動車株式会社 デイ−ゼル機関用燃料噴射ポンプのスピルポ−ト部
JPS62138862U (fr) * 1986-02-26 1987-09-01
JPH0183169U (fr) * 1987-11-26 1989-06-02
JPH0617720A (ja) * 1992-03-05 1994-01-25 Robert Bosch Gmbh 内燃機関用の燃料噴射ポンプ
JPH08210222A (ja) * 1994-11-22 1996-08-20 Robert Bosch Gmbh 燃料噴射ポンプ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010127613A1 (fr) * 2009-05-04 2010-11-11 Hong Xuanmin Piston de pompe à carburant en ligne pour moteur diesel

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