EP1323919A3 - Fuel pump - Google Patents

Fuel pump Download PDF

Info

Publication number
EP1323919A3
EP1323919A3 EP02026932A EP02026932A EP1323919A3 EP 1323919 A3 EP1323919 A3 EP 1323919A3 EP 02026932 A EP02026932 A EP 02026932A EP 02026932 A EP02026932 A EP 02026932A EP 1323919 A3 EP1323919 A3 EP 1323919A3
Authority
EP
European Patent Office
Prior art keywords
cylinder
fuel
plunger
pressure chamber
seal member
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
EP02026932A
Other languages
German (de)
French (fr)
Other versions
EP1323919A2 (en
EP1323919B1 (en
Inventor
Naoki Yamamoto
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of EP1323919A2 publication Critical patent/EP1323919A2/en
Publication of EP1323919A3 publication Critical patent/EP1323919A3/en
Application granted granted Critical
Publication of EP1323919B1 publication Critical patent/EP1323919B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/0265—Pumps feeding common rails
    • 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
    • F02M59/366—Valves being actuated electrically
    • 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
    • F02M59/442—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 means preventing fuel leakage around pump plunger, e.g. fluid barriers
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/04—Draining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A fuel pressure pump has a cylinder. A plunger is slidably received in the cylinder to define at one end of the cylinder a pressure chamber. The pressure chamber presses a fuel therein when the plunger moves in a direction to reduce a volume of the pressure chamber. A fuel supply passage is provided through which the fuel is led to the pressure chamber. A seal member is provided at a position other than a position where an inner surface of the cylinder and an outer surface of the plunger are slidably engaged. The seal member functions to make a hermetical sealing between the inner surface of the cylinder and the outer surface of the plunger. A first fuel holding space is defined by the inner surface of the cylinder, the outer surface of the plunger and the seal member. A first connection passage is provided that connects the first fuel holding space and the fuel supply passage.
EP20020026932 2001-12-28 2002-12-03 Fuel pump Expired - Lifetime EP1323919B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001400183A JP3815324B2 (en) 2001-12-28 2001-12-28 Fuel pressurizing pump for internal combustion engines
JP2001400183 2001-12-28

Publications (3)

Publication Number Publication Date
EP1323919A2 EP1323919A2 (en) 2003-07-02
EP1323919A3 true EP1323919A3 (en) 2005-08-17
EP1323919B1 EP1323919B1 (en) 2009-11-04

Family

ID=19189581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020026932 Expired - Lifetime EP1323919B1 (en) 2001-12-28 2002-12-03 Fuel pump

Country Status (3)

Country Link
EP (1) EP1323919B1 (en)
JP (1) JP3815324B2 (en)
DE (1) DE60234240D1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1517039A1 (en) * 2003-09-22 2005-03-23 Delphi Technologies, Inc. Pump assembly
JP4625789B2 (en) * 2006-07-20 2011-02-02 日立オートモティブシステムズ株式会社 High pressure fuel pump
SE530565C2 (en) * 2006-11-10 2008-07-08 Scania Cv Ab A fuel pump device
DE102007019909B4 (en) * 2007-04-27 2019-07-11 Man Energy Solutions Se Fuel pump with leakage grooves
JP4655122B2 (en) * 2008-08-07 2011-03-23 株式会社デンソー High-pressure pump fuel introduction method
JP4736142B2 (en) * 2009-02-18 2011-07-27 株式会社デンソー High pressure pump
US8308450B2 (en) * 2009-03-05 2012-11-13 Cummins Intellectual Properties, Inc. High pressure fuel pump with parallel cooling fuel flow
EP2287462B1 (en) * 2009-07-08 2012-04-18 Delphi Technologies Holding S.à.r.l. A pump unit
US8678779B2 (en) * 2010-03-05 2014-03-25 Hitachi, Ltd. Fuel pump
JP5071525B2 (en) * 2010-06-09 2012-11-14 株式会社デンソー High pressure pump
DE102011007781A1 (en) * 2011-04-20 2012-10-25 Continental Automotive Gmbh Submerged pump for conveying fuel into engine, has inlet valve and discharge valve for connecting pumping chamber with inlet and outlet, respectively, where inlet valve is designed as digitally controllable valve or magnetic valve
JP6098481B2 (en) * 2013-11-12 2017-03-22 株式会社デンソー High pressure pump
DE102014014475A1 (en) * 2014-09-27 2016-03-31 Man Diesel & Turbo Se Fuel pump
DE102014014344A1 (en) * 2014-09-27 2016-03-31 Man Diesel & Turbo Se Fuel pump
IT201600106480A1 (en) * 2016-10-21 2018-04-21 Bosch Gmbh Robert HIGH PRESSURE PUMP FOR FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE AND PUMP CONTROL METHOD
CN106499558A (en) * 2017-01-04 2017-03-15 北京亚新科天纬油泵油嘴股份有限公司 A kind of plunger matching parts of anti-leak oil-stain-preventing and apply its injection pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2372694A (en) * 1942-02-04 1945-04-03 Reconstruction Finance Corp High-pressure fluid pump
US5567134A (en) * 1994-06-24 1996-10-22 Nippondenso Co., Ltd. High-pressure fuel-feed pump
DE10039974A1 (en) * 1999-08-19 2001-02-22 Scania Cv Ab Fuel pump for diesel engines comprises a piston sealing unit provided with a channel which is joined to the fuel return line

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000110685A (en) 1998-10-08 2000-04-18 Toyota Motor Corp High pressure fuel feeding device for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2372694A (en) * 1942-02-04 1945-04-03 Reconstruction Finance Corp High-pressure fluid pump
US5567134A (en) * 1994-06-24 1996-10-22 Nippondenso Co., Ltd. High-pressure fuel-feed pump
DE10039974A1 (en) * 1999-08-19 2001-02-22 Scania Cv Ab Fuel pump for diesel engines comprises a piston sealing unit provided with a channel which is joined to the fuel return line

Also Published As

Publication number Publication date
JP3815324B2 (en) 2006-08-30
DE60234240D1 (en) 2009-12-17
EP1323919A2 (en) 2003-07-02
EP1323919B1 (en) 2009-11-04
JP2003201934A (en) 2003-07-18

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