EP1908953A3 - Fuel injection device - Google Patents

Fuel injection device Download PDF

Info

Publication number
EP1908953A3
EP1908953A3 EP07114426A EP07114426A EP1908953A3 EP 1908953 A3 EP1908953 A3 EP 1908953A3 EP 07114426 A EP07114426 A EP 07114426A EP 07114426 A EP07114426 A EP 07114426A EP 1908953 A3 EP1908953 A3 EP 1908953A3
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel injection
piston
booster
injection device
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
EP07114426A
Other languages
German (de)
French (fr)
Other versions
EP1908953A2 (en
EP1908953B1 (en
Inventor
Hans-Christoph Magel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1908953A2 publication Critical patent/EP1908953A2/en
Publication of EP1908953A3 publication Critical patent/EP1908953A3/en
Application granted granted Critical
Publication of EP1908953B1 publication Critical patent/EP1908953B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • F02M57/026—Construction details of pressure amplifiers, e.g. fuel passages or check valves arranged in the intensifier piston or head, particular diameter relationships, stop members, arrangement of ports or conduits
    • 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
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0045—Three-way valves
    • 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
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Materials For Photolithography (AREA)

Abstract

A pressure booster (19) for increasing the fuel injection pressure opposite the system pressure includes a booster main body (4), a hollow piston (20), and a plunger (21) coaxially disposed in the piston. A pressure boosting area (22) is defined between the piston and the plunger. The system pressure acts in the pressure boosting area and on the side opposite the hollow piston. The booster is included into a fuel injector (1).
EP07114426A 2006-10-05 2007-08-16 Fuel injection device Not-in-force EP1908953B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006047134A DE102006047134A1 (en) 2006-10-05 2006-10-05 Fuel injection system

Publications (3)

Publication Number Publication Date
EP1908953A2 EP1908953A2 (en) 2008-04-09
EP1908953A3 true EP1908953A3 (en) 2009-06-17
EP1908953B1 EP1908953B1 (en) 2011-01-19

Family

ID=38896948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07114426A Not-in-force EP1908953B1 (en) 2006-10-05 2007-08-16 Fuel injection device

Country Status (3)

Country Link
EP (1) EP1908953B1 (en)
AT (1) ATE496215T1 (en)
DE (2) DE102006047134A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122557B (en) * 2009-04-02 2012-03-30 Waertsilae Finland Oy Fuel injection arrangement for a piston engine
WO2014193356A1 (en) * 2013-05-29 2014-12-04 International Engine Intellectual Property Company, Llc Fuel injector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10218635A1 (en) * 2001-05-17 2002-11-28 Bosch Gmbh Robert Fuel injection device for internal combustion engine has closure pressure chamber forming working chamber with another chamber and all parts of working chamber are interconnected
WO2004040117A1 (en) * 2002-10-25 2004-05-13 Robert Bosch Gmbh Fuel injection system for internal combustion engines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10218635A1 (en) * 2001-05-17 2002-11-28 Bosch Gmbh Robert Fuel injection device for internal combustion engine has closure pressure chamber forming working chamber with another chamber and all parts of working chamber are interconnected
WO2004040117A1 (en) * 2002-10-25 2004-05-13 Robert Bosch Gmbh Fuel injection system for internal combustion engines

Also Published As

Publication number Publication date
EP1908953A2 (en) 2008-04-09
ATE496215T1 (en) 2011-02-15
EP1908953B1 (en) 2011-01-19
DE502007006293D1 (en) 2011-03-03
DE102006047134A1 (en) 2008-04-10

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