ATE281598T1 - INJECTOR - Google Patents

INJECTOR

Info

Publication number
ATE281598T1
ATE281598T1 AT00958238T AT00958238T ATE281598T1 AT E281598 T1 ATE281598 T1 AT E281598T1 AT 00958238 T AT00958238 T AT 00958238T AT 00958238 T AT00958238 T AT 00958238T AT E281598 T1 ATE281598 T1 AT E281598T1
Authority
AT
Austria
Prior art keywords
valve body
injector
control
section
forms
Prior art date
Application number
AT00958238T
Other languages
German (de)
Inventor
Friedrich Boecking
Original Assignee
Bosch Gmbh Robert
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 Gmbh Robert filed Critical Bosch Gmbh Robert
Application granted granted Critical
Publication of ATE281598T1 publication Critical patent/ATE281598T1/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
    • 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
    • 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
    • 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
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • F02M63/0042—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing combined with valve seats of the lift valve type
    • 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

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)
  • Glass Compositions (AREA)
  • Disintegrating Or Milling (AREA)
  • Jellies, Jams, And Syrups (AREA)

Abstract

The invention relates to a injector (18), especially for controlling the injection of fuel into a combustion chamber of an internal combustion engine. The injector has a closing member (30) which is subjected to the hydraulic action of an actuating device (44, 52, 54). Said actuating device has a valve body (54) which is movably guided in a control channel (44) and which is actuated by a piezoelectric actuator (52). The valve body interacts with two control cross-sections (68, 70) located one behind the other, in order to control the pressure means connections between a high pressure supply channel (24) and a discharge channel (46). The first control cross-section (68) in the direction of actuation of the valve body (54) therefor forms a seat valve (51) with said valve body (54) and the second control cross-section (70) in the direction of actuation forms a sliding valve (71). A throttle gap (72) also forms between the valve body (54) and the wall of the second control cross-section (70) when said valve body is extended out to the maximum. This throttle gap determines the pressure ratios in the injector (18) and therefor the injection quantity per time unit.
AT00958238T 1999-08-20 2000-08-10 INJECTOR ATE281598T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19939445A DE19939445A1 (en) 1999-08-20 1999-08-20 Injector
PCT/DE2000/002675 WO2001014715A1 (en) 1999-08-20 2000-08-10 Injector

Publications (1)

Publication Number Publication Date
ATE281598T1 true ATE281598T1 (en) 2004-11-15

Family

ID=7918971

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00958238T ATE281598T1 (en) 1999-08-20 2000-08-10 INJECTOR

Country Status (7)

Country Link
EP (1) EP1210512B1 (en)
JP (1) JP2003507641A (en)
KR (1) KR20020025982A (en)
AT (1) ATE281598T1 (en)
CZ (1) CZ2002608A3 (en)
DE (2) DE19939445A1 (en)
WO (1) WO2001014715A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10120157A1 (en) * 2001-04-25 2002-11-07 Bosch Gmbh Robert Fuel injector with throttle element integrated in the control valve
DE10160264A1 (en) * 2001-12-07 2003-06-18 Bosch Gmbh Robert Fuel injection device for internal combustion engine has smaller cross-section of connection to relief chamber exposed with increased injection valve element opening displacement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08158981A (en) * 1994-12-02 1996-06-18 Nippondenso Co Ltd Fuel injection device
US5680988A (en) * 1995-01-20 1997-10-28 Caterpillar Inc. Axial force indentation or protrusion for a reciprocating piston/barrel assembly
DE19624001A1 (en) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Fuel injection device for internal combustion engines
AUPO501897A0 (en) * 1997-02-10 1997-03-06 Invent Engineering P/L Hydraulically actuated electronic fuel injection system
DE19742073A1 (en) * 1997-09-24 1999-03-25 Bosch Gmbh Robert Fuel injection arrangement for internal combustion engines

Also Published As

Publication number Publication date
EP1210512A1 (en) 2002-06-05
KR20020025982A (en) 2002-04-04
CZ2002608A3 (en) 2003-06-18
WO2001014715A1 (en) 2001-03-01
JP2003507641A (en) 2003-02-25
EP1210512B1 (en) 2004-11-03
DE19939445A1 (en) 2001-03-01
DE50008529D1 (en) 2004-12-09

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee