EP1277952A3 - Injector with inwardly opening valves arranged one behind the other - Google Patents

Injector with inwardly opening valves arranged one behind the other Download PDF

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Publication number
EP1277952A3
EP1277952A3 EP02014393A EP02014393A EP1277952A3 EP 1277952 A3 EP1277952 A3 EP 1277952A3 EP 02014393 A EP02014393 A EP 02014393A EP 02014393 A EP02014393 A EP 02014393A EP 1277952 A3 EP1277952 A3 EP 1277952A3
Authority
EP
European Patent Office
Prior art keywords
injector
behind
valves
valve
opening valves
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
EP02014393A
Other languages
German (de)
French (fr)
Other versions
EP1277952A2 (en
EP1277952B1 (en
Inventor
Nestor Rodriguez-Amaya
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 EP1277952A2 publication Critical patent/EP1277952A2/en
Publication of EP1277952A3 publication Critical patent/EP1277952A3/en
Application granted granted Critical
Publication of EP1277952B1 publication Critical patent/EP1277952B1/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
    • 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
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable 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
    • 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
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means

Abstract

Die Erfindung bezieht sich auf einen Kraftstoffinjektor für Kraftstoffeinspritzsysteme an Brennkraftmaschinen. Der Injektor umfasst ein Gehäuse (2, 3), in welchem hintereinanderliegend angeordnete Ventile (8, 24) aufgenommen sind. Eines der Ventile (8, 24) wird über einen dem Injektor zugeordneten Aktor (4) betätigt. Jedem der Ventile (8, 24) ist ein aufsteuerbarer Steuerraum (13, 26) mit jeweils einem Zulauf (23, 20) zugeordnet. Die Ventile (8, 24) sind als nach innen öffnende Ventile ausgebildet. Das über den Aktor (4) betätigbare der Ventile (8, 24) betätigt das andere der Ventile (8, 24), das über ein erstes Federelement (19) vorgespannt ist, über ein Federpaket (37, 38).

Figure 00000001
The invention relates to a fuel injector for fuel injection systems on internal combustion engines. The injector comprises a housing (2, 3) in which valves (8, 24) arranged one behind the other are accommodated. One of the valves (8, 24) is actuated via an actuator (4) assigned to the injector. Each valve (8, 24) is assigned a controllable control chamber (13, 26), each with an inlet (23, 20). The valves (8, 24) are designed as inward opening valves. The valve (8, 24) which can be actuated by the actuator (4) actuates the other of the valve (8, 24), which is pretensioned by a first spring element (19), by means of a spring assembly (37, 38).
Figure 00000001
EP02014393A 2001-07-16 2002-06-28 Injector with inwardly opening valves arranged one behind the other Expired - Lifetime EP1277952B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10134529A DE10134529C2 (en) 2001-07-16 2001-07-16 Injector with cascaded, inward opening valves
DE10134529 2001-07-16

Publications (3)

Publication Number Publication Date
EP1277952A2 EP1277952A2 (en) 2003-01-22
EP1277952A3 true EP1277952A3 (en) 2004-01-28
EP1277952B1 EP1277952B1 (en) 2005-05-04

Family

ID=7691954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02014393A Expired - Lifetime EP1277952B1 (en) 2001-07-16 2002-06-28 Injector with inwardly opening valves arranged one behind the other

Country Status (3)

Country Link
US (1) US6908044B2 (en)
EP (1) EP1277952B1 (en)
DE (2) DE10134529C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060202053A1 (en) * 2005-03-09 2006-09-14 Gibson Dennis H Control valve assembly and fuel injector using same
US7737155B2 (en) * 2005-05-17 2010-06-15 Schering Corporation Nitrogen-containing heterocyclic compounds and methods of use thereof
DE102006039266B4 (en) * 2006-08-22 2015-11-26 Volkswagen Ag 4/2-way valve
DE102007009167A1 (en) * 2007-02-26 2008-08-28 Robert Bosch Gmbh Multi-way valve
DE102010039048A1 (en) * 2010-08-09 2012-02-09 Robert Bosch Gmbh Injector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823549A2 (en) * 1996-08-06 1998-02-11 Lucas Industries Public Limited Company Injector
DE19956598A1 (en) * 1999-11-25 2001-06-13 Bosch Gmbh Robert Valve for controlling liquids
DE10062896A1 (en) * 2000-12-16 2002-06-20 Bosch Gmbh Robert Fuel injection device for an internal combustion engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071197A (en) * 1976-02-19 1978-01-31 Caterpillar Tractor Co. Fuel injector with self-centering valve
US4527737A (en) * 1983-09-09 1985-07-09 General Motors Corporation Electromagnetic unit fuel injector with differential valve
US5241935A (en) * 1988-02-03 1993-09-07 Servojet Electronic Systems, Ltd. Accumulator fuel injection system
US4986472A (en) * 1989-09-05 1991-01-22 Cummins Engine Company, Inc. High pressure unit fuel injector with timing chamber pressure control
US5121730A (en) * 1991-10-11 1992-06-16 Caterpillar Inc. Methods of conditioning fluid in an electronically-controlled unit injector for starting
DE4434892A1 (en) * 1994-09-29 1996-04-11 Siemens Ag Injector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823549A2 (en) * 1996-08-06 1998-02-11 Lucas Industries Public Limited Company Injector
DE19956598A1 (en) * 1999-11-25 2001-06-13 Bosch Gmbh Robert Valve for controlling liquids
DE10062896A1 (en) * 2000-12-16 2002-06-20 Bosch Gmbh Robert Fuel injection device for an internal combustion engine

Also Published As

Publication number Publication date
EP1277952A2 (en) 2003-01-22
US20030019956A1 (en) 2003-01-30
EP1277952B1 (en) 2005-05-04
DE10134529A1 (en) 2003-02-13
DE50202972D1 (en) 2005-06-09
DE10134529C2 (en) 2003-07-03
US6908044B2 (en) 2005-06-21

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