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EP1584813A3 - Injector for combustion engine with a direct controlled nozzle needle - Google Patents

Injector for combustion engine with a direct controlled nozzle needle Download PDF

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Publication number
EP1584813A3
EP1584813A3 EP05100668A EP05100668A EP1584813A3 EP 1584813 A3 EP1584813 A3 EP 1584813A3 EP 05100668 A EP05100668 A EP 05100668A EP 05100668 A EP05100668 A EP 05100668A EP 1584813 A3 EP1584813 A3 EP 1584813A3
Authority
EP
European Patent Office
Prior art keywords
nozzle needle
pressure
switching valve
fuel injector
inner nozzle
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.)
Withdrawn
Application number
EP05100668A
Other languages
German (de)
French (fr)
Other versions
EP1584813A2 (en
Inventor
Achim Brenk
Martin Kropp
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 EP1584813A2 publication Critical patent/EP1584813A2/en
Publication of EP1584813A3 publication Critical patent/EP1584813A3/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • 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
    • 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
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0028—Valves characterised by the valve actuating means hydraulic
    • F02M63/0029—Valves characterised by the valve actuating means hydraulic using a pilot valve controlling a hydraulic chamber
    • 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
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
    • 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
    • F02M59/105—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 hydraulic drive
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • 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
    • 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
    • F02M63/0043—Two-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
    • 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

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)

Abstract

Es wird eine Kraftstoffeinspritzeinrichtung für Verbrennungsmaschinen mit einem von einer Kraftstoffhochdruckquelle (2) versorgbaren Kraftstoffinjektor (1) vorgeschlagen. Der Kraftstoffinjektor (1) weist ein Einspritzventil (9) mit dem Brennraum zuweisenden Einspritzdüsen (13, 14) auf, wobei den Einspritzdüsen (13, 14) eine innere Düsennadel (12) und eine koaxial dazu angeordnete äußere Düsennadel (11) zugeordnet ist, die druckabhängig ansteuerbar unterschiedliche Einspritzquerschnitte an den Einspritzdüsen (13, 14) freigeben bzw. verschließen. Die äußere Düsennadel (11) ist mit einer Druckfläche (21) einem Schließraum (20) zugeordnet. Zum Ansteuern der äußeren Düsennadel (11) ist ein erstes Schaltventil (7) vorgesehen, über das der Schließraum (20) mit einem Niederdruck-/Rücklaufsystem (88) verbindbar ist. Die innere Düsennadel (12) weist einen Steuerkolben (43) auf, der mit einer Druckfläche (52) in einen Steuerraum (53) weist. Zum Ansteuern der inneren Düsennadel (12) ist ein zweites Schaltventil (90) vorgesehen, über das der Steuerraum (53) mit dem Niederdruck-/Rücklaufsystem (88) verbindbar ist, so dass bei einer Aktivierung des zweiten Schaltventils (90) eine Druckentlastung des Steuerraums (53) erfolgt. Dadurch ist eine separate Ansteuerung der äußerer Düsennadel (11) und der innerer Düsennadel (12) möglich.

Figure imgaf001
A fuel injector for internal combustion engines with a fuel injector (1) which can be supplied by a high-pressure fuel source (2) is proposed. The fuel injector (1) has an injection valve (9) with injection nozzles (13, 14) facing the combustion space, wherein the injection nozzles (13, 14) are assigned an inner nozzle needle (12) and an outer nozzle needle (11) arranged coaxially therewith, the pressure-dependent controllable release different injection cross sections at the injection nozzles (13, 14) or close. The outer nozzle needle (11) is associated with a pressure surface (21) a closing space (20). For driving the outer nozzle needle (11) a first switching valve (7) is provided, via which the closing space (20) with a low pressure / return system (88) is connectable. The inner nozzle needle (12) has a control piston (43) which points with a pressure surface (52) into a control chamber (53). For driving the inner nozzle needle (12), a second switching valve (90) is provided, via which the control chamber (53) with the low pressure / return system (88) is connectable, so that upon activation of the second switching valve (90) a pressure relief of Control room (53) takes place. As a result, a separate control of the outer nozzle needle (11) and the inner nozzle needle (12) is possible.
Figure imgaf001
EP05100668A 2004-04-08 2005-02-01 Injector for combustion engine with a direct controlled nozzle needle Withdrawn EP1584813A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004017305 2004-04-08
DE102004017305A DE102004017305A1 (en) 2004-04-08 2004-04-08 Fuel injection device for internal combustion engines with directly controllable nozzle needles

Publications (2)

Publication Number Publication Date
EP1584813A2 EP1584813A2 (en) 2005-10-12
EP1584813A3 true EP1584813A3 (en) 2006-03-29

Family

ID=34895518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05100668A Withdrawn EP1584813A3 (en) 2004-04-08 2005-02-01 Injector for combustion engine with a direct controlled nozzle needle

Country Status (3)

Country Link
US (1) US20050224600A1 (en)
EP (1) EP1584813A3 (en)
DE (1) DE102004017305A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010760A1 (en) * 2004-03-05 2005-09-22 Robert Bosch Gmbh Fuel injection device for internal combustion engines with Nadelhubdämpfung
DE102004022267A1 (en) * 2004-05-06 2005-12-01 Robert Bosch Gmbh Method and device for shaping the injection pressure at a fuel injector
DE102004028521A1 (en) * 2004-06-11 2005-12-29 Robert Bosch Gmbh Fuel injector with multipart injection valve member and with pressure booster
JP4075894B2 (en) * 2004-09-24 2008-04-16 トヨタ自動車株式会社 Fuel injection device
DE102005059163A1 (en) * 2005-12-12 2007-06-21 Robert Bosch Gmbh Fuel injection device for an internal combustion engine
US8100110B2 (en) * 2005-12-22 2012-01-24 Caterpillar Inc. Fuel injector with selectable intensification
DE102006026381A1 (en) * 2006-06-07 2007-12-13 Robert Bosch Gmbh Fuel injector with pressure booster and piezo actuator arranged on the low pressure side
DE102007002760A1 (en) * 2007-01-18 2008-07-24 Robert Bosch Gmbh Fuel injector with integrated pressure booster
DE102007062178A1 (en) * 2007-12-21 2009-06-25 Robert Bosch Gmbh Injector of a fuel injection system with a 3/2-way control valve
EP2410168A1 (en) * 2010-07-23 2012-01-25 Wärtsilä Schweiz AG Fluid dispenser and method for providing an operating fluid using a fluid dispenser
GB201309118D0 (en) * 2013-05-21 2013-07-03 Delphi Tech Holding Sarl Fuel Injector
GB201518923D0 (en) 2015-10-27 2015-12-09 Delphi Internat Operations Luxembourg S À R L Control valve arrangement of a fuel injector
DK179161B1 (en) * 2016-05-26 2017-12-18 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland A large two-stroke compression-ignited internal combustion engine with fuel injection system for low flashpoint fuel and a fuel valve therefore
DE102016221547A1 (en) * 2016-11-03 2018-05-03 Robert Bosch Gmbh Fuel injection valve for injecting a gaseous and / or liquid fuel
US10119507B1 (en) * 2017-07-17 2018-11-06 GM Global Technology Operations LLC Rotating fuel injector assembly
DE102019219441A1 (en) * 2019-01-31 2020-08-06 Robert Bosch Gmbh Dual fuel injector

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087129A2 (en) * 1999-09-23 2001-03-28 Delphi Technologies, Inc. Fuel injector
US20020125339A1 (en) * 2001-03-02 2002-09-12 Perr Julius P. Variable spray hole fuel injector with dual actuators
DE10229417A1 (en) * 2002-06-29 2004-01-15 Robert Bosch Gmbh Accumulator injection system with vario nozzle and pressure booster
DE10229415A1 (en) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Device for damping the needle stroke on pressure-controlled fuel injectors
US20040055559A1 (en) * 2000-08-03 2004-03-25 Best Christopher Howard Dual mode fuel injector
EP1435453A1 (en) * 2003-01-03 2004-07-07 Robert Bosch Gmbh Inward opening dual mode nozzle
US20040256495A1 (en) * 1998-09-16 2004-12-23 Baker S. Michael Dual fuel injection valve and method of operating a dual fuel injection valve

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US6073862A (en) * 1998-09-16 2000-06-13 Westport Research Inc. Gaseous and liquid fuel injector
DE19910970A1 (en) * 1999-03-12 2000-09-28 Bosch Gmbh Robert Fuel injector
US6685160B2 (en) * 2001-07-30 2004-02-03 Caterpillar Inc Dual solenoid latching actuator and method of using same
DE10205970A1 (en) 2002-02-14 2003-09-04 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE10229413A1 (en) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Pressure intensifier control by moving an injection valve member
DE10247210A1 (en) * 2002-10-10 2004-04-22 Robert Bosch Gmbh Fuel injection unit for internal combustion engines has filter element connected in series to one chamber of pressure intensifier and to flow lines for filling of at least one chamber of pressure intensifier
DE10315015B4 (en) * 2003-04-02 2005-12-15 Robert Bosch Gmbh Fuel injector with pressure booster and servo valve with optimized control quantity
US7320310B2 (en) * 2003-04-02 2008-01-22 Robert Bosch Gmbh Fuel injector provided with provided with a pressure transmitter controlled by a servo valve
US7124744B2 (en) * 2003-07-31 2006-10-24 Caterpillar Inc. Variable control orifice member and fuel injector using same
DE102004024527A1 (en) * 2004-05-18 2005-12-15 Robert Bosch Gmbh Fuel injection system
DE102004028521A1 (en) * 2004-06-11 2005-12-29 Robert Bosch Gmbh Fuel injector with multipart injection valve member and with pressure booster
DE102004053274A1 (en) * 2004-11-04 2006-05-11 Robert Bosch Gmbh Fuel injection system
DE102004053421A1 (en) * 2004-11-05 2006-05-11 Robert Bosch Gmbh Fuel injector

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040256495A1 (en) * 1998-09-16 2004-12-23 Baker S. Michael Dual fuel injection valve and method of operating a dual fuel injection valve
EP1087129A2 (en) * 1999-09-23 2001-03-28 Delphi Technologies, Inc. Fuel injector
US20040055559A1 (en) * 2000-08-03 2004-03-25 Best Christopher Howard Dual mode fuel injector
US20020125339A1 (en) * 2001-03-02 2002-09-12 Perr Julius P. Variable spray hole fuel injector with dual actuators
DE10229417A1 (en) * 2002-06-29 2004-01-15 Robert Bosch Gmbh Accumulator injection system with vario nozzle and pressure booster
DE10229415A1 (en) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Device for damping the needle stroke on pressure-controlled fuel injectors
EP1435453A1 (en) * 2003-01-03 2004-07-07 Robert Bosch Gmbh Inward opening dual mode nozzle

Also Published As

Publication number Publication date
EP1584813A2 (en) 2005-10-12
DE102004017305A1 (en) 2005-10-27
US20050224600A1 (en) 2005-10-13

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