DE10342698A1 - Pressure controlled CR injector - Google Patents

Pressure controlled CR injector Download PDF

Info

Publication number
DE10342698A1
DE10342698A1 DE2003142698 DE10342698A DE10342698A1 DE 10342698 A1 DE10342698 A1 DE 10342698A1 DE 2003142698 DE2003142698 DE 2003142698 DE 10342698 A DE10342698 A DE 10342698A DE 10342698 A1 DE10342698 A1 DE 10342698A1
Authority
DE
Germany
Prior art keywords
connection
port
valve
injector
blocked
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Withdrawn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
DE2003142698
Other languages
German (de)
Inventor
Wolfgang Stoecklein
Matthias Schnell
Reiner Koch
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
Priority to DE2003142698 priority Critical patent/DE10342698A1/en
Priority to PCT/DE2004/001734 priority patent/WO2005035975A1/en
Publication of DE10342698A1 publication Critical patent/DE10342698A1/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Withdrawn legal-status Critical Current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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated 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
    • 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
    • F02M59/468—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means using piezoelectric operating means

Abstract

Die vorliegende Erfindung betrifft einen Injektor (1) zum Einspritzen von Kraftstoff in einen Brennraum (14) einer Brennkraftmaschine, mit einem 3/2-Ventil (3), dessen erster Anschluss (7) mit einer Hochdruckleitung (10), dessen zweiter Anschluss (8) mit einer zu einer Düsennadel (4) führenden Zuführungsleitung (11) und dessen dritter Anschluss (9) mit einem Rücklauf (16) verbunden ist. In der Spritzstellung des Ventils (3) ist der erste Anschluss (7) mit dem zweiten Anschluss (8) verbunden und der dritte Anschluss (9) ist gesperrt. In der Spritzpausenstellung des Ventils (3) ist der erste Anschluss (7) gesperrt, während der zweite Anschluss (8) mit dem dritten Anschluss (9) verbunden ist. Ein Ventilkörper (6) des Ventils (3) weist eine erste Steuerkontur (17) zum Steuern der Verbindung zwischen erstem Anschluss (7) und zweitem Anschluss (8) sowie eine zweite Steuerkontur (18) zum Steuern der Verbindung zwischen zweitem Anschluss (8) und drittem Anschluss (9) auf. Der Ventilkörper (6) ist mit einem Piezoaktor (19) direkt antriebsgekoppelt.The present invention relates to an injector (1) for injecting fuel into a combustion chamber (14) of an internal combustion engine, having a 3/2 valve (3), the first connection (7) of which is connected to a high-pressure line (10), the second connection (10). 8) with a leading to a nozzle needle (4) feed line (11) and the third port (9) with a return line (16) is connected. In the injection position of the valve (3), the first connection (7) is connected to the second connection (8) and the third connection (9) is blocked. In the spray pause position of the valve (3), the first port (7) is blocked while the second port (8) is connected to the third port (9). A valve body (6) of the valve (3) has a first control contour (17) for controlling the connection between the first connection (7) and the second connection (8) and a second control contour (18) for controlling the connection between the second connection (8). and third port (9). The valve body (6) is directly drive-coupled with a piezoactuator (19).

DE2003142698 2003-09-16 2003-09-16 Pressure controlled CR injector Withdrawn DE10342698A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2003142698 DE10342698A1 (en) 2003-09-16 2003-09-16 Pressure controlled CR injector
PCT/DE2004/001734 WO2005035975A1 (en) 2003-09-16 2004-08-03 Pressure-controlled common rail injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2003142698 DE10342698A1 (en) 2003-09-16 2003-09-16 Pressure controlled CR injector

Publications (1)

Publication Number Publication Date
DE10342698A1 true DE10342698A1 (en) 2005-04-28

Family

ID=34398749

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2003142698 Withdrawn DE10342698A1 (en) 2003-09-16 2003-09-16 Pressure controlled CR injector

Country Status (2)

Country Link
DE (1) DE10342698A1 (en)
WO (1) WO2005035975A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5043761B2 (en) 2008-06-18 2012-10-10 本田技研工業株式会社 Fuel injection device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341546A1 (en) * 1993-12-07 1995-06-08 Bosch Gmbh Robert Fuel injection device for internal combustion engines
DE19512270A1 (en) * 1995-04-01 1996-09-26 Mtu Friedrichshafen Gmbh Fuel injection device for diesel engine
DE19512730C1 (en) * 1995-04-05 1996-08-29 Mtu Friedrichshafen Gmbh Fuel injection system for IC engine
DE29717649U1 (en) * 1997-10-02 1997-11-20 Fev Motorentech Gmbh & Co Kg Directly controlled injection valve, in particular fuel injection valve
DE10001828A1 (en) * 2000-01-18 2001-07-19 Fev Motorentech Gmbh Direct-control fuel injection device for combustion engine has valve body with actuator to move it in opening direction to let fuel flow from high pressure channel to connecting channel
DE10103089A1 (en) * 2001-01-24 2002-08-08 Bosch Gmbh Robert 3/2-way valve

Also Published As

Publication number Publication date
WO2005035975A1 (en) 2005-04-21

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee