AT2962U2 - INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE - Google Patents

INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE Download PDF

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Publication number
AT2962U2
AT2962U2 AT44998U AT44998U AT2962U2 AT 2962 U2 AT2962 U2 AT 2962U2 AT 44998 U AT44998 U AT 44998U AT 44998 U AT44998 U AT 44998U AT 2962 U2 AT2962 U2 AT 2962U2
Authority
AT
Austria
Prior art keywords
valve
control valve
compensation
circuit
combustion engine
Prior art date
Application number
AT44998U
Other languages
German (de)
Other versions
AT2962U3 (en
Inventor
Otfried Dipl Ing Derschmidt
Original Assignee
Avl List 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 Avl List Gmbh filed Critical Avl List Gmbh
Priority to AT0044998U priority Critical patent/AT2962U3/en
Priority to DE1999129589 priority patent/DE19929589C2/en
Publication of AT2962U2 publication Critical patent/AT2962U2/en
Publication of AT2962U3 publication Critical patent/AT2962U3/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
    • 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
    • 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
    • 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
    • F02M61/167—Means for compensating clearance or thermal expansion
    • 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

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

Bei einer Einspritzeinrichtung (1, 1a) für eine Brennkraftmaschine zur direkten Kraftstoffeinspritzung in einen Brennraum erfolgt die Steuerung der hydraulischen Öffnungs- oder Schließkraft der Ventilnadel (3, 3a) über ein Steuerventil (12, 12a), welches durch eine piezoelektrische Betätigungseinrichtung (17, 17a) betätigt wird. Um eine einfache Kompensation von Temperaturschwankungen und/oder Setzen bzw. Alterung zu erreichen, ist eine Kompensationsschaltung (24, 24a) zur automatischen Kalibrierung und/oder Kompensation von Temperatureinflüssen der Betätigungseinrichtung (17, 17a) vorgesehen, wobei die Kompensationsschaltung (24, 24a) mit dem Steuerventil (12, 12a) über mindestens eine Triggerleitung (26, 26a) eines Triggerschaltkreises (25, 25a) zur Übertragung von Lageinformationssignalen über die Ist-Position des Ventilkörpers (14, 14a) des Steuerventiles (12, 12a) verbunden ist, wobei der Ventilkörper (14, 14a) elektrisch leitend ausgeführt und zusammen mit dem Ventilsitz (16, 16a) einen ersten elektrischen Schaltteil des Triggerschaltkreises (25, 25a) bildet, und wobei in der Öffnungsstellung des Steuerventiles (12, 12a) der Triggerschaltkreis (25, 25a) getrennt und in der Schließstellung des Steuerventiles (12, 12a) zumindest zeitweise bei Aufliegen des Ventilkörpers (14, 14a) auf dem Ventilsitz (16, 16a) geschlossen ist.In the case of an injection device (1, 1a) for an internal combustion engine for direct fuel injection into a combustion chamber, the hydraulic opening or closing force of the valve needle (3, 3a) is controlled via a control valve (12, 12a) which is actuated by a piezoelectric actuating device (17, 17a) is actuated. In order to achieve a simple compensation of temperature fluctuations and / or setting or aging, a compensation circuit (24, 24a) is provided for the automatic calibration and / or compensation of temperature influences of the actuating device (17, 17a), the compensation circuit (24, 24a) is connected to the control valve (12, 12a) via at least one trigger line (26, 26a) of a trigger circuit (25, 25a) for the transmission of position information signals via the actual position of the valve body (14, 14a) of the control valve (12, 12a), wherein the valve body (14, 14a) is electrically conductive and forms a first electrical switching part of the trigger circuit (25, 25a) together with the valve seat (16, 16a), and wherein in the open position of the control valve (12, 12a) the trigger circuit (25 , 25a) separately and in the closed position of the control valve (12, 12a) at least temporarily when the valve body (14, 14a) rests on the valve itz (16, 16a) is closed.

AT0044998U 1998-07-02 1998-07-02 INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE AT2962U3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT0044998U AT2962U3 (en) 1998-07-02 1998-07-02 INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE
DE1999129589 DE19929589C2 (en) 1998-07-02 1999-06-29 Injection device for an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0044998U AT2962U3 (en) 1998-07-02 1998-07-02 INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
AT2962U2 true AT2962U2 (en) 1999-07-26
AT2962U3 AT2962U3 (en) 1999-11-25

Family

ID=3490921

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0044998U AT2962U3 (en) 1998-07-02 1998-07-02 INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE

Country Status (2)

Country Link
AT (1) AT2962U3 (en)
DE (1) DE19929589C2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6400062B1 (en) * 2000-03-21 2002-06-04 Caterpillar Inc. Method and apparatus for temperature compensating a piezoelectric device
DE10129375B4 (en) * 2001-06-20 2005-10-06 Mtu Friedrichshafen Gmbh Injector with piezo actuator
DE10162250A1 (en) 2001-12-18 2003-07-03 Bosch Gmbh Robert Fuel injector
DE10319530B4 (en) * 2003-04-30 2007-01-25 Siemens Ag Method and device for monitoring an electromechanical actuator
DE10326707B3 (en) * 2003-06-11 2005-01-27 Westport Germany Gmbh Valve device and method for injecting gaseous fuel
EP1664525B1 (en) * 2003-09-12 2008-04-23 Siemens Aktiengesellschaft Metering device
GB201406356D0 (en) * 2014-04-09 2014-05-21 Delphi Int Operations Lux Srl Method for the control and diagnosis regarding the operation a fuel injector
CN105797889B (en) * 2016-02-03 2017-12-05 惠州三高电子科技有限公司 A kind of air injection control device of spray product
DE102019200655B4 (en) * 2019-01-18 2020-09-10 Deutsches Zentrum für Luft- und Raumfahrt e.V. Method for operating a piezo actuator and a piezo actuator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175587A (en) * 1977-10-31 1979-11-27 Chrysler Corporation Fuel injection system and control valve for multi-cylinder engines
JPH0338077A (en) * 1989-07-05 1991-02-19 Nippondenso Co Ltd Control device for piezoelectric actuator
ES2135815T3 (en) * 1995-05-03 1999-11-01 Daimler Chrysler Ag INJECTION NOZZLE.
DE19531652A1 (en) * 1995-08-29 1997-05-07 Bosch Gmbh Robert Fuel injection valve for internal combustion engines

Also Published As

Publication number Publication date
DE19929589C2 (en) 2003-01-23
DE19929589A1 (en) 2000-01-13
AT2962U3 (en) 1999-11-25

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