EP1619385A1 - Actionneur d'un système d'injection de carburant - Google Patents

Actionneur d'un système d'injection de carburant Download PDF

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Publication number
EP1619385A1
EP1619385A1 EP05101878A EP05101878A EP1619385A1 EP 1619385 A1 EP1619385 A1 EP 1619385A1 EP 05101878 A EP05101878 A EP 05101878A EP 05101878 A EP05101878 A EP 05101878A EP 1619385 A1 EP1619385 A1 EP 1619385A1
Authority
EP
European Patent Office
Prior art keywords
actuator
actuator device
needle
actuators
throttle 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Withdrawn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
EP05101878A
Other languages
German (de)
English (en)
Inventor
Heribert O. Dr. Geisser
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.)
Dualon International Holding SA
Original Assignee
Dualon International Holding SA
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 Dualon International Holding SA filed Critical Dualon International Holding SA
Publication of EP1619385A1 publication Critical patent/EP1619385A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0019—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of electromagnets or fixed armatures
    • 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

Definitions

  • the invention relates to an actuator device for a fuel injection system.
  • the invention provides for solving an actuator device according to claim 1, thereby improving the existing structures.
  • the invention in general is characterized in that it combines in practice proven elements such profiled and used that they are placed on one or more Steuerelektronik / s in the situation, a mechanical-hydraulic To enable control in such a way that it is able to ensure a quantum, pressure and time optimal pre, post and main injection even with large compression ignition engines.
  • It provides an actuator for a fuel injection system, characterized in that two or more, coaxially arranged actuators with different reaction times can be used separately for the provision of the stroke for controlling the throttle nozzle.
  • the stroke in height and time can be adjusted to the needs of each of the pre-, main or post-injection and on the profiling of the coaxially arranged throttle nozzle (needle and seat) each injection process further optimized for the specific engine.
  • the different reaction mode of the actuators in time and stroke is given by the fact that different reacting actuator elements are used (eg., Electric magnets of different reaction time, energizable contraction or expansion materials (piezo), etc.).
  • different reacting actuator elements eg., Electric magnets of different reaction time, energizable contraction or expansion materials (piezo), etc.
  • the invention is predominantly, but not exclusively, applicable to the combination of two actuators and an integrated throttle nozzle.
  • Actuators and throttle nozzle are arranged coaxially and require a small footprint in their lateral and their axial configuration (compact design).
  • At least one actuator exerts a pulling movement (armature plate or contraction) and at least one other or the same actuator exerts an impact movement (expansion).
  • the nozzle throttle is advantageously profiled tuned to the engine behavior in pre-, main- and post-injection.
  • the following statements relate to a multi-stage electronically controlled actuator for a fuel injection system (gas, diesel, heavy oil, biomass, water injection, etc.) and its combination with a throttle nozzle for compression ignition engines. This creates a kind of multi-stage factor with integrated throttle nozzle.
  • An actuator device for a fuel injection system comprises a first actuator 1 for controlling a throttle nozzle 5, which can be opened and closed by a needle 15.
  • the first actuator 1 serves to move the needle 15, which can be lifted off from a valve seat 18, in order to inject a certain amount of liquid into a combustion chamber.
  • the needle 15 is connected to an armature plate 16 against which a spring 7 abuts, which is supported at its opposite end to a stop 17, so that the needle 15 is biased in the closed position of the throttle nozzle 5.
  • a booster piston 6 In the flow path of the fluid to the throttle nozzle 5 is further arranged a booster piston 6, wherein a fluid flows from an inlet 11 to an outlet 12, as indicated by the arrows.
  • a second actuator 2 Adjacent to the first actuator 1, a second actuator 2 is optionally provided, which can also be used for actuating the needle 15 for the control of the throttle nozzle 5.
  • a third actuator 3 Adjacent to the spring 7 coaxial with an axis 8 of the needle 15, a third actuator 3 is arranged, which can optionally be supplemented by a fourth actuator 4, which is also disposed within the spring 7.
  • the needle 15 In the closed state, the needle 15 abuts against the valve seat 18.
  • the actuator 1 moves the needle 15 along the axis 8 to the opening of the throttle nozzle 5 together with the armature plate 16 by an impact force, wherein a stroke 9 is generated by the actuator 1.
  • the actuator 1 is supported on the opposite side to the anchor plate 16 by a fixed support 13.
  • a second actuator 3 is actuated, which exerts a train on the armature plate 16 against the force of the spring 7 to move the needle 15 with a stroke 10 which is greater than the stroke 9 of the first actuator 1.
  • the throttle nozzle 5 is closed again by the force of the spring 7.
  • the first actuator 1 may be designed to produce a small stroke 9, for example as a piezoelectric element, which may be e.g. is formed from a ceramic equipped with electrodes. Upon application of a voltage, the piezo element expands to lift the needle 15. Although such a piezo element can usually only produce a relatively small stroke, it is relatively fast in the response time.
  • a piezoelectric element which may be e.g. is formed from a ceramic equipped with electrodes.
  • the second actuator 3 may be formed, for example, by an electromagnet to generate a larger stroke 10, which attracts the armature plate 15 against the force of the spring 7 when energized.
  • the first actuator 1 and the second actuator 3 can be connected in chronological succession, so that the injection into a pre, main and post injection is divided to optimize fuel supply and reduce emissions. Controlled fuel injection also reduces fuel consumption, which optimizes combustion.
  • FIG 3 the front end portion of the needle 15 of the throttle nozzle 5 is shown.
  • a needle tip 20 is arranged conically around the axis 8 and has an opening angle ⁇ .
  • the needle tip 20 is provided at a distance from the axis 8 with a kink 21 from which the needle 15 widens conically in a portion 22, wherein the opening angle ⁇ is smaller than the opening angle ⁇ .
  • a channel 25 is provided, which opens spaced from the axis 8 in a conically widening seat surface of the valve seat 18.
  • the needle tip 20 abuts the valve seat 18.
  • the needle tip 20 can be profiled differently to allow different amounts of fluid to pass through as it is lifted off the valve seat 18.
  • the valve seat 18 can also be profiled and / or provided with a desired opening angle to specify the amount of fluid flowing through when opening the throttle nozzle 5.
  • an actuator device which can control the injection process very flexible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
EP05101878A 2004-07-23 2005-03-10 Actionneur d'un système d'injection de carburant Withdrawn EP1619385A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200420011603 DE202004011603U1 (de) 2004-07-23 2004-07-23 Aktoreinrichtung für ein Kraftstoffeinspritzsystem

Publications (1)

Publication Number Publication Date
EP1619385A1 true EP1619385A1 (fr) 2006-01-25

Family

ID=34609694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101878A Withdrawn EP1619385A1 (fr) 2004-07-23 2005-03-10 Actionneur d'un système d'injection de carburant

Country Status (2)

Country Link
EP (1) EP1619385A1 (fr)
DE (1) DE202004011603U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2864622A4 (fr) * 2012-06-21 2016-03-09 Westport Power Inc Soupape d'injection de combustible et procédé d'actionnement
GB2563838A (en) * 2017-06-26 2019-01-02 Delphi Int Operations Luxembourg Sarl Inlet metering valve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1860317A1 (fr) * 2006-05-23 2007-11-28 Keihin Corporation Dispositif d'injection de carburant, dispositif de commande d'injection de carburant et procédé de commande du dispositif de commande d'injection
DE102006034111A1 (de) * 2006-07-24 2008-01-31 Robert Bosch Gmbh Servoventilgesteuerter Injektor zur Einspritzung von Kraftstoff in Zylinderbrennräume von Brennkraftmaschinen; insbesondere Common-Rail-Injektor
DE102006036781A1 (de) * 2006-08-07 2008-02-14 Robert Bosch Gmbh Injektor und zugehöriges Betriebsverfahren

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246373A1 (fr) * 1986-05-22 1987-11-25 Osamu Matsumura Dispositif d'injection de carburant
US5593134A (en) * 1995-02-21 1997-01-14 Applied Power Inc. Magnetically assisted piezo-electric valve actuator
US5645226A (en) * 1995-02-13 1997-07-08 Siemens Automotive Corporation Solenoid motion initiator
EP0789142A1 (fr) * 1995-08-29 1997-08-13 Isuzu Motors Limited Dispositif d'injection de carburant du type a accumulation
US6019091A (en) * 1998-08-13 2000-02-01 Diesel Technology Company Control valve
GB2341893A (en) * 1998-09-23 2000-03-29 Lucas Industries Ltd Two-stage electromagnetically actuated fuel injector for i.c. engines
EP1199458A2 (fr) * 2000-10-18 2002-04-24 Toyota Jidosha Kabushiki Kaisha Dispositif d'injection de carburant pour moteur à combustion interne et procédé de commande associé

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246373A1 (fr) * 1986-05-22 1987-11-25 Osamu Matsumura Dispositif d'injection de carburant
US5645226A (en) * 1995-02-13 1997-07-08 Siemens Automotive Corporation Solenoid motion initiator
US5593134A (en) * 1995-02-21 1997-01-14 Applied Power Inc. Magnetically assisted piezo-electric valve actuator
EP0789142A1 (fr) * 1995-08-29 1997-08-13 Isuzu Motors Limited Dispositif d'injection de carburant du type a accumulation
US6019091A (en) * 1998-08-13 2000-02-01 Diesel Technology Company Control valve
GB2341893A (en) * 1998-09-23 2000-03-29 Lucas Industries Ltd Two-stage electromagnetically actuated fuel injector for i.c. engines
EP1199458A2 (fr) * 2000-10-18 2002-04-24 Toyota Jidosha Kabushiki Kaisha Dispositif d'injection de carburant pour moteur à combustion interne et procédé de commande associé

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2864622A4 (fr) * 2012-06-21 2016-03-09 Westport Power Inc Soupape d'injection de combustible et procédé d'actionnement
US9366195B2 (en) 2012-06-21 2016-06-14 Westport Power Inc. Fuel injection valve and method of actuating
GB2563838A (en) * 2017-06-26 2019-01-02 Delphi Int Operations Luxembourg Sarl Inlet metering valve

Also Published As

Publication number Publication date
DE202004011603U1 (de) 2005-05-19

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