EP1400684B1 - Circuit pour vanne électromagnétique de purge commandé par modulation par largeur d'impulsions pour ventiler le réservoir d'un véhicule - Google Patents

Circuit pour vanne électromagnétique de purge commandé par modulation par largeur d'impulsions pour ventiler le réservoir d'un véhicule Download PDF

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Publication number
EP1400684B1
EP1400684B1 EP03015410A EP03015410A EP1400684B1 EP 1400684 B1 EP1400684 B1 EP 1400684B1 EP 03015410 A EP03015410 A EP 03015410A EP 03015410 A EP03015410 A EP 03015410A EP 1400684 B1 EP1400684 B1 EP 1400684B1
Authority
EP
European Patent Office
Prior art keywords
circuit arrangement
valve
arrangement according
pulse
pulse width
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.)
Expired - Lifetime
Application number
EP03015410A
Other languages
German (de)
English (en)
Other versions
EP1400684A2 (fr
EP1400684A3 (fr
Inventor
Torsten Gerlich
Christopher Klatt
Ralf Heinrich
Christof Klesen
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.)
Eagle Actuator Components GmbH and Co KG
Original Assignee
Eagle Actuator Components GmbH and Co KG
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 Eagle Actuator Components GmbH and Co KG filed Critical Eagle Actuator Components GmbH and Co KG
Publication of EP1400684A2 publication Critical patent/EP1400684A2/fr
Publication of EP1400684A3 publication Critical patent/EP1400684A3/fr
Application granted granted Critical
Publication of EP1400684B1 publication Critical patent/EP1400684B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1811—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current demagnetising upon switching off, removing residual magnetism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F2007/1888—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings using pulse width modulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits

Definitions

  • the invention relates to a circuit arrangement for a pulse width modulated controllable electromagnetic regeneration valve for tank ventilation of a motor vehicle, comprising a voltage source for supplying the magnetic coil of the regeneration valve with electrical energy, a control unit for generating pulse width modulated signals and a switching device via which the magnetic coil with the pulse width modulated signals of the control unit can be acted upon ,
  • a regeneration valve is usually an electromagnetic driven valve comprising a solenoid, an armature with sealing element, a sealing seat and a return spring (closing spring).
  • the armature In the energized state, the armature lifts the sealing element against the spring force of the closing spring from the sealing seat by the magnetic force of the coil and thereby releases the flow opening.
  • the valve In the de-energized state, the sealing element is pressed by the closing spring on the sealing seat, the valve is in Scht manposition.
  • the control of the regeneration valve via the engine control, which determines the respective maximum loadable air-fuel mass flow according to the respective load state of the internal combustion engine and converts it into a corresponding control signal.
  • the regeneration valve is usually pulsed (pulse width modulated) driven and outputs, depending on the motor control each predetermined duty cycle, different dosing discontinuously.
  • Tastverhit is in this context, the ratio between the total period, d. H. the period of the open and closed valve, the period of the open valve understood.
  • the clock frequency is selected to be so high that the valve can no longer follow the oscillating excitation and instead remains in a position that corresponds to the respective mean coil current
  • the publication FR 2797022 shows a solenoid valve in which a zener diode is used to protect a transistor from voltage spikes.
  • a disadvantage of the known regeneration valves of the type described above is that it is both clocked and pulse-width modulated proportional operation to an undesirable noise, which has not yet been prevented.
  • the object of the invention is to provide a circuit arrangement for an electromagnetic regeneration valve for tank ventilation of a motor vehicle, by means of which the noise can be significantly reduced both in clocked and in proportional operation.
  • a pulse width modulated controllable electromagnetic regeneration valve for tank ventilation of a motor vehicle which is a voltage source for supplying the magnetic coil of the regeneration valve with electrical energy, a control unit for generating pulse width modulated signals and a switching device via which the magnetic coil with the pulse width modulated signals Control unit is acted upon, comprises means for suppressing high induced voltages to the solenoid provided.
  • these means are a so-called freewheeling diode, which is connected in parallel to the magnetic coil.
  • the regeneration valve is preferably activated in proportional operation at a pulse frequency between 20 Hz and 200 Hz. It has been found that in the commonly used clocked proportional valves, the valve characteristic (mass flow as a function of pulse duration) becomes steeper and non-linear with an increase in the pulse frequency, which leads to a deterioration of the dosing accuracy. This behavior can be explained by the fact that on the one hand by the inductance of the coil, the current build-up in the coil is slowed down and on the other hand, the inertia of the mass to be moved is overcome. With increasing pulse frequency thus a higher coil current for opening the valve gap is required. In proportional operation, the pulse frequency is preferably about 50 Hz. It has been shown that this frequency is already sufficient to ensure a quasi-proportional operation in which a coil current always flows and thus the valve armature does not strike.
  • the circuit arrangement according to the invention has the advantage that the currently located in motor vehicles control electronics can be left, which is to be evaluated as a significant cost advantage, since nothing prevents the use of the circuit in existing series.
  • the inventive Circuit arrangement can be used both for the clocked and for the proportional operation.
  • Fig. 1 shows the block diagram of the control of the regeneration valve.
  • the magnetic circuit of the valve is represented by the resistance R Sp and the inductance L Sp .
  • Parallel to this, the freewheeling diode D f used according to the invention is shown.
  • the power transistor, in which a diode D s is integrated for protection purposes, is controlled by control pulses of constant frequency and variable pulse width and thus switches the battery or vehicle electrical system voltage U b to the valve.
  • the control is usually via the engine control.
  • the pulse width modulated control of a solenoid valve and in particular in a motor vehicle is known per se and often described, which is why at this point not further discussed.
  • Fig. 2 shows by way of example the course of the current in the magnetic coil at a pulse frequency of 50 Hz in proportional operation and a) without a freewheeling diode a duty cycle of 20%, b) with freewheeling diode with a duty cycle of 20% and c) with a duty cycle of 90% with freewheeling diode. It can be seen that the current reduction with free-wheeling diode is significantly slowed down. At a duty cycle of 90%, the coil current is always greater than 0. The effect on the armature movement shows Fig. 3 , With a duty cycle of 20% a) without free-wheeling diode, the behavior compared to the free-wheeling diode b) is significantly rougher.
  • the anchor returns very quickly to the rest position, which is obviously due to the massive noise. It is even in the embodiment with diode a very gentle closing behavior of the valve, the noise. is significantly reduced. With a duty cycle of 90% with freewheeling diode c) it is no longer possible to close the valve. This leads to a complete freedom from noise.
  • circuit arrangement according to the invention leads not only in proportional operation at high pulse frequencies to a significant noise reduction, but due to the slow current reduction after a pulse in the clocked operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Control Of Linear Motors (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (7)

  1. Arrangement de circuit pour une vanne de régénération électromagnétique pouvant être commandée par modulation en largeur d'impulsion pour la purge du réservoir d'un véhicule automobile, comprenant une source de tension pour l'alimentation en énergie électrique de la bobine magnétique de la vanne de régénération, une unité de commande pour générer des signaux modulés en largeur d'impulsion, ainsi qu'un dispositif de computation par le biais auquel les signaux modulés en largeur d'impulsion de l'unité de commande peuvent être appliqués à la bobine magnétique, caractérisé en ce qu'il existe sur la bobine magnétique des moyens pour atténuer les tensions d'induction élevées, les moyens comprenant une diode de roue libre qui est branchée en parallèle avec la bobine magnétique et qui est configurée pour réduire le bruit de la vanne par un apaisement du mouvement de l'induit de l'électrovanne.
  2. Arrangement de circuit selon la revendication 1, caractérisé en ce que la vanne de régénération peut être commandée en mode proportionnel avec une fréquence d'impulsion comprise entre 20 Hz et 200 Hz.
  3. Arrangement de circuit selon la revendication 2, caractérisé en ce que la vanne de régénération peut être commandée avec une fréquence d'impulsion d'environ 50 Hz.
  4. Arrangement de circuit selon l'une des revendications 1 à 3, caractérisé en ce que la source de tension comprend le réseau de bord du véhicule automobile.
  5. Arrangement de circuit selon l'une des revendications 1 à 4, caractérisé en ce que l'unité de commande comprend la commande du moteur.
  6. Arrangement de circuit selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif de commutation comprend un transistor de puissance.
  7. Arrangement de circuit selon la revendication 6, caractérisé en ce qu'une diode est branchée en parallèle avec le transistor de puissance.
EP03015410A 2002-09-20 2003-07-09 Circuit pour vanne électromagnétique de purge commandé par modulation par largeur d'impulsions pour ventiler le réservoir d'un véhicule Expired - Lifetime EP1400684B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10243956A DE10243956A1 (de) 2002-09-20 2002-09-20 Schaltungsanordnung für ein pulsweitenmoduliert ansteuerbares elektromagnetisches Regenerierventil zur Tankentlüftung eines Kraftfahrzeugs
DE10243956 2002-09-20

Publications (3)

Publication Number Publication Date
EP1400684A2 EP1400684A2 (fr) 2004-03-24
EP1400684A3 EP1400684A3 (fr) 2006-12-06
EP1400684B1 true EP1400684B1 (fr) 2012-10-31

Family

ID=31896268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03015410A Expired - Lifetime EP1400684B1 (fr) 2002-09-20 2003-07-09 Circuit pour vanne électromagnétique de purge commandé par modulation par largeur d'impulsions pour ventiler le réservoir d'un véhicule

Country Status (5)

Country Link
US (1) US20040105209A1 (fr)
EP (1) EP1400684B1 (fr)
JP (1) JP2004116522A (fr)
CA (1) CA2441249C (fr)
DE (1) DE10243956A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110017178A1 (en) 2009-07-21 2011-01-27 Mcdonald William Keith Canister purge control valve control systems
DE102011089228A1 (de) * 2011-12-20 2013-06-20 Robert Bosch Gmbh Vorrichtung zum Ansteuern elektrisch betätigbarer Ventile in verschiedenen Betriebsarten
DE102015218684A1 (de) 2015-09-29 2017-03-30 Robert Bosch Gmbh Verfahren zur Regenerierung eines Aktivkohlefilters einer Tankentlüftungsanlage und Tankentlüftungsanlage für ein Kraftfahrzeug mit einer Einzylinder-Brennkraftmaschine
CN109311388B (zh) 2016-04-15 2022-05-31 伊顿智能动力有限公司 用于燃料蒸气环境的蒸气不可渗透电磁阀
FR3090185A1 (fr) * 2018-12-17 2020-06-19 Valeo Systeme De Controle Moteur Dispositif electromecanique comportant un systeme d'attenuation du bruit
CN109686616B (zh) * 2019-01-21 2020-04-28 广东美的制冷设备有限公司 继电器驱动电路和空调器

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
US3588291A (en) * 1969-12-05 1971-06-28 Mechanical Tech Inc Resonant piston pumps
US4703737A (en) * 1986-07-31 1987-11-03 Bendix Electronics Limited Vapor control valve and system therefor
US4796853A (en) * 1987-12-22 1989-01-10 General Motors Corporation Remotely configurable solenoid driver circuit for direct pressure electronic transmission control
US4915204A (en) * 1988-04-29 1990-04-10 Chrysler Corporation Push/pull clutch apply piston of an automatic transmission
US4851959A (en) * 1988-07-25 1989-07-25 Eastman Kodak Company Solenoid engagement sensing circuit
CA2044994C (fr) * 1990-06-21 1999-09-14 Frank Whitney Shacklock Regulation de la temperature de l'eau dans une laveuse automatique par modulation de largeur d'impulsions
DE4205563A1 (de) * 1992-02-22 1993-08-26 Pierburg Gmbh Elektromagnetspule fuer ventile
DE4205963A1 (de) * 1992-02-27 1993-09-02 Kuka Wehrtechnik Gmbh Panzerhaubitze
US5261382A (en) * 1992-09-22 1993-11-16 Coltec Industries Inc. Fuel injection system
US5550701A (en) * 1994-08-30 1996-08-27 International Rectifier Corporation Power MOSFET with overcurrent and over-temperature protection and control circuit decoupled from body diode
DE19511743A1 (de) * 1995-03-31 1996-10-02 Micron Electronics Devices Gmb Elektrischer Schaltkreis zum Ansteuern eines wenigstens eine Magnetspule aufweisenden magnetischen Aktuators sowie Magnetventil mit einem solchen Schaltkreis
WO1996036806A2 (fr) * 1995-05-19 1996-11-21 Siemens Electric Limited Systeme de purge de reservoir a vapeur a commande de vanne de purge perfectionnee
DE29600866U1 (de) * 1996-01-19 1996-03-07 Festo Kg Schaltungsanordnung zur Steuerung von Magnetventilen
DE19619399A1 (de) * 1996-05-14 1997-11-20 Telefunken Microelectron Schaltvorrichtung mit einem Leistungs-FET und einer induktiven Last
US5815362A (en) * 1996-12-04 1998-09-29 Westinghouse Air Brake Company Pulse width modulated drive for an infinitely variable solenoid operated brake cylinder pressure control valve
DE19652391A1 (de) * 1996-12-17 1998-06-18 Pierburg Ag Ansteuerschaltung für eine Elektromagnetspule
US6256185B1 (en) * 1999-07-30 2001-07-03 Trombetta, Llc Low voltage direct control universal pulse width modulation module
FR2797022B1 (fr) * 1999-07-30 2001-10-05 Sagem Electrovanne et dispositif de commande en comportant application

Also Published As

Publication number Publication date
JP2004116522A (ja) 2004-04-15
EP1400684A2 (fr) 2004-03-24
US20040105209A1 (en) 2004-06-03
EP1400684A3 (fr) 2006-12-06
DE10243956A1 (de) 2004-04-15
CA2441249C (fr) 2007-06-05
CA2441249A1 (fr) 2004-03-20

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