EP0945610A2 - Méthode et dispositif pour commuter une inductance - Google Patents

Méthode et dispositif pour commuter une inductance Download PDF

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Publication number
EP0945610A2
EP0945610A2 EP98118779A EP98118779A EP0945610A2 EP 0945610 A2 EP0945610 A2 EP 0945610A2 EP 98118779 A EP98118779 A EP 98118779A EP 98118779 A EP98118779 A EP 98118779A EP 0945610 A2 EP0945610 A2 EP 0945610A2
Authority
EP
European Patent Office
Prior art keywords
inductance
inductor
switching means
connection
switching
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Withdrawn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
EP98118779A
Other languages
German (de)
English (en)
Other versions
EP0945610A3 (fr
Inventor
Werner Fischer
Birte Luebbeert
Viktor Kahr
Traugott Degler
Stephan Jonas
Hubert Greif
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 EP0945610A2 publication Critical patent/EP0945610A2/fr
Publication of EP0945610A3 publication Critical patent/EP0945610A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01F7/1816—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current making use of an energy accumulator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
    • F02D2041/201—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost inductance

Definitions

  • a method and an apparatus for switching an inductor are known from DE 37 02 680.
  • There forms the Coil of a solenoid valve has an inductance.
  • a fast switching process is required in order to to achieve accurate fuel injection. For this, the when the inductance is switched off, energy released into one Capacitor reloaded. The next time you switch the same inductance or when switching another Inductance causes the stored energy to be quick Current rise.
  • the invention has for its object in a method and a device for switching an inductor of the type mentioned above, as fast as possible.
  • the expense of components should be as low as possible. In particular, they should be cost-effective Other components can be used.
  • Figure 1 is the inductance of the solenoid valve to be switched designated with L1.
  • the first connection of the inductor L1 is connected to ground via a first switching means T1 in connection. Between the first switching means T1 and ground a resistor R1 can be arranged.
  • connection point A is also connected to ground via a second switching device T2 in connection.
  • the second connection of the second inductor L2 is beyond a third switching means T3 and a diode D3 with the first Connection of the second inductor L2 in connection.
  • the anode of diode D3 is in contact with the first terminal.
  • the series connection from the third switching means T3 and the diode D3 form a switchable freewheeling circuit for the second inductor L2.
  • the third switching means T3 also acted upon by control 100 with control signals. Parallel to the inductors is one Freewheel circuit arranged.
  • the freewheeling circuit of the second inductor is switchable.
  • connection point A and the connection point B a second diode D2 is arranged.
  • the anode of the second Diode D2 is connected to connection point A and the cathode the second diode D2 with the connection point B in connection.
  • the cathode is standing the second Zener diode UZ2 with the cathode of the second diode D2 in contact.
  • the cathode of the second Zener diode UZ2 also with the anode connected to the second diode D2.
  • the connection point A between the second inductance L2 and the second switching means T2 is connected to connection point B via diode D2 and thus with the second connection of the inductor L1 in Connection.
  • the first switching means T1, the second switching means T2 and the third switching means T3 are preferably transistors, especially designed as field effect transistors.
  • the current through the Inductance L1 flows, measured and, if necessary, through the controller 100 can be regulated.
  • the first diode D1 is designed as a Zener diode.
  • the second voltage limitation UZ2 and DZ2 can be saved. It is also advantageous if the power loss is not in the Switching means T2 in heat, but back in the supply voltage to be led.
  • the mode of operation of this circuit is explained below of Figure 2 explained.
  • Various signals are shown in FIG plotted against time t.
  • the control signal is in sub-figure 2a for the second switching means T2, in sub-figure 2b, the current IL2 flowing through the second inductor L2 applied.
  • the voltage UA is at the connection point A and sub-figure 2d the voltage UB at the connection point B applied.
  • the control signal is in sub-figure 2e for the first switching means T1 and in sub-figure 2f Current IL1 applied through the first inductor L1.
  • the voltage UB at the connection point B of a value that is approximately the supply voltage UBAT corresponds to a value that increases the Zener voltage UZ2 corresponds to the Zener diode UZ2.
  • the second voltage limiting device causes the voltage UA at the connection point A and the voltage UB at connection point B on this Value remains constant. This voltage limitation is required thus the maximum permissible voltage of the switching means is not exceeded.
  • the voltage rise is caused by the in the second inductance stored energy causes.
  • This tension stands now available for inductor L1. Particularly advantageous it is when the inductance L2 is significantly larger is than the inductance L1.
  • the second phase between the time TEIN and the time TÜ is in the second inductance stored energy in the first inductance reloaded.
  • the current IL1 increases through the Inductance L1 flows due to the voltage UB at the connection point B very quickly to the IÜ value.
  • the current IL2 drops through the second inductance L2 flows down to the value IÜ.
  • the current IL2 and the current IL2 take same values.
  • the voltage UB drops at connection point B on the supply voltage UBAT.
  • the voltage UA and the voltage UB remain until next driving the inductance to a value that the Supply voltage corresponds to UBAT.
  • the switching means T3 also becomes such controlled so that it enables the flow of electricity. This can the energy stored in the second inductor L2 is to be dismantled before the inductance L1 is switched off and must therefore when switching off the inductance L1 not be deleted with.
  • a second inductor L2 is energized. This turns energy into the second inductor L2 is charged.
  • the inductance L2 needs are no longer energized. This can when switching off, d. that is, when the switching means T1 is opened, the switch-off process can be accelerated because only a relatively small inductance must be deleted. This is particularly the case if by means of the freewheeling circuit, consisting of the diode D3 and the third switching means, the inductance L2 already is discharged.
  • a solenoid valve is used as the second inductor is used to control fuel injection, in particular the beginning of fuel injection.
  • the spray adjuster solenoid valve is used as the second inductor L2. Their energy released when switching off to accelerate switching on of the quantity solenoid valve is used.
  • the magnetic circuit and the coil of the sprayer solenoid valve is designed so that a sufficient amount of energy is made available.
  • Figure 3a is the control signal with a solid line for volume solenoid valve, with a dashed line Line of current flowing through the quantity solenoid valve and the stroke of the valve needle with a dash-dotted line of the quantity solenoid valve over time for an injection applied with pre and main injection.
  • the control for the Mangen solenoid valve begins. this means that the switching means T1 goes into its closed state about. As a result, the Current rises. After a delay, the stroke increases the solenoid valve needle. It reaches this at time t2 their new end position. The activation ends at time t3 for the pre-injection. This means the switching means T1 changes to its non-conductive position, the current drops and the solenoid valve needle returns to its original position back.
  • the time interval between pre and main injection is as short as possible.
  • the transfer of magnetic energy is provided. Reloading the magnetic energy occurs at the time TEIN, at the control of the quantity solenoid valve for the main injection begins.
  • the control takes place in such a way that the injection valve solenoid valve at the time TEIN is energized.
  • Duty cycle which is the percentage control of the Injection valve solenoid valve at a fixed frequency, the control of the injection adjuster solenoid valve so that it saturates at the time TEIN has reached.

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)
  • Fuel-Injection Apparatus (AREA)
  • Electronic Switches (AREA)
  • Dc-Dc Converters (AREA)
EP98118779A 1998-03-24 1998-10-05 Méthode et dispositif pour commuter une inductance Withdrawn EP0945610A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19812742 1998-03-24
DE19812742A DE19812742A1 (de) 1998-03-24 1998-03-24 Verfahren und Vorrichtung zum Schalten einer Induktivität

Publications (2)

Publication Number Publication Date
EP0945610A2 true EP0945610A2 (fr) 1999-09-29
EP0945610A3 EP0945610A3 (fr) 2000-09-27

Family

ID=7862006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98118779A Withdrawn EP0945610A3 (fr) 1998-03-24 1998-10-05 Méthode et dispositif pour commuter une inductance

Country Status (4)

Country Link
US (1) US6140717A (fr)
EP (1) EP0945610A3 (fr)
JP (1) JPH11329831A (fr)
DE (1) DE19812742A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL349299A1 (en) * 2001-08-27 2003-03-10 Dariusz Brylinski Method of obtaining energy from a ferromagnetic material
US6631067B2 (en) 2001-12-28 2003-10-07 Visteon Global Technologies, Inc. Electromagnetic actuator for engine valves
JP3926720B2 (ja) * 2002-10-09 2007-06-06 株式会社ケーヒン 励磁制御回路
US7295417B2 (en) * 2004-05-04 2007-11-13 Ford Global Technologies, Llc Electromagnetic valve actuation with series connected electromagnet coils
US6948461B1 (en) 2004-05-04 2005-09-27 Ford Global Technologies, Llc Electromagnetic valve actuation
US20100259861A1 (en) * 2009-04-10 2010-10-14 Pertech Resources, Inc. Solenoid drive method that conserves power
US20110017178A1 (en) * 2009-07-21 2011-01-27 Mcdonald William Keith Canister purge control valve control systems
DE102010063681A1 (de) * 2010-11-03 2012-05-03 Robert Bosch Gmbh Verfahren zum Betreiben eines Schaltgliedes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3702680A1 (de) 1986-02-18 1987-10-29 Bosch Gmbh Robert Verfahren und schaltung zur ansteuerung von elektromagnetischen verbrauchern

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3677255A (en) * 1971-02-18 1972-07-18 Eleanor Burditt Krost Electrical ignition system
US3896346A (en) * 1972-11-21 1975-07-22 Electronic Camshaft Corp High speed electromagnet control circuit
US4327394A (en) * 1978-02-27 1982-04-27 The Bendix Corporation Inductive load drive circuit utilizing a bi-level output comparator and a flip-flop to set three different levels of load current
US4595975A (en) * 1984-10-18 1986-06-17 Gray Sr Edwin V Efficient power supply suitable for inductive loads
JPS61140114A (ja) * 1984-12-12 1986-06-27 Koushinraido Hakuyo Suishin Plant Gijutsu Kenkyu Kumiai 電磁石駆動装置
IT1223872B (it) * 1988-10-27 1990-09-29 Marelli Autronica Circuito per il pilotaggio di un carico induttivo in particolare per il comando degli elettroiniettori di un motore a ciclo diesel
US5583423A (en) * 1993-11-22 1996-12-10 Bangerter; Fred F. Energy saving power control method
US5717562A (en) * 1996-10-15 1998-02-10 Caterpillar Inc. Solenoid injector driver circuit
US6005763A (en) * 1998-02-20 1999-12-21 Sturman Industries, Inc. Pulsed-energy controllers and methods of operation thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3702680A1 (de) 1986-02-18 1987-10-29 Bosch Gmbh Robert Verfahren und schaltung zur ansteuerung von elektromagnetischen verbrauchern

Also Published As

Publication number Publication date
DE19812742A1 (de) 1999-09-30
US6140717A (en) 2000-10-31
JPH11329831A (ja) 1999-11-30
EP0945610A3 (fr) 2000-09-27

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