EP1132603A2 - Circuit de commande d'au moins une charge électromagnétique - Google Patents

Circuit de commande d'au moins une charge électromagnétique Download PDF

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Publication number
EP1132603A2
EP1132603A2 EP00125641A EP00125641A EP1132603A2 EP 1132603 A2 EP1132603 A2 EP 1132603A2 EP 00125641 A EP00125641 A EP 00125641A EP 00125641 A EP00125641 A EP 00125641A EP 1132603 A2 EP1132603 A2 EP 1132603A2
Authority
EP
European Patent Office
Prior art keywords
switching means
circuit arrangement
arrangement according
control
electromagnetic
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.)
Granted
Application number
EP00125641A
Other languages
German (de)
English (en)
Other versions
EP1132603A3 (fr
EP1132603B1 (fr
Inventor
Bernd Spielmann
Thomas Kroker
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 EP1132603A2 publication Critical patent/EP1132603A2/fr
Publication of EP1132603A3 publication Critical patent/EP1132603A3/fr
Application granted granted Critical
Publication of EP1132603B1 publication Critical patent/EP1132603B1/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
    • 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

Definitions

  • the invention relates to a circuit arrangement for Control of at least one electromagnetic consumer, especially a solenoid valve for Control of the fuel metering of an internal combustion engine, with those in the preamble of claim 1 mentioned features.
  • Circuit arrangements of the generic type are known. These are in engine control units of motor vehicles integrated.
  • the circuit arrangement includes a power amplifier, by means of which at least one electromagnetic consumer with a supply voltage source is connectable.
  • at least one electromagnetic consumer for example for the solenoid valves for control mentioned here the fuel metering of an internal combustion engine, exact control is urgently required.
  • the solenoid valves are activated in the Amount of fuel added directly to the combustion process influenced.
  • the circuit arrangement according to the in Features mentioned claim 1 has the advantage that the final stage to control the at least an electromagnetic consumer in the event of a ECU resets are securely locked. Thereby, that a control connection of each low-side switching device can be controlled by a third switching means, via which locks the low-side switching means Application of a reset signal from the control unit on Control connection of the third switching means takes place, it is ensured in a simple manner that when concerns arise of a control unit reset, the lowside switching means is safely switched off. This prevents that in the event of a reset an irregular current flow about the at least one electromagnetic Consumer can take place. Especially if the electromagnetic consumer a solenoid valve for Control of the fuel metering of an internal combustion engine is irregular fuel injections and thus uncontrolled modes of operation the internal combustion engine avoided.
  • the invention is based on an embodiment the associated drawing, which the invention Circuit arrangement shows, explained in more detail.
  • the figure shows a circuit arrangement 10 of an output stage for driving electromagnetic consumers 12, 14 and 16.
  • the electromagnetic consumers 12, 14 and 16 are magnetic injection valves of a fuel injection system for an internal combustion engine. According to the example shown, it is therefore a 3-cylinder internal combustion engine.
  • a magnetic injection valve 12, 14, 16 is assigned to each of the cylinders. If the number of cylinders of the internal combustion engine differs, fewer or more electromagnetic consumers 12, 14 or 16 are provided accordingly.
  • the electromagnetic consumers 12, 14, 16 are connected via a first switching means 18 to a voltage source 20, usually the motor vehicle battery in motor vehicles.
  • a diode 20 is connected between the switching means 18 and the electromagnetic consumers 12, 14, 16, the anode of which is connected to the switching means 18. Furthermore, there is a current measuring resistor R 1 in series with the switching means 18.
  • Connections designated by 22 in the circuit arrangement 10 lead to a motor control device for controlling the electromagnetic consumers 12, 14, 16, which is not explained in more detail in the context of the present description.
  • This control is generally known, so that it is not dealt with in more detail in the context of the present invention.
  • the switching means 18, the diode 20 and the resistor R 1 form the so-called high-side switching side for the electromagnetic consumers 12, 14 and 16.
  • the second connection of the electromagnetic consumers 12, 14 and 16 is each connected to a second switching means 24.
  • the switching means 24 are connected to the voltage source 20 via a current measuring resistor R 2 .
  • Each of the electromagnetic consumers 12, 14 and 16 is also assigned a diode 26, the anodes of which are connected to the electromagnetic consumers 12, 14 and 16, respectively.
  • the cathodes of the diodes 26 are connected on the one hand to a capacitance C 1 and on the other hand to a further switching means 28.
  • the capacitance C 1 is also connected to the resistor R 2 .
  • the switching means 28 is connected to the first connections of the electromagnetic consumers 12, 14 and 16 via a further diode 30.
  • the second switching means 24 form the lowside switching side the circuit arrangement 10.
  • the further Switching means 28 is a so-called booster switching means.
  • the switching means 18, 24 and 28 are preferably as Field effect transistors designed.
  • the first connections of the electromagnetic consumers 12, 14 and 16 are via another diode 32 connected to the voltage source 20, the Voltage source 20 here with the anode of diode 32 connected is.
  • the diode 32 serves as a freewheeling diode.
  • the circuit arrangement 10 further includes third Switching means 34, shown schematically as a switching means array 35 are shown.
  • the Switching device array comprises, for example, seven Switching means 34. Of these seven switching means 34 there are six switching means 34 for switching each of a second switching means 22 are available. To that extent can a circuit arrangement via the switching means array 35 10 for up to six electromagnetic Consumers, for example in a 6-cylinder internal combustion engine, to be served.
  • a seventh Switching means 34 'of the switching means array 35 is inverting switched.
  • the switching means array 35 is connected to an input terminal 36 via a resistor R 4 .
  • the input terminal 36 is also connected to a resistor R 5 , which on the other hand is at a potential VDD.
  • Another resistor R 6, which is connected to ground, is connected in parallel with resistor R 4 .
  • the switching means array 35 is connected to a voltage potential VCC via a resistor R 3 .
  • the resistor R 3 is also connected to the collector of the inverting switching means 34 '.
  • An emitter terminal E of the switching means array 35 is grounded.
  • the switching means 34 of the switching means array 35 are designed as npn transistors.
  • connection 36 is with a reset output of the Engine control unit connected. At connection 36 there is a signal in the control unit's reset case the voltage level "LOW” and otherwise a voltage level "HIGH” on.
  • the base connections of the switching means 34 are pulled to the potential VCC via the resistor R 3 , so that they switch on. Since the emitter connection of the switching means 34 is at ground, when the switching means 34 are switched on, the control connections (gate connections) of the second switching means 24 are also pulled to ground, so that in this case they are safely switched off, that is to say locked. Via the resistors R 4 and R 6 , which are connected as voltage switches, the voltage level is adjusted when the voltage signal “LOW” is present at the input connection 36, which may be 1.5 V, for example, so that the inverting switching means 34 when the low signal is present 'is safely switched off.
  • the arrangement of the third switching means 34 thus a simple reset of the entire power amplifier reached with the circuit arrangement 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
EP20000125641 2000-03-09 2000-11-23 Circuit de commande d'au moins une charge électromagnétique Expired - Lifetime EP1132603B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000111421 DE10011421A1 (de) 2000-03-09 2000-03-09 Schaltungsanrodnung zur Ansteuerung wenigstens eines elektromagnetischen Verbrauchers
DE10011421 2000-03-09

Publications (3)

Publication Number Publication Date
EP1132603A2 true EP1132603A2 (fr) 2001-09-12
EP1132603A3 EP1132603A3 (fr) 2002-06-05
EP1132603B1 EP1132603B1 (fr) 2005-11-02

Family

ID=7634054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000125641 Expired - Lifetime EP1132603B1 (fr) 2000-03-09 2000-11-23 Circuit de commande d'au moins une charge électromagnétique

Country Status (2)

Country Link
EP (1) EP1132603B1 (fr)
DE (2) DE10011421A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312785A3 (fr) * 2001-11-10 2006-01-25 Robert Bosch Gmbh Circuit de charge et de décharge d'éléments piézoélectriques ainsi que coupure d'un pilote de Piezo

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50311803D1 (de) * 2002-12-09 2009-09-24 Continental Automotive Gmbh Verfahren und Anordnung zum Ansteuern eines piezoelektrischen Aktors

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112477A (en) * 1977-06-06 1978-09-05 General Motors Corporation Circuit for energizing a fuel injector valve coil
GB2015843B (en) * 1978-02-27 1982-05-19 Bendix Corp Circuits for setting three levels of current in inductive loads such as solenoids
DE3213515A1 (de) * 1982-04-10 1983-10-20 Honeywell and Philips Medical Electronics B.V., 5611 Eindhoven Erregerschaltung fuer magnetventile
JPS61140114A (ja) * 1984-12-12 1986-06-27 Koushinraido Hakuyo Suishin Plant Gijutsu Kenkyu Kumiai 電磁石駆動装置
US5430601A (en) * 1993-04-30 1995-07-04 Chrysler Corporation Electronic fuel injector driver circuit
IT1296664B1 (it) * 1997-12-19 1999-07-14 Fiat Ricerche Dispositivo di comando di elettroattuatori.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312785A3 (fr) * 2001-11-10 2006-01-25 Robert Bosch Gmbh Circuit de charge et de décharge d'éléments piézoélectriques ainsi que coupure d'un pilote de Piezo

Also Published As

Publication number Publication date
EP1132603A3 (fr) 2002-06-05
EP1132603B1 (fr) 2005-11-02
DE50011505D1 (de) 2005-12-08
DE10011421A1 (de) 2001-09-13

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