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EP0197960A1 - Arrangement de circuit pour la regulation du courant par un consommateur electrique, en particulier electromagnetique - Google Patents

Arrangement de circuit pour la regulation du courant par un consommateur electrique, en particulier electromagnetique

Info

Publication number
EP0197960A1
EP0197960A1 EP85904605A EP85904605A EP0197960A1 EP 0197960 A1 EP0197960 A1 EP 0197960A1 EP 85904605 A EP85904605 A EP 85904605A EP 85904605 A EP85904605 A EP 85904605A EP 0197960 A1 EP0197960 A1 EP 0197960A1
Authority
EP
European Patent Office
Prior art keywords
circuit arrangement
current control
voltage
effect transistor
field effect
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Withdrawn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
EP85904605A
Other languages
German (de)
English (en)
Inventor
Immanuel Krauter
David Belzen Van
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 EP0197960A1 publication Critical patent/EP0197960A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
    • 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
    • F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
    • F02D2041/2075—Type of transistors or particular use thereof

Definitions

  • Circuit arrangement for controlling the current through an electrical, in particular electromagnetic consumer
  • the invention is a circuit arrangement for controlling the current through a consumer according to the preamble of the main claim.
  • the device described does not behave optimally, particularly in connection with its short-circuit strength. So results If, for example, the field effect transistor is switched on and there is a sudden short circuit of the field effect transistor to the battery voltage, the device's reaction time is much too long until the field effect transistor is switched off, so that it is, for example, thermally overloaded.
  • the circuit arrangement according to the invention for controlling the current through an electrical, in particular electromagnetic consumer with the features of the main claim has the advantage over the prior art described that it enables much shorter reaction times after short circuits in the circuit arrangement. This is achieved according to the invention in that the circuit arrangement can only drive a current through the electrical consumer with the aid of a forced switch-on.
  • the exemplary embodiment described is a circuit arrangement for controlling the current through an electrical consumer.
  • the circuit arrangement according to the invention is suitable for controlling and / or regulating the current through an electromagnetic consumer, e.g. a solenoid valve.
  • the circuit arrangement described can be used e.g. in connection with internal combustion engines, in particular when injecting fuel into the combustion chamber of the internal combustion engine with the aid of a solenoid valve.
  • the circuit arrangement according to the invention is not limited to these special applications, but can be used wherever quick reactions to short circuits and overloads are required.
  • an electromagnetic consumer 10 and a field effect transistor 11 form a series connection, the electromagnetic consumer 10 being connected to a battery voltage U Batt and the field effect transistor 11 being connected to ground. It is also possible to use a bipolar transistor instead of the field effect transistor. From the connection point of the electromagnetic consumer
  • a resistor 1 4 is on the one hand with the battery voltage
  • Resistor 15 with the mentioned control connection of the field effect transistor 11 and directly with the output of an operational amplifier 16. From the connection point of the electromagnetic consumer 10 and the field effect transistor
  • the 11 also leads a line via a return resistor 17 to the inverting input of operational amplifier 1 6.
  • the series connection of two voltage divider resistors 18 and 19 is between a stabilized voltage U stab and ground.
  • the connection point of the two voltage divider resistors 18 and 19 is connected to the non-inverting input of the operational amplifier 16.
  • the resistor 17 connected to the inverting input of the operational amplifier 16 is also connected via a diode 20 to the stabilized voltage U stab .
  • the parallel connection of a resistor 21 and a capacitance 22 leads from the inverting input of the operational amplifier 16 to a connection point to which the variable voltage U plus is applied.
  • the voltage at the inverting input of the operational amplifier 16 is designated U NEG , while the voltage from the connection point of the electromagnetic consumer 10 and the field effect transistor 11 to ground, that is to say the voltage at the field effect transistor 11 itself, is identified by the abbreviation U DS .
  • the diode 12 and the zener diode 13 have the task of protecting the field effect transistor 11 from the high voltage peaks which occur when the current is switched off by the electromagnetic consumer 10.
  • the diode 20 serves to limit the signal.
  • the resistors 1 4 and 15 the task of driving the field-effect transistor 11 together with the operational amplifier 16.
  • U Batt can be recognized quickly and reliably and the field effect transistor 11 switched off.
  • the time from the occurrence of the short circuit until the field-effect transistor 11 is switched off is determined, among other things, by the capacitance 22, as was already the case when it was forcibly switched on.
  • the delay time from the occurrence of the short circuit to the switching off of the field effect transistor 11 is so small that a risk to the field effect transistor 11 is thereby excluded.
  • the circuit arrangement according to the invention is therefore in the circuit arrangement according to the invention to a device that has two operating states, namely "current flow” or “no current flow".
  • the operating state “no current flow” is a stable operating state that can only be exited with the help of the forced switch-on via the capacitance 22.
  • the operating state "current flow”, on the other hand, is an unstable operating state, which is only maintained under certain conditions, U pulse is low, and within certain limits, U DS and thus current flow is not too great.
  • the circuit arrangement according to the invention is therefore always on the so-called safe side, since in the event of any malfunctions the circuit arrangement changes quickly and safely from the unstable to the stable operating state.

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)
  • Electronic Switches (AREA)
  • Dc-Dc Converters (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Un arrangement de circuit pour la régulation du courant par un consommateur électrique (10), en particulier électromagnétique, dans lequel un transistor à effet de champ (11), relié au consommateur, est utilisé comme organe de contrôle et de régulation du courant, et dans lequel le transistor à effet de champ est amené à l'état conductif au moyen d'un système de connexion automatique. L'exemple donné décrit une réalisation de l'arrangement du circuit, dans laquelle est présenté comme exemple un système automatique de connexion capacitive.
EP85904605A 1984-10-05 1985-09-20 Arrangement de circuit pour la regulation du courant par un consommateur electrique, en particulier electromagnetique Withdrawn EP0197960A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3436456 1984-05-10
DE19843436456 DE3436456A1 (de) 1984-10-05 1984-10-05 Schaltungsanordnung zur steuerung des stroms durch einen elektrischen, insbesondere elektromagnetischen verbraucher

Publications (1)

Publication Number Publication Date
EP0197960A1 true EP0197960A1 (fr) 1986-10-22

Family

ID=6247109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85904605A Withdrawn EP0197960A1 (fr) 1984-10-05 1985-09-20 Arrangement de circuit pour la regulation du courant par un consommateur electrique, en particulier electromagnetique

Country Status (5)

Country Link
US (1) US4776314A (fr)
EP (1) EP0197960A1 (fr)
JP (1) JPS62500412A (fr)
DE (1) DE3436456A1 (fr)
WO (1) WO1986002127A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3727498A1 (de) * 1987-08-18 1989-03-02 Hella Kg Hueck & Co Vorrichtung zum steuern der leistung eines elektrischen verbrauchers
FR2630276B1 (fr) * 1988-04-14 1992-07-03 Bendix Electronics Sa Circuit de commande d'une charge inductive
DE4029794A1 (de) * 1990-08-18 1992-02-20 Bosch Gmbh Robert Verfahren und einrichtung zur ansteuerung eines elektromagnetischen verbrauchers
DE4130710A1 (de) * 1991-09-14 1993-03-18 Kloeckner Humboldt Deutz Ag Steuerung elektromagnetischer ventile
DE4130711A1 (de) * 1991-09-14 1993-03-18 Kloeckner Humboldt Deutz Ag Steuerung elektromagnetischer ventile
DE4130712A1 (de) * 1991-09-14 1993-03-18 Kloeckner Humboldt Deutz Ag Steuerung elektromagnetischer ventile
US5687050A (en) * 1995-07-25 1997-11-11 Ficht Gmbh Electronic control circuit for an internal combustion engine
RU2149274C1 (ru) * 1997-05-06 2000-05-20 Государственное предприятие Научно-исследовательский институт машиностроения Импульсный ключ управления электроклапаном
CN101436083B (zh) * 2008-12-11 2010-06-09 电子科技大学 一种高速恒流输出驱动电路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132768A (en) * 1978-04-07 1979-10-16 Nippon Electric Co Solenoid driving circuit with abnormalty monitoring circuit
DE2900420A1 (de) * 1979-01-08 1980-07-24 Bosch Gmbh Robert Einrichtung zum steuern des stromes durch einen elektromagnetischen verbraucher, insbesondere durch ein elektromagnetisch betaetigbares einspritzventil einer brennkraftmaschine
FR2458106A1 (fr) * 1979-05-31 1980-12-26 Thomson Csf Circuit electronique de commande pour electrovanne
GB2103443A (en) * 1981-07-31 1983-02-16 Philips Electronic Associated Solenoid drive circuit
DE3135805A1 (de) * 1981-09-10 1983-03-24 Robert Bosch Gmbh, 7000 Stuttgart Elektrische schaltungsanordnung in verbindung mit einem kfz-steuergeraet
US4485342A (en) * 1982-07-27 1984-11-27 General Electric Company Load driving circuitry with load current sensing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8602127A1 *

Also Published As

Publication number Publication date
DE3436456A1 (de) 1986-04-10
JPS62500412A (ja) 1987-02-19
US4776314A (en) 1988-10-11
WO1986002127A1 (fr) 1986-04-10

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19860604

AK Designated contracting states

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Designated state(s): DE FR IT

17Q First examination report despatched

Effective date: 19870529

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19871015

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BELZEN VAN, DAVID

Inventor name: KRAUTER, IMMANUEL