FR2418336A1 - CIRCUIT FOR INSTALLING THREE LEVELS OF CURRENT CURRENT, ESPECIALLY IN THE COIL OF AN INJECTOR - Google Patents

CIRCUIT FOR INSTALLING THREE LEVELS OF CURRENT CURRENT, ESPECIALLY IN THE COIL OF AN INJECTOR

Info

Publication number
FR2418336A1
FR2418336A1 FR7904545A FR7904545A FR2418336A1 FR 2418336 A1 FR2418336 A1 FR 2418336A1 FR 7904545 A FR7904545 A FR 7904545A FR 7904545 A FR7904545 A FR 7904545A FR 2418336 A1 FR2418336 A1 FR 2418336A1
Authority
FR
France
Prior art keywords
current
coil
levels
circuit
attraction
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Withdrawn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
FR7904545A
Other languages
French (fr)
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.)
Bendix Corp
Original Assignee
Bendix Corp
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
Priority claimed from US05/881,327 external-priority patent/US4176387A/en
Priority claimed from US05/881,326 external-priority patent/US4234903A/en
Priority claimed from US05/881,443 external-priority patent/US4225898A/en
Application filed by Bendix Corp filed Critical Bendix Corp
Publication of FR2418336A1 publication Critical patent/FR2418336A1/en
Withdrawn legal-status Critical Current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
    • 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
    • F02D2041/2017—Output circuits, e.g. for controlling currents in command coils using means for creating a boost current or using reference switching
    • 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
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value

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)
  • Control Of Voltage And Current In General (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

Ce circuit réduit la consommation en permettant au courant de la bobine d'augmenter normalement jusqu'à ce que l'injecteur passe à l'état de travail, puis en agissant de façon à connecter et déconnecter alternativement la bobine de son alimentation pour que l'injection reste à l'état de travail avec un courant qui varie entre deux niveaux, tous deux supérieurs au courant de chute mais inférieurs au courant d'attraction. Lorsque le courant d'attraction est atteint, une bascule modifie des signaux de mesure du courant de façon telle que le plus élevé des niveaux intermédiaires de courant produise un signal de mesure équivalent à celui du courant d'attraction. De plus, pendant les périodes où la bobine est déconnectée, et en présence d'une impulsion de commande, la bobine se décharge dans un circuit à constante de temps lente, tandis qu'elle se décharge dans un circuit à constante de temps rapide à la fin de l'impulsion. Application aux systèmes d'injection directe de carburant pour moteurs à combustion interne.This circuit reduces consumption by allowing the coil current to increase normally until the injector goes into the working state, then acting to alternately connect and disconnect the coil from its power supply so that the The injection remains in the working state with a current which varies between two levels, both greater than the fall current but less than the attraction current. When the attraction current is reached, a flip-flop modifies current measurement signals such that the highest of the intermediate current levels produces a measurement signal equivalent to that of the attraction current. Moreover, during the periods when the coil is disconnected, and in the presence of a control pulse, the coil discharges in a slow time constant circuit, while it discharges in a fast time constant circuit at the end of the impulse. Application to direct fuel injection systems for internal combustion engines.

FR7904545A 1978-02-27 1979-02-22 CIRCUIT FOR INSTALLING THREE LEVELS OF CURRENT CURRENT, ESPECIALLY IN THE COIL OF AN INJECTOR Withdrawn FR2418336A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US88132878A 1978-02-27 1978-02-27
US05/881,327 US4176387A (en) 1978-02-27 1978-02-27 Inductive drive circuit for setting three different levels of load current including a downshift delay
US05/881,326 US4234903A (en) 1978-02-27 1978-02-27 Inductive load driver circuit effecting slow hold current delay and fast turn off current decay
US05/881,443 US4225898A (en) 1978-02-27 1978-02-27 Inductive driver circuit effecting slow and fast current decay

Publications (1)

Publication Number Publication Date
FR2418336A1 true FR2418336A1 (en) 1979-09-21

Family

ID=27505971

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7904545A Withdrawn FR2418336A1 (en) 1978-02-27 1979-02-22 CIRCUIT FOR INSTALLING THREE LEVELS OF CURRENT CURRENT, ESPECIALLY IN THE COIL OF AN INJECTOR

Country Status (5)

Country Link
JP (1) JPS54126955A (en)
DE (1) DE2907200A1 (en)
FR (1) FR2418336A1 (en)
GB (1) GB2015843B (en)
IT (1) IT1111837B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2489885A1 (en) * 1980-09-08 1982-03-12 Tokyo Shibaura Electric Co EXCITATION CIRCUIT FOR FUEL INJECTOR
FR2501899A1 (en) * 1981-03-12 1982-09-17 Lucas Industries Ltd CIRCUIT FOR CONTROLLING THE OPERATION OF AN ELECTROMAGNETIC DEVICE COMPRISING A SOLENOID AND AN ARMATURE
FR2547628A1 (en) * 1983-06-18 1984-12-21 Bosch Gmbh Robert Computer controlled drive circuit for solenoid
FR2559211A1 (en) * 1984-01-31 1985-08-09 Lucas Ind Plc DRIVE CIRCUIT FOR THE CONTROL OF THE CURRENT FLOWING IN THE SOLENOID OF AN ELECTROMAGNETIC DEVICE IN RESPONSE TO A CONTROL SIGNAL

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326234A (en) 1980-06-06 1982-04-20 Westinghouse Electric Corp. Electrically held power relay circuit with reduced power dissipation
DE3047488A1 (en) * 1980-12-17 1982-07-22 Brown, Boveri & Cie Ag, 6800 Mannheim ELECTRONIC CIRCUIT ARRANGEMENT FOR AN ELECTROMAGNETIC SWITCHGEAR
DE3112621A1 (en) * 1981-03-30 1982-10-21 Elektroteile GmbH, 7772 Uhldingen-Mühlhofen Circuit arrangement for driving electromagnets
JPS5851233A (en) * 1981-09-21 1983-03-25 Hitachi Ltd Fuel injection valve driving circuit
JPS60143610A (en) * 1983-12-29 1985-07-29 Nec Home Electronics Ltd Solenoid driving circuit
DE3417102A1 (en) * 1984-05-09 1985-11-14 Diehl GmbH & Co, 8500 Nürnberg METHOD FOR CONTROLLING A MONOSTABLE RELAY AND ARRANGEMENT FOR IMPLEMENTING THE METHOD
DE3437155A1 (en) * 1984-10-10 1986-04-17 Robert Bosch Gmbh, 7000 Stuttgart Switching device for switching the current through an inductive load
EP0472607B1 (en) * 1989-05-19 1999-07-21 Orbital Engine Company (Australia) Pty. Ltd. Method and apparatus for controlling the operation of a solenoid
US5267545A (en) * 1989-05-19 1993-12-07 Orbital Engine Company (Australia) Pty. Limited Method and apparatus for controlling the operation of a solenoid
US6031707A (en) * 1998-02-23 2000-02-29 Cummins Engine Company, Inc. Method and apparatus for control of current rise time during multiple fuel injection events
DE10011421A1 (en) * 2000-03-09 2001-09-13 Bosch Gmbh Robert Circuit for driving at least one electromagnetic load has third switch via which locking of low side switch is performed by applying controller reset signal to third switch's control connection

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345595A1 (en) * 1976-03-26 1977-10-21 Bosch Gmbh Robert INSTALLATION FOR THE CONTROL, WITH A REGULATED CURRENT, OF ELECTROMAGNETIC MANEUVERS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345595A1 (en) * 1976-03-26 1977-10-21 Bosch Gmbh Robert INSTALLATION FOR THE CONTROL, WITH A REGULATED CURRENT, OF ELECTROMAGNETIC MANEUVERS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2489885A1 (en) * 1980-09-08 1982-03-12 Tokyo Shibaura Electric Co EXCITATION CIRCUIT FOR FUEL INJECTOR
FR2501899A1 (en) * 1981-03-12 1982-09-17 Lucas Industries Ltd CIRCUIT FOR CONTROLLING THE OPERATION OF AN ELECTROMAGNETIC DEVICE COMPRISING A SOLENOID AND AN ARMATURE
FR2547628A1 (en) * 1983-06-18 1984-12-21 Bosch Gmbh Robert Computer controlled drive circuit for solenoid
FR2559211A1 (en) * 1984-01-31 1985-08-09 Lucas Ind Plc DRIVE CIRCUIT FOR THE CONTROL OF THE CURRENT FLOWING IN THE SOLENOID OF AN ELECTROMAGNETIC DEVICE IN RESPONSE TO A CONTROL SIGNAL

Also Published As

Publication number Publication date
GB2015843A (en) 1979-09-12
IT7920489A0 (en) 1979-02-23
JPS54126955A (en) 1979-10-02
GB2015843B (en) 1982-05-19
DE2907200A1 (en) 1979-08-30
IT1111837B (en) 1986-01-13

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Legal Events

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