EP0332728A1 - Circuit de commande d'un système d'allumage transistorisé - Google Patents

Circuit de commande d'un système d'allumage transistorisé Download PDF

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Publication number
EP0332728A1
EP0332728A1 EP19880104241 EP88104241A EP0332728A1 EP 0332728 A1 EP0332728 A1 EP 0332728A1 EP 19880104241 EP19880104241 EP 19880104241 EP 88104241 A EP88104241 A EP 88104241A EP 0332728 A1 EP0332728 A1 EP 0332728A1
Authority
EP
European Patent Office
Prior art keywords
comparator
voltage
circuit
capacitor
state
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Withdrawn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
EP19880104241
Other languages
German (de)
English (en)
Inventor
Wolfgang Dipl.-Ing. Vogel
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
Priority to EP19880104241 priority Critical patent/EP0332728A1/fr
Publication of EP0332728A1 publication Critical patent/EP0332728A1/fr
Withdrawn legal-status Critical Current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
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • F02P3/045—Layout of circuits for control of the dwell or anti dwell time
    • F02P3/0453—Opening or closing the primary coil circuit with semiconductor devices

Definitions

  • This is a complex circuit which is arranged to reduce dwell angle with increasing speed during initial acceleration after start up and increase dwell angle with increasing speed at high engine speeds.
  • the present invention provides a circuit for controlling the dwell angle in a transistorised igni­tion system having an induction-type pulse generator, the circuit including a comparator arranged to compare the voltage from the induction-type pulse generator with a reference voltage and to switch between two states to provide output pulses for controlling the dwell angle, and a capacitor arranged to vary the reference voltage such that the length of the output pulses varies in dependence on the pulse generator frequency, characterised in that a reference bias voltage is provided and in that the output from the comparator is used to control the reference voltage input to the comparator such that when the comparator is in one state the reference voltage is held at a fixed level and when the comparator is in its other state the reference voltage is a combination of the reference bias voltage and a voltage derived from the charging or discharging of the capacitor whereby to limit the period the comparator is in said other state.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP19880104241 1988-03-17 1988-03-17 Circuit de commande d'un système d'allumage transistorisé Withdrawn EP0332728A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19880104241 EP0332728A1 (fr) 1988-03-17 1988-03-17 Circuit de commande d'un système d'allumage transistorisé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19880104241 EP0332728A1 (fr) 1988-03-17 1988-03-17 Circuit de commande d'un système d'allumage transistorisé

Publications (1)

Publication Number Publication Date
EP0332728A1 true EP0332728A1 (fr) 1989-09-20

Family

ID=8198815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880104241 Withdrawn EP0332728A1 (fr) 1988-03-17 1988-03-17 Circuit de commande d'un système d'allumage transistorisé

Country Status (1)

Country Link
EP (1) EP0332728A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838672A (en) * 1973-08-23 1974-10-01 Gen Motors Corp Internal combustion engine ignition system
US4429235A (en) * 1980-09-11 1984-01-31 Telefunken Electronic Gmbh Input stage for an ignition control circuit
US4434779A (en) * 1981-02-27 1984-03-06 Nippondenso Co., Ltd. Circuit for controlling the primary dwell time of ignition transformer
US4440130A (en) * 1980-07-15 1984-04-03 Tokyo Shibaura Denki Kabushiki Kaisha Ignition control device
US4552118A (en) * 1983-03-17 1985-11-12 Nec Corporation Control circuit for controlling output pulse width using negative feedback signal
EP0191418A2 (fr) * 1985-02-11 1986-08-20 Nippondenso Co., Ltd. Système d'allumage pour moteur à combustion interne

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838672A (en) * 1973-08-23 1974-10-01 Gen Motors Corp Internal combustion engine ignition system
US4440130A (en) * 1980-07-15 1984-04-03 Tokyo Shibaura Denki Kabushiki Kaisha Ignition control device
US4429235A (en) * 1980-09-11 1984-01-31 Telefunken Electronic Gmbh Input stage for an ignition control circuit
US4434779A (en) * 1981-02-27 1984-03-06 Nippondenso Co., Ltd. Circuit for controlling the primary dwell time of ignition transformer
US4552118A (en) * 1983-03-17 1985-11-12 Nec Corporation Control circuit for controlling output pulse width using negative feedback signal
EP0191418A2 (fr) * 1985-02-11 1986-08-20 Nippondenso Co., Ltd. Système d'allumage pour moteur à combustion interne

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Legal Events

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

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Designated state(s): DE FR IT SE

17P Request for examination filed

Effective date: 19900215

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

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Effective date: 19931228

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Effective date: 19931001