FR2415918A1 - Overheating protection circuit for IC engine ignition transistor - has temp. sensor on power switch controlling hold time of timing circuit - Google Patents

Overheating protection circuit for IC engine ignition transistor - has temp. sensor on power switch controlling hold time of timing circuit

Info

Publication number
FR2415918A1
FR2415918A1 FR7831375A FR7831375A FR2415918A1 FR 2415918 A1 FR2415918 A1 FR 2415918A1 FR 7831375 A FR7831375 A FR 7831375A FR 7831375 A FR7831375 A FR 7831375A FR 2415918 A1 FR2415918 A1 FR 2415918A1
Authority
FR
France
Prior art keywords
temp
hold time
sensor
circuit
power switch
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
FR7831375A
Other languages
French (fr)
Other versions
FR2415918B1 (en
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 FR2415918A1 publication Critical patent/FR2415918A1/en
Application granted granted Critical
Publication of FR2415918B1 publication Critical patent/FR2415918B1/fr
Granted legal-status Critical Current

Links

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
    • F02P3/0407—Opening or closing the primary coil circuit with electronic switching means
    • F02P3/0435—Opening or closing the primary coil circuit with electronic switching means with semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
    • H03K17/0826—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in bipolar transistor switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching

Landscapes

  • 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)

Abstract

The protective turn-off circuit turns off a power transistor switch in the primary circuit of an i.c. engine's ignition system. A temp. sensor (17) is mounted on the power switch (13) and controls the hold time of the timing circuit (16) so that the switch is turned off when its temp. exceeds a safe limit. The relation between temp and hold time is hyperbolic. The timing circuit controls the switching of the switch.
FR7831375A 1978-01-27 1978-11-06 Overheating protection circuit for IC engine ignition transistor - has temp. sensor on power switch controlling hold time of timing circuit Granted FR2415918A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782803557 DE2803557A1 (en) 1978-01-27 1978-01-27 DISCONNECTING DEVICE FOR A CONTROLLABLE SEMICONDUCTOR ELEMENT

Publications (2)

Publication Number Publication Date
FR2415918A1 true FR2415918A1 (en) 1979-08-24
FR2415918B1 FR2415918B1 (en) 1984-09-21

Family

ID=6030547

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7831375A Granted FR2415918A1 (en) 1978-01-27 1978-11-06 Overheating protection circuit for IC engine ignition transistor - has temp. sensor on power switch controlling hold time of timing circuit

Country Status (3)

Country Link
DE (1) DE2803557A1 (en)
FR (1) FR2415918A1 (en)
IT (1) IT1166597B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757177A2 (en) * 1995-08-04 1997-02-05 Hitachi, Ltd. Ignition system of internal combustion engine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2060053B (en) * 1979-10-05 1983-10-05 Hughes Microelectronics Ltd Ignition circuits for internal combustion engines
JPH0713911B2 (en) * 1986-05-16 1995-02-15 株式会社東芝 Induction heating cooker
JP2811872B2 (en) * 1990-02-26 1998-10-15 富士電機株式会社 Semiconductor device protection circuit
DE10260650B4 (en) * 2002-12-23 2006-06-08 Infineon Technologies Ag Circuit breaker assembly and shutdown method therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105239B (en) * 1959-07-11 1961-04-20 Siemens Ag Electric ignition device for internal combustion engines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868554A (en) * 1973-12-26 1975-02-25 Gen Electric Current limit system for DC motor control
DE2533083C2 (en) * 1975-07-24 1986-01-09 Robert Bosch Gmbh, 7000 Stuttgart Ignition system for internal combustion engines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105239B (en) * 1959-07-11 1961-04-20 Siemens Ag Electric ignition device for internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757177A2 (en) * 1995-08-04 1997-02-05 Hitachi, Ltd. Ignition system of internal combustion engine
EP0757177A3 (en) * 1995-08-04 1998-10-28 Hitachi, Ltd. Ignition system of internal combustion engine

Also Published As

Publication number Publication date
IT7919665A0 (en) 1979-01-26
DE2803557A1 (en) 1979-08-02
IT1166597B (en) 1987-05-05
FR2415918B1 (en) 1984-09-21

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse