GB1497346A - Opto-electronic ignition systems for internal combustion engines - Google Patents

Opto-electronic ignition systems for internal combustion engines

Info

Publication number
GB1497346A
GB1497346A GB6028/75A GB602875A GB1497346A GB 1497346 A GB1497346 A GB 1497346A GB 6028/75 A GB6028/75 A GB 6028/75A GB 602875 A GB602875 A GB 602875A GB 1497346 A GB1497346 A GB 1497346A
Authority
GB
United Kingdom
Prior art keywords
switching
pairs
photo
ignition
darlington
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.)
Expired
Application number
GB6028/75A
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.)
Lumenition Ltd
Original Assignee
Lumenition Ltd
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 Lumenition Ltd filed Critical Lumenition Ltd
Priority to GB6028/75A priority Critical patent/GB1497346A/en
Publication of GB1497346A publication Critical patent/GB1497346A/en
Priority to US06/016,369 priority patent/USRE30418E/en
Expired 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

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

1497346 Ignition systems LUMENITION Ltd 13 Feb 1975 6028/75 Heading F1B An ignition system includes a photo-detector 2 which will conduct when exposed to radiation, a radiation source 1, an opaque element 3, having apertures or slots therein, positioned between the radiation source and the photo-detector, means for rotating the opaque element in timed relation to the engine revolutions and a transistorized ignition circuit having a plurality of switching Darlington pairs Q1, Q2 connected between the photodetector and an ignition coil 4 and switching in inverse relation to one another, the first Darlington pair Q 1 of the circuit also switching in inverse relation to the photo-detector 2 whereby on energization or de-energization of the photodetector the transistorized ignition circuit causes the fast switching of the primary winding of the ignition coil 4 to thereby induce a spark voltage in the coil secondary winding. The chain of Darlington pairs can have two, four or six pairs for one mode of switching or three, five or seven pairs for the reverse mode of switching. The photo-transistor and the Darlington pair or pairs, other than possibly the power Darlington pair, may be formed on the same monolithic chip. Specifications 1219833, 1330453 and 1410782 are referred to.
GB6028/75A 1975-02-12 1975-02-12 Opto-electronic ignition systems for internal combustion engines Expired GB1497346A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB6028/75A GB1497346A (en) 1975-02-12 1975-02-12 Opto-electronic ignition systems for internal combustion engines
US06/016,369 USRE30418E (en) 1975-02-12 1979-03-01 Opto-electronic ignition systems for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6028/75A GB1497346A (en) 1975-02-12 1975-02-12 Opto-electronic ignition systems for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1497346A true GB1497346A (en) 1978-01-05

Family

ID=9807107

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6028/75A Expired GB1497346A (en) 1975-02-12 1975-02-12 Opto-electronic ignition systems for internal combustion engines

Country Status (2)

Country Link
US (1) USRE30418E (en)
GB (1) GB1497346A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009957A1 (en) * 1978-10-02 1980-04-16 Lumenition Limited Four lead monolithic Darlington and opto-electronic ignition system incorporating it
GB2178531A (en) * 1985-07-05 1987-02-11 Lumenition Ltd Improvements in light sensitive electronic switches

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710131A (en) * 1971-01-08 1973-01-09 Lumenition Ltd Transistorized ignition systems
US3868938A (en) * 1971-02-11 1975-03-04 Alan Neville Trass Transistor ignition system
GB1388058A (en) * 1972-06-22 1975-03-19 Bowen D D Ignition systems for internal combustion engines
US3937193A (en) * 1973-11-19 1976-02-10 Ford Motor Company Electronic ignition system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009957A1 (en) * 1978-10-02 1980-04-16 Lumenition Limited Four lead monolithic Darlington and opto-electronic ignition system incorporating it
GB2178531A (en) * 1985-07-05 1987-02-11 Lumenition Ltd Improvements in light sensitive electronic switches
GB2178531B (en) * 1985-07-05 1989-07-12 Lumenition Ltd Improvements in light sensitive electronic switches

Also Published As

Publication number Publication date
USRE30418E (en) 1980-10-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19950211