GB1414888A - Electronic ignition system - Google Patents

Electronic ignition system

Info

Publication number
GB1414888A
GB1414888A GB4688673A GB4688673A GB1414888A GB 1414888 A GB1414888 A GB 1414888A GB 4688673 A GB4688673 A GB 4688673A GB 4688673 A GB4688673 A GB 4688673A GB 1414888 A GB1414888 A GB 1414888A
Authority
GB
United Kingdom
Prior art keywords
switching circuit
circuit means
capacitor
current source
direct current
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
GB4688673A
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of GB1414888A publication Critical patent/GB1414888A/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
    • F02P3/045—Layout of circuits for control of the dwell or anti dwell time
    • F02P3/0453—Opening or closing the primary coil circuit with semiconductor devices

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

1414888 Ignition systems MOTOROLA Inc 8 Oct 1973 [20 Nov 1972] 46886/73 Heading F1B An ignition system includes first switching circuit means 36 with an input and an output and operable between an on and an off condition with the output thereof coupled with an ignition coil 14 for alternately energizing and collapsing the field in the ignition coil, second switched circuit means 26 operable between an on and an off condition, control means (not shown) connected to the input of the second switching means and controlling the same between the on and off condition in direct relation to the engine RPM a capacitor 34 having a first terminal connected with the output of the second switching circuit means 26 and a second terminal connected with the input of the first switching circuit means 36, and a first direct current source battery (not shown) and a resistor 27 connected to one of the first and second terminals of the capacitor, and a second direct current source battery (not shown) and a resistor 47 connected to the other of the terminals of the capacitor. The second switching circuit means is operated to one of the on and off conditions by the control means to charge the capacitor 34, through the first direct current source to operate the first switching circuit means to one of the on and off conditions to energize the ignition coil, the second switching circuit means being further operated to the other one of the on and off conditions by the control means to discharge the capacitor through the second direct current source to operate the first switching circuit means to the other one of the on and off conditions to collapse the field in the ignition coil to cause an ignition spark. Resistive means 5 1 is coupled from the first switching circuit means to the second switching circuit means to hold the second switching circuit means in the other one of the on and off conditions thereof with the first switching circuit means in the other one of the on and off conditions thereof. The ratio of current passing through the first direct current source to the current passing through the second direct current source at engine RPM above cranking speed is such that the capacitor charges to an amount less than the total capacity thereof prior to the discharge of the same thereby providing energizing of the ignition coil for a constant percentage of the total period between ignition sparks, whereas at engine cranking speed the frequency of operation of the second switching circuit means permits the capacitor to completely charge through the first direct current source to provide a constant off time of the current through the ignition coil at such cranking speed. As shown the first and second switching circuit means 36, 26 comprise first and second transistors respectively. Preferably a magnetic pick-up device (not shown) produces an output which is applied to the input terminals 19 and 20. The pick-up may be of the type disclosed in USA Specification 3390668.
GB4688673A 1972-11-20 1973-10-08 Electronic ignition system Expired GB1414888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US308125A US3871347A (en) 1972-11-20 1972-11-20 Constant dwell ignition system

Publications (1)

Publication Number Publication Date
GB1414888A true GB1414888A (en) 1975-11-19

Family

ID=23192657

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4688673A Expired GB1414888A (en) 1972-11-20 1973-10-08 Electronic ignition system

Country Status (7)

Country Link
US (1) US3871347A (en)
JP (2) JPS4981730A (en)
DE (1) DE2357482C3 (en)
FR (1) FR2207530A5 (en)
GB (1) GB1414888A (en)
IT (1) IT994461B (en)
SE (1) SE396119B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55592B2 (en) * 1974-04-30 1980-01-09
DE2429431C2 (en) * 1974-06-19 1983-04-28 Robert Bosch Gmbh, 7000 Stuttgart Ignition system for internal combustion engines
DE2452023C2 (en) * 1974-11-02 1982-12-02 Robert Bosch Gmbh, 7000 Stuttgart Ignition system for internal combustion engines
FR2294564A1 (en) * 1974-12-12 1976-07-09 Ducellier & Cie IMPROVEMENT OF ELECTRONIC IGNITION INPUT DEVICES
JPS51126835U (en) * 1975-04-07 1976-10-14
JPS51162126U (en) * 1975-06-18 1976-12-23
DE2527725C3 (en) * 1975-06-21 1979-10-18 Volkswagenwerk Ag, 3180 Wolfsburg Circuit arrangement for internal combustion engine ignition devices
DE2549586C3 (en) * 1975-11-05 1979-03-29 Robert Bosch Gmbh, 7000 Stuttgart Ignition device for internal combustion engines
US4047513A (en) * 1975-11-17 1977-09-13 Solitron Devices, Inc. Ignition system with gas discharge tube circuit
JPS5316137A (en) * 1976-07-29 1978-02-14 Chikushiyou Ka Electronic ignition apparatus for gasoline internal combustion engine
US4106447A (en) * 1977-04-22 1978-08-15 General Motors Corporation Engine spark timing system with retard means and minimum burn timer
JPS5472232U (en) * 1977-10-31 1979-05-23
US4625704A (en) * 1985-06-28 1986-12-02 Teledyne Industries, Inc. Electronic ignition system
DE10260321B4 (en) * 2002-12-20 2016-10-20 Volkswagen Ag Circuit arrangement for radio interference suppression of a motor vehicle ignition system
ITTO20120927A1 (en) * 2012-10-19 2014-04-20 Eldor Corp Spa PLASMA IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3253163A (en) * 1963-12-20 1966-05-24 Gen Motors Corp Semiconductor internal combustion engine ignition system
US3357416A (en) * 1965-10-11 1967-12-12 Gen Motors Corp Transistorized ignition system having an integrating circuit
DE1539172B1 (en) * 1966-08-27 1972-03-09 Bosch Gmbh Robert SIGNAL GENERATOR FOR AN ELECTRONIC IGNITION SYSTEM
FR94998E (en) * 1968-01-25 1970-02-27 Compteurs Comp D Static ignition advance correction device.
US3587551A (en) * 1968-10-29 1971-06-28 Solitron Devices Electronic iginition circuit
FR2030968A5 (en) * 1969-02-12 1970-11-13 Bosch
US3605713A (en) * 1970-05-18 1971-09-20 Gen Motors Corp Internal combustion engine ignition system
JPS5114976Y1 (en) * 1970-06-03 1976-04-20
GB1347975A (en) * 1970-06-27 1974-02-27 Lucas Industries Ltd Speed limitting systems for internal combustion engines
DE2244781C3 (en) * 1972-09-13 1979-03-22 Robert Bosch Gmbh, 7000 Stuttgart Ignition system for internal combustion engines

Also Published As

Publication number Publication date
JPS54147334U (en) 1979-10-13
IT994461B (en) 1975-10-20
DE2357482B2 (en) 1977-11-24
FR2207530A5 (en) 1974-06-14
DE2357482A1 (en) 1974-06-12
DE2357482C3 (en) 1978-07-20
SE396119B (en) 1977-09-05
JPS4981730A (en) 1974-08-07
US3871347A (en) 1975-03-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee