Ignition system
An ignition system is described for an internal combustion engine comprising: electronic pick-up means for providing first and second pulses whose polarities are different from each other; ignition control circuit means for generating ignition pulses in response to the first and second pulses; ignition coil means for causing a spark discharge on a spark plug, the ignition coil means having a primary winding; power semiconductor means connected with the primary winding and being responsive to the ignition pulses from the ignition control circuit means for normally periodically providing signals to the primary winding for causing periodic spark discharges; and inhibit circuit means responsive to each first pulse from the electronic pick-up means for generating a constant time duration pulse in response to each first pulse. The inhibit circuit means includes (a) switch circuit means connected with the power semiconductor means for allowing the power semiconductor means to apply signals to the primary winding when the second pulse is within the period of a constant time duration pulse and (b) suppresses the signals applied to the primary winding of the ignition coil means. The power semiconductor means does not occur within the period of the constant time duration pulse so as to inhibit spark discharge when the speed of the engine is below a predetermined value which is lower than the normal idle speed of the engine.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4672941
- OSTI ID:
- 6299621
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330101* -- Internal Combustion Engines-- Spark-Ignition
CONTROL EQUIPMENT
CONTROL SYSTEMS
ELECTRIC DISCHARGES
ELECTRIC SPARKS
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
HEAT ENGINES
IGNITION
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
PULSES
SEMICONDUCTOR DEVICES
SIGNALS
SPARK IGNITION ENGINES
SPEED REGULATORS
SWITCHING CIRCUITS
VELOCITY