Spark ignition systems for internal combustion engines

Patent · Tue Aug 26 04:00:00 EDT 1980

OSTI ID:6743004

Gol, G; Hill, W F

An internal combustion engine spark ignition system is provided which ensures that sparks are inhibited if the engine temperature exceeds a maximum safe level. The ignition circuit includes an input transistor which is switched on and off by an engine shaft transducer. The input transistor controls charging and discharging of a capacitor the voltage on which determines whether switching of the input transistor causes a spark to be produced via an output amplifier and ignition coil. A temperature sensing element determines both the rate at which the capacitor can charge and the final voltage to which it can be charged.

• Assignee: Lucas Industries Ltd (United Kingdom)
• Patent Number(s): US 4218998
• OSTI ID: 6743004
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
CAPACITORS
DESIGN
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRIC SPARKS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
SEMICONDUCTOR DEVICES
SPARK IGNITION ENGINES
TEMPERATURE DEPENDENCE
TEMPERATURE MEASUREMENT
TRANSDUCERS
TRANSISTORS