- the starting of burning of a substance
Satisfactory ignition depends on the quality of the fuel.
- the moment, in an internalcombustion engine, when a spark fromthe spark plug causes the fuel/air mixture to burn
Ignition should occur just before top-dead-centre.
- an electrical system, usually powered by a battery or magneto, that provides the spark to ignite the fuel mixture in an internalcombustion engine
Ignition problems are a source of many engine failures.
- a switch that activates the ignition system
the key is in the ignition the key is in its position in the ignition lock