ignition system
Definition
Noun: The system in an internal-combustion engine responsible for initiating the combustion of the fuel-air mixture. It typically consists of components such as a battery, ignition coil, distributor, spark plugs, and associated wiring.
Usage
The term "ignition system" is used specifically to describe the entire assembly that generates and delivers a high-voltage spark to the engine's cylinders at the correct time.
Examples
- A faulty ignition system can prevent a car from starting.
- Modern cars often have a distributorless ignition system.
- The mechanic is diagnosing a problem with the engine's ignition system.
Advanced Usage
- Electronic Ignition System: A modern type that uses electronic controls instead of mechanical points to trigger the spark, improving reliability and efficiency.
- Direct Ignition System (DIS): A system where each spark plug has its own ignition coil, eliminating the need for a distributor.
Variants and Related Words
- Ignition (noun): The act or process of igniting; the starting of combustion. Often used more broadly but is the core concept of the system.
- Turn the key to the "on" position to activate the ignition.
- Ignition coil (noun): A component that transforms the battery's low voltage to the high voltage needed to create a spark.
- Ignition timing (noun): The precise point when the spark plug fires relative to the piston's position in the cylinder.
Synonyms
- Ignition: (when referring to the system's function)
- Spark system: (informal, descriptive)
Related Phrases
- Ignition switch: The switch that activates the vehicle's electrical system, including the ignition system.
- Ignition key: The key used to operate the ignition switch.
Noun
-
the mechanism that ignites the fuel in an internal-combustion engine
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