Definition

Noun: A component in an internal combustion engine's ignition system. It is a type of induction coil that transforms the low-voltage direct current (DC) from the vehicle's battery into the high-voltage pulses needed to create a spark at the spark plugs.

Usage

The term "ignition coil" refers specifically to this electrical transformer. It is a countable noun.

Examples: * A faulty ignition coil can cause engine misfires. * The mechanic replaced the ignition coil to fix the starting problem. * Modern engines often have one ignition coil per cylinder.

Advanced Usage

• "Coil-on-plug" (COP): A modern ignition system design where each spark plug has its own dedicated mounted directly on top of it.
• In technical diagnostics, one might refer to testing the

Variants and Related Words

• Coil Pack: A module containing multiple in a single unit, often serving two or more cylinders.
• Ignition Module: An electronic control unit that triggers the to fire. It is a separate but closely related component.

Synonyms

• Spark coil
• Induction coil (in the specific context of automotive ignition systems)

Related Components (Not Synonyms)

• Spark Plug: The component that receives the high voltage from the to create the spark.
• Distributor: In older ignition systems, a component that routes the high voltage from a single to each spark plug in sequence.

Noun

1. an induction coil that converts current from a battery into the high-voltage current required by spark plugs