What is the purpose of the ignitor plugs in an ignition system?

• A. Registers engine temperature
• B. Creates an air gap for voltage arc
• C. Ignites the fuel-air mixture
• D. Regulates fuel flow

Answer: (C)

The purpose of ignitor plugs in an ignition system is to ignite the fuel-air mixture within the engine's combustion chamber. When the ignition system sends a high voltage through the ignitor plug, it creates a spark that effectively ignites the compressed fuel-air mixture, leading to combustion. This process is crucial for the engine to operate efficiently, as the combustion of the fuel-air mixture generates the necessary power to drive the engine.

In the context of engine operation, this ignition must occur at precise timing to ensure optimal performance and minimize emissions. The ignitor plugs are thus integral components in ensuring reliable engine start-up and maintaining consistent power output during operation.