What is the purpose of spark plugs in an engine ?

Spark plugs play a crucial role in the internal combustion process of an engine. Their primary purpose is to ignite the air-fuel mixture in the combustion chamber, initiating the combustion process that powers the engine. When the piston compresses the air-fuel mixture in the cylinder, the spark plug generates an electric spark at the gap between its center and ground electrode.

This spark ignites the compressed air-fuel mixture, causing a controlled explosion. The resulting rapid expansion of gases forces the piston down, turning the crankshaft and ultimately driving the vehicle. In essence, spark plugs are instrumental in converting chemical energy stored in the fuel into mechanical energy, propelling the vehicle forward.

Besides their role in combustion initiation, spark plugs also help regulate the engine’s performance and fuel efficiency. Properly functioning spark plugs contribute to smooth and efficient combustion, ensuring that the engine operates optimally. Over time, spark plugs may wear out due to exposure to high temperatures and combustion byproducts, leading to reduced efficiency and potential engine issues. Regular inspection and replacement of spark plugs are essential maintenance practices to ensure a reliable and efficient engine performance.

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