What are the types of automotive spark plugs?
1 Answers
Automotive spark plugs are divided into: standard spark plugs, electrode spark plugs, seat spark plugs, pole spark plugs, and surface gap spark plugs. A spark plug consists of a terminal nut, center electrode, ground electrode, metal shell, and insulator. Its working process is: 1. After ignition, the electrode generates high voltage; 2. It ignites the air-fuel mixture in the engine cylinder, causing combustion; 3. This pushes the piston, enabling the engine to operate and the vehicle to move. Spark plug working principle: The spark plug's ground electrode is connected to the metal shell, which is threaded into the engine block via the cylinder head. Through continuous electrical pulses, the spark plug generates high voltage that breaks down the air between its two electrodes, creating a spark that ignites the air-fuel mixture in the cylinder, starting the engine.