What Is A Spark Plug?

The spark plug is an important component of the gasoline engine ignition system. It can introduce high-voltage electricity into the combustion chamber and cause it to jump across the electrode gap to generate sparks, thereby igniting the combustible mixture in the cylinder. It is mainly composed of wiring nut, insulator, wiring screw, center electrode, side electrode and shell. The side electrode is welded on the shell.
Introduction
The spark plug, commonly known as the burner, is used to discharge the pulsed high-voltage electricity sent from the high-voltage wire (burner wire), breakdown the air between the two electrodes of the spark plug, and generate electric sparks to ignite the mixed gas in the cylinder. The main types are: quasi-type spark plugs, edge body protruding spark plugs, electrode type spark plugs, seat type spark plugs, pole type spark plugs, surface spark plugs, etc.
The spark plug is installed on the side or top of the engine. The early spark plug was connected to the distributor by the cylinder wire. In the past ten years or so, the engines on cars have basically been changed to the ignition coil directly connected to the spark plug. The working voltage of the spark plug is at least 10,000V. The high-voltage electricity is generated by the ignition coil from 12V electricity and then passed to the spark plug.