What is the structure of the engine spark plug

Spark plugs are composed of metal, ceramics, glass and other materials, and these materials have different properties, and the key hopes to produce reasonable and regular spark plugs must make full use of these properties.

　　

The spark plug is also called the burner, and its structural parts mainly include a wire nut, an insulator, a wire screw, a center electrode, a side electrode, and a shell, and the side electrode is directly welded to the shell. It is an important component of the gasoline engine ignition system. It can not only introduce high-voltage electricity into the combustion chamber, but also allow it to generate sparks in the gap between the electrodes, so that the combustible mixture in the cylinder can be ignited. Spark plugs are usually divided into quasi-type spark plugs, edge-protruding spark plugs, surface-flash spark plugs, pole-type spark plugs, electrode-type spark plugs, and seat-type spark plugs. According to common sense, spark plugs are usually installed on the top or side of the car engine. A long time ago, spark plugs were directly connected by distributors and cylinder lines. However, this situation has changed in the past ten years. The engine on the car has basically been changed so that the ignition coil is directly connected to the spark plug. Under normal circumstances, the working voltage of the spark plug is at least 10,000 volts, and the high-voltage electricity is generated by twelve volts of electricity by the ignition coil, and then transmitted to the spark plug.