Quasi-type spark plug: the insulator skirt is slightly retracted into the end face of the case, and the side electrode is outside the end face of the case, which is the most widely used.
The gap between the spark plug electrodes has a great influence on the work of the spark plug.
In the standard of spark plugs, the thermal value is usually used to characterize the thermal characteristics of the spark plug.
It is an electric light source lamp, an improved type of incandescent lamp, was developed in 1960.
The gas discharge lamp is abbreviated as HID, which uses high-voltage electricity to break down the inert gas in the bulb to glow.
Among solid-state light sources, LEDs are used as representatives. Previously, LEDs were only used in signal lights, but with the development of technology, LEDs will also be used in headlights.