Metal pin-type glow plugs

Not all glow plugs are the same: they differ in terms of the materials used and the design. There are specific types for each engine – such as steel or ceramic glow plugs.

Metal pin-type glow plugs are equipped with a “heating coil” in a glow pencil made of heat-resistant metal. A ceramic material – magnesium oxide – in the interior of this glow rod protects the heating coil from vibrations and shocks.

There are standard glow plugs and a wide variety of quick start glow plugs that can reach a temperature of 1,000 degrees in as little as two seconds. Such glow plugs require a special control unit for regulation of the power supply.  Also, there are self-regulating metal pin-type glow plugs, which can partially control the current and require almost no external control.