NGK glow plugs must perform well even under the worst of conditions. Diesel car drivers and automobile manufacturers value and appreciate NGK SPARK PLUG’s expertise around the world.
Many years of glow plug experience
> 260 part numbers available for European markets
86% coverage of vehicles in operation in Europe (source: TecDoc)
80 D-Power* part numbers for faster stock rotation *available in some markets only
Glow plugs need to perform well under extremely harsh conditions.
The self-ignition process must be reached even when cold or frost starting. This is why additonal heat must be introduced to the combustion chamber. NGK glow plugs master this process of pre-glowing perfectly. In that sense, the glow plug functions like an immersion heater. It is introducing electrical energy and heating it up to extremely high temperatures of up to 1350°C.
Metal rod glow plugs are equipped with a heating coil in a glow rod made of heat-resistant metal.
A specific material – magnesium oxide – in the interior of this glow rod, protects the heating coil from vibrations and shocks. Magnesium oxide is also an outstanding thermal conductor. This is why the heat that is produced quickly dissipates outwards.
There are three main groups:
1. Standard rod glow plugs
2. Self-regulating rod glow plugs
3. AQGS rod glow plugs.
This glow plug was developed by NGK SPARK PLUG to enable automotive manufacturers to comply with ever-stricter emissions standards.
One of the goals of these standards is to reduce the compression ratio in diesel engines. NHTC glow plugs reach a temperature of 1,000°C in less than two seconds. It can after-glow for more than ten minutes at temperatures of up to 1,350°C.
The ceramic high-temperature glow plug (“NHTC glow plug”, “New High Temperature Ceramic”) has a fully ceramic heating element.