GLOW PLUGS
Product Information
What is a Glow Plug & What Does it do?
Diesel engines, unlike petrol engines which rely on a spark to ignite the air-fuel mixture, function due to the auto-ignition of diesel fuel when subjected to high pressures. Under high pressure, the temperature of the diesel fuel increases to a point where the fuel self-combusts. In cold weather however, this temperature is not always achieved and glow plugs assist by heating the air-fuel mixture to assist in cold starting.
Put simply, glow plugs are small heaters.
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Although the glow plug is a familiar engine component, glow plug terminology often varies. The diagram below identifies the major components of a glow plug and their correct terminology.
Metal Sheathed Glow Plugs
- Standard
- Rapid Glow (Quick Start)
- QGS (Quick Glow System)
- SRM (Self Regulating Metal)
NB: None of the above parts are interchangeable
Ceramic Glow Plugs
- SRC (Self Regulating Ceramic)
