|
|
OM600 ENGINE ELECTRICAL 1E3-3 1. Preheating time - control relay. Control relay functions as followings : l Switching of preheating current. l Indication of preheating finish. l Control of preheating sequence. l Indication of fault. 2. Coolant temperature sensor. Coolant temperature sensor senses coolant’s temperature 3. Glow plug The glow plug parts are housing with M12 ´ 1.25 thread The heating element has a heating coil and a control coil 1. Control Coil 4. Current and temperature of glow plug l Current of glow plug While the preheating system operates, current of about 30A flows in each glow plug and temperature of heating Due to the rise of temperature, the resistance of control coil increases therefore the current is controlled to about 8~15A and that protects the glow plug from over- heating. l Temperature of glow plug The temperature of the glow plug reaches up to 900°C after about 9 seconds and up to 1,050°C after 30 |