Patent ID: 6647937
Filing Date: 2003-11-18
Classification: F02D,F02P

Abstract:
A glow plug energization controlling device for a preheating apparatus of a diesel engine, comprising:a plurality of glow plugs which are connected in parallel, and which are connectable via a key switch to a battery, and connectable via a relay to a neutral point of an alternator to be driven by the diesel engine, and to which battery voltage is applied at a time of starting the diesel engine, and voltage at the neutral point is applied at a time of turning the relay on while driving after starting; an engine speed sensor that detects an engine speed of the diesel engine; an exhaust temperature sensor that detects an exhaust temperature from the diesel engine; and a controller for turning the relay on when, after starting is completed, the exhaust temperature is lower than a set temperature and the engine speed is within a poor combustion set range.