Patent ID: 8004099
Filing Date: 2011-08-23
Classification: F02D,Y02E

Abstract:
1. An apparatus for controlling operation of a cogeneration system equipped at least with a generation unit having a generator connectable to an AC power feed line between a commercial power network and an electrical load and an internal combustion engine for driving the generator, and a heat exchanger that exchanges heat with coolant of the engine with exhaust heat from the engine to warm up the coolant to be used for producing hot air or water for a thermal load, comprising: an exhaust gas temperature sensor that detects temperature of exhaust gas passing the heat exchanger; a second temperature sensor that detects temperature of a case that houses the generation unit and the heat exchanger; a corrector that corrects a predetermined value to a corrected value using the detected temperature in the case; a temperature comparator that compares the detected exhaust gas temperature with the corrected value; and an operation stopper that stops the operation of the cogeneration system when the detected exhaust gas temperature is found to be less than the corrected value.