Patent ID: 8169092
Filing Date: 2012-05-01
Classification: F02B,F02D,F02G,H02P,Y02E,Y02T

Abstract:
1. A cogeneration system having a generator adapted to be connectable to an AC power feed line between a commercial power network and an electrical load, an internal combustion engine for driving the generator such that exhaust heat of the engine is supplied to a thermal load and an actuator that opens and closes a throttle valve of the engine, comprising: a power demand detector that detects power demand of the electrical load; a thermal demand detector that detects thermal demand of the thermal load; an engine speed controller that controls operation of the actuator in response to the detected power demand so as to control speed of the engine; an ignition timing controller that controls ignition timing of the engine in response to the detected thermal demand, wherein the ignition timing controller retards the ignition timing when the detected thermal demand is greater than a second predetermined amount; and a fuel amount increaser that increases an amount of fuel to be supplied to the engine when the ignition timing is retarded.