Patent ID: 7210452
Filing Date: 2007-05-01
Classification: F02D

Abstract:
1. A control apparatus of an internal combustion engine, comprising: a battery ancillary to the internal combustion engine; a control unit for receiving power from the battery and controlling the internal combustion engine; and a throttle valve drive device for receiving power from the battery and driving a throttle valve of the internal combustion engine, the control apparatus of the internal combustion engine regulating the valve aperture of the throttle valve by controlling the throttle valve drive device while the internal combustion engine is running, wherein while the internal combustion engine is stopped the control unit receives power from the battery and performs a probability determination of whether or not the probability of the throttle valve freezing is high, and when while the internal combustion engine is stopped it determines that the probability of the throttle valve freezing is high the control unit, before the throttle valve reaches a throttle-frozen state, controls the throttle valve drive device so that the throttle valve drive device receives power from the battery and executes a freeze protection operation of oscillating the valve aperture of the throttle valve.