PURGING DEVICE FOR DURING THE IDLE STOP OF AN INTERNAL COMBUSTION ENGINE

Disclosed is an engine control unit intended to prevent fuel vapors from a fuel tank from being released to the atmosphere and causing degradation of gas emission performance. In order to fulfill the object, a control unit according to an aspect of this invention includes means for discharging the fuel from a purging device constructed to adsorb the fuel vapors that rise from the fuel tank, and discharge the adsorbed fuel vapors into an air intake pipe, to an upstream side of a catalyst provided in an exhaust pipe, and when the control unit stops the engine that is running idle, the unit drives the discharge means to accelerate purification of the fuel vapors by sending the vapors to the catalyst under an active state immediately after the engine stop.