Patent ID: 6374812
Filing Date: 2002-04-23
Classification: F02D,F02M

Abstract:
A method of regenerating an activated-carbon canister in a tank ventilation system of an internal combustion engine adsorbing gaseous hydrocarbons, the method which comprises:flushing the activated-carbon canister in an idle operation of the internal combustion engine, during which the internal combustion engine is driven without lambda control; conducting a flushing flow with hydrocarbons from the activated-carbon canister into an intake tract of the internal combustion engine downstream from a throttle element in the intake tract, and feeding the flushing flow to a combustion process; reducing a fuel quantity to the internal combustion engine with an idle controller controlling the internal combustion engine by a differential to compensate for a hydrocarbon mass flow delivered with the flushing flow; and evaluating the differential and calculating a loading level of the activated-carbon canister.