Method and device for controlling an internal combustion engine having an activated carbon fuel retention unit uses an electronically controlled valve system

摘要

An engine (200) in a vehicle having an activated carbon fuel vapor retention unit (230) is controlled using a valve arrangement (300) to isolate the fuel tank (210) while estimating the fuel vapor entering the combustion chamber from the retention unit and adjusting the engine parameters on the basis of this estimate. A method of controlling a combustion engine in a motor vehicle having a fuel vapor retention control arrangement, a fuel tank and a valve arrangement comprises estimating the portion of the fuel component from the retention store into the engine while isolating the fuel tank from either. The engine operating parameters are then adjusted on the basis of this estimated fuel constituent. An Independent claim is also included for a device for the above process.