Exhaust line pollutant emissions controlling method for internal combustion engine e.g. diesel engine, of vehicle i.e. commercial heavy weight vehicle, involves estimating value of volume of deducted or reintroduced gases

摘要

The method involves deducting part of exhaust gases in downstream of a gas purification element (9) by a deducting unit i.e. temporary gases storing tank (11). The exhaust gases are deducted in a deducting unit downstream (12) and/or the deducted gasses are reintroduced in an upstream (13) of the purification element. A value of volume of the deducted or reintroduced gases is estimated according to a characteristic parameter of an operation condition of an internal combustion engine (1) or exhaust line (8). The deducting unit comprises a flexible pocket covered with a PVC film. An independent claim is also included for a device for controlling pollutant emissions in an exhaust line of an internal combustion engine.