Selective catalytic reduction system controlling method for power train of diesel engine of e.g. hybrid vehicle, involves selecting operating condition of reducer pump according to detection of imminent transition of engine

摘要

The method involves selecting an operating condition of a reducer pump (120) according to a detection of an imminent transition of an internal combustion engine from a starting condition to a stopping condition of the internal condition engine. The reducer pump and a reducer injector (140) are arranged in an exhaust line (190) of a vehicle such as hybrid vehicle. A drain (150) is arranged for connecting the pump to the injector. The reducer pump is arranged in a selective catalytic reduction system (100).