Method for controlling a selective catalytic reduction system for a vehicle and corresponding vehicle

摘要

The method involves selecting an operating state of a reducing agent pump (120) of a selective catalyst reduction system (100) of a vehicle based on proximity of a phase state of a reducing agent (110) e.g. urea, with a vapor state, in a predetermined zone of the selective catalyst reduction system and the detection of stop of a heat engine of the vehicle. Pressure of the pump is maintained if the reducer is at phase state close to the vapor state. The pump is deactivated if the reducer is at phase state that is remote from the vapor state and the pump is a sealed pump. An independent claim is also included for a vehicle comprising an exhaust line.