Liquid ammonia supply system for vehicle exhaust gas catalyses has interchangeable reservoirs and a valve system coupling a reservoir valve to one in the vehicle

摘要

The reservoirs (31,32) are automatically interchanged by a control unit (61) when the pressure falls below a limit. Liquid ammonia is passed through an evaporator (53) where it vaporizes and passes through a pressure control valve (54) before passing to the dosing unit (64).