Exhaust line for use with nitrogen oxide selective catalytic reduction system in diesel engine of thermal vehicle, has non-return valve preventing increase of particles toward reservoir, and heat exchanger placed around valve to heat valve

摘要

The line (40) has an exhaust pipe (44) discharging exhaust gases to atmosphere. A tube (46) supplies reducing agent to the pipe from a reservoir. The tube is fixed by one of its ends at the pipe and supports a snap-on element (52). A non-return valve prevents increase of particles toward the reservoir. A heat exchanger is placed around the valve for heating the valve. The valve comprises interfaces that facilitate connection of the exchanger. A drain (50) is connected to the tube by the snap-on element. An independent claim is also included for a vehicle.