Metering device for introducing reducing agent solution into exhaust pipe of vehicle, has heat accumulator having annular solid structure for receiving heat input into outlet, to limit rise in outlet temperature

摘要

The metering device (10) has outlet (12) through which the reducing agent solution is introduced in the exhaust gas, and heat accumulator which surrounds outlet. The heat accumulator has annular solid structure (16) having heat storage capacity for receiving heat input into the outlet, to limit a rise in temperature of the outlet to predetermined threshold temperature.