Urea dosing system for waste gas purification catalyzer of internal combustion engine has urea substance tank, pump and has a feeder line and connecting element whereby connecting element is surrounded by coil heater

摘要

Urea dosing system has urea substance tank for receiving of urea solution, a pump for pumping the urea solution from tank to catalyst. The feeder line connects the discharge opening of the urea substance tank with the connection flange (20) of pump whereby the connecting element (21) is fastened in connection flange. The connecting element is surrounded by the coil heater (30). An independent claim is also included for the coil heater.