Common faults and solutions of SCR system, old drivers quickly collect
SCR system mainly includes urea water tank, conveying device, metering device, injection device, catalytic converter, temperature and exhaust sensor, etc. The function of urea nozzle as a spraying device is to spray urea solution according to the instructions of the controller. Due to the influence of many factors, urea nozzles are prone to blockage and crystallization. Once the urea nozzle is crystallized, the nozzle will completely lose the spray effect. After the ECU computer control system i