| 摘要 |
A method for detecting a leakage of a reducing agent spraying system, which comprises a reducing agent tank, an injector, a line formed by the reducing agent tank and the injector, and a pumping module installed on the line. The method for detecting a leakage of a reducing agent spraying system includes: a step of detecting a pressure generated when a pump of the pumping module pumps a reducing agent into an injector; a step of generating a pressure fall warning signal if the detected pressure is lower than the first set value; a step of operating the pump over the set load and stopping the injector if the detected pressure is between the first set value and the second set value, wherein the second set value is greater than the first set value; a step of operating a heater heating a reducing agent of the pumping module for a set time; and a step of determining that the reducing agent is leaked from the line between the pump module and the injector if the temperature of the reducing agent of the pumping module is lower than the set value. |
