| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an SCR system that can detect an abnormality even if connection between an ignition switch and a DCU is electrically cut off by disconnection or the like after key-on is performed once. <P>SOLUTION: The SCR system includes: the DCU (dosing control unit) 126 for controlling an injection quantity of urea water; and a warning unit 129 for warning a driver when an engine E rotates and the DCU 126 is powered off. The DCU 126 is provided with a DCU power control part 128 for powering off the DCU 126 when it does not receive a key-on signal from the ignition switch 127. <P>COPYRIGHT: (C)2012,JPO&INPIT |
