| 摘要 |
PROBLEM TO BE SOLVED: To prevent a leakage accident and an electric shock accident from being generated by an exhaust emission control system, when the system is abnormal or when abnormality is predicted in the control system, in the control system using a high electric voltage field. SOLUTION: This discharge type exhaust emission control system 3 is arranged in an exhaust passage 2 of an engine 1 mounted on a vehicle, a high voltage is impressed from a high-voltage generator 8 to the system 3. When the voltage, light emission, a sound or the like is abnormal in the generator 8 or the system 3, an electronic controller 10 operates power supply controllers 22, 23 provided respectively in a power line 7 and/or a power line 9 to cut power supply to the generator 8 and/or the system 3 by the power line 7 and/or the power line 9 or to limit sharply it.
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