| 摘要 |
<p>PURPOSE:To eliminate deterioration of fuel consumption and emission, and combustion-eliminate particulates effectively. CONSTITUTION:An exhaust emission control device for a diesel engine is provided with a filter 12 with a catalyst which is interposed in the exhaust pipe 17 of a diesel engine 11 and for collecting particulates in exhaust gas, a pressure difference detecting means 15 for detecting a pressure difference between the inlet and outlet of the filter 12, and an operating condition detecting means 16. Also the device is provided with an intake throttle valve 13 which is formed as a temperature raising means for raising the temperature of exhaust gas which is led on the filter 12 to the combustion temperature of the particulates, a collecting amount calculating means 141 for calculating the collecting amount of the particulates by signals from the pressure difference detecting means 15 and the operating condition detecting means 16, and a temperature raising control unit 142 for operating a temperature raising means in a plurality steps and continuously according to the collecting amount.</p> |
