| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of suitably suppressing the temperature rise of a fuel adding valve. <P>SOLUTION: This device is so formed that a temperature raising treatment for raising the temperature of an exhaust emission control mechanism by adding a fuel from the fuel adding valve to the exhaust emission control mechanism installed in the exhaust gas passage of an internal combustion engine and a temperature suppressing treatment for suppressing the temperature rise of the fuel adding valve by injecting the fuel of an amount according to a target injection amount Tq from the fuel adding valve to an exhaust gas passage, the degree of the separation of the target injection amount from an actual injection amount of the fuel adding valve is detected, and based on the detected degree of the separation, the target injection amount Tq is set (S306). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
