| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of increasing exhaust gas temperature without generating fluctuation of output torque when the exhaust gas temperature is increased. <P>SOLUTION: This fuel injection control device is provided with a post-processing device 30 to purify exhaust gas by action of catalysts, an exhaust gas temperature detecting means 34 to detect exhaust gas temperature, a means to decide basic fuel injection quantity and basic fuel injection timing based on an operating state of an internal combustion engine E, and a control means 12 to control the fuel injection quantity and the fuel injection timing. The control means 12 retards actual fuel injection timing behind the basic fuel injection timing to increase exhaust gas temperature when exhaust gas temperature is lower than catalyst activity temperature of the post-processing device 30. The control means 12 sets actual fuel injection quantity above the basic fuel injection quantity to compensate reduction of output torque by retarding in retarding the actual fuel injection timing from the basic injection timing. <P>COPYRIGHT: (C)2004,JPO</p> |
