| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of suppressing the generation of PMs in a so-called dual injection system more effectively. <P>SOLUTION: In the fuel injection control device, an intake valve temperature Tv is obtained with parameters including an in-cylinder intake air amount Mc, an engine rotation frequency Ne, a cooling water temperature THW or the like by using a map or the like (S410). Furthermore, a piston temperature Tp is obtained with parameters including the in-cylinder intake air amount Mc, the engine rotation frequency Ne, the cooling water temperature THW or the like by using a map or the like (S420). It is then determined whether or not the intake valve temperature Tv is lower than a prescribed temperature Tv0 (S430) and whether or not the piston temperature Tp is lower than a prescribed temperature Tp0 (S430). If the intake valve temperature Tv is lower than the prescribed temperature Tv0 (Yes in S430) and the piston temperature Tp is lower than the prescribed temperature Tp0 (Yes in S440), a port injection ratio PFIr is set higher. <P>COPYRIGHT: (C)2009,JPO&INPIT |
