| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller for an internal combustion engine having a variable valve train for properly controlling an operation condition of the internal combustion engine while satisfactorily preventing occurrence of knocking in the internal combustion engine having the variable valve train varying at least closing timing of an intake valve. SOLUTION: An intake variable valve train 34 varying closing timing of an intake valve 30 is installed. The intake variable valve train 34 is provided with a first control mode, in which closing timing IVC of the intake valve 30 is controlled on an advance side beyond a predetermined range including an intake bottom dead center BDC, and a second control mode, in which the closing timing IVC of the intake valve 30 is controlled on a retard side beyond the predetermined range. In a comparatively low load side area, the IVC variable control (the first control mode) for varying the intake valve 30 closing timing IVC according to a load is selected. On a comparatively high load side, the intake retarded closing control (the second control mode) for controlling the intake valve 30 by sufficiently retarded closing timing IVC is selected. COPYRIGHT: (C)2008,JPO&INPIT
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