| 摘要 |
PROBLEM TO BE SOLVED: To improve combustion condition of an internal combustion engine by inhibiting or preventing slippage of actual valve timing against target valve timing in a control device 30 of an electromagnetic drive type valve train 1 used for the internal combustion engine. SOLUTION: When target valve timing determined according to an operation condition of the internal combustion engine is obtained, feed forward control setting instruction timing of a valve element based on the target valve timing and an estimated delay time is executed and feed back control setting actual delay time in a previous cycle as the estimated delay time of a following cycle is executed. Valve timing (open, close) is set at time when a valve body 10 reaches a position separated from a predetermined position according to the shock absorbing height of a shock absorber 13. Consequently, actual delay time is accurately detected in the feed back control and instruction timing can be appropriately set in the feed forward control. COPYRIGHT: (C)2009,JPO&INPIT |
