| 摘要 |
PROBLEM TO BE SOLVED: To restrain stepwise increase of the EGR valve opening degree accompanying termination of EGR cut, and thereby to avoid a problem generated at the termination of the EGR cut. SOLUTION: The control device 5 includes a sliding mode controller 51 for repetitively calculating linear input and non-linear input with reference to state variables, and a correction control part 52 for changing, according to predetermined conditions, either one of or both a switching gain and a smoothing coefficient defining the non-linear input, and rewriting the state variable by calculating backward a state variable to provide a non-linear input after the change of the same value as the non-linear input before the change. COPYRIGHT: (C)2011,JPO&INPIT
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