| 摘要 |
PROBLEM TO BE SOLVED: To provide a control apparatus that can ensure high control accuracy by compensating a control error appropriately and quickly even if the control error temporarily increases owing to, for example, decreased reliability of the detection of reference parameters other than a controlled variable. SOLUTION: An air-fuel ratio controller 100 of the control apparatus 1 multiplies an air-fuel ratio error estimate Eaf etc. by connecting weight functions Wcp<SB>i</SB>to calculate modified errors Weaf<SB>i</SB>, calculates such values Dlift_bs<SB>i</SB>as bring the values Weaf<SB>i</SB>to zero, multiplies the values Dlift_bs<SB>i</SB>etc. by the connecting weight functions Wcp<SB>i</SB>to calculate values Dlift_ls<SB>i</SB>, adds a value Dlift, which is the sum of the values Dlift_ls<SB>i</SB>, to a value Liftin to calculate a value Liftin_mod, calculates a first air intake estimate Gcyl_vt for air-fuel ratio feed-forward control according to the value Liftin_mod, calculates an air-fuel ratio correction factor KAF for air-fuel ratio feedback control, and calculates a corresponding fuel injection quantity TOUT. COPYRIGHT: (C)2008,JPO&INPIT
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