| 摘要 |
PROBLEM TO BE SOLVED: To enhance the accuracy of learning and prevent the learning value from approaching an engine stall unavoidable range due to erroneous recognition in the case of learning control of L/U (lock-up) capacity during coast in L/U control for an automatic transmission. SOLUTION: A controller 9 carries out learning control of L/U capacity, but in the case of learning during coast, carries out the leaning control only when the completion of L/U is confirmed during drive just before the leaning control. For example, if the L/U capacity learning control is carried out only when the completion of L/U is confirmed by an L/U completion confirming logic having an operation timing irrelevant to the learning logic during drive just before the operation is shifted into a coast condition, it can be determined that occurrence of a slip is caused by insufficient L/U capacity during coast, which is set in accordance with a result of cost of lowering L/U capacity during coast. |
