| 摘要 |
PROBLEM TO BE SOLVED: To prevent the deterioration of traveling performance by improving a shift tolerance. SOLUTION: This shift control device for an automatic transmission executing a shift from a present shift stage to a target shift stage by selectively fastening or releasing a plurality of friction elements comprises a shift control means performing a shift in a first shift mode, a present thermal load calculating means calculating present thermal load states of the friction elements, first calorific value predicting means (S24, S31) predicting calorific values in the friction elements before the start of the shift when the shift is performed in the first shift mode, and first thermal load predicting means (S25, S32) predicting the thermal load states of the friction elements upon shift completion based on a calorific value predicted by the first calorific value predicting means. The shift control means performs the shift in a second shift mode with the calorific value smaller than that in the first shift mode when the thermal load states upon the shift completion predicted by the first thermal load predicting means are brought into prescribed states (S28, S38). COPYRIGHT: (C)2009,JPO&INPIT
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