| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic transmission for improving fuel consumption by performing shift-up to a maximum shift stage if predetermined conditions are satisfied even if a shift stage is not the maximum shift stage on a shift map. SOLUTION: The automatic transmission is provided for performing shift in accordance with the shift map specified by a vehicle speed Vsp and a throttle opening TVO. The transmission performs shift-up to a seventh speed (S109) in the case that the vehicle speed Vsp and the throttle opening TVO exist in a shift stage region of a sixth speed on the shift map, namely, in a sixth-seventh special region which is specified by a down-shift line for performing down-shift from a shift stage of a seventh-speed as the maximum shift stage down to a shift stage of a sixth-speed and a minimum vehicle speed on an up-shift line for performing up-shift from the sixth-speed up to the shift stage of the seventh-speed (S104, 105) and such a state is continued for a predetermined time (S107). COPYRIGHT: (C)2009,JPO&INPIT
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