Patent ID: 7988595

Claim:
A control device for an automatic transmission for a vehicle, comprising: a torque converter interposed between an output shaft of an engine and an input shaft of said automatic transmission, said torque converter having a lock-up clutch for mechanically connecting said output shaft and said input shaft in a direct manner; lock-up clutch engagement control means for engaging said lock-up clutch by a predetermined engagement force in a predetermined operational region determined by a throttle angle and a vehicle speed; and a shift map having a slip region for said lock-up clutch set in relation to a plurality of shift characteristics preliminarily set according to vehicle speeds, said slip region being defined by a downshift line and a slip start line deviated from said downshift line by a predetermined range of throttle angle toward lower throttle angles; wherein when the throttle angle falls within said slip region before kickdown, the slip control of said lock-up clutch is performed by said lock-up clutch engagement control means.