| 摘要 |
PURPOSE: To improve the responsibility and reduce the change gear shock by temporarily fastening a clutch fastened at a high speed side before a band brake is fastened when lubricant is at low temperature when frictional force of the band brake varies largely aiming at a fact that the frictional force of the clutch at fastening is practically not affected by temperature of the lubricant and linking to a desired gear shift speed. CONSTITUTION: A solenoid (SOL) pattern is set to three-speed (step S4) when a shift up signal is outputted (step S1), temperature of lubricant THOIL is less than desired temperature KTHOIL12 (step S2) and throttle opening TVO is between KTVO12L and KTVO12H (step S3). The SOL pattern is set to two- speed (step S7) when two-speed switching gear ratio KG32 is read (step S5) and current gear ratio gear is smaller than the gear ratio KG 32 (step S6). |
