| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the occurrence of a shock and the occurrence of deceleration G beyond an intention, when a large power source brake is suddenly caused, when fixing the gear ratio in accelerator return operation. <P>SOLUTION: When a belt type continuously variable transmission 18 is fixed to the fixed gear ratio γs, after upshifting the transmission 18 so as to decrease an input rotating speed Nin to a gear ratio fixed input rotating speed Nins corresponding to the fixed gear ratio γs (P1→P2 shifting), the transmission 18 is fixed to the fixed gear ratio γs (arrow b). Thus, an engine rotating speed NE decreases by an upshift amount as compared with a case where a gear ratio γ just before the accelerator return operation is maintained as it is (arrow c), an engine brake is reduced, and the occurrence of the deceleration G beyond the intention of a driver is restrained. Inertia in the driving direction is generated as the engine rotating speed NE decreases by an upshift, the engine brake is alleviated (offset), and the shock is restrained. <P>COPYRIGHT: (C)2013,JPO&INPIT |
