| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a speed change control device of a vehicle that can promptly evade from resonance when vibration is generated in the vehicle under the control of lowering of Ne in the engine during cruising, and can suppress fluctuation of vehicle speed. <P>SOLUTION: The speed change control device includes: an engine speed lowering control part 236 that sets the target engine speed Np to the predetermined cruising rotation speed when determined that the vehicle is in a cruise traveling state, and the engine speed Ne is lowered toward the target engine speed Np while reducing the gear ratio by a continuously variable transmission 106, since the vehicle speed V becomes constant; and a first vibration suppression control part 240 and a second vibration suppression control part 242 that control so that vehicle body vibration value Sa may become less than prescribed value Sth by controlling the engine speed Ne by the continuously variable transmission 106, when a vibration suppression control determination part 238 determines that the vehicle body vibration value Sa is less than the prescribed value Sth under the control of decreasing of the engine speed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
