| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a shift control device for an automatic transmission, preventing decline in power performance of a vehicle even when gear shift of a main transmission becomes impossible and the main transmission remains shifted to a high-speed stage side and preventing decline in over-speed and reduction in a range of speed capable of travelling even when the main transmission remains shifted to a low-speed stage side. <P>SOLUTION: The shift control device for the automatic transmission with an auxiliary transmission 20 having a plurality of shift stages connected to an output side of an engine 15 is provided with a shift control means 11 controlling a gear ratio of the main transmission 14 and the auxiliary transmission 20 in accordance with an operating condition of the vehicle by input of information (a) on the operating condition of the vehicle on which the main transmission 14 is mounted; and an auxiliary transmission control change means 21 changing shift control of the auxiliary transmission 20 to a direction in which engine 15 speed increases when the operation of the main transmission 14 is stopped at a gear ratio in the high-speed stage, and changing shift control of the auxiliary transmission 20 to a direction in which engine 15 speed decreases when the operation of the main transmission 14 is stopped at a gear ratio in the low-speed stage. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
