Control device for speed change of automatic transmission

Abstract

Abstract PURPOSE:To further reduce a speed change shock by providing a means of detecting the progress of both speed changes of both first and second transmission parts at the time of speed change in which both transmission parts are simultaneouly operated. CONSTITUTION:At the time of speed change in which both first and second transmission parts are simultaneously operated, the progresses of both speed changes of the first and second transmission parts are detected and, based on the detected result of the progress, first, the speed change of the first transmission part is started and after that, the speed change of the second transmission part is started. Hence, e.g., when all the speed changes are up shift, the speed change is always started from high gear shift. Accordingly, any inconvenience such as a speed change is started in a direction opposite to the direction of attaining the speed change giving a sense of incompatibility to a driver, can be avoided.

Inventors

• 👤 Kunihiro Iwatsuki
• 👤 Koji Taniguchi

Bibliographic Details