Steuerungssystem für ein automatisches Getriebe

摘要

An automatic transmission such as a continuously variable transmission or an automatic transmission with a plurality of gear positions is controlled using a target acceleration (Go) map which contains target accelerations corresponding to first indications (e.g., the amount ( theta AP) of depression of an accelerator pedal or the engine throttle opening) representative of the driver's intention for acceleration or deceleration and second indications representative of speeds of the motor vehicle. The target acceleration map is arranged such that when each of the second indications is constant, each of the target accelerations increases as the first indication increases, at a rate which is greater if the first indication is smaller. From such a target acceleration map, a target acceleration is determined on the basis of the actual values of the first and second indications at the time, and the speed reduction ratio of the automatic transmission is controlled so that the target acceleration is achieved. In the target acceleration map, cruising speeds of the motor vehicle vary linearly as the first indications vary.