Method of controlling transmission for vehicle

摘要

The present invention is directed to a method and apparatus for controlling an automatic transmission. A selector selects a first speed change range or a second speed change range in which the first and second speed change ranges effect speed changes at different points as a function of vehicle operating conditions. A microprocessor having a memory stores predetermined speed change patterns for the first and second speed change ranges and sensors are coupled to the microprocessor for sensing at least two vehicle operating conditions. The microprocessor controls the operation of the transmission in accordance with the vehicle operating conditions and the state of the selector. A selectively operable inhibiting device inhibits the transmission from operating in the maximum speed stage when the transmission is operating in the second speed change range.