Control system for an automatic transmission having shift points based on part throttle positions which are used when engine speed is lowered below an adjustable minimum engine speed setting

摘要

A control system and method is provided for changing the shiftpoints of a transmission for part throttle shifting. A input section delivers a actual gear signal, a engine speed signal and a torque converter output speed signal A controller receives the input signals and varies the transmission shiftpoints relative to the received signals. The controller also delivers signals to the transmission to upshift, downshift or that no shift is necessary.