Patent ID: 6185494
Filing Date: 2001-02-06
Classification: B60W,F16H,Y10T

Abstract:
A computer program product for controlling a vehicular transmission system comprising a multiple-speed transmission driven by a fuel-controlled engine having a maximum output torque, said transmission having a plurality of acceptable start ratios and a plurality of unacceptable start ratios, a manually operated shift selector for shifting said transmission in accordance with an established shift pattern, an engine controller for controlling fueling of said engine in response to command signals, said engine controller having a mode of operation effective to limit engine output torque, a system controller for receiving input signals and processing same according to predetermined logic rules to determine values of control parameters indicative of vehicle operating conditions, including vehicle speed and engaged transmision ratio, and to issue command output signals to system actuators, including said engine controller, said program having codes for:determining as a function of the values of said control parameters indicative of vehicle operating conditions if said transmission is engaged in an unacceptable start ratio when vehicle speed is below a predetermined speed value; andif said transmission is engaged in an unacceptable start ratio when vehicle speed is less than said predetermined speed value, issuing command output signals to said engine controller to limit engine output torque to a predetermined engine torque value.