Patent ID: 6282465
Filing Date: 2001-08-28
Classification: B60W,F16H,Y10T

Abstract:
A driving force control system for an automotive vehicle having an accelerator pedal and a powertrain including an internal combustion engine, comprising:a vehicle speed sensor detecting an operating parameter indicative of a speed of the vehicle and generating a vehicle speed signal indicative of said detected operating parameter;an accelerator pedal depression sensor detecting an amount of depression of the accelerator pedal by the vehicle operator and generating an accelerator pedal opening signal indicative of said detected amount of depression;an ordinary target driving force generator determining an ordinary target driving force in response to said amount of depression of the accelerator pedal by the vehicle operator as indicated by said accelerator pedal opening signal and said vehicle speed indicated by said vehicle speed signal and generating an ordinary target driving force signal indicative of said determined ordinary target driving force, said ordinary target driving force being a predetermined target value of dirving force required to keep the vehicle rolling over the surface of a flat road that has 0% gradient;a running resistance increment generator determining an increment in running resistance from a standard resistance that is indicated by said ordinary target driving force and generating a running resistance increment signal indicative of said determined increment in running resistance;a corrected target driving force generator receiving said ordinary target driving force signal, said vehicle speed signal and said running resistance increment signal,said corrected target driving force generator being operative to determine whether or not said vehicle speed signal is in a predetermined state,said corrected ordinary driving force generator being operative to generate a corrected target driving force signal by correcting said ordinary target driving force signal based on said running resistance increment signal upon determination that said vehicle speed signal is outside of said predetermined state,said corrected ordinary driving force generator being operative to keep setting said ordinary target driving force signal as said corrected target driving force signal upon determination that said vehicle speed signal is in said predetermined state.