Patent ID: 6311118
Filing Date: 2001-10-30
Classification: B60K,B60W,F16H,Y10T

Abstract:
A system for controlling a speed of a vehicle having a continuously variable transmission which transmits output torque generated by an internal combustion engine mounted on the vehicle to drive wheels of the vehicle, and a cruise controller which controls the speed of the vehicle to a desired speed in response to an instruction to cruise control inputted by a vehicle operator, comprising:operating condition detecting means for detecting operating conditions of the engine and the vehicle including at least an opening of a throttle valve and the speed of the vehicle;throttle opening smoothing means for smoothing the detected opening of the throttle valve; andshift controlling means for controlling a speed ratio of the continuously variable transmission based at least on the detected opening of the throttle valve and the detected speed of the vehicle;whereinthe shift controlling means controlling the speed ratio of the continuously variable transmission based at least on the smoothed opening of the throttle valve and the detected speed of the vehicle, when the instruction to cruise control is inputted.