Motor vehicle power control means

摘要

A power control system for a motor vehicle engine and fluid pressure automatic transmission wherein the engine power control setting is adjusted to bring about correspondence between the actual driveline power output and the requested power output indicated by the accelerator pedal position. A follow up control system adjusts the transmission throttle valve cable according to the accelerator pedal position except under engine operating conditions associated with reduced fuel efficiency at which time the follow up control system is interrupted and the throttle valve cable is adjusted to initiate a downshift in the transmission. The follow up control system is reestablished when the available power output in the higher gear is sufficient to satisfy the requested power output in an efficient manner.