HYDROSTATIC TRANSMISSION CONTROL

摘要

A hydrostatic transmission of the kind useful in an automotive vehicle is controlled automatically by adjustment of the output of a driven hydraulic generator (i.e., a pump) to maintain the torque absorbed by the generator substantially equal to the vehicle driving motor torque. Such adjustment is effected in accordance with fluid pressure established in accordance with the generator speed but modified in accordance with fluid pressure established between the generator and a receptor (i.e., a hydraulic motor) connected hydraulically thereto and connectable mechanically to one or more traction wheels of the vehicle.