Tractor-trailer brake control system.

摘要

A tractor-(28) trailer (30) vehicle (24) brake system control for distributing the brake effort to obtain inter-tractor-trailer proportional braking (H1/V1 = H2/V2) by means of sensors (170, 172) mounted to the trailer only is provided. The control system senses (80) acceleration (a) and the ratio of vertical to horizontal forces (HF/VF) at the fifth wheel (34) by means of sensors (170, 172) mounted to the tractor (28) only and modulates the brakes to cause the ratio HF/VF to equal acceleration.