Patent ID: 9162659
Filing Date: 2015-10-20
Classification: B60T

Abstract:
1. A method of controlling the braking of a tractor-trailer combination in which the tractor includes a drive train having an engine and at least one ground-engaging member driveably connected thereto via an adjustable-ratio transmission; at least one ground-engaging member of the tractor includes at least one tractor brake; and at least one ground-engaging member of the trailer includes at least one further, trailer brake, the method comprising: determining a reference deceleration value A measuring a value A comparing in a closed-loop control arrangement the reference and measured deceleration values and establishing therefrom a target value of braking effort of the trailer brake that approximates the braking of the tractor-trailer combination to the braking of the tractor when considered alone, wherein the reference deceleration value is calculated in accordance with the expression wherein A wherein the target value of braking effort of the trailer brake is F in which additionally A X MEASURED is a measured value of deceleration of the tractor-trailer combination, F ENGINE BRAKE is the braking effort resulting from engine braking and M TRAILER is the mass of the trailer forming part of the combination.