Measurement and evaluation of the quality of static characteristics of brake valves for agricultural trailers

Braking systems of vehicles are subject to very high demands in terms of the dynamic properties (speed and synchrony of action) and static properties. The quality of the static characteristic has a significant impact on the operation of the brake system follow-up operation. This paper describes the test apparatus and the methodology for measuring the static characteristics of the air brake valves for agricultural trailers. The paper presents formulated numerical indicators of the evaluation of quality of static characteristics and provides examples of the results of the static characteristics of the trailer brake valve with a predominance device. The developed methodology for measuring and assessing the quality of static characteristics of the trailer emergency valve can also be used to study other agricultural vehicles brake valves, and commercial vehicles.