Abstract
Pneumatic braking systems of agricultural trailers contain brake valves with adjustable predominance of the output pressure relative to the control pressure. The goals of our study were to improve the static and dynamic properties of agricultural trailer pneumatic braking systems by modification of brake valve construction with implementing a throttle valve to the predominance device in valve. Proposed correction device ensures that the intensity of the predominance effect depends on the rate of pressure rise in control chamber of the braking valve. Initial testing of three agricultural trailers' braking systems has confirmed the effect of modifying relay emergency valve to shortening the response time of their braking systems while maintaining a follow-up action under steady state conditions.
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