The Application of Dowty Retarder

This paper analyzes the features of dowty retarder in the shunting system. dowty retarder works by openingand closing of internal speed valve plate, adjusting the volume of valve plate and replacing supportedsprings of valve plate to adjust critical speed of dowty retarder. According to above working mechanisms, this paper suggests that retarder is installed in the before and after loop-line loading point with large gradient or railway track scale to assist train braking and reduce civil engineering works. Based on example analysis, the conclusion is obtained that dowty retarder can be applied in station lines of larger gradient or lines where auxiliary braking is required.