Method of, and apparatus for, retarding the motion of a power driven vehicle

摘要

A method of, and apparatus for, retarding a vehicle equipped with an epicyclic gearbox in which a reverse gear train is included. In normal operation to engage reverse gear the reverse gear train contains a reaction member which is clamped to reverse the direction of rotation of the gearbox output shaft. To provide for retardation the reverse gear reaction member is not clamped but the clamping means is operated to allow slipping or intermittent operation of the reverse gear train so providing a retarded but not reversed operation of the output shaft.