Servo booster apparatus for engine governor.

摘要

The pedal effort required to change the setting of a governor (13) of an engine increases sharply with increased engine speed. Booster controls have been provided in the art for applying a boost force (FB), additive to an operator input force (FL), for opposing the force (FS) of a governor spring (42), thus to reduce pedal effort at high engine speeds. The improved booster control (15) herein includes an actuating chamber (53), and a control arrangement (51) for controlling fluid pressure in the chamber (53) when the setting of the governor (13) is changed by the operator and in a predetermined ratio to the operator's input force. The booster control (15) has wider application wherein a boosting force (FB) is desired to supplement an input force (FL) for controlling a movement of a member (23) having a opposing force (FS) applied thereto.