KONSTANTEFFEKTREGULATOR FOR EN ENVEGSPUMP, VARS DEPLACEMENT ER VARIABELT GENOM HYDRAULISK PAVERKAN AV ETT RORLIGT OMSTELLNINGSORGAN

摘要

A displacement adjusting system for a variable displacement pump which delivers in a single direction only utilizes a pair of laminar flow restrictions connected in series in a bleed circuit and operated mechanically by the displacement regulator of the pump to increase one restriction as the other is decreased in proportion to changes in pump displacement. The pressure level at the point between the two restrictors is applied against a variable spring bias on a pilot valve to control a servomotor acting on the pump displacement regulator. The control maintains a maximum on pump input torque under all load variations and this limit is adjustable through the pilot valve spring.