HYDRAULIC PUMP NOZZLE AND METHOD OF USE

摘要

A hydraulic flow return system (20) of a transmission pump (22) incorporating a bypass valve (78) which senses the back pressure in the incoming bypass flow (50) and operates to open an auxiliary bypass channel (80) in the event that the back pressure exceeds a predetermined control value in order to divert a fraction of the bypass flow (50) around the flow restrictor (48) for delivery to the pump (22) until such time as the back pressure falls below the control value.