Patent ID: 6675776
Filing Date: 2004-01-13
Classification: F02M,F04B

Abstract:
A variable delivery fixed displacement pump comprising:an actuator having an actuator bore, a first directional port, a second directional port and an actuator shaft disposed within said actuator bore, said actuator shaft being moveable in a first direction in response to fluid flow being received at said first directional port and a second direction, in response to receiving fluid flow at said second directional port; said actuator shaft being connected to a sleeve to vary a fluid flow from said pump in response to receiving fluid flow at one of said first and second directional port; and a valve having a spool, at least one solenoid coil, said spool being moveable to direct said fluid flow to one of said first directional port and said second directional port, in response to an electrical current from a controller being applied to said at least one solenoid coil.