AXIAL-PISTON PUMP FOR CONTROLLED SUPPLY Russian patent published in 1995 - IPC

FIELD: pump engineering. SUBSTANCE: pistons 1 of a cylinder bank bear on inclined washer 3. The cylinder bank is coupled with driving shaft 2. A mechanism for control of supplying includes servo-piston 5 and two spring-loaded slide valve 15,19 of low and high pressure having spaces 7,8 for hydraulic control. The outlets of slide valves 9,15 are coupled with servo-pistons 5. Spaces 7,8 for hydraulic control are interconnected through line 22 and the delivery line and their outlets are connected with servo-pistons 5 through double-position solenoid slide waive 9. Slide valves 15,19 are axially alined. EFFECT: enhanced reliability. 2 cl, 1 dwg