Hydraulic working machine has mechanical device for driving piston, which performs piston stroke with lift curve that is chosen such that angular position which is sum of all positive angular position rise function values is constant

摘要

The machine has a piston (1) which receives and delivers phase-added pressure during one revolution of drive cycles, to the pressure outlet (P) of pressure medium volume with a device for phase-dependent control of the supply port (T), and using the mechanical device for driving the piston, to perform piston stroke according to phase-offset for all pistons in accordance with drive rotation angle dependent traversed lift curve. The lift curve is chosen such that at any angular position which is the sum of all positive angular position rise function values of piston stroke is constant.