Valve-controlled hydro motor e.g. axial or radial piston engine, for use in swash plate structure, has working chambers connectable with inlet via releasable feed valve, where feed valve is hydraulically operated

摘要

#CMT# #/CMT# The motor (1) has pistons (6) limiting working chambers (8) in sections, where each working chamber is connectable with an inlet (18) via a releasable feed valve (16) and with an outlet (24) via an electrically operable drain valve (22). The feed valve is hydraulically operated, and the feed valve and the drain valve are check valves. The feed valve is prestressed towards closing position and is adjustable by an adjusting cylinder (60) in an opening direction. The adjusting cylinder has a piston that stays in an effective connection with a closing body of the feed valve. #CMT#USE : #/CMT# Valve-controlled hydro motor e.g. axial or radial piston engine, for use in a swash plate structure. #CMT#ADVANTAGE : #/CMT# The releasable feed valve is hydraulically operated so that the adjusting force is necessary to open the feed valve during starting of the motor, can be applied with small expenditure while avoiding large actuating magnets, thus realizing the motor in an economical manner. The motor is designed such that the motor achieves improved start-up behavior, and is simple in structure. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view illustrating operational principle of a valve-controlled hydro machine with changeable draft/displacement volume. 1 : Valve-controlled hydro motor 6 : Pistons 8 : Working chambers 16 : Releasable feed valve 18 : Inlet 22 : Electrically operable drain valve 24 : Outlet 60 : Adjusting cylinder.