Axial piston machine

Details Axial piston machine Axial piston machine

1991-02-07

1992-02-11

Bertsch, Richard A.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Cylinders parallel to rotation axis

417269, F01B 3104

Patent

active

050866893

ABSTRACT:
An axial piston machine which has an even number of piston cylinder chambers housing therein pistons in relation of being movable in reciprocation respectively so as to control a stroke of the piston by a swash plate, wherein first and second compensating pistons opposite to the swash plate are provided at the symmetrical positions with respect thereto in the vicinity of the upper dead and lower dead points inclusive, so that, when one piston cylinder chamber is positioned in the vicinity of the upper or lower dead point, control pressure at the pressurized side is introduced to the second compensating piston at the lower dead point side, or that at the pressure-reduction side to the first compensating piston at the upper dead point side, thereby reducing an exciting force caused by an abrupt pressure change in the piston cylinder chamber and a large variation in the inclined moment of the swash plate, so as to enable reduction in generation of vibrations and noises.

REFERENCES:
patent: 2445281 (1948-07-01), Rystrom
patent: 3154983 (1964-11-01), Firth
patent: 4201117 (1980-05-01), Gherner
patent: 4223594 (1980-09-01), Gherner

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