Robert Boschgmbh

Stefan Merz

Martin Zug

Timo Nafz

David Breuer

Rene Scheerer

Manuel Sell

Ulrich Gordon Mohn

Felix Hoffmann

A hydrostatic axial piston machine is disclosed, in the housing of which a drive shaft is rotatably mounted about an axis of rotation. The housing comprises a pot-like housing part having a first abutment and a cover-like housing part having a second abutment. The two abutments are clamped against one another in a sealing manner. A first fitting pin is inserted precisely into a first fitting recess of the first abutment on the one hand and into a second fitting recess of the second abutment on the other hand. A second fitting pin is provided on a side opposite the axis of rotation, which is inserted precisely into a third fitting recess of the first abutment on the one hand and into a fourth fitting recess of the second abutment on the other hand. The second fitting recess has a radial widening relative to the axis of rotation, whereby the second fitting recess is a slotted hole and/or a fitting groove.

Centering the housing parts of an axial piston machine

A hydrostatic piston engine comprises a housing with a cylinder drum with cylinder bores mounted rotatably therein. Each of the cylinder bores receives a working piston in a longitudinally displaceable manner, via which a hydrostatic working chamber is delimited by the cylinder bore. The hydrostatic working chamber has an opening on an outer surface of the cylinder drum by which, when the cylinder drum rotates, outlets of a high-pressure chamber and of a low-pressure chamber of the piston engine and a reversing surface arranged between the two outlets in the rotational direction can be passed over in alternating fashion. At least one pressurizing medium channel is provided which, on one hand, opens out in the reversing surface and, on the other, into a pressurizing medium trough of the piston engine.

Hydrostatic piston engine

A pump unit includes a main pump () and a charge pump (), the pump capacity of which is adjustable via an adjusting element. To adjust the pump capacity of the charge pump (), an adjusting element of the charge pump () is acted upon by an adjusting force which is dependent on the inlet pressure of the main pump ().

Pump unit comprising a main pump and a charge pump with a variable pump capacity

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Hechingen, Germany

Stefan Merz