Axial piston machine with control valve

An axial piston machine comprising a pivotably supported swash plate (6), a rotatably supported drive shaft (1), a driving mechanism (2) rotationally fixedly connected to the drive shaft (1), one or more driving mechanism pistons (3) received in the driving mechanism (2), which are axially displaceably supported, and whose piston stroke is settable by the swash plate (6), a mechanical adjustment device (20) for changing the pivot angle of the swash plate (6), and an externally controllable control valve (30), wherein

• the control valve (30) has a valve housing (32) having a control piston (31) displaceably supported in a bore (31a),
• the adjustment device (20) is hydraulically actuable by the control valve (30),
• an adjustment chamber (34) of the control valve (30) for a hydraulic pressure action on the adjustment device (20) is connectable, in dependence on a switched state of the control valve (30), to a high pressure inlet (A) or to a low pressure inlet (T) of the control valve (30) via a setting pressure connection extending radially through the control piston (31), and
• during operation with an active external control of the control valve (30), a fluid connection between the high pressure inlet (A) and the setting pressure connection is established via a first control edge (41) or a fluid connection between the low pressure inlet (T) and the setting pressure connection is established via a second control edge (46), wherein
• a third control edge and a fourth control edge (47, 48) are provided that are configured such that in an emergency operation without an active external control of the control valve, a fluid connection is established via the fourth control edge (48) between the low pressure inlet (T) and the setting pressure connection after a fluid connection between the high pressure inlet (A) and the setting pressure connection has been is blocked via the third control edge (47),
• the third control edge (47) blocking the fluid connection between the high pressure inlet (A) and the setting pressure during on a transition of the control piston (31) into an end abutment position during the emergency operation.