Abstract:
A hydrostatic transmission system includes a hydraulic motor and at least one proportional control valve and at least one pump connected to the hydraulic motor to provide fluid to operate the hydraulic motor. The at least one pump includes at least one fluid driver having a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from the pump inlet to the pump outlet. The hydrostatic transmission system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover and concurrently establishes an opening of the at least one proportional control valve to adjust at least one of a flow and a pressure in the hydrostatic transmission system to an operational set point.
Abstract:
An external gear machine (EGM) includes a housing, an inlet, a drive gear positioned in the housing and configured to be (i) driven by a mechanism when the EGM is operated as a pump, or (ii) drive an external mechanism when the EGM is operated as a motor, the drive gear having a plurality of teeth, a slave gear positioned in the housing having a plurality of teeth and configured to be driven by the drive gear, an outlet formed in the housing and configured to receive at least some of the volume of fluid via an outlet fluid communication channel, a first slider defining an inlet fluid communication channel and the outlet fluid communication channel, selective positioning of the first slider configured to vary net operational volumes of fluid communication between the inlet and the outlet, for a given rotational speed of the drive gear.
Abstract:
Die vorliegende Erfindung betrifft eine Strömungsmaschine (1), welche sowohl als Motor als auch als Pumpe betrieben werden kann, mit axial fest gelagerter Welle, umfassend ein Leistungsteil mit rotierendem Zu- und Ablauf (2) sowie eine zugehörige Steuerung (3). Die Strömungsmaschine (1) besitzt aufgrund der drehrichtungsunabhängig gemachten Axialkräfte (Fgx) einen wesentlich verbesserte Zuverlässigkeit und aufgrund der Anpassung der Dichtkräfte einen wesentlich besseren Wirkungsgrad (η) in beiden Laufrichtungen. Sie kann sowohl mit Fluiden als auch mit Gasen betrieben werden. Die Strömungsmaschine (1) kann mit einer Steuervorrichtung (13) und einem Antrieb (14) für die Steuervorrichtung erweitert werden, um eine Freilauffunktion, eine Bremsfunktion und/oder eine Blockierfunktion zu erhalten, sowie um die Kennlinien (K0, K1, K2, K3) im gesamten Regelbereich zu verschieben, zu verändern und zu optimieren. Die Strömungsmaschine (1) besitzt im Rechts- und Linkslauf prinzipiell die gleichen Eigenschaften, welche aber über die Steuervorrichtung (13) verändert und optimiert werden können. Als Leistungsteil (2) eignen sich GEROTOR Maschinen, axiale und radiale Kolbenmaschinen sowohl in geregelter als auch in ungeregelter Ausführung.
Abstract:
The invention relates to a hydraulic transformer comprising a plurality of displacement spaces (12) and a control disk (20) which can rotate about an axis of rotation to adjust a pumping action/motor action of the hydraulic transformer (1) and which has control cavities (21-23), with each of which multiple displacement spaces (12) are associated. The invention is characterized in that during operation of the hydraulic transformer (1), the size of the displacement spaces (12) changes in the radial, tangential, and/or circumferential direction relative to the axis of rotation of the control disk (20) in order for the hydraulic transformer (1) to perform the pumping action/motor action.
Abstract:
A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.
Abstract:
A fluid device (10) includes a displacement assembly (16) and a balance plate assembly (14) disposed adjacent to the displacement assembly (16). The displacement assembly (16) includes a ring (28) and a rotor (26) disposed in a bore (34) of the ring (28). The ring (28) and rotor (26) cooperatively define a plurality of volume chambers (50). The balance plate assembly (14) includes a housing (84) that defines a cavity (86). A balance plate (86) is disposed in the cavity (86). The balance plate (86) includes a first end surface (130) and an oppositely disposed second end surface (132). The balance plate (86) is adapted to move axially between a first position (200) in which the second end surface (132) of balance plate (86) abuts a first end face (31) of the ring (28) to a second position (204) in which the second surface (132) of the balance plate (86) is recessed in the cavity (86).
Abstract:
The invention relates to a power production unit including at least one first convergent pipe (11) and an engine (2), the first pipe (11) including an inlet (110) operationally supplied with a fluid moving in an accelerated manner within the first pipe to an outlet (111) of said first pipe (11), and the engine (2) being set up on the outlet (111) of the first pipe (11) and being designed so as to recover at least a fraction of the kinetic energy of the fluid flow passing through the outlet (111) of the first pipe (11). According to the invention, the engine (2) is a positive displacement engine wherein the entire fluid flow, passing through the outlet (111) of the first pipe (11), passes through the positive displacement engine.
Abstract:
A rotary fluid pressure device (11) includes a plate assembly (17) having a plate member (71) and at least one cover plate (105), which defines a mounting surface (107) adapted for sealing engagement with an exterior surface (77) of the plate member (71), or at least one control valve assembly (105), which defines a mounting surface (117) adapted for sealing engagement with the exterior surface (77). The cover plate assembly (105), when mounted to the exterior surface (77), provides fluid communication between openings (95, 97) of upstream and downstream fluid passages (91, 93), thereby providing single- speed functionality. The control valve assembly (115), when mounted to the exterior surface (77), provides selective fluid communication between the openings (95, 97) of upstream and downstream fluid passages (91, 93), thereby providing multi-speed functionality.