A pump includes a housing, a process stream input, a process stream output, a power stream inlet, and a rotor. The rotor comprises an impeller, a shroud, and a turbine. The impeller comprises fluid motive elements positioned about a central axis of the rotor and extending outward to the shroud. The turbine comprises runners formed on an outwardly facing surface of the shroud of the rotor. The shroud extends radially about the fluid motive elements of the impeller. The rotor is rotatably supported within the housing. The runners cause the rotor to rotate when the power stream flows through a fluid path impinging the runners thereby transferring energy from the flow of the power stream received through a power stream inlet into rotational energy of the fluid motive elements of the impeller to propel the process stream from a process stream input out a process stream output.

A pump includes a housing, a process stream input, a process stream output, a power stream inlet, and a rotor. The rotor comprises an impeller, a shroud, and a turbine. The impeller comprises fluid motive elements positioned about a central axis of the rotor and extending outward to the shroud. The turbine comprises runners formed on an outwardly facing surface of the shroud of the rotor. The shroud extends radially about the fluid motive elements of the impeller. The rotor is rotatably supported within the housing. The runners cause the rotor to rotate when the power stream flows through a fluid path impinging the runners thereby transferring energy from the flow of the power stream received through a power stream inlet into rotational energy of the fluid motive elements of the impeller to propel the process stream from a process stream input out a process stream output.

A hydrodynamic coupling arrangement has a housing connected to pressure medium lines for conducting pressure medium into or out of a pressure space sealed by a piston of a clutch device relative to a toroidal space of a hydrodynamic circuit provided in the housing. A rotatable area is provided for axially displaceably receiving a radially inner piston hub of the piston of the clutch device, and at least one through-opening which is rotatable relative to the housing is provided in a through-opening area for producing at least one flow connection between at least one pressure medium line and the pressure space. The receiving area and the through-opening area are in rotational communication with a retarding device influencing a flow of pressure medium in the pressure space, this flow of pressure medium arriving in the pressure space after passing through the through-opening area.

A hydrodynamic coupling arrangement has a housing connected to pressure medium lines for conducting pressure medium into or out of a pressure space sealed by a piston of a clutch device relative to a toroidal space of a hydrodynamic circuit provided in the housing. A rotatable area is provided for axially displaceably receiving a radially inner piston hub of the piston of the clutch device, and at least one through-opening which is rotatable relative to the housing is provided in a through-opening area for producing at least one flow connection between at least one pressure medium line and the pressure space. The receiving area and the through-opening area are in rotational communication with a retarding device influencing a flow of pressure medium in the pressure space, this flow of pressure medium arriving in the pressure space after passing through the through-opening area.

A transmission includes a torque converter stator with controllable blade angle. A controller adjust the blades by commanding fluid pressures in hydraulic circuits routed to the stator hub. The controller also adjust the torque capacity of a torque converter bypass clutch by commanding fluid pressures in hydraulic circuits routed to apply and release chambers. Various schemes are presented to multiplex hydraulic circuits to serve multiple functions.

A transmission includes a torque converter stator with controllable blade angle. A controller adjust the blades by commanding fluid pressures in hydraulic circuits routed to the stator hub. The controller also adjust the torque capacity of a torque converter bypass clutch by commanding fluid pressures in hydraulic circuits routed to apply and release chambers. Various schemes are presented to multiplex hydraulic circuits to serve multiple functions.

A torque converter has a torus. The torus has a size set based on a flatness ratio obtained by dividing a width of the torus in an axial direction by a width of the torus in a radial direction, a thinness ratio obtained by dividing the width of the torus in the axial direction by an outer diameter of the torus, and an inner diameter ratio obtained by dividing an inner diameter of the torus by the outer diameter of the torus.

A torque converter has a torus. The torus has a size set based on a flatness ratio obtained by dividing a width of the torus in an axial direction by a width of the torus in a radial direction, a thinness ratio obtained by dividing the width of the torus in the axial direction by an outer diameter of the torus, and an inner diameter ratio obtained by dividing an inner diameter of the torus by the outer diameter of the torus.

A device for transmitting torque includes a hydrodynamic torque converter having a turbine and a pump, as well as a friction clutch that is connected in parallel to the torque converter, having a first and a second frictional segment. The first frictional segment is integrated with the pump, and the second frictional segment is integrated with the turbine. A ring-shaped frictional segment, on which the frictional elements may be brought into engagement with each other axially, and a ring-shaped flow segment, on which vanes of the pump and of the turbine are located opposite each other axially, are matched with one another in their dimensions, in order to realize a balanced transmission behavior.

A device for transmitting torque includes a hydrodynamic torque converter having a turbine and a pump, as well as a friction clutch that is connected in parallel to the torque converter, having a first and a second frictional segment. The first frictional segment is integrated with the pump, and the second frictional segment is integrated with the turbine. A ring-shaped frictional segment, on which the frictional elements may be brought into engagement with each other axially, and a ring-shaped flow segment, on which vanes of the pump and of the turbine are located opposite each other axially, are matched with one another in their dimensions, in order to realize a balanced transmission behavior.