Abstract: A hydrodynamic retarder having a first blade wheel and having a second blade wheel concentric thereto, together forming a hydrodynamic circuit grouped about a common rotary axis. Each blade wheel is made of a base body and a blade arrangement fixed thereto including a plurality of blades. The hydrodynamic circuit is supplied by a fluid inlet, while the fluid removal from the hydrodynamic circuit is performed by a fluid outlet. The fluid inlet has an inlet spiral enabling tangential fluid flow and the fluid outlet has an outlet spiral enabling tangential fluid flow. At least one inlet spiral is associated with a flow guide guiding the fluid into the hydrodynamic circuit with at least one axial component.

Abstract: A hydrodynamic retarder having a first blade wheel and a second blade wheel concentric thereto, forming a hydrodynamic circuit grouped about a common rotary axis. Each blade wheel includes a base body and a blade arrangement fixed thereto including a plurality of blades each connected to receptacles in the base body. A first ring segment of at least one blade wheel includes at least one first blade having a flow edge facing the other blade wheel in each case, said edge having at least one extension running in a substantially straight line between the radial outer end thereof and the radial inner end thereof, and at least one second blade is provided in a second ring segment of the blade wheel, the blade having a retraction both opposite the flow edge facing the other blade wheel in each case, and opposite a protrusion protruding in the direction of the other blade wheel.

Abstract: A hydrodynamic retarder with tangential inflow and outflow is formed with at least one radial recess (3), in the stator, which extends radially outward when viewed in the radial direction. The at least one radial recess (3) is arranged so as to enable one of back-feed and back-filling of the oil, emerging through the tangential outlet, into the pressure space.

Abstract: A hydrodynamic retarder with a tangential inflow and outflow principle which is achieved by the rotor (1) and the stator (2) having a predetermined eccentricity relative to one another. A variable outlet gap (6) is formed about a circumference of the hydrodynamic retarder between the rotor (1) and the stator (2).

Abstract: A hydrodynamic retarder having a first blade wheel and having a second blade wheel concentric thereto, together forming a hydrodynamic circuit grouped about a common rotary axis. Each blade wheel is made of a base body and a blade arrangement fixed thereto including a plurality of blades. The hydrodynamic circuit is supplied by a fluid inlet, while the fluid removal from the hydrodynamic circuit is performed by a fluid outlet. The fluid inlet has an inlet spiral enabling tangential fluid flow and the fluid outlet has an outlet spiral enabling tangential fluid flow. At least one inlet spiral is associated with a flow guide guiding the fluid into the hydrodynamic circuit with at least one axial component.

Abstract: A hydrodynamic retarder having a first blade wheel and second blade wheel concentric thereto, forming a hydrodynamic circuit grouped about a common rotary axis. Each blade wheel includes a base body and a blade arrangement fixed thereto including a plurality of blades each connected to receptacles in the base body. A first ring segment of at least one blade wheel includes at least one first blade having a flow edge facing the other blade wheel in each case, said edge having at least one extension running in a substantially straight line between the radial outer end thereof and the radial inner end thereof, and at least one second blade is provided in a second ring segment of the blade wheel, the blade having a retraction both opposite the flow edge facing the other blade wheel in each case, and opposite a protrusion protruding in the direction of the other blade wheel.