Voith Turbo Gmbh Co. Kg

Voith Patent Gmbh

Die Voith Turbo Gmbh & Co Kg

Martin Becke

Martin Nitsche

Dieter Laukemann

Werner Adams

Werner Klement

Achim Menne

Werner Koch

Tilman Huth

Markus Kley

Tillman K&ouml;rner

Rolf Brockmann

Tillmann K&ouml;rner

Dieter Nobis

Alexander Denk

Otto Weng

Werner Prof Klement

Oliver Hinrichs

The invention concerns a hydrodynamic retarder The invention is characterised in that the control device when closing the separating clutch detects the run-up behaviour of the secondary side of the separating clutch and/or of the rotor via at least one associated sensor or defines the run-up behaviour from at least one input value supplied thereto and according to the run-up behaviour initiates either the continuous closing of the separating clutch for slip bridging between the primary side and the secondary side for accelerating the rotor or the interruption of the closing process of the separating clutch.

Disconnectable hydrodynamic retarder and method for controlling same

A motor vehicle drive train including a hydrodynamic retarder () that comprises a revolving bladed impeller () and a stationary or counter-rotating bladed turbine () which jointly form a working chamber () that can be filled with a working medium to switch on the retarder () is disclosed. The hydrodynamic retarder () can be mechanically disengaged from the drive train by a disconnect clutch (). A fill level monitoring device () can detect the current fill level of the working medium in the working chamber (), while a disconnect clutch-blocking device () is effectively connected in a communicating or mechanical manner to the fill level monitoring device () and prevents the disconnect clutch () from engaging in accordance with the detected fill level.

Motor vehicle drive train comprising a hydrodynamic retarder that can be disengaged, and control method therefor

There is provided a method for controlling a hydrodynamic retarder. The method includes determining a presence of a retarder switch-off request, and keeping a separating clutch closed, after the determining, for a preset time span and emptying a working chamber of the hydrodynamic retarder of a working medium by continuous actuation of a rotating bladed rotor and interruption of infeed of the working medium into the working chamber. The method further included varying the preset time span according to at least one of the following parameters or at least one parameter correlated with one of the following parameters: a rotational speed of the rotating bladed rotor, an output pressure, against which the working medium is emptied from the working chamber, a filling level of the working chamber with the working medium, a temperature of the working medium, and a braking torque of the hydrodynamic retarder.

Method for controlling a hydrodynamic retarder which can be disengaged mechanically via a separating clutch

A vehicle transmission includes a transmission input and output along with a main shaft and a countershaft that create a plurality of transmission ratios for providing different gears when combined. The vehicle transmission also includes a range change transmission. The vehicle transmission also has, in the direction of the propulsion power flow from the transmission input to the transmission output, a performance interface downstream of the countershaft and upstream of the range change transmission for connecting an electric motor.

Vehicle transmissions

A method for matching an actual characteristic curve or diagram that characterizes the operating mode of a hydrodynamic component to a set characteristic curve or diagram is provided. The method includes a set characteristic curve or diagram of the hydrodynamic component is stored in a writable/readable memory storage unit a set manipulated variable being assigned to each operating point; the current actual characteristic curve is determined from the operating parameters that characterize the individual operating states and, for each operating point, is compared with the given set characteristic curve or diagram, a correction of the set manipulated variable being carried out for the respective operating point in the event of a deviation beyond a preset range of tolerances; and, in the event a deviation does not occur, the current set value is set as the new set value and read into the memory storage unit as a set manipulated variable.

Method for matching the actual characteristic curve of a hydrodynamic component to a predefined set characteristics curve during the final test of the hydrodynamic component

A starter unit comprising: an input and an output; a starter element, configured as a hydrodynamic component comprising a drive element that can be coupled to the input in a rotationally fixed manner and a driven element that can be coupled to the output. A free wheel mechanism is located between the driven element of the starter element and the output.

Starter unit

The invention relates to an operating material supply device for hydrodynamic components, for example, hydrodynamic switching elements for use in starting units, retarder assemblies or gearing assemblies. The material supply device includes an operating material reservoir arranged in the housing of the starting unit, retarder unit, or gearing assembly and comprises an operating material sump with at least one filling line that connects the operating material sump to the hydrodynamic component. The operating material sump may be closed in a pressure-tight manner.

Operating material supply device

A method for controlling and filling a hydrodynamic clutch. A set variable can be preset for a variable which at least indirectly characterizes the functional state of the hydrodynamic clutch and which serves as an input variable of a control device assigned to the lubricant or operating material supply system. The control device comprises a pressure balance for controlling an adjusting device for influencing the operating material supply of the hydrodynamic clutch. The set variable can be preset in order to enable the adjustment of at least three basic functional states of the hydrodynamic clutch.

Method and device for controlling a hydrodynamic clutch

The invention related to a hydrodynamic-mechanical multi-speed compound transmission has at least four speeds. The transmission includes a transmission input shaft and a transmission output shaft as well as a hydrodynamic transmission part. The hydrodynamic and the mechanical transmission parts are connected in series when seen from the power flow direction. Mechanisms are provided for by-passing the hydrodynamic transmission part during power transmission. The hydrodynamic transmission part includes at least one hydrodynamic speed-torque converter. The mechanical transmission part includes a mechanical speed-torque converting device with at least two planetary gear sets. The mechanical transmission part is designed in such a way that transmission ratios in the individual gear steps cause gear step jumps of phi &lE;1.45 between two successive gear steps of the individual speeds.

Hydrodynamic-mechanical multi-speed compound transmission, especially a six-speed torque-converter transmission

The invention relates to a hydrodynamic mechanical compound transmission comprising a transmission input shaft (E), a transmission output shaft (A), a hydrodynamic transmission part (,) and a mechanical transmission part (,). Said mechanical transmission part (,) comprises at least one speed/torque conversion device (,). The output of the mechanical speed/torque converter (,) is at least indirectly drive-connected to the transmission output shaft (,). According to the invention, the hydrodynamic retarder (,) which comprises a stator (,) and a rotor blade wheel (,) is spatially integrated in the transmission housing (,). In addition, the rotor blade wheel (,) of the hydrodynamic retarder (,) is at least indirectly coupled to the output shaft (A) of the mechanical speed/torque converter (,). The hydrodynamic retarder (,) functions as a secondary retarder, however, it is spatially arranged in the transmission before the downstream stage (,).

Growing community of inventors

Ulm, Germany

Martin Becke