Voith Turbo Gmbh Co. Kg

Voith Patent Gmbh

Werner Klement

Klaus Vogelsang

Dieter Laukemann

Werner Adams

Achim Menne

Martin Becke

Reinhard Kernchen

Werner Koch

Tilman Huth

Heinz Holler

Heinz Höller

Peter Edelmann

Rolf Brockmann

Jürgen Friedrich

Dieter Nobis

Volker Zimmermann

Peter Edelman

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 gearbox module having a gearbox input and at least one gearbox output; having a starting element coupled to the gearbox input, having an input and an output that can be coupled at least indirectly to the gearbox output; having a gear-shifting device, having at least two inputs and one output, which can be connected to the gearbox output; a first input of the gear-shifting device is connected to the output of the starting element and a second input is connected to the input of the starting element; each input of the gear-shifting device is selectively connected by means of a synchronously shiftable coupling, thereby producing a first power branch and a second power branch.

Gearbox module

A drive system for a motor vehicle is provided. The drive system has a drive assembly, at least one power transmission unit that is coupled with the drive assembly and an electrical machine coupled at least indirectly with the drive assembly. The power transmission unit has at least one starting element with a hydrodynamic clutch and a bridging clutch. A rotor or armature of the electrical machine is arranged coaxially to the hydrodynamic clutch and can be coupled with it in a torsionally rigid manner.

Hybrid drive system comprising a hydrodynamic clutch particularly for motor vehicles

The invention involves a process for controlling the rotational speed of a drive motor during a start-up period, in a drive train, containing at least one starter element that can be coupled to the drive motor, in a rotationally fixed manner, in the form of a hydrodynamic coupling, containing a primary blade wheel and a secondary blade wheel, which form together at least one toroid-shaped working space. According to the invention, the rotational speed of the drive motor is set as a function of the power that can be consumed by the hydrodynamic coupling. The consumable power can be controlled or regulated.

Method for regulating the speed of a drive motor

A hydrodynamic component () comprising: two rotating blade wheels: a primary blade wheel () and a secondary blade wheel (), which together form at least one torus-shaped working chamber (5Z); at least inlet () for service fluid leading into the torus-shaped working chamber, the inlet being located in the vicinity of the lowest static pressure; at least one outlet () leading out of the torus-shaped working chamber; a working fluid circulation () which is set up in the torus-shaped working chamber during operation; a closed circuit () allocated to the working chamber and an external section () of the closed circuit, said section being located between the outlet and the inlet.

Hydrodynamic component

A hydrodynamic component with at least two rotating impellers which form a working chamber for a working circuit. A closed circuit coupled to the inlet to the working chamber and to the outlet from the working chamber. The closed circuit is pressure tight. Pressure control for the closed circuit.

A method for controlling the power consumption of a starting element () in the form of a hydrodynamic clutch (). The clutch comprises an impeller () and a turbine wheel (), which together form at least one toroidal working chamber () that can be filled with an operating medium, and is located in a drive train () with at least one other drive motor that can be coupled to the hydrodynamic clutch. The method is characterized in that the power consumption can be freely adjusted as a function of the volumetric efficiency of the hydrodynamic clutch and the method has the following characteristics: the supply or evacuation of the operating medium to or from the working chamber is influenced by the generation and introduction of a static superposition pressure in the closed rotating circuit; the operating medium is supplied or evacuated to or from the working chamber by the application of a superposition or influencing pressure to the operating medium level in the operating medium reservoir ().

Method for controlling the power consumption of a hydrodynamic clutch by controlling the volumetric efficiency and a hydrodynamic clutch

The invention relates to a starter unit () comprising an input (E) which may be coupled to a drive input, an output (A) which may he coupled to a drive output, a starter element () in the form of a hydrodynamic coupling (), a switchable clutch (), comprising at least two clutch elements, which may be brought into frictional engagement, either directly or indirectly, by means of further transfer agents, being a first clutch element () and a second clutch element () each rotationally fixed to the input (E) and the output (A) respectively. The hydrodynamic coupling () and the switchable clutch () are arranged in a parallel fashion in two power branches () and may be activated individually or in common.

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Heidenheim, Germany

Werner Klement