Daimler-benz Ag

Daimler Chrysler Ag

Daimler Ag

Franz Moser

Ernst Tscheplak

Gunter Worner

Roland Flinspach

Guenter Woerner

Andreas Haller

Franz Brugger

Thomas Ruhl

G&uuml;nter Rink

Christian Lauble

Hermann Hausegger

Gunther Schlimpert

Gunter Werner

Ernest Tscheplak

In a hybrid drive train with torsional vibration dampers of a hybrid motor vehicle, including an internal combustion engine, an electric machine, a clutch and a transmission, a first spring damping system is arranged between the internal combustion engine and the electric machine and a second spring damping system is arranged between the electric machine and the transmission, each damping system being provided with an arrangement of springs and a centrifugal pendulum for reducing humming noises in a hybrid drive train in the low speed driving range of the hybrid motor vehicle.

Hybrid drive train with torsional vibration damper

A vibration damper for a tubular propeller shaft in the drive train of a motor vehicle having a mass body mounted concentrically, in the propeller shaft or in a sleeve attached in the propeller shaft, by way of at least one rubber spring element. Metal and/or flexible rubber stop elements that limit the vibration travel of the mass body at least in the radial direction are arranged between the mass body and the sleeve. Alternatively, the mass body and/or the sleeve are configured at least locally, in mutually opposite regions, as stop elements that limit the vibration travel of the mass body at least in the radial direction.

Vibration damper for a tubular drive shaft

Method for avoiding bucking oscillations during acceleration of vehicles

Methods for avoiding bucking oscillations during acceleration of vehicles

An apparatus for reducing the transmission of vibrations from an engine to a transmission line having two flywheel elements capable of rotation relative to one another, the first element being drivingly connected to the engine and the second element being drivingly connected to the transmission line. The two flywheel elements are connected by a spring mounting and abutments. A first abutment of the spring mounting is frictionally connected with limited rotational capacity to the second flywheel element. The frictional contact between the first abutment and the second flywheel element is smaller than the frictional contact between the second abutment and the first flywheel element.

Apparatus for reducing vehicle drive train vibrations

Divided flywheel arrangements having a spring arrangement, and preferably also a slip clutch arrangement, accommodated in a lubricant bath, which is formed by an annular space limited radially outwards only by parts which are stationary relative to one another. Centrifugal forces acting on the lubricant cannot therefore force the lubricant against seals between mutually movable parts. Certain disclosed arrangements do not accommodate these parts in a lubricant bath.

Multi-stage slip clutch for a divided flywheel damper

Divided flywheel arrangements are disclosed with a spring arrangement, and preferably also a slip clutch arrangement, accommodated in a lubricant bath, which is formed by an annular space limited radially outwards only by parts which are stationary relative to one another. Centrifugal forces acting on the lubricant cannot therefore force the lubricant against seals between mutually movable parts. Certain disclosed arrangements do not accommodate these parts in a lubricant bath.

Divided flywheel

The flywheel elements are connected to one another in drive terms via a spring mounting, an abutment of which is movable relative to the associated flywheel element against the resistance of a second spring mounting and a non-positive coupling arranged parallel to the second spring mounting. Furthermore, a second non-positive coupling, subject to play, is connected between the flywheel elements and is limited resiliently in at least one direction.

Device for reducing engine-excited vibrations of a drive train,

A clutch operating cylinder for a pressure-medium operated clutch which is arranged in the power train of a vehicle, is operable either by the clutch pedal or via a electronically controlled system, for example an anti-slip regulating system, has a housing divided into two chambers. In these chambers there are, apart from the release piston, two further pistons and a spring having a clutch characteristic, such that the electronic control is never able to clutch further than is specified by the clutch pedal, the clutch pedal bites when it is operated subsequent to electronically controlled engagement, and it is possible to use both the clutch pedal and the electronic control to declutch further when the clutch has only been partially declutched.

Clutch operating cylinder for a pressure-medium operated clutch

A split flywheel for reducing the transmission of vibrations from the engine to the drive shaft at certain frequencies of the flywheel is provided. Included are two flywheel elements drivingly connected to one another wherein one of which is connected or can be connected in a driven manner to the engine and the other of which is connected or can be connected in a driven manner to the drive line. The resonant frequency of the split flywheel unit is well below the frequency of engine vibrations which occur during normal traveling, so that only slight amplitudes of vibration occur between the flywheel elements during normal travel operation. However, during start-up of the engine, the resonant frequency of the flywheel is passed through. The drive connection between the elements a slip clutch having a greater friction contact than the maximum torque of the engine, placed in series with a spring mounting and positioned between the two flywheel elements. The slip clutch becomes operative only when the resonant frequency of the flywheel is passed through.

Flywheels with vibration damping means

An apparatus for reducing the transmission of vibrations from an engine to a transmission line having a divided flywheel with first and second flywheel elements is provided by the in which the two flywheels are connected to the engine and transmission line, and are respectively connected by a spring mounting and at least two frictional clutches positioned between the two flywheels. The second frictional clutch has frictional contact smaller than the maximum torque of the engine and relative movements between the flywheel elements are effectively damped when the forces acting between the flywheel elements in these relative movements are weaker than the maximum engine torque, but stronger than a predetermined threshold value.

A divided flywheel for reducing vibrations transmitted from an engine to a power transmission line has an input and output part connected, respectively, to the engine and the transmission line. The input and output parts are coupled by coupling spring arrangement which allows for a degree of relative rotation of the parts. A plurality of attenuators (e.g., stop springs, friction linings, etc.) are arranged to take effect following selected predetermined angular displacements of the input and output parts. A preferred arrangement includes a connecting part, which is frictionally attached to one of the input and output parts and which engages the other of the parts following relative rotation by a first predetermined angular displacement, and a stop spring arrangement which is engaged following relative displacement of the parts by a second predetermined angular displacement.

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Wendlingen, Germany

Franz Moser