Audi Ag

Karlsruher Institut Fur Technologie

Tes Wankel Technische Forschungs-und Entwicklungsstelle Lindau Gmbh

Tes Wankel Technische Forschungsund Entwicklungsstelle

Bayerische Motoren Werke Aktiengesellschaft

Mercedes-benz Aktiengesellschaft

Michael Frey

Frank Obrist

Peter Kuhn

Tilo Koch

Bastian Scheurich

Frank Gauterin

Philipp Hertzler

Eva-Maria Judith Knoch

A gyroscope-based rotation damper for a motor vehicle, includes a flywheel that is driven via a drive, rotates around an axis of rotation at an angular velocity (&#x3c9;), the flywheel being mounted in a gimbal on the motor vehicle structure by way of a first bearing element and a second bearing element. The flywheel is mounted rotatably around the angle of rotation (&#x3c6;) at the first bearing element, and the first bearing element is rotatably mounted at the second bearing element around a first angle of rotation (&#x3b8;) around a first axis aligned orthogonal to the axis of rotation of the flywheel, and the second bearing element is mounted rotatably around a second angle of rotation (&#x3c8;) around a second axis aligned orthogonal to the first axis, as well as a controller unit for controlling a shaft drive.

Gyroscope-based rotation damper for a motor vehicle

A rotation damper for a motor vehicle. A flywheel driven via a drive with angular velocity and rotating about an axis of rotation is cardanically mounted via a first bearing element and a second bearing element. The flywheel is rotatably mounted on the first bearing element at the rotational angle and the first bearing element is rotatably mounted on the second bearing element at a first rotational angle of a first axis of the flywheel oriented orthogonally to the axis of rotation, and the second bearing element is rotatably mounted at a second rotational angle of a second axis oriented orthogonally to the first axis. The first bearing element is operationally connected to a shaft drive and the second bearing element can be connected by a means to a wheel carrier of the motor vehicle.

Rotation damper for a motor vehicle

A method for controlling a rotation damper operating according to the gyroscopic principle for a motor vehicle, wherein the rotation damper includes a flywheel, which is driven by a drive and rotating about a rotation axis with an angular velocity &#x3c9;, which is cardanically mounted via a first bearing element and via a second bearing element, wherein the flywheel is rotatably mounted on a first bearing element and at a rotation angle &#x3c6;, and the first bearing element is rotatably mounted on a second bearing means about a first axis that is oriented orthogonally to the rotation axis of the flywheel, and the second bearing element is rotatably mounted at a second rotational angle (&#x3c8;).

Method for controlling a rotation damper functioning according to the gyroscopic principle

The reciprocating engine more particularly intended for high pressure applications or motor vehicle CO.sub.2 air conditioning systems, has a wobble plate transmission, whose wobble plate (3) can assume different inclined positions for power control purposes. For this purpose is provided a wobble joint constructed as a knuckle joint, allowing the tilting movement of the wobble plate (3) supported on the engine shaft (4) through a slot guide (11, 11') of a driving pin (9). A good controllability of the reciprocating engine results from friction-reducing engine components provided on the driving pin (9) and comprising bearings (32, 33), which allow a rotation of the driving pin (9) about its longitudinal axis, as well as a sliding bush or a roller bearing (47) on one of the pin ends (40, 43) engaging in slot guides (11, 11'). In addition, in the vicinity of the more strongly loaded pin end is provided an axial force-absorbing sliding disk (42).

Reciprocating engine with a wobble plate transmission

The internally axed single-rotation machine has inlet and outlet channels , 6), which extend arcuately round the circular cylindrical housing space (11) enclosing the rotors (1, 2) to such an extent that the tangentially connecting inlet and outlet connections (12, 13) cross and the outlet channel (6) extends over part of the inlet channel (5). In the vicinity of this approach between the outlet and inlet channels (6, 5) there is a flow connection (19), which continues the arcuate shape of the outlet channel (6) to that of the inlet channel (5). The gas pressure in the outlet channel (6) is variable by a control element (20) located in said flow connection (19). The single-rotation machine pressure control is associated with minimum noise generation and minimum flow losses and a particularly compact construction is obtained.

Method of reducing noise from the flow of gaseous media in a single

In a vehicle air conditioning system CO.sub.2 as the refrigerant is compred by an internally controlled swash plate compressor (1) and circulates in a main circuit (2) having at least two heat exchangers (3, 5). An expansion valve (4) subdivides the main circuit (2) into a high and a low pressure part. The capacity control of the swash plate compressor (1) and therefore the air conditioning system takes place by means of a valve (23), which is located in a partial circuit (22) branched from the main circuit (2) by means of a constant choke (21) and which includes the drive chamber (18) of the swash plate compressor (1), so that in the latter it is possible to modify the pressure for adjusting the stroke length of the compressor piston (7). The branching point for the partial circuit (22) is located on an oil separator (20), which is located in the flow direction behind a first heat exchanger (5), so that the swash plate compressor (1) is cooled and is supplied with returned, cooled oil.

Vehicle air conditioning system

The seal or pattern between two machine parts has on one of the sealing gap-forming, facing surfaces (5) a plastic layer (1) with closely juxtaposed depressions (8) which have the form of partly cut off voids of an expanded plastic structure. They are formed by the removal of a plastic layer (3) expanded on the machine part, the layer thickness being so uniformly reduced that the voids (4) of the bottom void layer (4) adjacent to the base surface (5) of the machine part are open. This avoids the insulating action of the closed voids of an expanded plastic layer and the latter has a very limited weight, which avoids any risk of the layer being detached or separated due to centrifugal forces. Moreover, in simple manner, a honeycomb-like, open surface structure is obtained, so that there is a labyrinth effect in the sealing gap. In order to obtain minimum, sealing gaps by running in the open, honeycomb-like surface structure is particularly advantageous, because the solely linear contact which occurs ensures a rapid running in of the mating surface, which can be abrasively prepared. The seal or packing is particularly suitable for very rapidly rotating machine parts.

Growing community of inventors

Lindau, Germany

Michael Frey