192 clutches and power-stop control – Vortex-flow drive and clutch – Including drive-lockup clutch
Patent
1999-07-01
2000-11-07
Lorence, Richard M.
192 clutches and power-stop control
Vortex-flow drive and clutch
Including drive-lockup clutch
192 33, 192212, 464 66, F16H 4502
Patent
active
06142272&
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a hydrodynamic torque converter with a pump wheel received in a housing, a turbine wheel and, if necessary, a stator wheel, with a converter bypass clutch having an axially displaceable piston, and a torsional vibration damper having an input part and an output part which are turnable relative to each other at least against the restoring force of energy storing elements which are disposed between them, as well as with a hub.
Such hydrodynamic torque converters became known, for example, from DE-OS 195 14 411. In such prior art torque converters, the turbine wheel comprises its own hub which is connected, with play, to an output hub by way of a motion transmitting gearing. The output part of the damper is connected with the output hub by means of rivets. This entails pronounced expenditures for assembly and necessitates the utilization of an increased number of different parts.
It is an object of the invention to provide a hydrodynamic torque converter of the above outlined character which can be produced in a simple manner and can be assembled by resorting to fewer parts and installed at a reduced cost, but the satisfactory operability of the torque converter should be preserved. Furthermore, it is an object of the invention to provide a hydrodynamic torque converter which is constructed in a space-saving manner, of particular interest being especially the axial space requirements in view of the continuously decreasing availability of space for installation in the axial direction of the motor vehicle transmissions.
In accordance with the invention, this is accomplished in that the turbine wheel and the piston are non-rotatably connected with the input part of the damper and the input part of the damper is secured to the hub by a connection which exhibits an angular play, the output part of the damper being secured to the hub by a connection which is devoid of angular play.
Owing to the novel undertaking, one can ensure that the utilized component parts of the torque converter, inclusive of the damper and the converter bypass clutch, are of a relatively simple design as well as that the overall number of parts is small.
Various advantageous embodiments and further modifications of the invention, as well as further developments of the inventive concept, are set forth in the additional claims.
It is particularly expedient if the hub is provided with external teeth and the input part of the damper is provided with internal teeth mating with the external teeth of the hub with angular play to thus establish a connection with angular play, and if the output part of the damper is provided with internal teeth mating with the external teeth of the hub without angular play to thus establish a connection which is devoid of angular play.
The object of the invention is further accomplished in that, in a hydrodynamic torque converter with a pump wheel received in a housing, a turbine wheel and, if necessary, a stator wheel, with a converter bypass clutch having an axially displaceable piston, and a torsional vibration damper having an input part and an output part which are turnable relative to each other at least against the restoring force of energy storing elements which are disposed between them, as well as with a hub, the piston is non-rotatably connected with the input part of the damper and the input part is secured to the hub by a connection which exhibits an angular play, the turbine wheel being non-rotatably connected with the output part of the damper and the output part of the damper being secured to the hub by a connection which is devoid of angular play.
It is particularly advantageous in such a torque converter if the hub is provided with external teeth and the input part of the damper is provided with internal teeth which mate, with angular play, with the external teeth of the hub to thus establish a connection with angular play, as well as if the output part of the damper is provided with internal teeth which mate, without angular play, with the external teeth of the hub to thus
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Boman Wendy
Heck Thomas
Maienschein Stephan
Meisner Marc
Uhlmann Frank
Lorence Richard M.
LuK Getriebe-Systeme GmbH
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