Apparatus for absorbing torque fluctuations produced by an internal combustion engine
Clutch assembly for use with an internal combustion engine
Rotational torque transmission mechanism
Friction clutch and air-flow promoting diaphragm spring therefor Patent #: 4629047
ApplicationNo. 07/000470 filed on 01/05/1987
US Classes:192/70.17, Resilient torque connection (e.g., for damping vibration)192/110B, Bearings192/113.4, Thermal insulating192/213.22, Biasing means192/70.12, With means to cool or lubricate clutch parts464/17, HAVING HEATING OR COOLING MEANS464/68.41, With biasing means464/68.5Including bearing detail
ExaminersPrimary: Bonck, Rodney H.
Assistant: Testardi, David A.
Attorney, Agent or Firm
International ClassesF16C 35/073 (20060101)
F16F 15/131 (20060101)
F16C 35/077 (20060101)
F16F 15/134 (20060101)
F16F 15/139 (20060101)
F16C 35/04 (20060101)
Foreign Application Priority Data1984-06-12 DE
AbstractA torsion damping apparatus between the crankshaft of the engine and the input shaft of the change-speed transmission of a motor vehicle has two flywheels one of which is driven by the crankshaft and the other of which drives the input shaft by way of a friction clutch which generates heat. In order to prevent the transfer of heat from the friction clutch to the antifriction bearing between the flywheels, which are rotatable relative to each other against the opposition of a damper, the bearing is at least partially surrounded by a thermal barrier of synthetic plastic, ceramic or metallic material which prolongs the useful life of the bearing and enhances the torsion damping action of the damper. The thermal barrier can constitute or form part of the damper. The bearing can be disposed radially inwardly of the location of engagement between the clutch and the other flywheel and can be cooled by streams of air flowing through an annulus of passages each having a first end disposed radially inwardly of the friction surface of the other flywheel and a larger second end in a second surface of the other flywheel opposite the friction surface. Heat barriers in the other flywheel can alternate with the passages in the circumferential direction of the other flywheel.
Field of SearchWith means to cool or lubricate clutch parts