US 4,729,464 AGranted

Apparatus for compensating for fluctuations of transmission of torque by an internal combustion engine

AssigneeLuk Lamellen und Kupplungsbau GmbH

InventorOswald Friedmann

Life of this patent

Estimating the term…

Loading patent…

Abstract

Apparatus for transmission of torque between the crankshaft of the internal combustion engine and the input shaft of the change-speed transmission in a motor vehicle has a flywheel composed of two coaxial sections which are rotatable within limits relative to each other against the opposition of an interposed damper. One of the sections is bolted to the crankshaft and the other section is mounted on two antifriction bearings which surround a tubular support of the transmission housing. A friction clutch is interposed between the second section of the flywheel and the input shaft of the transmission. The mounting of the second section on the housing of the transmission, instead of customary mounting of one section on the other section, prolongs the useful life of the apparatus because the bearings are subjected to less pronounced and more uniformly distributed wear and each of their parts can be fully lubricated in response to engagement of the clutch.

Claims16

Dependent claims

Apparatus for transmitting torque between an internal combustion engine and a transmission having a housing and a rotary input element, particularly the change-speed transmission of a motor vehicle, comprising a composite flywheel including a plurality of coaxial flywheel sections, said sections comprising a first section and a second section and said first and second sections being rotatable relative to each other, said second section comprising a first pressure plate which is held against axial movment relative to the input element of the transmission;

damper means for yieldably opposing rotation of said first and second section relative to each other, said damper means comprising an input component arranged to rotate with said first section and an output component arranged to rotate with said second section, said components having registering windows and said damper means further comprising energy storing means acting in the circumferential direction of said sections and installed in said windows;
means for non-rotatably fastening said first section to the engine;
means for releasably coupling said second section to the input element of the transmission, said coupling means comprising a second pressure plate which is movable axially with reference to said first pressure plate and a clutch disc interposed between said pressure plates and non-rotatably secured to the input element of the transmission;
and means for non-rotatably but substantially axially movably securing one of said components to the respective section, including mating teeth on said one component and the respective section.

1 more element

Dependencies are inferred from the claim text.