Apparatus for counteracting torsional stresses
AssigneeLuk Lamellen und Kupplungsbau GmbH
InventorsWolfgang Reik, Hans-Dieter Elison
Life of this patent
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Abstract
A vibration damping apparatus which is installed in the power train between the crankshaft of an internal combustion engine and the input shaft of a change-speed transmission in a motor vehicle has two coaxial flywheels which are rotatable relative to each other against the opposition of one or more dampers. The damper or dampers are installed in a fluid-containing chamber which is provided at least in part in one of the flywheels.
Claims33
Apparatus for reducing fluctuations of torque which is transmitted between a first flywheel connectable to an output element of a combustion engine and a second flywheel which is rotatable relative to the first flywheel and has a friction surface engageable with a friction element of a friction clutch and transmits torque between the first flywheel and the friction clutch, comprising means for centering said flywheels including an antifriction roller bearing, one of said flywheels comprising a first wall;
- a second wall carried by said one flywheel and defining with the first wall an at least substantially sealed chamber for a supply of viscous fluid medium which at least partially fills said chamber, said second wall having means for sealing said chamber and said second wall being out of contact with said bearing;
- a starter gear on one of said walls;
- and a damper device disposed in said chamber and including at least one energy storing element which is resilient in the circumferential direction of and connects said flywheels to each other.
Apparatus for reducing fluctuations of torque which is transmitted between a first flywheel connectable to an output element of a combustion engine and a second flywheel which is rotatable relative to the first flywheel and is connectable with an input element of a transmission by a friction clutch, comprising means for centering said flywheels including an antifriction roller bearing;
- a first wall carried by one of said flywheels, said one flywheel being of one piece with a second wall directly defining with said first wall at least a portion of an at least partially sealed chamber for a supply of viscous fluid medium which at least partially fills said chamber, said first wall including means for sealing said chamber and said first wall being out of contact with said bearing;
- and a damper device disposed in said chamber and including at least one energy storing element which is resilient in the circumferential direction of and connects said flywheels to each other.
Apparatus for reducing fluctuations of torque which is transmitted between a first flywheel connectable to an output element of a combustion engine and a second flywheel which is rotatable relative to the first flywheel and is connectable with an input element of a transmission by a friction clutch, comprising means for centering said flywheels including an antifriction roller bearing, one of said flywheels being immediately adjacent the combustion engine and supporting an at least partially sealed chamber which is at least partially filled with a viscous fluid medium, said chamber being defined by a first wall forming part of and of one piece with said one flywheel and by a second wall between said first wall and the other of said flywheels, said second wall being out of contact with said bearing;
- and a damper device disposed in said chamber and including at least one energy storing element which is resilient in the circumferential direction of and connects said flywheels to each other.
Apparatus for reducing fluctuations of torque which is transmitted between a first flywheel connectable to an output element of a combustion engine and a second flywheel which is rotatable relative to the first flywheel and has a friction surface engageable with a friction element of a friction clutch and transmits torque between the first flywheel and the friction clutch, comprising:
- means for centering said flywheels including an antifriction roller bearing;
- a plurality of components defining an at least partially sealed chamber which is at least partially filled with a viscous fluid medium and is carried by one of said flywheels;
- a starter gear on one of said components, said starter gear being directly carried by the components that form the chamber;
- and
- a damper device provided in said chamber and including at least one energy storing element acting in the circumferential direction of and connecting said flywheels to each other, said at least one energy storing element having springy coils.
Apparatus for reducing fluctuations of torque which is transmitted between a first flywheel connectable to an output element of a combustion engine and a second flywheel which is rotatable relative to the first flywheel and has a friction surface engageable with a friction element of a friction clutch and transmits torque between the first flywheel and the friction clutch, comprising means for centering said flywheels including an antifriction roller bearing;
- a first wall carried by one of said flywheels;
- a second wall forming part of and of one piece with said one flywheel and directly defining with said first wall at least a portion of an at least partially sealed chamber which is carried by said one flywheel and is at least partially filled with a viscous fluid medium;
- and a damper device disposed in said chamber and including at least one energy storing element which comprises springy coils and is resilient in the circumferential direction of and connects said flywheels to each other.
Dependencies are inferred from the claim text.