US 5,733,218 AGranted

Flywheel having two centrifugal masses and a torsional vibration damper with gear train elements which can be adjusted as a function of load

AssigneeFichtel & Sachs AG

InventorsJorg Sudau, Erwin Wack

Life of this patent

Estimating the term…

Loading patent…

Abstract

A torsional vibration damper has an input-side transmission element and an output-side transmission element, at least one of which is connected, preferably by means of a spring device, with at least one moment-transmitting element of a gear train which acts between the two transmission elements. At least one of the moment-transmitting gear train elements can be aligned before the creation of a connection to the corresponding element with some play, or clearance, at least in the radial direction, with respect to this element carrier, and after the application to the gear train of an adjustment moment which effects an alignment of this transmission element with respect to the other transmission elements as a function of the force by moving the two transmission elements into a predetermined relative position, the gear train element in question can be provided with a connection to the element carrier which fixes the element in its position where it has been aligned as a function of the force.

Claims13

Dependent claims

A transmission system for a motor vehicle, said transmission system comprising:

a flywheel assembly, said flywheel assembly having an axis of rotation and defining an axial direction parallel to the axis of rotation;
a pressure plate disposed adjacent said flywheel assembly;
a clutch disc disposed between said pressure plate and said flywheel assembly;
said clutch disc comprising friction linings for contacting said pressure plate and said flywheel assembly upon engagement of said clutch disc;
a clutch housing disposed adjacent said pressure plate and being releasably fastened to said flywheel assembly;
said pressure plate being movably fastened to said clutch housing;
said pressure plate comprising means for engaging said clutch disc with said flywheel assembly;
said flywheel assembly comprising:
a first flywheel portion, said first flywheel portion comprising means for fastening said first flywheel portion to a crankshaft of an internal combustion engine;
a second flywheel portion disposed adjacent said first flywheel portion, said second flywheel portion being rotatable with respect to said first flywheel portion;
a planetary gear system;
said planetary gear system comprising a plurality of gear components;
said gear components comprising:
a) a sun gear,
b) a ring gear, and
c) at least one planetary gear;
means for fastening one of said gear components to one of:
said first flywheel portion;
and
said second flywheel portion;
one of said gear components comprising means for providing clearance between said means for fastening and one of:
one of said flywheel portions;
and
said one of said gear components fastened by said fastening means.

21 more elements

A method of assembling a transmission system for a motor vehicle, said transmission system comprising:

a flywheel assembly, said flywheel assembly having an axis of rotation and defining an axial direction parallel to said axis of rotation;
a pressure plate disposed adjacent said flywheel assembly;
a clutch disc disposed between said pressure plate and said flywheel assembly;
said clutch disc comprising friction linings for contacting said pressure plate and said flywheel assembly upon engagement of said clutch disc;
a clutch housing disposed adjacent said pressure plate and being releasably fastened to said flywheel assembly;
said pressure plate being movably fastened to said clutch housing;
said pressure plate comprising means for engaging said clutch disc with said flywheel assembly;
said flywheel assembly comprising:
a first flywheel portion, said first flywheel portion comprising means for fastening said first flywheel portion to a crankshaft of an internal combustion engine;
a second flywheel portion disposed adjacent said first flywheel portion, said second flywheel portion being rotatable with respect to said first flywheel portion;
a planetary gear system;
said planetary gear system comprising a plurality of gear components;
said gear components comprising:
a) a sun gear, b) a ring gear, and c) at least one planetary gear;
means for fastening one of said gear components to one of:
said first flywheel portion;
and said second flywheel portion;
said fastening means for fastening one of said gear components to one of:
said first flywheel portion;
and said second flywheel portion;
and one of said gear components comprising means for providing clearance between said means for fastening and one of:
one of said flywheel portions;
and said one of said gear components fastened by said fastening means;
said method comprising the steps of:
providing a flywheel assembly, said flywheel assembly having an axis of rotation and defining an axial direction parallel to the axis of rotation;
providing a pressure plate;
providing a clutch disc;
providing said clutch disc with friction linings for contacting said pressure plate and said flywheel assembly upon engagement of said clutch disc;
providing a clutch housing;
providing said pressure plate with means for engaging said clutch disc with said flywheel assembly;
providing said flywheel assembly with:
a first flywheel portion;
means for fastening said first flywheel portion to a crankshaft of an internal combustion engine;
a second flywheel portion, said second flywheel portion being rotatable with respect to said first flywheel portion;
a planetary gear system;
providing said planetary gear system with a plurality of gear components, said gear components comprising:
a) a sun gear,
b) a ring gear, and
c) at least one planetary gear;
providing means for fastening one of said gear components to one of:
said first flywheel portion;
and
said second flywheel portion;
and
providing one of said gear components with means for providing clearance between said means for fastening and one of:
one of said flywheel portions;
and
said one of said gear components fastened by said fastening means;
said method further comprising the steps of:
disposing said pressure plate adjacent said flywheel assembly;
disposing said clutch disc between said pressure plate and said flywheel assembly;
disposing said clutch housing adjacent said pressure plate;
releasably fastening said clutch housing to said flywheel assembly;
movably fastening said pressure plate to said clutch housing;
fastening said first flywheel portion to a crankshaft of an internal combustion engine with said fadtening means;
disposing said second flywheel portion adjacent said first flywheel portion;
disposing at least one of said gear components with respect to another of said gear components;
disposing said means for fastening within said means for providing a clearance;
aligning said at least one of said gear components adjusting a position of said fastening means within said means for providing clearance;
and
fastening said one of said gear components to at least one of said one of:
said first flywheel portion;
and
said second flywheel portion while maintaining the position of said means for fastening within said means for providing clearance.

61 more elements

Torsional vibration damper, for clutches of motor vehicles, with an input-side transmission element and an output-side transmission element, at least one of which is connected, preferably by means of a spring device, with at least one moment-transmitting element of a gear train which acts between the two transmission elements, said at least one moment-transmitting element comprising a plurality of gear train elements, wherein at least one of the gear train elements can be aligned, before the creation of a connection with a respective element carrier, with clearance at least in one predetermined direction with respect to the respective element carrier, and after the application to the gear train of an adjustment moment which effects an alignment of this gear train element with respect to the other moment-transmitting transmission elements as a function of load by moving the two transmission elements into a predetermined relative position, can be provided with a connection which fixes the gear train element in its aligned position as a function of the load with respect to the respective element carrier.

Dependencies are inferred from the claim text.