An identification structure for components of a clutch piston mechanism capable of facilitating distinction of types of the components of the clutch piston mechanism. The identification structure for components of the clutch piston mechanism according to an embodiment of the present invention includes an identifying part that is provided to a piston seal as a component of the clutch piston mechanism and is used for identifying the piston seal. The identifying part has a pattern formed by differences in surface roughness.

A clutch for a motor vehicle with a wear compensation mechanism which includes a sensor element for detecting wear, wherein the sensor element is formed of a plurality of parts, and at least two sensor component parts are rotatably connected to one another.

A balance module 10 for a clutch comprises a first annular piston part 11, a second annular piston part 12, which is arranged opposite the first piston part 11 in the axial direction and spaced therefrom, at least three spring elements 13 operating in the axial direction, which are arranged axially between the first 11 and the second piston part 12, and a sealing element 14 with at least one radially outwardly directed sealing lip 15, which is attached on the first piston part 11. The spring elements 13, the first 11 and the second piston part 12 are connected to one another in a loss-proof manner, in order to form an integral module 10.

A balance module 10 for a clutch comprises a first annular piston part 11, a second annular piston part 12, which is arranged opposite the first piston part 11 in the axial direction and spaced therefrom, at least three spring elements 13 operating in the axial direction, which are arranged axially between the first 11 and the second piston part 12, and a sealing element 14 with at least one radially outwardly directed sealing lip 15, which is attached on the first piston part 11. The spring elements 13, the first 11 and the second piston part 12 are connected to one another in a loss-proof manner, in order to form an integral module 10.

A self-adjusting clutch mechanism has a pressure plate, a wear compensation plate, a wear sensor adjusting plate, a wear sensor, a clutch cover, a first screw thread, and a second screw thread. The mechanism on the clutch pressure plate can keep clutch pedal load and clutch clamp load constant.

A self-adjusting clutch mechanism has a pressure plate, a wear compensation plate, a wear sensor adjusting plate, a wear sensor, a clutch cover, a first screw thread, and a second screw thread. The mechanism on the clutch pressure plate can keep clutch pedal load and clutch clamp load constant.

A clutch (100) having: a fixed hub (201), a movable hub (202), a plurality of discs (204). The fixed hub (201) and the movable hub (202) axially slide, getting farther or closer so as to transmit a variable axial load onto the discs (204). The clutch (100) has a pressure plate assembly (208) including a centrifugal assembly (210), having: a rotatable mass holder (211) and a plurality of mass elements (212) radially disposed. Each mass element (212) has a pivot (301) and is configured for a displacement (1002) by pivoting under centrifugal effects. The mass elements (212) are configured for bringing the movable hub (202) closer to the fixed hub (201), so as to increase the variable axial load and allowing the clutch (100) (automatic) engagement. Each mass element (212) has a main body (302) and a column element (303) which connects the pivot (301) with the main body (302).

A clutch (100) having: a fixed hub (201), a movable hub (202), a plurality of discs (204). The fixed hub (201) and the movable hub (202) axially slide, getting farther or closer so as to transmit a variable axial load onto the discs (204). The clutch (100) has a pressure plate assembly (208) including a centrifugal assembly (210), having: a rotatable mass holder (211) and a plurality of mass elements (212) radially disposed. Each mass element (212) has a pivot (301) and is configured for a displacement (1002) by pivoting under centrifugal effects. The mass elements (212) are configured for bringing the movable hub (202) closer to the fixed hub (201), so as to increase the variable axial load and allowing the clutch (100) (automatic) engagement. Each mass element (212) has a main body (302) and a column element (303) which connects the pivot (301) with the main body (302).

A reaction plate for a clutch including an annular body, the annular body including an inner circumferential edge, an outer circumferential edge, a first surface between the inner and outer circumferential edges and facing a first axial direction and a second surface between the inner and outer circumferential surfaces and facing a second axial direction, the second surface including recesses covering at least 50 percent of the second surface. A clutch assembly including a friction plate, the friction plate having a first axially-facing surface including a friction material, a reaction plate, the reaction plate having a second axially-facing surface including recesses covering at least 50 percent of the second axially-facing surface and an actuation means arranged to displace the friction plate or the reaction plate such that the first and second axially-facing surfaces frictionally engage. A method of fabricating a reaction plate for a clutch.

A reaction plate for a clutch including an annular body, the annular body including an inner circumferential edge, an outer circumferential edge, a first surface between the inner and outer circumferential edges and facing a first axial direction and a second surface between the inner and outer circumferential surfaces and facing a second axial direction, the second surface including recesses covering at least 50 percent of the second surface. A clutch assembly including a friction plate, the friction plate having a first axially-facing surface including a friction material, a reaction plate, the reaction plate having a second axially-facing surface including recesses covering at least 50 percent of the second axially-facing surface and an actuation means arranged to displace the friction plate or the reaction plate such that the first and second axially-facing surfaces frictionally engage. A method of fabricating a reaction plate for a clutch.