| US 7,350,634 B2 | ||
| Method for adjusting an incremental path measurement unit in an actuation device of a pressure-closed clutch as well as an actuation device | ||
| Markus Baehr, Achern (Germany); Christian Rieger, Bischweier (Germany); Juergen Gerhart, Appenweier (Germany); Gerd Jaeggle, Sasbach (Germany); and Reinhard Berger, Buehl (Germany) | ||
| Assigned to LuK Lamellen und Kupplungsbau Beteillgungs KG, Buehl (Germany) | ||
| Filed on Jun. 28, 2005, as Appl. No. 11/168,854. | ||
| Claims priority of application No. 10 2004 031 481 (DE), filed on Jun. 30, 2004. | ||
| Prior Publication US 2006/0016662 A1, Jan. 26, 2006 | ||
| Int. Cl. F16D 48/06 (2006.01); F16D 25/12 (2006.01) | ||
| U.S. Cl. 192—85R [192/30 W; 192/110 R] | 4 Claims |
| 1. A method for adjustment of an incremental path measurement unit in an actuation device of a pressure-closed clutch, where
the actuation device contains an actuator (10, 12, 14) whose position is acquired by an incremental sensor (42) and that is connected with a transmitter piston (16) which is displaceably contained in a cylinder unit (18) and having a snifting borehole (34), the cylinder unit (18) is connected via a hydraulic segment (22) to a receiving cylinder (30) with a displaceable receiver piston (26) which actuates the clutch (28), which method involves the following steps:
acquiring a force that the actuator (10, 12, 14) needs to move the transmitter piston (16);
acquiring an output signal of the incremental sensor (42) at a point in time at which the force changes abruptly as the transmitter piston (16) runs over the snifting borehole (34); and,
fixing the output signal of the incremental sensor (42) at the point in time of the abrupt change as a new reference signal.
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