Interrelated power delivery controls – including engine control – Transmission control – Continuously variable friction transmission
Reexamination Certificate
2008-05-27
2008-05-27
Lewis, Tisha D (Department: 3681)
Interrelated power delivery controls, including engine control
Transmission control
Continuously variable friction transmission
C477S050000
Reexamination Certificate
active
11810389
ABSTRACT:
A method for determining a slip value describing the reliability of torque transmission between two conical disk pairs of a continuously variable transmission. The conical disk pairs are frictionally engaged by an endless torque-transmitting component. The contact pressure between at least one conical disk pair and the endless torque-transmitting component is modulated, and the slip value is determined from the difference in rotational speeds of the conical disk pairs upon modulation of the contact pressure. The pressure modulation is carried out at a modulation frequency that is above the transmission ratio adjustment frequency of the transmission and at a predetermined amplitude.
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Translation for DE 10310831 (cited as X reference in search report).
Lewis Tisha D
LuK Lamellen und Kupplungsbau Beteiligungs KG
Mangels Alfred J.
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