Interrelated power delivery controls – including engine control – Transmission control – Continuously variable friction transmission
Reexamination Certificate
2006-05-02
2006-05-02
Marmor, Charles A. (Department: 3681)
Interrelated power delivery controls, including engine control
Transmission control
Continuously variable friction transmission
C477S045000, C477S046000, C477S047000, C477S048000
Reexamination Certificate
active
07037235
ABSTRACT:
A speed change ratio control unit for a continuously variable transmission that uses a step motor as a driving actuator of a speed change control valve that compares a variable ASTP representing a step position of the step motor and a step position BSTP of the step motor that is necessary for realizing a desired speed change ratio at every predetermined operation cycle, and if ASTP≠BSTP is satisfied determines that a step-out has occurred on the step motor.
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EPO Search Report, dated Aug. 26, 2005.
Ishii Shigeru
Jozaki Tateki
Shimanaka Shigeki
Tanaka Hiroyasu
Wakahara Tatsuo
Blank Rome LLP
JATCO Ltd
Le David D.
Marmor Charles A.
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