Apparatus for controlling continuously variable transmission

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74866, 474 12, F16H 918

Patent

active

046494855

ABSTRACT:
A continuously variable transmission (CVT) is controlled such that an actual engine speed Ne is equalized to a desired engine speed Ne'. Defining Nc as a positive constant, the speed ratio e of the CVT is substantially fixed during a period of time when the Ne changes from Ne<Ne'-Nc to Ne'-Nc.ltoreq.Ne<Ne' and then changes to Ne.gtoreq.Ne'. Ne'-Nc is defined as a temporarily desired engine speed during a period of time when the Ne changes from Ne.gtoreq.Ne' to Ne'-Nc.ltoreq.Ne<Ne' and then changes to Ne<Ne'-Nc. During the period of time the speed ratio of the CVT is changed such that the actual engine speed Ne is equalized to the temporarily desired engine speed Ne'-Nc.

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