SIMULATED STEPPED GEAR RATIO CONTROL METHOD FOR A BALL-TYPE CONTINUOUSLY VARIABLE TRANSMISSION
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United States of America Patent
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Issued Date -
Mar 23, 2017
app pub date -
Sep 14, 2016
filing date -
Sep 17, 2015
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Abstract
Provided herein is a control system for a multiple-mode continuously variable transmission having a ball planetary variator operably coupled to multiple-mode gearing. The control system has a transmission control module configured to receive a plurality of electronic input signals, and to determine a mode of operation from a plurality of control ranges based at least in part on the plurality of electronic input signals. The system also has a ratio shift schedule module configured to store at least one shift schedule map, and configured to determine a desired speed ratio of the variator based at least in part on the mode of operation.
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