Power-split continuously variable transmission apparatus having a summing planetary transmission
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United States of America Patent
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Nov 7, 2017
Issued Date -
Oct 6, 2016
app pub date -
Oct 14, 2014
filing date -
Nov 14, 2013
priority date (Note) -
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Abstract
A power-split, continuously variable transmission includes a summing planetary transmission, at least one additional planetary gear set and a variator, which are in operative connection with each other a plurality of shafts, the shafts of the plurality of shafts are couplable to each other with a plurality of shift elements in order to provide at least three transmission ratio ranges. The variator is a mechanical friction wheel variator with at least three shafts. The summing planetary transmission, the at least one additional planetary gear and the variator are arranged coaxial to one another. In one of the transmission ratio ranges of the at least three transmission ratio ranges, a total power is guidable between a transmission input shaft and a transmission output shaft by the variator. A friction wheel of the variator is approximately cone-shaped, at least in sections.
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