One of the core objectives of the CVT project
has been to generate the best alternative solution in order to meet the
challenges of the current CVT designs. During the 5th week of the
project the concept generation phase was initiated. Initially, much time
was spent on gathering information by doing extensive searching in scientific
journals, patents, and textbooks at Bechtel Library; contacting experts in CVT
and professionals in this field; and acquiring knowledge about current CVT
mechanisms using Google Scholar. It was determined that the most widely known
CVT mechanism (Belt CVT) eliminates the unnecessary ramp ups in RPMs between
gears while changing speed, which allows the engine to run at the most efficient
RPM, and reduces the wear and tear from shifting. However, it was also
determined that the Belt pulley systems are limited in their performance since
they rely on high friction to drive, but low friction to vary ratios. This leads
to low efficiency, minimized effectiveness in high performance, and reduced life
cycle.