Control system for continuously variable transmission and continuously variable transmission wherein such is utilized
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United States of America Patent
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Nov 30, 2004
Grant Date -
N/A
app pub date -
Jul 25, 2002
filing date -
Sep 15, 1999
priority date (Note) -
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Abstract
A control system for a continuously variable transmission and continuously variable transmission wherein such is utilised, includes a drive belt located between pulley discs of a first pulley and of a second pulley, the pulleys being rotatable at a rotational speed and being operable by a first and a second piston/cylinder assembly respectively. The control system controls the respective cylinder pressure in the first and second piston/cylinder assemblies, at least based on a torque signal representing the torque to be transmitted by the transmission and two speed signals representing the rotational speeds of the first and second pulley, for clamping the drive belt between the discs thereby enabling torque transmission between the pulleys and the drive belt.
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