ENGINE BRAKING PRIMARY CLUTCH FOR CVT SYSTEMS

摘要

A continuously variable transmission (CVT) system assembly includes first and second sheave assemblies, a cylindrical sleeve coupler and an engine braking assembly The first sheave portion has a centrally extending post The cylindrical sleeve coupler is rotationally mounted on a portion of the post The sleeve coupler has an engaging surface configured to engage an inner face of a drive belt, a second sheave portion has a central passage that is rotationally mounted on the sleeve coupler The engine braking assembly is operatively coupled to the second sheave portion and the sleeve coupler to axially move the second sheave portion toward the first sheave portion to engage first and second side faces of the drive belt when the sleeve coupler attempts to overrun the post of the first sheave portion in a direction provided by an engine coupled to the primary clutch.