押しブロック式金属Vベルトを用いたCVTに関する研究 : 伝達トルクとプーリ軸推力の関係

抄録

Transmitted torque, thrusts of driving and driven pulleys, and axial force between two pulleys were measured on a metal-pushing V-belt-type CVT. Thrust ratios between driving and driven pulleys at several different speed ratios were plotted with respect to torque ratio and compared. It was found that the relationship between thrust ratio and speed ratio was almost independent of rotational speed of the pulley and the maximum transmittable torque at a constant torque ratio. The thrust ratio is primarily a function of speed ratio. It also depends on torque ratio and coefficient of friction between blocks and a pulley. An empirical equation for pulley thrust balance was derived. The equation is expressed in an explicit form. It is so simple that it can be applicable to electronic control of CVT.