| 摘要 |
PROBLEM TO BE SOLVED: To provide a tensile force control method of a continuously variable transmission capable of controlling effective belt tensile force optimum by precisely finding a belt winding radius of a drive pulley. SOLUTION: The continuously variable transmission controls energizing force of a tensioner device 11 in accordance with the effective belt tensile force Te by winding a belt 5 between the drive pulley 2 and a driven pulley 4 and computing the effective belt tensile force Te by a ratio of input torque Mi to the drive pulley 2 and the belt winding radius R1 of the drive pulley 2. An axial rotational frequency ratio z is found form axial rotational frequency N1 of the drive pulley 2 and axial rotational frequency N2 of the driven pulley 4, and the belt winding radius R1 is found from overall length L of the belt, an inter-axis distance C of the drive pulley 2 and the driven pulley 4 and the axial rotational frequency ratio z.
|
