| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power split type infinite variable-speed drive which enlarges a width of a total transmission ratio to improve a travel fuel consumption without increasing a gear ratio of a planetary gear mechanism as well as increasing the belt ratio toγmax or more and reducing the belt ratio toγmin or less.SOLUTION: A power split type infinite variable-speed drive 1 includes an infinite variable-speed mechanism 2, a constant variable-speed mechanism 3, and a planetary gear mechanism 4 which synthesizes the powers from both of the variable-speed mechanisms. The power split type infinite variable-speed drive 1 can switch between an infinite variable-speed mode in which the power is transmitted only to the infinite variable-speed mechanism 2, and a power split mode in which the power is transmitted to both of the constant variable-speed mechanism 3 and the infinite variable-speed mechanism 2, and further includes a constant variable-speed mode in which the power is transmitted only to the constant variable-speed mechanism 3.</p> |
