複合遊星歯車装置を基本型としたトラクタ用無段変速機の開発 : 第2報,車両搭載用変速機の設計製作と検証実験

概要

論文の詳細を見る
A new type of a tractor's continuously variable transmission (CVT), which consists of a 2 K-H type differential gear and a hydrostatic power transmission (HST) is devised. The hydrostatic power transmission (HST) consisted of a hydraulic pump and motor, which is a kind of CVT, has been applied to the smaller horsepower range of the tractor recently. One of concerns of the current HST system is lower efficiency on the power transmission. Then, further improvement for efficiency of the transmission is required more recently. The purpose of this development is to devise an adequate CVT providing with higher efficiency of the transmission in comparison with the current HST systems. Theoretical velocity ratio and efficiency of the CVT are investigated. And a prototype CVT is manufactured and incorporated into the tractor. The experimental results show that the efficiency of prototype CVT is several percent lower than theoretical value, but very nearly value. Then, the high efficient transmission for the tractor is offered. And the design method for the tractor's CVT that has high efficiency is built up.
社団法人日本機械学会の論文
2006-07-25