主動式無段變速系統之實驗平台驅動效率研究

A Drive Efficiency Study of Active Type Continuously Variable Transmission System for Test Bench

范益誠(Yi-Chen Fan)

指導教授 ： 郭桂林

國立臺北科技大學/機電學院/車輛工程系所/碩士(2012年)

https://doi.org/10.6841/NTUT.2012.00615

摘要

皮帶式無段變速系統(Continuously Variable Transmission, CVT)具有換檔順暢、機構簡單、操作容易、方便維修等優點，使其長期成為速可達機車之傳動系統，但是在先天機構限制下，常需要耗損離心滾子及背推板滑動片，且在現在有的操作範圍內，其傳動效率一直處於較低的狀態，近年來環保意識的抬頭，二氧化碳的排放量越來越不能忽視，在未來的機車產業發展上勢必要以「環保」二字為前提。為了改善上述問題，並配合內燃機動力輸出特性，並調整減速比展現最有效率的動力輸出。
本研究在設計一套主動式無段變速系統，藉由各種感測器取得輸入轉速、輸出轉速、輸入扭力和輸出扭力，是為了能了解CVT效率低落之原因，並將功率損失分為速度損失和扭力損失來解釋各損失之原因，計算出即時的效率與減速比，進而搭配內燃機動力輸出性能與傳動系統，調整電動缸來改變減速比，從實驗中可得減速比從10到4的效率約可提升25%左右，如此可減少動力傳遞時的損失，提升能源效益。

關鍵字

速可達機車 ； 主動式無段變速系統 ； 效率分析

並列摘要

Rubber Belt-type Continuously Variable Transmission (CVT) has advantages of a smooth shifting, and simple bodies, easy operation, convenient maintenance, etc., therefore it is still used as the transmission system of the scooter, but in the inherent institutional constraints often depletion of the centrifugal roller and sliding, and in the normal operating range, the transmission efficiency has been low state, Due to the rise of environmental awareness, carbon dioxide emissions in recent years increases which can not be ignored in the future development of the motorcycle industry is bound to the word "green" as a precondition. In order to improve the above problems, and with the internal combustion engine power output characteristics, and adjust the deceleration of the most effective power output than the show.
In this study, to design a set of Active Type Continuously Variable Transmission, by a variety of sensors to obtain the input speed, output speed, input torque and output torque, in order to understand the inefficiencies of CVT, and the power loss into speed loss and torque loss to explain the reasons for the loss, and then with the internal combustion engine output performance and transmission, adjusting the stepper motor to change the reduction ratio from the experiment, reduction ratio from 10 to 4 the efficiency increase about 25%, and so can reduce the loss of power transmission to improve energy efficiency.

並列關鍵字

Scooter ； Active Type Continuously Variable Transmission ； Efficiency

參考文獻

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