Study on the transmission efficiency of electro-mechanical continuously variable transmission with adjustable clamping force

被引：15
|
作者：
Liu, Junlong [1 ,2 ]
Sun, Dongye [1 ,2 ]
Ye, Ming [3 ]
Liu, Xiaojun [1 ,2 ]
Li, Baogang [1 ,2 ]
机构：
[1] Chongqing Univ, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Sch Automot Engn, Chongqing 400044, Peoples R China
[3] Chongqing Univ Technol, Key Lab Mfg Test Tech Automobile Parts, Minist Educ, Chongqing 400054, Peoples R China
来源：
MECHANISM AND MACHINE THEORY | 2018年 / 126卷
基金：
中国国家自然科学基金;
关键词：
Continuously variable transmission; Electro-mechanical actuator; Frictional energy loss; Transmission efficiency; LOSS MECHANISMS; RATIO CONTROL; BELT; CVT; LOSSES; FRICTION;
D O I：
10.1016/j.mechmachtheory.2018.04.012
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The purpose of this study is to analyze the EMCVT transmission efficiency. Power loss of a continuously variable transmission (CVT) consists of the energy consumed by an actuator and frictional energy loss in a CVT variator. The objective of studying electro-mechanical continuously variable transmission (EMCVT) is reducing the energy consumed by a CVT actuator. However, power loss resulting from frictional loss may increase owing to increases in the driven pulley clamping force. And then a simplified transmission efficiency model of an EMCVT was established to analyze the energy consumed by an electro-mechanical actuator and frictional energy loss. Under ECE (Economic Commission for Europe) and EUDC (Extra Urban Driving Cycle) driving cycles, the energy consumed by an EMCVT is compared with that consumed by an electro-hydraulic CVT (EHCVT). Comparison results indicate that the EMCVT transmission efficiency is lower than that of an EHCVT. Thus, an EMCVT with two actuator motors is proposed to reduce the frictional energy loss in the variator. Simulation results indicate that the transmission efficiency of the proposed EMCVT exceeds that of an EHCVT. The frictional energy loss is reduced by controlling the driven pulley clamping force, and this improves the EMCVT transmission efficiency. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：468 / 478
页数：11
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