Design and Fabrication of Electromechanical Valve Actuation Mechanism for Camless Engine

• Main Authors: Jia-Hong Xu, 徐家鴻
• Other Authors: Yee-Pien Yang
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/67697310430090370737

碩士 === 國立臺灣大學 === 機械工程學研究所 === 95 === For the sake of the environmental consciousness rising, it is necessary to improve internal combustion engine for high efficiency. Electromechanical valve actuator system (EMVA) uses solenoid to drive each valve independently for achieving variable valve timing (VVT). The main issues of the present research (EMVA) aims to the lower power source needed and hybrid magneto-motive force (MMF) usage. The design procedures depicted in the order as: establish mathematical model via magnetic circuit, optimization, and verified by FEA. The proposed prototype shows a lot of advantages comparing with conventional EMV as following: compact, high temperature tolerance, fast response, no starting current, different current actuating timing and easy for control. It is expected to accomplish VVT in the future achievements.