Design and Fabrication of Electromechanical Valve Actuation Mechanism for Camless Engine
Date Issued
2007
Date
2007
Author(s)
Xu, Jia-Hong
DOI
en-US
Abstract
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.
Subjects
無凸輪引擎
電磁式汽門
混合磁動勢
雙通道平行磁路
camless engine
electromechanical valve actuator
hybrid MMF
dual-channel parallel polarized method
Type
thesis
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