@inproceedings{75d60e08ba554a86a9358db1c21ddf02,
title = "Dynamics of new electromagnetic valve in camless engines",
abstract = "Conventional electromagnetic valvetrain (EMV) usually uses double E-coils to control valve timings for engines. This kind of EMV needs large energy to reset valve at engine start state and requires energy to hold valve at opening or closing position. Therefore, it consumes large amount of energy. In this study, an EMV system that uses hybrid permanent magnet and electromagnetic coil together is proposed. The use of EMV in SI engines allows valve timings to be variably controlled without camshaft. Dynamic models for the new EMV have been built to simulate and analyze valve dynamics in this study. Effects of gas flow resistance on valve surface and the damping coefficient are also discussed. Besides, actuation strategy for valve releasing is investigated. The results show that the new EMV satisfies requirements about lifting time, actuation energy, valve velocity and acceleration in SI engines.",
keywords = "Camless engine, Electromagnetic valvetrain, Valve dynamics, Variable valve timing",
author = "Dat, \{Ly Vinh\} and Yaojung Shiao and Tsou, \{Ku Hsiao\}",
year = "2013",
doi = "10.4028/www.scientific.net/AMM.284-287.2044",
language = "???core.languages.en\_GB???",
isbn = "9783037856123",
series = "Applied Mechanics and Materials",
pages = "2044--2048",
booktitle = "Innovation for Applied Science and Technology",
note = "2nd International Conference on Engineering and Technology Innovation 2012, ICETI 2012 ; Conference date: 02-11-2012 Through 06-11-2012",
}