A custom-designed limited-angle actuator for an electromechanical engine valve drive Part I: Conceptual design
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Kassakian_A custom-designed.pdf
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Author(s)
Qiu, Yihui
Perreault, David J.
Kassakian, John G.
Keim, Thomas A.
Date Issued
July 2010
Journal
Proceedings of the 5th IET International Conference on Power Electronics, Machines and Drives (PEMD), 2010
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Yihui Qiu et al. “A Custom-designed Limited-angle Actuator for an Electromechanical Engine Valve Drive. Part I: Conceptual Design.” Proceedings of the 5th IET International Conference on Power Electronics, Machines and Drives (PEMD), 2010. WE241–WE241. © 2010 IEEE
Version
Final published version
Abstract
Research has shown that variable valve timing (VVT) can improve significantly the performance of internal combustion (IC) engines, including higher fuel efficiencies, lower emissions, and larger torque outputs at each point of the engine map. To achieve independent and continuous VVT for each valve, an electromechanical valve drive (EMV) system was proposed previously, whose feasibility with low seating velocity had been demonstrated. In order to further improve the practicality of the EMV system, especially for a much smaller system package, a novel rotary actuator with limited angular range is proposed in this paper. Four main design challenges are discussed before a limited-angle actuator with a special yoke structure and a hollow basket-shaped aluminium-based armature is presented. Based on Maxwell simulation with optimized physical dimensions, the actuator is capable of meeting the time, power, torque, and size constraints.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Laboratory for Electromagnetic and Electronic Systems
Massachusetts Institute of Technology. Microsystems Technology Laboratories
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1049/cp.2010.0192
