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Fully Flexible Electromagnetic Valve Actuator: Design, Modeling, and Measurements
Technical Paper
2008-01-1350
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Design, modeling, and measurements are discussed for a new direct-drive, electromagnetic valve actuator (EVA) for internal combustion engines. The actuator offers greater dynamic performance than previous designs and achieves fully flexible valve timing and lift, which provides great benefits in engine performance including increased engine efficiency, reduced emissions, and improved low-end performance.
The innovative actuator consists of simplified stationary permanent magnets, stationary coils, and a moving steel plunger that transmits significant bi-directional forces to the valve throughout the stroke.
Single- and double-actuator magnetic configurations, non-linear electromagnetic finite element analyses, system bond graphs, Simulink® simulations, and performance measurements of the actuator controlling intake valves on a cylinder head will be discussed. Future work, including on-engine dynamometer testing and an actuator design variant for exhaust valves, is briefly discussed.
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Citation
Cope, D., Wright, A., Corcoran, C., Pasch, K. et al., "Fully Flexible Electromagnetic Valve Actuator: Design, Modeling, and Measurements," SAE Technical Paper 2008-01-1350, 2008, https://doi.org/10.4271/2008-01-1350.Also In
References
- Wang, Y. Introduction to Engine Valvetrains SAE International Warrendale, PA 2007 25ff 13: 978-0-7680-1079-
- Stone, R. Kwan, E. “Variable Valve Actuation Mechanisms and the Potential for their Application,” SAE Paper 890673 1989
- Klein, F. et al “The Influence of the Valve Stroke Design in Variable Valve Timing Systems on Load Cycle, Mixture Formation and the Combustion Process in Conjunction with Throttle-free Load Governing,” SAE Paper 981030 1998
- Sellnau, M. Rask, E. “Two-Step Variable Valve Actuation for Fuel Economy, Emissions, and Performance SAE Paper 2003-01-0029 2003
- Ahmad, T. Theobald, M. “A Survey of Variable-Valve-Actuation Technology,” SAE Paper 891674 1989
- Dresner, T. Barken, P. “A Review and Classification of Variable Valve Timing Mechanisms,” SAE Paper 890674 1989
- Schechter, M. Levin, M. “Camless Engine,” SAE Paper 960581 1996
- Pierik, R. Burkhard, J. “Design and Development of a Mechanical Variable Valve Actuation System,” SAE Paper 2000-01-3307 2000
- Kreuter, P. et al “The Meta VVH System - A Continuously Variable Valve Timing System,” SAE Paper 980765 1998
- Carney, D. “Internal Combustion Engineering,” Automotive Engineering International May 2004 42
- “European Centers of Power,” Automotive Engineering International June 2004 67
- Pischinger F. Kreuter, P. “Arrangement for Electromagnetically Operated Actuators” U.S. Patent #4,515,343 May 7 1985 www.uspto.gov
- Wang, Y. Peterson, K. et al “Modeling and Control of Electromechanical Valve Actuator,” SAE Paper 2002-01-1106 2002
- Ansoft Corp. Pittsburgh, PA 412-261-3200 www.ansoft.com
- Cope, D. Wright, A. “Electromagnetic Fully Flexible Valve Actuator” SAE Paper 2006-01-0044 2006
- Hoffman, Bernhard “Fully Variable Valve actuation with electromagnetic Linear Motor” SIA Conference on Variable Valve Actuation 30 November 2006
- Lequesne, B. “Variable Lift Operation of Bistable Electromechanical Poppet Valve” US Patent 4,829,947 16 May 1989 www.uspto.gov