Design and Experimental Implementation of an Electromagnetic Engine Valve Drive
Author(s)
Parlikar, T.A.; Chang, W.S.; Qiu, Y.H.; Seeman, M.D.; Perreault, David J.; Kassakian, John G.; Keim, Thomas A.; ... Show more Show less
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In conventional internal combustion engines, engine valve displacements are fixed relative to crankshaft position. If these valves were actuated as a variable function of crankshaft angle, significant improvements in fuel economy could be achieved. To this end, a new type of electromagnetic valve drive system (EMVD) for internal combustion engines was more recently proposed. This EMVD incorporates a disk cam with a very desirable nonlinear profile which that functions as a nonlinear mechanical transformer. Modeling and simulation results showed significant advantages of this EMVD over previously designed electromagnetic engine valve drives. In this articles, we describe an experimental implementation of the proposed EMVD, which was developed to confirm these benefits. The EMVD apparatus was designed, constructed, and integrated into a computer-controlled experimental test stand. The experimental results confirm the benefits of using a nonlinear mechanical transformer in a motordriven engine-valve spring system, as seen in the small average power consumption and low valve seating velocity. In addition, a valve transition time sufficient for 6000-rpm engine operation was achieved. The results also suggest ways to improve the EMVD apparatus in the future.
Date issued
2005-10Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Laboratory for Electromagnetic and Electronic SystemsJournal
IEEE/ASME Transactions on Mechatronics
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Parlikar, T.A., W.S. Chang, Y.H. Qiu, M.D. Seeman, D.J. Perreault, J.G. Kassakian, and T.A. Keim. “Design and Experimental Implementation of an Electromagnetic Engine Valve Drive.” IEEE/ASME Transactions on Mechatronics 10, no. 5 (October 2005): 482–494. © 2005 IEEE
Version: Final published version
ISSN
1083-4435
1941-014X