Dynamics and Control of a Free-Piston Diesel Engine

[+] Author and Article Information
Tor A. Johansen, Olav Egeland

Department of Engineering Cybernetics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway

Erling Aa. Johannessen, Rolf Kvamsdal

Kværner ASA, Technology Development, Postboks 169, N-1325 Lysaker, Norway

J. Dyn. Sys., Meas., Control 125(3), 468-474 (Sep 18, 2003) (7 pages) doi:10.1115/1.1589035 History: Received June 14, 2001; Revised February 20, 2003; Online September 18, 2003
Copyright © 2003 by ASME
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Sketch of multi-cylinder free-piston engine, indicating mass and energy flows
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Geometric cycle parameters
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Main engine parameters as a function of load (theoretical calculations)
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Nonlinear gain as a function of load
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Piston motion (xBDC and xTDC positions) and control input mdi and ma when the load of the engine is increased from idle to about 40 percent using a throttle in the exhaust pipe. Curves for the exhaust manifold pressure pe, scavenging pressure pr and intake manifold pressure pi are also shown.




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