Dynamics and Control of a Free-Piston Diesel Engine

Author:

Johansen Tor A.1,Egeland Olav1,Johannessen Erling Aa.2,Kvamsdal Rolf2

Affiliation:

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

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

Abstract

Free-piston diesel engines are characterized by freely moving pistons without any crankshaft or camshaft connected to the pistons. This allows a compact and efficient engine design, but requires automatic control of the piston motion. This paper present a dynamic mathematical model of a free-piston diesel engine, and a control oriented dynamic analysis leading to a piston motion control structure. Experimental results using a full scale test cylinder are included and show feasibility of the suggested control approach.

Publisher

ASME International

Subject

Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering

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