Results 181 to 190 of about 1,435 (236)

Hybrid simulation of a free piston engine

Proceedings of the April 26-28, 1966, Spring joint computer conference on XX - AFIPS '66 (Spring), 1966
The free piston engine principle is one which has intrigued mechanical engineers for decades. Indeed, the original gas engine of Otto and Langden employed a piston assembly which did not contain the now conventional connecting rod and camshaft arrangement and hence may be considered as an early implementation of the free piston principle.
R. E. Gagne, E. J. Wright
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Motion control of a hydraulic free-piston engine

2012 American Control Conference (ACC), 2012
Free-piston engine (FPE), as an alternative of the conventional internal combustion engine, has a high potential in terms of energy saving given its wide range of potential applications and high efficiency. One of the technical barriers that prevents the wide spread of this technology is the lack of precise piston motion control.
Ke Li, Ali Sadighi, Zongxuan Sun
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Hydraulic free piston engine — Challenge for control

1999 European Control Conference (ECC), 1999
A hydraulic free piston engine, HFPE, combines a diesel engine and a hydraulic pump into one compact component. In practical view there is only one linearly moving part in the HFPE, the piston assembly, which contains combustion and hydraulic pistons and piston rod.
Researcher Seppo Tikkanen, Matti Vilenius   +1 more
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Design of a Free-Piston Engine-Pump

SAE Technical Paper Series, 1992
<div class="htmlview paragraph">Off-highway mining and construction equipment typically converts all the power output of the engine to hydraulic power, with this power then used to perform the earth-moving operations, and also to propel the vehicle. This equipment presents significant opportunities for a new type of powerplant designed to deliver
Norman H. Beachley, Frank J. Fronczak
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A review of free-piston linear engines

Applied Energy, 2016
Abstract Unlike conventional internal combustion engines, a free-piston linear engine has no a crankshaft, and thus the pistons move freely in the cylinder. This allows a free-piston linear engine to easily adjust the compression ratio and optimize the combustion process.
Nguyen Ba Hung, Ocktaeck Lim
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Horsepower with Brains: The Design of the CHIRON Free Piston Engine

SAE Technical Paper Series, 2000
<div class="htmlview paragraph">The C<span class="small-caps">HIRON</span> is a hydraulic free piston engine developed by the Dutch companies NOAX and Innas. In the C<span class="small-caps">HIRON</span> the energy of the combustion process is almost directly converted into hydraulic energy. The C<span class="small-caps"
Achten, P.A.J., Oever, van den, J.P.J., Potma, J., Vael, G.E.M.   +3 more
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Development of an In-Cylinder Pressure Observer for Free-Piston Engines

2018 IEEE Conference on Control Technology and Applications (CCTA), 2018
Reconstruction of engine in-cylinder pressure with observers in conventional engines has extensively been studied in the literature. The subject however remains unaddressed for Free-piston Engines (FPEs). An in-cylinder pressure observer suitable for FPEs is developed in this paper.
Tom N. Kigezi, Julian F. Dunne
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Constraint enforcement of piston motion in a free-piston engine

2014 American Control Conference, 2014
Precise control of piston turnaround location is essential for reliable free-piston engine (FPE) operation. In this paper we derive a discrete-time, control-oriented, implicit model that describes FPE clearance height behavior by applying an energy balance to the Otto cycle.
Kevin Zaseck, Matthew Brusstar, Ilya V. Kolmanovsky   +2 more
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A Review of Free Piston Engine Concepts

SAE Technical Paper Series, 1994
<div class="htmlview paragraph">In free piston engines, the stroke of the piston is used directly to produce hydraulic, pneumatic or electric energy. This can be done with a single piston in one combustion chamber, or with more pistons in one or more combustion chambers.
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THE AUTOMOTIVE FREE-PISTON-TURBINE ENGINE

SAE Technical Paper Series, 1957
<div class="section abstract"><div class="htmlview paragraph">THIS paper discusses the free-piston engine which is being investigated by Ford.</div><div class="htmlview paragraph">The analytic method for calculating free-piston-gasifier thermodynamic performance over the complete operating range is discussed for the given ...
Donald N. Frey, Paul Klotsch, Adolph Egli   +2 more
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