Results 191 to 200 of about 1,453 (244)
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A review of free-piston linear engines
Applied Energy, 2016Abstract 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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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 +2 more
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FORD FREE-PISTON ENGINE DEVELOPMENT
SAE Technical Paper Series, 1959<div class="section abstract"><div class="htmlview paragraph">THE Free-Piston Engine Program described in this paper was concerned with determining thermodynamic relationships of small, high-speed engines. The purpose was to establish proper engine geometry and mechanical design which could then be applied to developing larger automotive ...
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Tribological characteristics of piston rings in a single-piston hydraulic free-piston engine
Industrial Lubrication and Tribology, 2017Purpose A free-piston engine (FPE) is an unconventional engine that abandons the crank system. This paper aims to focus on a numerical simulation for the lubricating characteristics of piston rings in a single-piston hydraulic free-piston engine (HFPE).
Zhaoju Qin +3 more
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Friction characteristics of piston rings in a free-piston engine generator
International Journal of Engine Research, 2016Free-piston engine generator is a new alternative to traditional reciprocating engine, which moves without mechanical restriction of crankshaft system. This article investigated numerically the friction characteristics of piston rings in a free-piston diesel engine generator by adopting coupled models of dynamic and friction.
Chenheng Yuan +3 more
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Dynamic Analysis of the Single Piston Hydraulic Free Piston Engine
Applied Mechanics and Materials, 2011The connection of the engine body and the base was simplified as a spring and a damper to analyze the body vibration of the single piston hydraulic free piston engine. It was demonstrated that the increasing of the connection spring rate can reduce the amplitude of the body vibration.
Hao Ling Ren, Hai Bo Xie, Hua Yong Yang
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Large Free-Piston Stirling Engines
1985The word ‘large’ applied to Stirling engines means different things to different people. An engine having a 3 kW output would be large to those working on artificial hearts or cryocoolers for electronic applications. It would be small, negligibly so, to those interested in locomotive propulsion.
Graham Walker, J. R. Senft
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Stability, Control, and Constraint Enforcement of Piston Motion in a Hydraulic Free-Piston Engine
IEEE Transactions on Control Systems Technology, 2017A free-piston engine (FPE) requires stabilizing feedback control to manage piston motion and ensure safe operation. A high-fidelity model, which simulates the FPE behavior by combining dynamic, thermodynamic, and hydraulic submodels, is exploited as an engine surrogate for control development.
Kevin Zaseck +2 more
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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. +3 more
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