Results 221 to 230 of about 2,661 (278)

Corrosion behavior of Fe amorphous/Al-12Si piston composites with core-shell structure. [PDF]

Sci Rep
Wang Y, Lin Z, Liu C, Zhao D, Li C, Wang Y.   +5 more
europepmc   +1 more source

Performance investigation of an active free-piston Stirling engine using artificial neural network and firefly optimization algorithm. [PDF]

Heliyon
Masoumi AP, Tavakolpour-Saleh AR, Bagherian V.   +2 more
europepmc   +1 more source

Investigation of the Structural, Mechanical and Operational Properties of an Alloy AlSi18Cu3CrMn. [PDF]

Materials (Basel)
Dimova D, Dochev B, Trojan K, Kamarska K, Sofronov Y, Zagorski M, Tsonev V, Nikolov A.   +7 more
europepmc   +1 more source

Tribological characteristics of piston rings in a single-piston hydraulic free-piston engine

Industrial Lubrication and Tribology, 2017
Purpose 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, Chenheng Yuan, Yanpeng Yuan, Yuanyuan Huang   +3 more
openaire   +2 more sources

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Precise piston trajectory control for a free piston engine

Control Engineering Practice, 2015
Abstract A free piston engine removes the mechanical constraint on the piston motion by eliminating the crankshaft. The extra degree of freedom offers many advantages for reducing fuel consumption and emissions. Nevertheless, stability and robustness of the engine operation has been affected in the meantime.
Ke Li, Chen Zhang, Zongxuan Sun
exaly   +2 more sources

Predictive piston motion control in a free-piston internal combustion engine

Applied Energy, 2010
A piston motion controller for a free-piston internal combustion engine is presented. To improve dynamic performance in the control of the piston motion and engine compression ratio, the controller response is determined from a prediction of engine top dead centre error rather than the measured value from the previous cycle.
A P Roskilly
exaly   +3 more sources

Dynamic Analysis of the Single Piston Hydraulic Free Piston Engine

Applied Mechanics and Materials, 2011
The 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
openaire   +2 more sources

A review of free-piston engine history and applications

Applied Thermal Engineering, 2007
This document reviews the history of free-piston internal combustion engines, from the air compressors and gas generators used in the mid-20th century through to recent free-piston hydraulic engines and linear electric generators.
R Mikalsen, A P Roskilly
exaly   +1 more source

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
openaire   +1 more source

Performance simulation of a spark ignited free-piston engine generator

Applied Thermal Engineering, 2008
Free-piston engines are under investigation by a number of research groups worldwide due to potential fuel efficiency and engine emissions advantages. The free-piston engine generator, in which a linear electric generator is fixed to the mover to produce
R Mikalsen, A P Roskilly
exaly   +1 more source