Results 191 to 200 of about 1,435 (236)

Dynamic Behaviour Prediction Of Free-piston Stirling Engines

Proceedings of the 25th Intersociety Energy Conversion Engineering Conference, 2005
The paper presents an integrated methodology for both the design optimization and the performance evaluation of free-piston Stirling engines (FPSE) suitable for space applications. In particular, the prediction of the dynamic behaviour is the problem here considered in more detail.
BENVENUTO G, DE MONTE, FILIPPO, FARINA F.   +2 more
openaire   +2 more sources

Control-based design of free-piston stirling engines

2008 American Control Conference, 2008
A control-based analysis and characterization of a free-piston Stirling engine is presented, and proposed as a lightweight power supply for untethered robots. Typically, such devices are designed from the point of view of a thermodynamic cycle in terms of traditional thermodynamic equations of state.
Jose A. Riofrio, Khalid Al-Dakkan, Mark E. Hofacker, Eric J. Barth   +3 more
openaire   +1 more source

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 ...
openaire   +1 more source

Large Free-Piston Stirling Engines

1985
The 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
openaire   +1 more source

Modeling and predictive control of Free Piston Engine Generator

2015 American Control Conference (ACC), 2015
This paper focuses on the modeling and control of a Free Piston Engine Generator (FPEG) which is an alternative to conventional internal combustion engines to be used as an auxiliary power unit (APU) in hybrid electric vehicles (HEV). A physics-based, continuous-time model and a discrete-time, control-oriented model are derived.
Xun Gong 0007, Kevin Zaseck, Ilya V. Kolmanovsky, Hong Chen 0003   +3 more
openaire   +1 more source

The control of an opposed hydraulic free piston engine

Applied Energy, 2014
Abstract An opposed hydraulic free piston engine is under design at the Tianjin University in China because of the advantages of this engine compared to the conventional engine. The main challenges presented by such engines are the control of the piston motion and synchronization.
Xudong Zhen
exaly   +2 more sources

Free Piston Engine Its Application and Optimization

SAE Technical Paper Series, 2000
<div class="htmlview paragraph">A free piston internal combustion engine coupled with a linear generator is proposed for hybrid vehicle application. The engine works on CI two-stroke cycle with direct fuel injection. Uniflow was chosen for an efficient scavenge process.
Martin Goertz, Lixin Peng
openaire   +1 more source

Stability analysis of free piston Stirling engines

The European Physical Journal Applied Physics, 2013
This paper presents a stability analysis of a free piston Stirling engine. The model and the detailed calculation of pressures losses are exposed. Stability of the machine is studied by the observation of the eigenvalues of the model matrix. Model validation based on the comparison with NASA experimental results is described.
Bégot, Sylvie, Layes, Guillaume, Lanzetta, François, Nika, Philippe   +3 more
openaire   +1 more source

Motion characteristic of a free piston linear engine

Applied Energy, 2010
A mathematical model of a free piston linear engine is established. The motion characteristics as well as the natural frequency map of the free piston are established. Then, its motion characteristics are successfully explained from the oscillation point.
Jin Xiao, Qingfeng Li, Zhen Huang
exaly   +2 more sources

Stability analysis of hydraulic free piston engine

Applied Energy, 2015
Abstract Based on the piston force analysis of the hydraulic free piston diesel engine, a nonlinear vibration model is established. Then the solution of the nonlinear vibration model is given by the generalized harmonic KBM method. The reasons that affect the constant amplitude of the nonlinear vibration model are analyzed according to the expression
Shuanlu Zhang, Changlu Zhao, Zhenfeng Zhao   +2 more
openaire   +1 more source