free-piston engine

free-piston engine

[′frē ‚pis·tən ′en·jən]
(mechanical engineering)
A prime mover utilizing free-piston motion controlled by gas pressure in the cylinders.
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References in periodicals archive ?
and Roskilly, A., "The Control of a Free-Piston Engine Generator.
The free-piston engine concept as designed by DLR converts chemically stored energy in liquid or gaseous fuels into electric energy by means of an internal combustion process.
A comprehensive review of recent work of FPE can be found in Mikalsen and Roskilly's "A review of free-piston engine history and applications," published in Applied Thermal Engineering (2).
An example of this is Sturman Industries' ADAPT system, which combines electronic fuel delivery, VVA air control, air-injection emission control, and a digital-hydraulic approach to a free-piston engine. Using available technology, the ADAPT system allows for repeatable combustion control, which optimizes energy efficiency for different fuels.
The Linear Internal Combustion Engine (LICE), which is also called the Free-Piston Engine, was developed gradually from the 1920s.
and Roskilly, A., "Performance Simulation of a Spark Ignited Free-Piston Engine Generator," App!ied Therma!
The free-piston engine compressor has progressed through three distinct prototypes as shown in Fig.
The free-piston engine allows for variable compression, flexible combustion modes, and the use of different fuels, according to Haugen.
One promising alternative is a free-piston engine, incorporating a linear alternator and using an unconventional combustion approach known as homogeneous charge compression ignition, or HCCI, in which fuel and air are premixed and compressed until the heat of compression makes them react.
CPG's baseline engine for this system is the free-piston engine from Clever Fellow's Innovative Consortium of Troy, N.Y.
In another key feature, the output of the free-piston engine can be changed almost instantaneously.