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Free-piston engine

A free-piston engine is a linear, 'crankless' internal combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion chamber gases, a rebound device (e.g., a piston in a closed cylinder) and a load device (e.g. a gas compressor or a linear alternator).

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First generation

Modern applications

Features

Recent developments

Sources

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Map overview Semantic statistics

Free-piston engine

Nodes40
Edges39
Triples60
Avg. degree1.95
Density0.05
Components1

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Free-piston engine

Top relations

related to Advantages · 7
Free-piston engine → HCCI, High, NOx, Potential, Simple, TDC, The
related to First generation · 6
Free-piston engine → Bureau, Bureau Technique Pescara, Pescara, Robert Huber, The, These
related to Sources · 6
Free-piston engine → Applied Thermal Engineering, Issues, Mikalsen, Pages, Roskilly, Volume
related to Air compressors · 5
Free-piston engine → Free-piston, German Navy, In, Some, The
related to Challenges · 4
Free-piston engine → Crankshaft, Issues, Rotational, The
related to Features · 4
Free-piston engine → As, The, These, This
related to Gas generators · 4
Free-piston engine → After, In, Such, The
related to Recent developments · 4
Free-piston engine → German, In, Newcastle University, UK
is a · 1
Free-piston engine → linear
has application · 1
Free-piston engine → Modern

Important terminology Word statistics

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Important terminology

engine free-piston piston engines air linear power gas combustion control device load compressor crankshaft motion cylinder single use compression generators

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Free-piston engineis alinear0.90text
an air compressor for pneumatic powerinstance ofthrough driving a linear load0.80text
or by incorporating a linear alternator directly into the pistons to produce electrical power.The basic configuration of free-piston engines is commonly known as single pistoninstance ofthrough driving a linear load0.80text
dual piston or opposed pistonsinstance ofthrough driving a linear load0.80text
referring to the number of combustion cylindersinstance ofthrough driving a linear load0.80text
stationaryinstance ofand such units were in widespread use in large-scale applications0.80text
marine powerplantsinstance ofand such units were in widespread use in large-scale applications0.80text
PPMinstance ofThese are enhanced by variable fuel injection timing and valve timing through proper control methods.Variable stroke length is achieved by a proper frequency control scheme0.80text
nitrogen oxidesinstance ofand a fast power stroke expansion enhances fuel-air mixing and reduces the time available for heat transfer losses and the formation of temperature-dependent emissions0.80text
the influence of cycle-to-cycle variations in the combustion processinstance ofIssues0.80text
engine performance during transient operation in dual piston engines are topics that need further investigationinstance ofIssues0.80text
alternatorinstance ofCrankshaft engines can connect traditional accessories0.80text

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