Capturing multifractality of pressure fluctuations in thermoacoustic systems using fractional-order derivatives.
Sign Up to like & getrecommendations! Published in 2021 at "Chaos"
DOI: 10.1063/5.0032585
Abstract: The stable operation of a turbulent combustor is not completely silent; instead, there is a background of small amplitude aperiodic acoustic fluctuations known as combustion noise. Pressure fluctuations during this state of combustion noise are… read more here.
Keywords: multifractality pressure; combustion noise; fractional order; pressure fluctuations ... See more keywords
Noise-canceling spike between pilot and main-pressure-rise peaks of multiple-injection diesel combustion
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Engine Research"
DOI: 10.1177/1468087419848236
Abstract: A previous study addressed combustion-noise reduction by optimizing the interval between two peaks in the pressure-rise rate (dP/dθ) of premixed charge combustion ignition with the split injection of fuel in diesel engines. Noise canceling occurs… read more here.
Keywords: combustion noise; canceling spike; noise canceling; noise ... See more keywords
Effects of Flame Behaviors on Combustion Noise from Lean-Premixed Hydrogen Low-Swirl Flames
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DOI: 10.2514/1.j059049
Abstract: This experimental study explored the influence of global/local flame behaviors on direct combustion noise produced by a lean-premixed gaseous H2/air low-swirl turbulent jet flame, with a focus on t... read more here.
Keywords: lean premixed; effects flame; combustion noise; flame behaviors ... See more keywords
Mechanism of Combustion Noise Influenced by Pilot Injection in PPCI Diesel Engines
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DOI: 10.3390/app9091875
Abstract: Pilot injection combined with exhaust gas recirculation (EGR) is usually utilized to realize the partially premixed compression ignition (PPCI) mode in diesel engines, which enables the simultaneous decrease of nitrogen oxide and soot emissions to… read more here.
Keywords: pilot injection; injection; combustion noise; combustion ... See more keywords
Combustion Noise Reduction with High Thermal Efficiency by the Control of Multiple Fuel Injections in Premixed Diesel Engines
Sign Up to like & getrecommendations! Published in 2017 at "SAE International journal of engines"
DOI: 10.4271/2017-01-0706
Abstract: Premixed diesel combustion is effective for high thermal efficiency and reductions of NOx and PM emissions, but a reduction of combustion noise is necessary for medium-high load engine operation. The control of the fuel injection… read more here.
Keywords: noise reduction; fuel; combustion; combustion noise ... See more keywords