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Statements

Subject Item
n2:RIV%2F68407700%3A21220%2F13%3A00213666%21RIV14-MSM-21220___
rdf:type
n5:Vysledek skos:Concept
dcterms:description
*In spark-ignition engines, fluctuations of the in-cylinder pressure trace and the apparent rate of heat release are usually observed from one cycle to another. These C ycle-to- C ycle V ariations (CCV) are affected by the early flame development and the subsequent flame front propagation. The CCV are responsible for engine performance (e.g. fuel consumption) and the knock behavior. The occurrence of the phenomena is unpredictable and the stochastic nature offers challenges in the optimization of engine control strategies. In the present work, CCV are analyzed in terms of their impact on the engine knock behavior and the related efficiency. Target is to estimate the possible fuel consumption savings in steady-state operation and in the drivecycle, when CCV are reduced. Since CCV are immanent on real engines, such a study can only be done by means of simulation. For the analysis different tools are applied, from 1-D gas dynamic models with detailed combustion modeling to real-time capable engine and vehicle system simulation. *In spark-ignition engines, fluctuations of the in-cylinder pressure trace and the apparent rate of heat release are usually observed from one cycle to another. These C ycle-to- C ycle V ariations (CCV) are affected by the early flame development and the subsequent flame front propagation. The CCV are responsible for engine performance (e.g. fuel consumption) and the knock behavior. The occurrence of the phenomena is unpredictable and the stochastic nature offers challenges in the optimization of engine control strategies. In the present work, CCV are analyzed in terms of their impact on the engine knock behavior and the related efficiency. Target is to estimate the possible fuel consumption savings in steady-state operation and in the drivecycle, when CCV are reduced. Since CCV are immanent on real engines, such a study can only be done by means of simulation. For the analysis different tools are applied, from 1-D gas dynamic models with detailed combustion modeling to real-time capable engine and vehicle system simulation.
dcterms:title
*A Computational Study on the Impact of Cycle-to-Cycle Combustion Fluctuations on Fuel Consumption and Knock in Steady-State and Drivecycle Operation *A Computational Study on the Impact of Cycle-to-Cycle Combustion Fluctuations on Fuel Consumption and Knock in Steady-State and Drivecycle Operation
skos:prefLabel
*A Computational Study on the Impact of Cycle-to-Cycle Combustion Fluctuations on Fuel Consumption and Knock in Steady-State and Drivecycle Operation *A Computational Study on the Impact of Cycle-to-Cycle Combustion Fluctuations on Fuel Consumption and Knock in Steady-State and Drivecycle Operation
skos:notation
RIV/68407700:21220/13:00213666!RIV14-MSM-21220___
n5:predkladatel
n17:orjk%3A21220
n3:aktivita
n18:P n18:I
n3:aktivity
I, P(7E10050)
n3:cisloPeriodika
2013
n3:dodaniDat
n13:2014
n3:domaciTvurceVysledku
n16:6360483
n3:druhVysledku
n19:J
n3:duvernostUdaju
n12:C
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
58535
n3:idVysledku
RIV/68407700:21220/13:00213666
n3:jazykVysledku
n6:eng
n3:klicovaSlova
Cycle-to-cycle variations; system simulation; vehicle drivecycle; modeling; SI engine
n3:klicoveSlovo
n7:system%20simulation n7:vehicle%20drivecycle n7:modeling n7:Cycle-to-cycle%20variations n7:SI%20engine
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[C3FE207BDE71]
n3:nazevZdroje
Society of Automotive Engineers Technical Paper Series
n3:obor
n9:BJ
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
5
n3:projekt
n20:7E10050
n3:rokUplatneniVysledku
n13:2013
n3:svazekPeriodika
2013
n3:tvurceVysledku
Schuemie, H. Vítek, Oldřich Tatschl, R. Poetsch, Ch. Ofner, H.
s:issn
0148-7191
s:numberOfPages
10
n10:doi
10.4271/2013-24-0030
n15:organizacniJednotka
21220