*A Computational Study on the Impact of Cycle-to-Cycle Combustion Fluctuations on Fuel Consumption and Knock in Steady-State and Drivecycle Operation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F13%3A00213666" target="_blank" >RIV/68407700:21220/13:00213666 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4271/2013-24-0030" target="_blank" >http://dx.doi.org/10.4271/2013-24-0030</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4271/2013-24-0030" target="_blank" >10.4271/2013-24-0030</a>

Result language
angličtina
Original language name
*A Computational Study on the Impact of Cycle-to-Cycle Combustion Fluctuations on Fuel Consumption and Knock in Steady-State and Drivecycle Operation
Original language 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 thesubsequent 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 enginecontrol 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, whenCCV 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 capab
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BJ - Thermodynamics
OECD FORD branch
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Project
<a href="/en/project/7E10050" target="_blank" >7E10050: Large Eddy and System Simulation to predict Cyclic Combustion Variability in gasoline engines</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
C - Předmět řešení projektu podléhá obchodnímu tajemství (§ 504 Občanského zákoníku), ale název projektu, cíle projektu a u ukončeného nebo zastaveného projektu zhodnocení výsledku řešení projektu (údaje P03, P04, P15, P19, P29, PN8) dodané do CEP, jsou upraveny tak, aby byly zveřejnitelné.

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