A computational study on the impact of cycle-to-cycle combustion fluctuations on fuel consumption and knock in steady-state and drivecycle operation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F13%3A00229510" target="_blank" >RIV/68407700:21220/13:00229510 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.scopus.com/record/display.url?eid=2-s2.0-84890338029&origin=inward&txGid=6ADAE22518675D1BCC2C01A9A14CD40F.aqHV0EoE4xlIF3hgVWgA%3a12" target="_blank" >http://www.scopus.com/record/display.url?eid=2-s2.0-84890338029&origin=inward&txGid=6ADAE22518675D1BCC2C01A9A14CD40F.aqHV0EoE4xlIF3hgVWgA%3a12</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4271/2013-24-0030" target="_blank" >10.4271/2013-24-0030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A computational study on the impact of cycle-to-cycle combustion fluctuations on fuel consumption and knock in steady-state and drivecycle operation

Popis výsledku v původním jazyce

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 Cycle-to-Cycle Variations (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.

Název v anglickém jazyce

A computational study on the impact of cycle-to-cycle combustion fluctuations on fuel consumption and knock in steady-state and drivecycle operation

Popis výsledku anglicky

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 Cycle-to-Cycle Variations (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.

Druh

D - Stať ve sborníku

CEP obor

JT - Pohon, motory a paliva

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0125" target="_blank" >ED2.1.00/03.0125: Pořízení technologie pro Centrum vozidel udržitelné mobility</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

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.

Název statě ve sborníku

SAE Technical Papers

ISBN

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ISSN

0148-7191

e-ISSN

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Počet stran výsledku

16

Strana od-do

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Název nakladatele

SAE International

Místo vydání

Warrendale, PA

Místo konání akce

Napoli

Datum konání akce

20. 9. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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