*The effects of Spark Timing, Unburned Gas Temperature, and Negative Valve Overlap on the Rates of Stoichiometric Spark Assisted Compression Ignition Combustion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F13%3A00227702" target="_blank" >RIV/68407700:21220/13:00227702 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apenergy.2013.01.038" target="_blank" >http://dx.doi.org/10.1016/j.apenergy.2013.01.038</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apenergy.2013.01.038" target="_blank" >10.1016/j.apenergy.2013.01.038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

*The effects of Spark Timing, Unburned Gas Temperature, and Negative Valve Overlap on the Rates of Stoichiometric Spark Assisted Compression Ignition Combustion

Popis výsledku v původním jazyce

*Spark assisted compression ignition (SACI) combustion is a potential means of extending the high load limit of homogeneous charge compression ignition (HCCI) while maintaining high thermal efficiency. In these experiments, an HCCI engine equipped with fully-flexible valve actuation was used to explore the effect of spark assist in controlling peak heat release rates. Fueling rate was held constant at 19mg/cycle with a net indicated mean effective pressure (IMEPn) of ~6.5bar. The fraction of flame heatrelease was varied from 18% to 34% by controlling spark timing and unburned gas temperature (Tu) via changes in internal and external exhaust gas recirculation (EGR). Internal EGR was adjusted by varying the duration of negative valve overlap (NVO). Thisstrategy also allowed mixture composition and equivalence ratio (?=1.0) to be maintained. It was found that combustion phasing (CA50) could be held constant while reducing peak heat release rates by ~40% and ringing intensity by ~75% wit

Název v anglickém jazyce

*The effects of Spark Timing, Unburned Gas Temperature, and Negative Valve Overlap on the Rates of Stoichiometric Spark Assisted Compression Ignition Combustion

Popis výsledku anglicky

*Spark assisted compression ignition (SACI) combustion is a potential means of extending the high load limit of homogeneous charge compression ignition (HCCI) while maintaining high thermal efficiency. In these experiments, an HCCI engine equipped with fully-flexible valve actuation was used to explore the effect of spark assist in controlling peak heat release rates. Fueling rate was held constant at 19mg/cycle with a net indicated mean effective pressure (IMEPn) of ~6.5bar. The fraction of flame heatrelease was varied from 18% to 34% by controlling spark timing and unburned gas temperature (Tu) via changes in internal and external exhaust gas recirculation (EGR). Internal EGR was adjusted by varying the duration of negative valve overlap (NVO). Thisstrategy also allowed mixture composition and equivalence ratio (?=1.0) to be maintained. It was found that combustion phasing (CA50) could be held constant while reducing peak heat release rates by ~40% and ringing intensity by ~75% wit

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

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 periodika

Applied Energy

ISSN

0306-2619

e-ISSN

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Svazek periodika

105

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

407-417

Kód UT WoS článku

000316831800041

EID výsledku v databázi Scopus

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