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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
*The effects of Spark Timing, Unburned Gas Temperature, and Negative Valve Overlap on the Rates of Stoichiometric Spark Assisted Compression Ignition Combustion
Original language description
*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
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
JT - Propulsion, engines and fuels
OECD FORD branch
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Project
<a href="/en/project/ED2.1.00%2F03.0125" target="_blank" >ED2.1.00/03.0125: Acquisition of Technology for Vehicle Center of Sustainable Mobility</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

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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