The effect of equivalence ratio on particle components of dielectric barrier discharge of CH/air mixture were carried out by employing a coaxial cylindrical electrode. The result shows that molar fraction of active pa...
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The effect of equivalence ratio on particle components of dielectric barrier discharge of CH/air mixture were carried out by employing a coaxial cylindrical electrode. The result shows that molar fraction of active particles such as H, O, CH and NO decrease slightly with the equivalence ratio, however, enough active particles could be obtained even at the smallest equivalence ratio conditions;no obvious change in the electron density with the equivalence ratio has been obtained, which has a very beneficial effect on the methane-air combustion reaction under the conditions of low equivalence ratio.
An experimental research of the effect of H2 substitution and CO2 dilution on CH4 combustion has been carried out on a spark ignition engine. The results show that H2 addition could improve BMEP, thermal efficiency, C...
An experimental research of the effect of H2 substitution and CO2 dilution on CH4 combustion has been carried out on a spark ignition engine. The results show that H2 addition could improve BMEP, thermal efficiency, CO and THC emissions. NOX emissions increased for higher low heating value (LHV) of H2 than CH4. CO2 dilution could effective reduce NOX emission of H2-CH4 combustion. Although engine performance, thermal efficiency and exhaust get unacceptable under high fuel dilution ratio (F.D.R.) conditions, it could be solved by decreasing F.D.R. and/or increasing hydrogen substitution ratio (H.S.R.).
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