TY - JOUR
T1 - Analysis of Effect of Water on NO Formation in DI Diesel Engines.
AU - Ishida, Masahiro
AU - Chen, Zhi Li
PY - 1995
Y1 - 1995
N2 - The effect of water on NO formation was analyzed theoretically from the point of view of changes in the entrained air rate and specific heat of the burned gas in the combustion chamber. The specific heat was calculated accurately based on the chemical equilibrium composition analysis considering the absolute humidity of the inducted air, the amount of water in the emulsified fuel and the residual gas fraction. It is clarified by the two-zone combustion model analysis that about 20% reduction in NOx is attained by an increase of only 0.01 kg/kg in the absolute humidity, and the NOx reduction due to the water-emulsified fuel is caused by increases in both gas weight and specific heat of the burned gas whereas the entrained air rate is hardly affected by the water in the emulsified fuel.
AB - The effect of water on NO formation was analyzed theoretically from the point of view of changes in the entrained air rate and specific heat of the burned gas in the combustion chamber. The specific heat was calculated accurately based on the chemical equilibrium composition analysis considering the absolute humidity of the inducted air, the amount of water in the emulsified fuel and the residual gas fraction. It is clarified by the two-zone combustion model analysis that about 20% reduction in NOx is attained by an increase of only 0.01 kg/kg in the absolute humidity, and the NOx reduction due to the water-emulsified fuel is caused by increases in both gas weight and specific heat of the burned gas whereas the entrained air rate is hardly affected by the water in the emulsified fuel.
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U2 - 10.1299/kikaib.61.3541
DO - 10.1299/kikaib.61.3541
M3 - Article
AN - SCOPUS:0029389620
SN - 0387-5016
VL - 61
SP - 3541
EP - 3547
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
IS - 590
ER -