Effect of CO_2 Dilution on the Combustion Characteristics of a Spark-Ignition Engine Fuelled with Individual Component of Bio-Gas(Thermal Engineering)

Abstract

This paper presents further results of the study on basic combustiQn characteristics of gaseous fuels simulated for a bio − gas produced through a biomass gasi 丘cation process with a catalyzer ． CO2 dilution effect was examined for the individual fuel component of CH4 ， CO and II2 in a single − cylinder spark − igni ' tion engine under thb condition of WOT ， MBT and a constant speed of 1500 rpm ． For these three kinds of fuels， until a cert 乱 in level of CO2 dilution ， the thermal eMciency does not vary ，

Combustion characteristics of an SI engine fueled with H2–CO blended fuel and diluted by CO2

“…As shown in the previous study on the combustion characteristics of individual gas component [4], H 2 has higher limit of f due to the occurrence of backfire. Thus, in the present study of supplying two fuel gases, CO is taken to be the base gas, and the effect of substituting the part of CO for H 2 is examined at a constant f, which can be expressed by H.S.R.…”

“…The main components of the produced gas are: H 2 35e50%, CO 6e15%, CH 4 2e8%, CO 2 19e25%, N 2 15e29% and some other impurity. Results of each i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 3 7 ( 2 0 1 2 ) 1 4 6 3 2 e1 4 6 3 9 component fuel combustion and dilution effect in a sparkignition engine were reported in previous papers [3,4]. This paper focuses on effects of H 2 substitution and CO 2 dilution on H 2 eCO blended fuel combustion.…”

“…However, it usually includes hydrogen (H 2 ), carbon monoxide (CO), CH 4 , carbon dioxide (CO 2 ), nitrogen (N 2 ), and some other hydrocarbons. Fig.…”

“…In order to examine the fundamental combustion behavior, the study is divided into three stages, combustion characteristics of individual fuel component [3], effect of diluent component [4], and combustion of fuel mixtures. In the present study, combustion characteristics of mixed gas components are examined.…”