2002
DOI: 10.1007/bf03185173
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Effects of gas composition on the performance and emissions of compressed natural gas engines

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Cited by 31 publications
(15 citation statements)
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“…In a study involving eight different kinds of natural gases, a research group revealed that the air to fuel ratio changes with different fuel composition, and the change in ratio was proportional to the Wobbe Index (WI) [6]. A similar result was obtained by another group that observed a power variation of up to 20% and a change in emission characteristics with diverse fuel composition [7]. Kubesh et al (1992) emphasized that a change in octane number resulting from a change in fuel composition had a critical influence on vehicle driving conditions near knock-limited power, and they developed a correlation between the octane number and gas composition [2].…”
Section: Introductionmentioning
confidence: 75%
See 1 more Smart Citation
“…In a study involving eight different kinds of natural gases, a research group revealed that the air to fuel ratio changes with different fuel composition, and the change in ratio was proportional to the Wobbe Index (WI) [6]. A similar result was obtained by another group that observed a power variation of up to 20% and a change in emission characteristics with diverse fuel composition [7]. Kubesh et al (1992) emphasized that a change in octane number resulting from a change in fuel composition had a critical influence on vehicle driving conditions near knock-limited power, and they developed a correlation between the octane number and gas composition [2].…”
Section: Introductionmentioning
confidence: 75%
“…According to a study by Min et al (2002), the Maximum Brake Torque (MBT) increases with decreasing CP that has an effect on the spark timing of an engine. The spark timing of the engine for a gas with a small CP needs to be set early, so that the initial flame has sufficient time to fully develop.…”
Section: Characteristics Of Fuel Consumptionmentioning
confidence: 99%
“…For internal combustion engines (ICE) fired by gaseous fuels not only hydrogen is used but also compressed natural gas (CNG) with its main component methane. A literature survey showed that most of the CNG available in industry is a mixture of the three main components methane (CH 4 ), ethane (C 2 H 6 ) and nitrogen (N 2 ) [52,53,54]. Concluding the CNGcompositions available in publications a generic composition was defined, see Tab.…”
Section: Test Case Description and Meshingmentioning
confidence: 99%
“…This variation affects on the operation of the NG fueled engines. Many researchers, focused on this phenomena [13][14][15][16][17][18][19][20][21][22][23]. One of the major concerns with varying NG composition in HCCI engines is Start of Combustion (SOC).…”
Section: Introductionmentioning
confidence: 99%
“…It is a measure of energy flow rate through an orifice [38] and defines the chemical energy that will flow through an orifice with a given pressure drop. It is calculated by dividing the volume heating value of the fuel by the square root of specific gravity: (20) To describe natural gas characteristics based on its energy content, WN is used. WN increases when the content of the non-methane hydrocarbon increases.…”
mentioning
confidence: 99%