Influences of different fuel kinds and engine design parameters on the performance characteristics and NO formation of a spark ignition (SI) engine

Gonca, Güven

doi:10.1016/j.applthermaleng.2017.08.002

Cited by 18 publications

(8 citation statements)

References 77 publications

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“…In this 301 study, only NO is measured. NO emission is formed from the N2 and O2 dissociation at the high combustion temperature [45]. Figure 7 (c) shows that the ISNO increases with advanced spark and DI timings in the light and medium load conditions.…”

Section: Effect Of Early DI Timing On Emissionsmentioning

confidence: 98%

Effects of direct injection timing associated with spark timing on a small spark ignition engine equipped with ethanol dual-injection

Al-Muhsen

Huang

Hong

2019

Fuel

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Dual injection of ethanol fuel (DualEI) has been in development. DualEI has the potential in increasing the compression ratio and thermal efficiency of spark ignition engines by taking the advantages of ethanol fuel properties and the direct injection. This paper reports an experimental investigation of the effect of direct injection (DI) timing associated with spark timing on the performance of a small DualEI engine. Experiments were conducted with fixed port injection timing and varied DI timing before (early) and after (late) the intake valve closed at 3500 RPM and two load conditions. Results show that the engine performance is enhanced by early DI timing, although the variation of IMEP and indicated thermal efficiency with DI timing is not significant either with early DI timing or in most of the tested conditions with late DI timing. Only in the medium load condition when the DI timing is retarded from 80 to 60 CAD bTDC, the IMEP and thermal efficiency significantly reduced by about 16% due to the increased initial combustion duration, resulting in reduced flame speed and increased combustion instability. The results also show different effects of early and late DI timing associated with the spark timing on engine emissions. With late DI timing, the engine emissions of CO and NO increase with the advance of late DI timing and spark timing. With early DI timing, the engine emissions increase with the advance of spark timing. However, the variation of engine emissions with early DI timing is more complicated than that late.

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Section: Effect Of Early DI Timing On Emissionsmentioning

confidence: 98%

Effects of direct injection timing associated with spark timing on a small spark ignition engine equipped with ethanol dual-injection

Al-Muhsen

Huang

Hong

2019

Fuel

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“…Hence, given there are few review articles concerning the effect of coldstart transient, compression ratio, and engine load on NOX emissions in SI engines powered by ethanol/gasoline blends, the present review article aims to fill this gap. It should be highlighted that NOx emissions are classified by the Environmental Protection Agency (EPA) as one of the most harmful pollutants that can damage the respiratory system (Chong et al, 2010;Gonca, 2017). Therefore, NOX emissions from SI engines fuelled with gasoline/ethanol blends could represent a considerable obstacle to further market expansion of bioethanol.…”

Section: Abbreviationsmentioning

confidence: 99%

A review on the effects of ethanol/gasoline fuel blends on NOX emissions in spark-ignition engines

2021

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Ethanol can be used as an alternative fuel for spark-ignition (SI) engines to increase the octane number and oxygen content of ethanol/gasoline blends, thereby reducing dependence on fossil fuels and the exhaust emissions of incomplete combustion products. Although it is widely agreed that ethanol can reduce CO and HC exhaust emissions, the literature on ethanol and NOX emissions is far from conclusive; hence there is a need for an in-depth, updated review of ethanol/gasoline blends in SI engines and the relative production of NOX emissions. In light of that, the present work aims to provide a comprehensive literature review on the current state of ethanol combustion in SI engines to shed definitive light on the potential changes in NOX emissions under various operating conditions. The first part of this paper discusses the feasibility of ethanol as an alternative transportation fuel, including world production and ethanol production processes. The physicochemical properties of ethanol and gasoline are then compared to analyze their effects on combustion efficiency and exhaust emissions. Then, the pathways of NOX formation inside the cylinder of SI engines are discussed in depth. Finally, we review and critically discuss the effects of ethanol concentration in blends and different engine parameters on NOX formation.

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“…NOx emissions increased with increasing engine speed due to increased temperature and pressure inside the combustion chamber. Therefore, NOx emissions are directly related to the temperature of the combustion chamber [16,23,24].…”

Section: Engine Exhaust Emissionsmentioning

confidence: 99%

Experimental Study of the Effect of a Non-Oxygenated Additive on Spark-Ignition Engine Performance and Pollutant Emissions

Davari

Ommi

Saboohi

et al. 2021

IJE

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In this study, effects of adding butene, homopolymer to gasoline on the performance of a four-stroke spark ignition (SI) engine and pollutant emissions have been investigated. This additive increases the octane number of gasoline. In this research, the additive was combined with a non-leaded gasoline. Also, in addition to fuel changes and the use of additives, engine spark plugs were replaced and three types of spark plugs were used for this study. These include single electrode spark plug, dual electrode spark plug and Platinum+4 spark plug. The results of experimental tests showed that with the addition of additive to gasoline, the brake torque and braking power were increased with the use of each of the three spark plug type. The results revealed that by combining gasoline and additive, carbon dioxide and nitrogen oxides emissions were increased. On the other hand, unburned hydrocarbons and carbon monoxide emissions from the engine were reduced. In addition, it was concluded that changing the spark plugs had slight effect on engine performance and pollutant emissions, and that the results of experimental tests using all three types of spark plugs were almost identical.

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Influences of different fuel kinds and engine design parameters on the performance characteristics and NO formation of a spark ignition (SI) engine

Cited by 18 publications

References 77 publications

Effects of direct injection timing associated with spark timing on a small spark ignition engine equipped with ethanol dual-injection

Effects of direct injection timing associated with spark timing on a small spark ignition engine equipped with ethanol dual-injection

A review on the effects of ethanol/gasoline fuel blends on NOX emissions in spark-ignition engines

Experimental Study of the Effect of a Non-Oxygenated Additive on Spark-Ignition Engine Performance and Pollutant Emissions

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