Exploring the potential of ethanol, CNG, and syngas as fuels for lean spark-ignition combustion - An experimental study

Ran, Zhongnan; Hariharan, Deivanayagam; Lawler, Benjamin; Mamalis, Sotirios

doi:10.1016/j.energy.2019.116520

Cited by 34 publications

(8 citation statements)

References 18 publications

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“…On the other hand, LPG operation shows a significant rise in CO emissions due to lower volumetric efficiency. Also, the burning of syngas air mixture improves combustion efficiency and increases cylinder temperature, attributed to lower CO emissions 45 …”

Section: Resultsmentioning

confidence: 99%

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Experimental based comparative exergy analysis of a spark‐ignition Honda GX270 Genset engine fueled with LPG and syngas

Ganesan

Sahoo

Porpatham

et al. 2022

Energy Science & Engineering

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The present study investigates three different fuels such as gasoline, liquefied petroleum gas (LPG), and syngas in spark-ignition Honda GX270 Genset engine under wide-open throttle position on its performance, combustion characteristic as well as availability analysis. The results showed that when the engine operated with gasoline fuel, the brake thermal efficiency was higher than that of LPG and syngas by 6.2% and 7.4%, respectively, throughout the engine load condition. Brake-specific fuel consumption of the engine with syngas (660 g/kW h) and LPG fuel (812 g/kW h) was higher than that of the gasoline fuel (510 g/kW h) at the 4.5 kW of engine load. The engine emission results showed syngas operation caused a significant reduction in NOx by 58.4%, CO by 16.5%, HC by 23.2% compared to gasoline fuel at peak load conditions. On the other hand, exergy analysis concludes the exergy efficiency for all the test fuels increases with an increase in engine load due to a high rise in shaft output. At a 4.5 kW power output, the exergy efficiency of the engine was improved to 46.45% from 45.62% and 29.73% with syngas, gasoline, and

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Section: Resultsmentioning

confidence: 99%

“…Also, the burning of syngas air mixture improves combustion efficiency and increases cylinder temperature, attributed to lower CO emissions. 45…”

Section: Co Emissionmentioning

confidence: 99%

Experimental based comparative exergy analysis of a spark‐ignition Honda GX270 Genset engine fueled with LPG and syngas

Ganesan

Sahoo

Porpatham

et al. 2022

Energy Science & Engineering

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“…In addition to the conventional petrol and diesel fuels, reciprocating internal combustion engines can run on gaseous fuels as an alternative [24]. Natural gas is one of the natural fossil fuels.…”

Section: Cng As An Alternative Fuelmentioning

confidence: 99%

The Environmental Safety of the Fiat 0.9 TwinAir Compressed Natural Gas Engine

Warianek

Lejda

2020

The Archives of Automotive Engineering – Archiwum Motoryzacji

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The article presents the results of measurements of concentrations of selected exhaust components of the Fiat 0.9 TwinAir spark-ignition engine operating according to load characteristics. The tested engine has an indirect, multi-point petrol supply system and has been retrofitted with an indirect CNG injection system. The results of the tests are a comparison of selected economic, ecological and energetic indicators of engine operation obtained when fuelled with CNG and 95 octane petrol. The operation of the engine fuelled with gaseous fuel was preceded by autocalibration of the controller of the fuelling system. The article presents the results of tests of concentrations of harmful components of exhaust gases: carbon dioxide CO2, carbon monoxide CO, nitrogen oxides NOx and HC hydrocarbons. Moreover, the values of lambda λ air excess coefficient are presented and fuel consumption is compared. The obtained results of the tests of the engine fuelled with CNG gas show a significant decrease in the value of the obtained torque in comparison to the engine torque when fuelled with petrol. The engine fuelled with compressed natural gas contributed to the improvement of its ecological properties and a reduction of fuel consumption, which are important factors of ecological and energy safety. Exhaust gas analysis showed a reduction in the concentration of harmful components of exhaust gases, mainly hydrocarbons and nitrogen oxides. A positive effect of the operation of the engine powered by CNG was also a significant reduction of carbon dioxide in the exhaust gases compared to the engine powered with gasoline.

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“…1 However, the use of NG in naturally aspirated spark ignition (SI) engines can decrease the peak torque and power due to a reduction in volumetric efficiency when compared to a counterpart gasoline SI engine. 2 Turbocharged SI engines could potentially minimise these effects and take advantage of the high knock resistance of NG but the overall engine cost might not be competitive. Moreover, the use of NG in a lean combustion system is challenging due to reduced mixture flammability, resulting in poor fuel conversion efficiency.…”

Section: Introductionmentioning

confidence: 99%

The effects of natural gas composition on conventional dual-fuel and reactivity-controlled compression ignition combustion in a heavy-duty diesel engine

Pedrozo

Wang

Guan

et al. 2021

International Journal of Engine Research

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The use of natural gas (NG) in dual-fuel heavy-duty engines has the potential to reduce pollutant and greenhouse gas (GHG) emissions from the transport sector when compared to the conventional diesel engines. However, NG composition and methane slip are of interest because both can adversely affect the benefits of NG as an alternative fuel, especially when considering GHG emissions. Therefore, this study experimentally investigated the effects of NG fuel properties on the performance and emissions of both conventional dual-fuel and reactivity-controlled compression ignition (RCCI) engine operations. Three different gas mixtures were selected to simulate typical NG compositions available in the world market, with methane numbers (MN) of 80.9, 87.6 and 94.1. These fuels were tested in a single-cylinder compression ignition engine operating at 0.6, 1.2 and 1.8 MPa net indicated mean effective pressure (IMEP). A high-pressure common rail system allowed for the use of various diesel injection strategies while a variable valve actuation system enabled the effective compression ratio to be adjusted via late intake valve closing (LIVC). The RCCI combustion was found to be more sensitive to changes in MN than the conventional NG-diesel dual-fuel operation. The gas mixture with the lowest MN reduced both total unburned hydrocarbons emissions and methane slip at the expense of higher nitrogen oxides (NOx) emissions. The effects of MN on the net indicated efficiency were more significant at 0.6 MPa IMEP, yielding differences of up to 4.9% between the RCCI operations with the lowest and highest MN fuels. Overall, this work revealed that the combination of the RCCI combustion and LIVC can achieve up to 80% lower methane slip and NOx emissions and relatively higher net indicated efficiency than the conventional dual-fuel regime, independent of the NG composition.

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Exploring the potential of ethanol, CNG, and syngas as fuels for lean spark-ignition combustion - An experimental study

Cited by 34 publications

References 18 publications

Experimental based comparative exergy analysis of a spark‐ignition Honda GX270 Genset engine fueled with LPG and syngas

Experimental based comparative exergy analysis of a spark‐ignition Honda GX270 Genset engine fueled with LPG and syngas

The Environmental Safety of the Fiat 0.9 TwinAir Compressed Natural Gas Engine

The effects of natural gas composition on conventional dual-fuel and reactivity-controlled compression ignition combustion in a heavy-duty diesel engine

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