A Study of the Emissions of a Dual Fuel Engine Operating with Alternative Gaseous Fuels

Mustafi, Nirendra N.; Raine, Robert R.

doi:10.4271/2008-01-1394

Cited by 62 publications

(35 citation statements)

References 22 publications

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“…The original injection system of the engine is maintained for the dual fuel operations. Further detail of the engine and PM sampling system are in Mustafi and Raine (2008).…”

Section: Test Engine Facility and Methodsmentioning

confidence: 99%

“…This indicates that there is a significant contribution of gaseous fuels on the total elemental carbon mass fractions during dual fueling under the engine operating conditions. However, the net result is far below the level of emissions of diesel (high) load, as gaseous fuels tend to produce much less amount of PM (Mustafi and Raine 2008). Table 2 presents the actual mass of the samples lost during TGA for different engine fueling conditions.…”

Section: Elemental Carbon (Ec) Fractionmentioning

confidence: 99%

“…The details of the system are described in Mustafi and Raine (2008). The dilution ratio (DR) is maintained at approximately 10 to 1 for the whole experimental program.…”

Section: Exhaust Dilution and Pm Sampling Systemsmentioning

confidence: 99%

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Characterization of Exhaust Particulates from a Dual Fuel Engine by TGA, XPS, and Raman Techniques

Mustafi

Raine

James

2010

Aerosol Science and Technology

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Particulate matter (PM) emitted from a dual fuel engine is characterized using thermogravimetry, X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Thermogravimetric analysis (TGA) provides the mass fractions of elemental carbon and volatile materials in PM; XPS provides the possible chemical compositions in the topmost layer of PM surface and Raman analysis provides the possible structure of the carbon presented in PM. Dual fuel engine uses both liquid (diesel) and gaseous fuels simultaneously to produce mechanical power and can be switched to only diesel fueling under load. The dual fuel engine is operated with natural gas and simulated biogases (laboratory prepared) and results are compared between the dual fueling and diesel fueling under the same engine operating conditions. Significantly higher volatile fractions in PM are obtained for dual fueling compared to diesel fueling complementing the gravimetric results. The maximum contribution of the graphitic carbon or aliphatic carbon such as hydrocarbons and paraffins (C C or C C) are found in the topmost atomic layers of both the diesel and dual fuel PM samples. The other chemical states are found to be the carbon-oxygen functional groups indicating significant oxidation behavior in the PM surface. Lesser aromatic content is noticed in the case of dual fuel PM than diesel PM. The carbon in dual fuel PM is found to be more amorphous compared to diesel PM. These characterizations provide us new information how the PM from a diesel engine can be different from that from a dual fuel engine.

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“…The original injection system of the engine is maintained for the dual fuel operations. Further detail of the engine and PM sampling system are in Mustafi and Raine (2008).…”

Section: Test Engine Facility and Methodsmentioning

confidence: 99%

Section: Elemental Carbon (Ec) Fractionmentioning

confidence: 99%

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Characterization of Exhaust Particulates from a Dual Fuel Engine by TGA, XPS, and Raman Techniques

Mustafi

Raine

James

2010

Aerosol Science and Technology

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“…N. N. Mustafi et al reported an experimental investigation of a biogas-diesel dual-fuel engine. The attained results revealed that the PM and NO X emissions were much smaller than those of diesel operation [19] . The combustion process has great effect on power, economy and emission performance of engines, and there is a great deal of research on combustion process of diesel engines.…”

Section: Introductionmentioning

confidence: 75%

An experimental investigation on the cylinder pressure of a biogas-diesel dual fuel engine

Zhou¹,

Luo²

2016

Proceedings of the 2016 International Conference on Civil, Transportation and Environment

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Abstract. By substituting a considerable amount of diesel fuel in diesel engines, combustible biogas is considered to be a renewable and promising alternative gaseous fuel. In this paper, biogas was made from agricultural and forestry residues with a gasifier. Its high quality was ensured by the process of cooling to obtain high density and condensation and by filtering to remove water vapor and tar. The dual fuel engine that was refitted from a diesel engine was fueled with biogas as the main fuel and diesel as the pilot fuel. In order to compare the combustion characteristics of biogas-diesel dual fuel engine and diesel engine, the cylinder pressure of dual fuel engine and diesel engine under load characteristics at different speeds was measured, and the characteristic combustion parameters such as combustion start timing, the maximum combustion pressure and the corresponding phase at different load and speed were analyzed. Meanwhile, the influence of different fuel supply advance angle on engine combustion process was measured and studied. The results show that the start timing of combustion of dual fuel engine is later than that of diesel engine, and that the maximum combustion pressure and the maximum pressure rise rate are higher than those of diesel engine at low speed and high load, but lower in all other conditions. Post combustion is more significant and exhaust temperature is higher under the biogas-diesel dual fuel operation at most operating conditions except for low speed and high load. The peak cylinder pressures of engines increase as fuel injection timing advances.

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“…Also HOME-producer gas operation showed improvement in heat release rate compared to neat honge oil-producer gas dual fuel operation. Mustafi and Raine (2008) experimentally investigated the exhaust emission characteristics of a direct injection (DI) diesel engine operated with natural gas or biogas-diesel dual-fuels. Their study showed that stable engine operation was possible with natural gas (NG) and biogas fueling without any modifications to either the engine or its operation, and that the particulate matter (about 70% by mass) and NOx emissions (maximum of 37% by mass) of dual-fueling were much lesser than those of diesel fueling operating under the same condition.…”

Section: Introductionmentioning

confidence: 99%

Combustion characteristics of diesel engine using producer gas and blends of Jatropha methyl ester with diesel in mixed fuel mode

Raheman

Padhee

2014

Int. J. Renew. Energy Dev.

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An experimental investigation was performed to study the combustion characteristics of diesel engine fuelled with producer gas-biodiesel in dual fuel mode. Three different fuel blends of Jatropha methyl ester with high speed diesel (HSD) (B10, B20) and B100 were used with producer gas obtained from the gasification of briquettes made from de-oiled Jatropha seed cake. The increments in load on the engine increased the brake thermal efficiency, exhaust gas temperature and lowered the brake specific energy consumption. The ignition delays in dual-fuel mode of operation for both the fuels were longer than for single-fuel mode of operation. Combustion pressure and heat release rate (HRR) patterns at different engine loads were found to be simila r for biodiesel and HSD. In dual-fuel mode, the peak pressure and HRR for producer gas-biodiesel dual-fuel were slightly lower than those of producer gas-diesel combustion at full load condition. Significantly lower NOx emissions were obtained under the dual fuel mode of operation for both pilot fuels compared to the single-fuel mode especially HSD under all test conditions.

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A Study of the Emissions of a Dual Fuel Engine Operating with Alternative Gaseous Fuels

Cited by 62 publications

References 22 publications

Characterization of Exhaust Particulates from a Dual Fuel Engine by TGA, XPS, and Raman Techniques

Characterization of Exhaust Particulates from a Dual Fuel Engine by TGA, XPS, and Raman Techniques

An experimental investigation on the cylinder pressure of a biogas-diesel dual fuel engine

Combustion characteristics of diesel engine using producer gas and blends of Jatropha methyl ester with diesel in mixed fuel mode

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