Effect of Pilot Fuel Quantity on the Performance and Emission of a Dual Producer Gas–Diesel Engine

Sombatwong, Pisarn; Thaiyasuit, Prachasanti; Pianthong, Kulachate

doi:10.1016/j.egypro.2013.06.750

Cited by 61 publications

(30 citation statements)

References 10 publications

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“…Although there is an improvement of the excess air ratio considering reduction of air supply, the excess air ratio still remains at a relatively lean level of 3.25 at low load. When the substitution rate is below 60%, the BSEC increases with the increase of substitution rate in a slight range in accordance with findings in [27]. The difference of BSEC increase reaches 35.1% between dual-fuel 60% substitution rate and diesel-throttle opening 100% working point.…”

Section: Characteristics Of Bsecsupporting

confidence: 88%

Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

et al. 2018

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Lowering the amount of excess air is believed to increase the density of the air-fuel mixture and help improve the combustion rate for compression ignition engines. This paper proposes an approach of adding a throttle body at the intake pipe to control the excess air ratio with reduction of air supply to achieve a better balance between the power, emissions and fuel efficiency at medium and low load of a natural gas dual-fuel diesel engine converted from a conventional diesel engine. Various experiments in both pure diesel and dual-fuel mode under intermediate engine speed are performed with the proposed critical method of excess air ratio control. The experimental results reveal that better excess air ratio is very beneficial for the power output and brake specific energy consumption in dual-fuel combustion under medium and low load conditions. Moreover, the substitution rate can reach as high as 40% under low load conditions with throttle control.

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Section: Characteristics Of Bsecsupporting

confidence: 88%

Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

et al. 2018

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“…Influence of pilot fuel quantity (0.22, 0.29 and 0.35 kg/h) on the combustion and exhaust of a producer gas fuelled dual fuel engine has been examined. Amplified thermal efficiency, with declined pilot fuel saving and CO levels have been stated with an increased pilot fuel quantity [14]. Influence of various combustion chamber geometries on the combustion of Calophyllum Inophyllum methyl ester and babul wood chip derived producer gas combination has been reported [15].…”

Section: Introductionmentioning

confidence: 99%

Combustion and emission characteristics of a compression ignition engine operated on dual fuel mode using renewable and sustainable fuel combinations

Yaliwal

Banapurmath

2021

SN Appl. Sci.

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The present experimental study aims to examine the combustion and emission characteristics of a single cylinder four stroke direct injection diesel engine operated in dual fuel mode using dairy scum oil methyl ester (DiSOME) and its blend (B20)—producer gas combination with and without addition of hydrogen. DiSOME/B20-producer gas combination without hydrogen addition exhibited inferior performance with increased hydrocarbon and carbon monoxide emissions owing to poor physic-chemical properties of both biodiesel and inducted low calorific value gas (producer gas) compared to the same fuel combination with hydrogen. Producer gas was inducted along with air, and hydrogen was allowed to mix with air-producer gas combination in the intake manifold. Experimental investigations were conducted at all load conditions and at constant flow rate of hydrogen (8 lpm). It was noticed that that B20-hydrogen enriched producer gas combination with optimum parameters resulted in amplified thermal efficiency with reduced emission levels compared to the operation with B20/DiSOME-producer gas combination. However, investigation showed that diesel-producer gas combination with hydrogen addition provided amplified brake thermal efficiency by 3.8%, 16.4% and 13.2% compared to the diesel/DiSOME/B20—producer gas combinations, respectively, at 80% load. Hydrogen addition provided enhanced cylinder pressure and heat release rate with reduced emission levels except nitric oxide emissions. It can be concluded that the deprived combustion associated with DiSOME/B20-producer gas combination can be improved with hydrogen addition. The combination of DiSOME-producer gas operation with hydrogen addition is uniqueness of this present work.

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“…A lot of research articles noted that dual-fuel operation with biomass-derived gaseous fuel in diesel engine generates lower NOx and soot emission compared to diesel mode while HC and CO emissions were increased. However, using dual-fuel concept, a diesel saving of 60-80% was achieved [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Comparative assessment of biogas and producer gas with diesel in a twin cylinder dual-fuel diesel engine

Nayak¹,

Sahoo

2020

J Braz. Soc. Mech. Sci. Eng.

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The present work describes the preparation of producer gas and biogas from waste biomass material and its application in a twin cylinder dual-fuel diesel engine to study their performance and emission characteristics by the fractional replacement of fossil diesel in dual-fuel mode. Experiments are carried out both in diesel mode as well as dual-fuel mode operation under different engine loads. Comparative outcomes of performance and emission parameters for both modes of operations are presented. The study reveals that dual-mode operations show lower performance characteristics but better control of emission parameters like nitric oxide (NO) and smoke opacity compared to diesel mode. The hydrocarbon emission of producer gas-diesel and biogas-diesel was found to be 65.8% and 109.7% respectively, higher than diesel mode at the optimum load of 8 kW. Similarly, brake thermal efficiency of dual-mode operation of producer gas-diesel and biogas-diesel was 2.47% and 1.67%, respectively, lower than diesel mode. The pilot fuel savings percentage achieved was 85.5% in biogas-diesel and 83% in producer gas-diesel operation at the same loading condition. Further, comparing biogas with producer gas, it was observed that some of the emission parameters like carbon monoxide CO and NO were better controlled by biogas than producer gas whereas, HC and smoke emissions were better controlled by producer gas than biogas.

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Effect of Pilot Fuel Quantity on the Performance and Emission of a Dual Producer Gas–Diesel Engine

Cited by 61 publications

References 10 publications

Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

Combustion and emission characteristics of a compression ignition engine operated on dual fuel mode using renewable and sustainable fuel combinations

Comparative assessment of biogas and producer gas with diesel in a twin cylinder dual-fuel diesel engine

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