Effects of compression ratio, swirl augmentation techniques and ethanol addition on the combustion of CNG–biodiesel in a dual-fuel engine

Banapurmath, N. R.; Budzianowski, Wojciech M.; Basavarajappa, Y.H.; Hosmath, R. S.; Yaliwal, V.S.; Tewari, P.G.

doi:10.1080/19397038.2013.798712

Cited by 31 publications

(22 citation statements)

References 39 publications

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“…Lower smoke emissions in DFC than diesel SFC were reported. Poor part load efficiency was reported for dual fuel engine operation [4][5][6][7]25]. Flammability limit of the lean homogenous charge which leads to incomplete combustion or in the worst case absence of combustion was reported to be responsible for the observed trend [7,25].…”

Section: Introductionmentioning

confidence: 99%

“…Poor part load efficiency was reported for dual fuel engine operation [4][5][6][7]25]. Flammability limit of the lean homogenous charge which leads to incomplete combustion or in the worst case absence of combustion was reported to be responsible for the observed trend [7,25]. When the HCNG is premixed with the intake air during the induction stroke, an increase in HC emissions were also seen due to the impact of air/fuel mixture trapped in crevices in the combustion chamber during the compression stroke [7,9,16,26].…”

Section: Introductionmentioning

confidence: 99%

“…Dual fuel engines have an ability of reducing both PM and NOx to levels significantly lower than that of traditional diesel engines [12]. Combustion and exhaust emission characteristics of dual fuel compression ignition engines using diesel and HCNG have been reported [5,7]. In general, an HCNG engine uses the extended flammability limit in favor of hydrogen addition so that the specific fuel consumption and the NOx emission can be improved.…”

Section: Introductionmentioning

confidence: 99%

“…The production of unburned hydrocarbons can be minimized because of hydrogen's short quenching distance, and the application of a lean-burn spark ignition engine is easy because the self-ignition temperature is high and the burning speed is fast [ 4,5]. High thermal efficiency of diesel engines are utilized to improve both performance and emissions [6][7][8][9][10]. However, diesel engines still have a major problem of higher NOx and smoke or particulate matter (PM) due to governing combustion mechanisms [3,7,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…High thermal efficiency of diesel engines are utilized to improve both performance and emissions [6][7][8][9][10]. However, diesel engines still have a major problem of higher NOx and smoke or particulate matter (PM) due to governing combustion mechanisms [3,7,[9][10][11]. New methods for reducing the exhaust emissions by avoiding the combustion regions where NOx and smoke are mainly generated have been investigated [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Performance, Combustion and Emission characteristics of a Manifold Injected HCNG-Biodiesel Dual Fuel Operation / Bir Manifolda Enjekte Edilen HCNG-Biyodizelin Çift Yakıtlı Çalışmasının Performans, Yanma ve Emisyon Karakteristikleri

Gireesh¹,

Banapurmath²,

Tewari³

2016

IJAET

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Vehicular exhaust emission control and engine efficiency are the most important parameters in current engine design. The Euro V emission norms are directing the research towards developing new technologies for combating engine emissions. Natural gas has become a widely used alternative fuel due to its many advantages including its ready availability and its low emission levels. Addition of hydrogen to CNG improves the composition and properties of base fuel CNG. In the present work a diesel engine was converted to operate in dual fuel engine mode in which Hydrogen-compressed natural gas (HCNG) was injected into the intake manifold using a specially developed electronic control unit (ECU) while diesel/biodiesel was injected directly inside the combustion chamber during the compression stroke. Experimental investigations were then carried out on a single cylinder four stroke CI engine test rig operated in dual fuel mode using Diesel, Honge methyl ester (HOME), Jatropha methyl ester (JOME) as injected pilot fuels and HCNG as injected primary fuel. ECU was used for varying the injection timings and injection durations for HCNG injection while the optimum injection timing for diesel/biodiesel was maintained at 27°bTDC.The pilot fuel injection pressure was maintained at 230 bar. Engine was operated with constant compression ratio of 17.5 and HCNG flow rate was maintained at 0.5kg/h. The experimental results showed that an injection timing of 5 o bTDC and injection duration of 40 o bTDC for HCNG injection was found to be optimum based on the improved performance, combustion and emission characteristics. The brake thermal efficiency for manifold injected HCNG dual fuel operation with diesel, HOME and JOME at 80% load was found to be 28.1%, 27.2% and 26.2% respectively. The Smoke emissions, Carbon monoxide (CO), Carbon dioxide (CO2) emissions were found to be lesser with an injection timing of 5 o bTDC and injection duration of 40 o bTDC in HCNG injected dual fuel operation. The use of HCNG manifold injection in the dual fuel operated CI engine improves the performance and reduces the exhaust emissions from the engine except for HC and NOX emissions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance, Combustion and Emission characteristics of a Manifold Injected HCNG-Biodiesel Dual Fuel Operation / Bir Manifolda Enjekte Edilen HCNG-Biyodizelin Çift Yakıtlı Çalışmasının Performans, Yanma ve Emisyon Karakteristikleri

Gireesh¹,

Banapurmath²,

Tewari³

2016

IJAET

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Effect of Nanoparticles on the Performance and Emission Characteristics of Diesel Engine Operated with Different Fuels

Firew

Alemayehu

Nallamothu

et al. 2021

Recent Advances in Sustainable Technologies

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Experimental analysis on the influence of compression ratio, flow rate, injection pressure, and injection timing on the acetylene — diesel aspirated dual fuel engine

Thodda

Kathapillai

Madhavan

et al. 2022

Environ Sci Pollut Res

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The predicted scarcity, increasing cost of petroleum fuels and environmental degradation are encouraging researchers to search for alternative fuels throughout the world. Hence, it is intended to utilize acetylene-based DF in the compression ignition (CI) engine with minor modi cations. An engine of 5 Hp, four stroke, single-cylinder, water-cooled operated in dual-fuel (DF) mode (acetylene gas-diesel), aiming to reduce the emissions, was deployed to investigate its characteristics. In DF mode, gaseous fuel is injected through a gas velocity of 2, 4, and 6 Lpm constantly. According to the research ndings, the gas velocity of 6 Lpm provides the best results, having a superior BTE of 30.7%. Various compression ratios (16:1, 18:1, and 20:1) were used to determine the optimal compression ratio (CR) under a gas velocity of 6 Lpm with diesel. Fuel Injector pressure (200, 220, and 240 bar) with injector intervals (19 o , 23 o , and 27 o bTDC) were changed consecutive sequence while adjusting CR, and the best outcomes for improved CI fuel e ciency were determined. From the investigational analysis, the peak in-cylinder pressure and net HRR (heat release rate) are assessed for being better by the increment in CR in DF mode of operation with an acetylene gas of 6 Lpm at all operating settings. At a 240 bar injection pressure, the BTE is recorded highest (35.1%) and smoke was decreased. An IT of 23obTDC, the CO and HC were found as to be minimum as 28ppm and 0.04ppm.

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Effects of compression ratio, swirl augmentation techniques and ethanol addition on the combustion of CNG–biodiesel in a dual-fuel engine

Cited by 31 publications

References 39 publications

Performance, Combustion and Emission characteristics of a Manifold Injected HCNG-Biodiesel Dual Fuel Operation / Bir Manifolda Enjekte Edilen HCNG-Biyodizelin Çift Yakıtlı Çalışmasının Performans, Yanma ve Emisyon Karakteristikleri

Performance, Combustion and Emission characteristics of a Manifold Injected HCNG-Biodiesel Dual Fuel Operation / Bir Manifolda Enjekte Edilen HCNG-Biyodizelin Çift Yakıtlı Çalışmasının Performans, Yanma ve Emisyon Karakteristikleri

Effect of Nanoparticles on the Performance and Emission Characteristics of Diesel Engine Operated with Different Fuels

Experimental analysis on the influence of compression ratio, flow rate, injection pressure, and injection timing on the acetylene — diesel aspirated dual fuel engine

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