Experimental exploration of hydrogen enrichment in a dual fuel CI engine with exhaust gas recirculation

Rahman, M.A.; Ruhul, A. M.; Aziz, Mohammad Abdul; Ahmed, Raju

doi:10.1016/j.ijhydene.2016.11.109

Cited by 68 publications

(15 citation statements)

References 32 publications

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“…As can be seen, the amount of BSFC for HHO-enriched fuels is lower than for Diesel, B5, and B20 fuels. This is due to the high heat value content of HHO gas compared to biodiesel and diesel fuels (Table 2), air-hydrogen mixing, and high hydrogen flame speed (Saravanan et al, 2008b), which has improved the combustion of the biodiesel-diesel fuel blends (Rahman et al, 2017). The results showed that adding 3 and 4 cc/s of HHO gas to D, B5, and B20 fuels did not make a significant difference in BSFC.…”

Section: Brake Specific Fuel Consumptionmentioning

confidence: 99%

“…By adding HHO gas, the exhaust gas temperature increases (Kumar et al, 2003). Also, enriching the biodiesel-diesel fuel blends with high-calorie HHO gas (Table 2) causes more intense combustion and increases the combustion temperature in the cylinder (Kumar et al, 2003;Rahman et al, 2017). Also, the oxygen in HHO gas increases the combustion efficiency of biodiesel-diesel fuels, in which case the energy released rate from the fuels increases and the combustion temperature in-cylinder increases.…”

Section: Engine Performancementioning

confidence: 99%

“…HHO gas causes better air-fuel mixing (Saravanan et al, 2008b). As a result, biodiesel/diesel fuel blends' combustion is improved (Rahman et al, 2017), reducing fuel consumption per kWh of braking power (Figure 11). Reducing the actual fuel consumption compared to its stoichiometric consumption reduces the equilibrium ratio (∅).…”

Section: Brake Thermal Efficiencymentioning

confidence: 99%

See 2 more Smart Citations

Effects of low-level hydroxy as a gaseous additive on performance and emission characteristics of a dual fuel diesel engine fueled by diesel/biodiesel blends

Najafi

haghighatshoar

Ardabili

et al. 2021

Engineering Applications of Computational Fluid Mechanics

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Section: Brake Specific Fuel Consumptionmentioning

confidence: 99%

Section: Engine Performancementioning

confidence: 99%

Section: Brake Thermal Efficiencymentioning

confidence: 99%

See 1 more Smart Citation

Effects of low-level hydroxy as a gaseous additive on performance and emission characteristics of a dual fuel diesel engine fueled by diesel/biodiesel blends

Najafi

haghighatshoar

Ardabili

et al. 2021

Engineering Applications of Computational Fluid Mechanics

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“…The exhaust gas recycle (EGR) is a technique to minimize the formation of NOx in IC engines [157][158][159][160]. A fraction of the exhaust gases is recycled through a control valve from the exhaust to the engine intake manifold, which reduces the cylinder temperature and hence the quantity of Nox being formed is reduced [161][162][163][164][165].…”

Section: Exhaust Gas Recycle (Egr)mentioning

confidence: 99%

A Review of Performance-Enhancing Innovative Modifications in Biodiesel Engines

Khan

2020

Energies

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The ever-increasing demand for transport is sustained by internal combustion (IC) engines. The demand for transport energy is large and continuously increasing across the globe. Though there are few alternative options emerging that may eliminate the IC engine, they are in a developing stage, meaning the burden of transportation has to be borne by IC engines until at least the near future. Hence, IC engines continue to be the prime mechanism to sustain transportation in general. However, the scarcity of fossil fuels and its rising prices have forced nations to look for alternate fuels. Biodiesel has been emerged as the replacement of diesel as fuel for diesel engines. The use of biodiesel in the existing diesel engine is not that efficient when it is compared with diesel run engine. Therefore, the biodiesel engine must be suitably improved in its design and developments pertaining to the intake manifold, fuel injection system, combustion chamber and exhaust manifold to get the maximum power output, improved brake thermal efficiency with reduced fuel consumption and exhaust emissions that are compatible with international standards. This paper reviews the efforts put by different researchers in modifying the engine components and systems to develop a diesel engine run on biodiesel for better performance, progressive combustion and improved emissions.

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“…Mohanad et al [10] explored an improved performance and the emission reduction (apart from NO x ) of Rapeseed methyl ester blend (B20) and hydrogen fueled diesel engine. Rahaman et al [11] investigated the performance and emission parameters of the CI engine in dual fuel operation using biodiesel blend B40 and hydrogen at the flow rate of 4 lpm. They reported that the BTE was improved by 21.9% compared to standard diesel fuel.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive performance, combustion, emission, and vibration parameters assessment of diesel engine fuelled with a hybrid of niger seed oil biodiesel and hydrogen: response surface methodology approach

et al. 2020

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The present investigation centered on the application of response surface methodology to assess the engine operating parameters namely performance, combustion, emission, and vibration characteristics of variable compression ratio direct injection single-cylinder diesel engine operating with Niger seed oil methyl ester blend and hydrogen in dual fuel mode. Response surface models were developed using the experimental data of input and output variables. The fuel blend, load, compression ratio, and hydrogen flow rate were considered as input responses while the brake thermal efficiency, brake specific fuel consumption, cylinder pressure and net heat release rate, carbon monoxide (CO), unburnt hydrocarbon, Nitrogen oxides (NO x), smoke opacity, and RMS velocity respectively were considered as the output responses. The input conditions altered were: loads of 29.43 N (3 kgf), 58.86 N (6 kgf), 88.29 N (9 kgf), and 117.72 N (12 kgf), compression ratios of 16, 17.5, and 18.5, and the hydrogen flow rates of 5 lpm, 10 lpm, and 15 lpm. The output information of the test was assessed using response surface methodology (RSM) and the polynomial model (second-request) was created. The experimental values were in good match with RSM predicted values and maintained an R 2 value of more than 0.95 for all the test run combinations. Further, all the test points sustained comparatively within the 10% maximum deviation. Keywords Brake thermal efficiency • Compression ratio • Smoke opacity • Hydrogen • Cylinder pressure Abbreviations CR Compression ratio FB Fuel blend HFR Hydrogen flow rate (lpm) BTE Brake thermal efficiency (%) BSFC Brake specific fuel consumption (kg/kWhr) NSOME Niger seed oil methyl ester B20 20% NSOME in diesel CO Carbon monoxide (%) UHC Unburnt hydrocarbon (ppm) NOx Nitrogen oxides (ppm) CI Compression ignition ASTM American standards for testing materials ADC Analog to digital converter lpm Liter per minute CP Cylinder pressure (bar) NHRR Net heat release rate (J/deg.) q Net heat release rate (J/deg.) q Heat Heat transfer rate combustion chamber wall (J/deg.) V Volume change with crank angle (m 3 /deg.) p Pressure change with crank angle (bar/deg.)

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Experimental exploration of hydrogen enrichment in a dual fuel CI engine with exhaust gas recirculation

Cited by 68 publications

References 32 publications

Effects of low-level hydroxy as a gaseous additive on performance and emission characteristics of a dual fuel diesel engine fueled by diesel/biodiesel blends

Effects of low-level hydroxy as a gaseous additive on performance and emission characteristics of a dual fuel diesel engine fueled by diesel/biodiesel blends

A Review of Performance-Enhancing Innovative Modifications in Biodiesel Engines

Comprehensive performance, combustion, emission, and vibration parameters assessment of diesel engine fuelled with a hybrid of niger seed oil biodiesel and hydrogen: response surface methodology approach

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