Effect of natural gas enrichment with hydrogen on combustion characteristics of a dual fuel diesel engine

Ouchikh, S.; Lounici, Mohand Said; Tarabet, Lyes; Loubar, Khaled; Tazerout, Mohand

doi:10.1016/j.ijhydene.2019.03.179

Cited by 85 publications

(26 citation statements)

References 38 publications

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“…Heat release rate profiles of a hydrogen/natural gas engine presented double-peak over various engine loads. The first peak decreased with engine loads; however, the second peak showed the opposite tendency [57]. By contrasting with Figure 6, cylinder pressure at 5000 RPM was higher than 1000 RPM; however, the heat release was lower at the first half of combustion process.…”

Section: Combustion Characteristicsmentioning

confidence: 70%

Numerical simulation on the combustion and NOx emission characteristics of a turbocharged opposed rotary piston engine fuelled with hydrogen under wide open throttle conditions

Gao

Xing

Tian

et al. 2021

Fuel

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Section: Combustion Characteristicsmentioning

confidence: 70%

Numerical simulation on the combustion and NOx emission characteristics of a turbocharged opposed rotary piston engine fuelled with hydrogen under wide open throttle conditions

Gao

Xing

Tian

et al. 2021

Fuel

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“…The beneficial effects, at low loads, of the H 2 enrichment in DF (NG-diesel) combustion on BTE and CO 2 , CO, and UHC emissions is confirmed by several authors. The investigation of Ouchikh et al 38 proved the enrichment of NG with H 2 is able to reduce the difference in terms of BTE between DF and CDC operation. Talibi et al 39 explored, on a naturally aspirated, direct injection, compression ignition single-cylinder engine, the combustion of various CH 4 -H 2 mixtures, pilot-ignited by diesel.…”

Section: Introductionmentioning

confidence: 99%

Influence of H₂ enrichment for improving low load combustion stability of a Dual Fuel lightduty Diesel engine

Mattarelli

Rinaldini

Caprioli

et al. 2021

International Journal of Engine Research

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Dual Fuel (DF) combustion can help to reduce the environmental impact of internal combustion engines, since it may provide excellent Brake Thermal Efficiency (BTE) combined with ultra-low emissions. This technique is particularly attractive when using biofuels, or fuels with a low Carbon content, such as Natural Gas (NG). Unfortunately, as engine load decreases and the homogeneous NG-air mixture tends to become very lean, the high chemical stability of NG can be a serious obstacle to the completion of combustion. As a result, BTE drops and UHC and CO emissions become very high. A possible way to address this problem could be the addition of hydrogen (H2) to the NG-air mixture. In this paper, a numerical study has been carried out on an automotive Diesel engine, modified by the authors in order to operate in both conventional Diesel combustion and DF NG-diesel mode. A previous experimental characterization of the engine is the basis for the CFD-3D modeling and calibration of the DF combustion process, using a commercial software. The effects on combustion stability and emissions of different NG-H2 mixtures (six blends with 5%, 10%, 15%, 20%, 25%, and 30% by volume of hydrogen) are numerically investigated at a low load (BMEP = 2 bar, engine speed 3000 rpm). The results of the CFD-3D simulations demonstrate that NG-H2 blends are able to decrease strongly CO, UHC, and CO2 emissions at low loads. Advantages are also found in terms of thermal efficiency and NOx emissions.

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“…Rajpara et al [12] investigated the emission properties of a CH4 / H2 mixture in a combustion chamber and observed that the addition of hydrogen increases the flame temperature, reduces the flame dimensions and thus CO. Other studies [13] focused on the thermoeconomic evaluation of a new integrated CHP system integrating solar energy-based technologies, a biogas-steam reformer with methanol, and hydrogen generation. Ouchikh et al [14] investigated of the influence of hydrogen enrichment in natural gas on the combustion parameters of a dual-fuel diesel engine. Cappelletti et al [15] described a numerical redesign of a 100 kW MGT combustion chamber for 100 percent hydrogen and showed that a hydrogen-powered combustion chamber produces more NOx than a CH4 combustion chamber, but combustion with hydrogen enables the combustion chamber to operate in lean conditions.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of a Micro Gas Turbine Fuelled with Hydrogen and Natural Gas Blends

2021

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This study deals with implementing an analytical model to simulate the energy performance associated with a Micro Gas Turbine when H2NG (Hydrogen Enriched Natural Gas) blends are used as fuel. The experimental campaign validated the simulation results at the actual operating conditions of the Micro Gas Turbine. The experimental campaign for model validation has been carried out over the spring and summer periods. Additionally, the MGT performance has been detected when fuelled H2NG with hydrogen fraction ranges between 0% vol. to 10% vol., with a 2% vol. Step., according to the main findings, the fuel consumption is reduced significantly. Also, heat recovery and electrical reliability improve slightly even though environmental factors influence the system. A numerical model was developed with MATLAB-Simulink to model the operation of the MGT. Thus, the relative standard errors affecting the main output parameters have been determined.

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Effect of natural gas enrichment with hydrogen on combustion characteristics of a dual fuel diesel engine

Cited by 85 publications

References 38 publications

Numerical simulation on the combustion and NOx emission characteristics of a turbocharged opposed rotary piston engine fuelled with hydrogen under wide open throttle conditions

Numerical simulation on the combustion and NOx emission characteristics of a turbocharged opposed rotary piston engine fuelled with hydrogen under wide open throttle conditions

Influence of H₂ enrichment for improving low load combustion stability of a Dual Fuel lightduty Diesel engine

Modeling and Analysis of a Micro Gas Turbine Fuelled with Hydrogen and Natural Gas Blends

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Effect of natural gas enrichment with hydrogen on combustion characteristics of a dual fuel diesel engine

Cited by 85 publications

References 38 publications

Numerical simulation on the combustion and NOx emission characteristics of a turbocharged opposed rotary piston engine fuelled with hydrogen under wide open throttle conditions

Numerical simulation on the combustion and NOx emission characteristics of a turbocharged opposed rotary piston engine fuelled with hydrogen under wide open throttle conditions

Influence of H2 enrichment for improving low load combustion stability of a Dual Fuel lightduty Diesel engine

Modeling and Analysis of a Micro Gas Turbine Fuelled with Hydrogen and Natural Gas Blends

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Influence of H₂ enrichment for improving low load combustion stability of a Dual Fuel lightduty Diesel engine