The effect of EGR and hydrogen addition to natural gas on performance and exhaust emissions in a diesel engine by AVL fire multi-domain simulation, GPR model, and multi-objective genetic algorithm

Zareei, Javad; Abbas, Rohani; Álvarez, José R.

doi:10.1016/j.ijhydene.2022.04.294

Cited by 13 publications

(2 citation statements)

References 56 publications

(39 reference statements)

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“…17 In laboratory-scale experiments, the effects of EGR have been confirmed in hydrogen-diesel and Wankel engines. [18][19][20][21] In some studies, nitrogen was supplied from external sources to simulate EGR, and analysis was conducted based on 3-D simulation results. As a result, the reduction of nitrogen oxides by EGR and the partial increase in output due to knock prevention were confirmed.…”

Section: Introductionmentioning

confidence: 99%

Effects of exhaust gas recirculation on nitrogen oxides, brake torque and efficiency in a hydrogen direct injection spark ignition engine

Kim,

Ha,

Park

et al. 2024

International Journal of Engine Research

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This study investigated the effects of exhaust gas recirculation (EGR) on emission and efficiency in a hydrogen direct injection spark ignition engine. EGR was supplied as the low-pressure (LP)-EGR system by controlling EGR valve from zero to 18.7% in terms of mass fraction. The result showed that EGR effect on nitrogen oxides (NOx) reduction became enlarged as higher engine speed due to increasing residual gas fraction. Also, under the same excessive air ratio (λ:2.2), EGR addition made NOx reduction from 89.9 to 98.7 % as varying engine speed. As NOx limit was low, the maximum brake torque was also reduced. However, by using appropriate EGR, NOx margin could be converted to increasing brake torque under the same NOx concentration level from 1.9% to 18.2% as varying engine speeds. From this result, to achieve the maximum output when reaching the turbocharger’s limit in a hydrogen engine and effectively reduce nitrogen oxide emissions, it is not only dependent on lean combustion but also effective to incorporate approximately 20% EGR into the operating strategy.

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Section: Introductionmentioning

confidence: 99%

Effects of exhaust gas recirculation on nitrogen oxides, brake torque and efficiency in a hydrogen direct injection spark ignition engine

Kim,

Ha,

Park

et al. 2024

International Journal of Engine Research

View full text Add to dashboard Cite

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“…The selective catalytic reduction as an aftertreatment system has proved significant reduction in both NOx and PM compared to engine without this system [4][5][6]. Similarly, The exhaust gas recirculation (EGR) contribute to reduce NOx and PM emission [7][8][9]. Correspondingly, The diesel particulate filter has proven dramatic decrease on PM emission [5].…”

Section: Introductionmentioning

confidence: 99%

Diesel Engine Fuel and Fuel Emulsion Influence on Diesel Engine Performance and Emission

Ahmed Elsanusi,

Elayeb,

Aburwais

et al. 2023

Diesel Engines - Current Challenges and Future Perspectives

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The diesel engine’s superior energy conversion efficiency and cost-effective power source have made it a popular choice for a wide range of applications, including but not limited to agricultural machinery, transportation, and mining equipment. Diesel engines produce harmful emissions, including exhaust fumes that contain pollutants such as particulate matter and nitrogen oxides. These emissions are detrimental to the environment and public health, and as a result, strict standards are imposed to reduce them using modern technologies in diesel engine manufacturing, exhaust treatment systems improvement and fuel modifying technologies. This chapter reviewed the effect of wide verity of fuel in diesel engine performance and emission.

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Investigation of the Impact of Combustion Chamber Geometry on Engine Combustion and Emission Performance Under Various Fuel Injection Timings With Biodiesel Blending

Wang,

Bao,

et al. 2024

Energy Science & Engineering

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This study uses AVL FIRE 2020 R1 software for simulation and experimental verification to deeply analyze the impact of combustion chamber geometry and biodiesel on diesel engine performance at different injection timings. The study found that: With the advancement of injection timing, the indicated fuel consumption rate, cylinder pressure and NOx emissions of the two combustion systems increased, while the indicated thermal efficiency, temperature and Soot emissions decreased accordingly; The blending of low calorific value biodiesel will increase the indicated fuel consumption rate of the two combustion systems, but at the same time it can effectively reduce NOx and Soot emissions; The T: Turbocharger, C: Charger air cooling, D: Diesel particle filter (TCD) combustion system improves the utilization rate of cylinder air due to its unique combustion chamber geometry, thereby improving combustion performance. Compared with the Omega combustion system, the indicated thermal efficiency of the TCD combustion system increased by 6.16% to 8.38% and the indicated fuel consumption rate decreased by 5.80% to 7.73% when burning four types of fuel. In addition, the in‐cylinder pressure and temperature increased, and it performed better in reducing Soot emissions. The research results show that the TCD combustion system can effectively improve the combustion and emission performance of diesel engines, provide data support for the development of diesel engine combustion systems and the combustion of oxygen‐containing fuels in plateau environments, and provide an important reference for energy conservation and emission reduction.

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The effect of EGR and hydrogen addition to natural gas on performance and exhaust emissions in a diesel engine by AVL fire multi-domain simulation, GPR model, and multi-objective genetic algorithm

Cited by 13 publications

References 56 publications

Effects of exhaust gas recirculation on nitrogen oxides, brake torque and efficiency in a hydrogen direct injection spark ignition engine

Effects of exhaust gas recirculation on nitrogen oxides, brake torque and efficiency in a hydrogen direct injection spark ignition engine

Diesel Engine Fuel and Fuel Emulsion Influence on Diesel Engine Performance and Emission

Investigation of the Impact of Combustion Chamber Geometry on Engine Combustion and Emission Performance Under Various Fuel Injection Timings With Biodiesel Blending

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