Improving thermal efficiency of internal combustion engines: recent progress and remaining challenges

RY Dahham, H Wei, J Pan - Energies, 2022 - mdpi.com
Improving thermal efficiency and reducing carbon emissions are the permanent themes for
internal combustion (IC) engines. In the past decades, various advanced strategies have …

Effect of hydrogen/sapota seed biodiesel as an alternative fuel in a diesel engine using dual-fuel mode

R Jayabal - Process Safety and Environmental Protection, 2024 - Elsevier
The research aims to investigate the features of a dual-fuel mode diesel engine that runs on
hydrogen gas and sapota seed biodiesel (SSB) blend. Using gaseous hydrogen in diesel …

Effect of different volume fractions of ammonia on the combustion and emission characteristics of the hydrogen-fueled engine

G Xin, C Ji, S Wang, H Meng, K Chang… - International Journal of …, 2022 - Elsevier
Hydrogen internal combustion engines (ICE) will play an important role in reducing carbon
emissions, but low power density and abnormal combustion problems are the main …

Comparison and evaluation of advanced machine learning methods for performance and emissions prediction of a gasoline Wankel rotary engine

H Wang, C Ji, C Shi, Y Ge, H Meng, J Yang, K Chang… - Energy, 2022 - Elsevier
In order to improve the performance, reduce the emissions and enhance the calibration
efficiency of a gasoline Wankel rotary engine (WRE), three advanced machine learning (ML) …

Experimental investigation of variable compression ratio and ignition timing effects on performance, combustion, and Nox emission of an ammonia/hydrogen-fuelled …

MH Dinesh, GN Kumar - International Journal of Hydrogen Energy, 2023 - Elsevier
In the present experimental study hydrogen-assisted ammonia combustion strategy is used
in a SI engine with variable ignition timings (18ºCA bTDC to 32ºCA bTDC) and wide-open …

Effect of ammonia addition on combustion and emission characteristics of hydrogen-fueled engine under lean-burn condition

G Xin, C Ji, S Wang, H Meng, K Chang… - International Journal of …, 2022 - Elsevier
Hydrogen (H 2) is a carbon-free fuel with many excellent combustion characteristics, but
abnormal combustion is one of the main obstacles to the promotion and application of …

[HTML][HTML] Effects of compression and mixing ratio on NH3/H2 fueled Si engine performance, combustion stability, and emission

MH Dinesh, GN Kumar - Energy Conversion and Management: X, 2022 - Elsevier
Carbon-free fuels for the worldwide decarbonization movement are ammonia and hydrogen.
The experiment is conducted under WOT conditions with a constant ignition timing of 24° CA …

Effect of ammonia addition on combustion and emissions performance of a hydrogen engine at part load and stoichiometric conditions

C Ji, G Xin, S Wang, X Cong, H Meng, K Chang… - International Journal of …, 2021 - Elsevier
The development of alternative fuels is important in the fight against climate change. Both
hydrogen and ammonia are renewable energy sources and are carbon-free combustible …

Optical study on the effects of the hydrogen injection timing on lean combustion characteristics using a natural gas/hydrogen dual-fuel injected spark-ignition engine

R Zhang, L Chen, H Wei, J Pan, J Li, P Yang… - International Journal of …, 2021 - Elsevier
Lean combustion has the potential to achieve higher thermal efficiency for internal
combustion (IC) engines. However, natural gas engines often suffer from slow burning rate …

Effects of hydrogen addition on combustion and flame propagation characteristics of laser ignited methane/air mixtures

H Yilmaz, L Schröder, T Hillenbrand… - International Journal of …, 2023 - Elsevier
In this study, effects of hydrogen addition on combustion and flame propagation
characteristics of methane/air mixtures were investigated in a constant volume combustion …