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 …

Enhanced combustion of ammonia engine based on novel air-assisted pre-chamber turbulent jet ignition

Z Liu, L Zhou, L Zhong, H Wei - Energy Conversion and Management, 2023 - Elsevier
Ammonia has demonstrated great potential for achieving zero carbon emissions from
internal combustion engines. However, the application of ammonia in engines faces the …

Experimental investigation on the performance of pure ammonia engine based on reactivity controlled turbulent jet ignition

Z Liu, L Zhou, H Wei - Fuel, 2023 - Elsevier
Ammonia-based internal combustion engines (ICEs) produce carbon-free emissions.
However, the application of ammonia in ICEs results in difficult ignition, combustion …

Effect of pre-chamber volume on combustion characteristics of an SI aircraft piston engine fueled with RP3

H Cui, Z Zhao, F Zhang, C Yu, L Wang - Fuel, 2021 - Elsevier
Four-stroke spark ignition (SI) aircraft piston engine is a good choice for small aircraft,
however it has limited applications based on its high operational cost and security risk on …

Computational assessment of the effects of pre-chamber and piston geometries on the combustion characteristics of an optical pre-chamber engine

X Liu, ME Marquez, S Sanal, M Silva, AS AlRamadan… - Fuel, 2023 - Elsevier
Pre-chamber combustion (PCC) has the potential to extend the lean-burn limit in spark-
ignition engines, which can promote engine efficiency and relieve the concern of emissions …

Hydrogen pre-chamber combustion at lean-burn conditions on a heavy-duty diesel engine: A computational study

X Liu, H Aljabri, M Silva, AS AlRamadan, MB Houidi… - Fuel, 2023 - Elsevier
The combustion of hydrogen generates almost no harmful emissions except for nitric oxides
(NO x), which could be effectively eliminated under lean-burn conditions. In particular, the …

Optical diagnostics on the pre-chamber jet and main chamber ignition in the active pre-chamber combustion (PCC)

Q Tang, R Sampath, ME Marquez, P Sharma… - Combustion and …, 2021 - Elsevier
We studied the relationship between pre-chamber jet and main chamber ignition in the pre-
chamber combustion (PCC) of an optical engine, fueled with methane and equipped with an …

Fundamental insights on ignition and combustion of natural gas in an active fueled pre-chamber spark-ignition system

R Rajasegar, Y Niki, JM García-Oliver, Z Li… - Combustion and …, 2021 - Elsevier
Pre-chamber spark-ignition (PCSI), either fueled or non-fueled, is a leading concept with the
potential to enable diesel-like efficiency in medium-duty (MD) and heavy-duty (HD) natural …

Influence of pre-chamber structure and injection parameters on engine performance and combustion characteristics in a turbulent jet ignition (TJI) engine

J Hua, L Zhou, Q Gao, Z Feng, H Wei - Fuel, 2021 - Elsevier
Turbulent jet ignition (TJI) has been proven to effectively improve the burning rate and
expand the lean-burn limit of gasoline engines. In this work, based on a single-cylinder …

Visualization study on the effects of pre-chamber jet ignition and methane addition on the combustion characteristics of ammonia/air mixtures

X Zhang, J Tian, Z Cui, S Xiong, S Yin, Q Wang… - Fuel, 2023 - Elsevier
As a carbon-free green fuel, ammonia has recently attracted more and more attention.
However, the application of ammonia as an alternative fuel in internal combustion engines is …