A Numerical Study of the Effect of Hydrogen Fuelled Turbulent Jet Ignition Engine

Pielecha, Ireneusz; Merkisz, Jerzy; Urbański, Patryk; Gallas, Dawid; Andrych-Zalewska, Monika

doi:10.4271/2022-01-1007

Cited by 2 publications

References 83 publications

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Numerical Study on the Design of a Passive Pre-Chamber for a Heavy-Duty Hydrogen Combustion Engine

Maas,

Bekdemir,

Somers

2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">Lean-burn hydrogen internal combustion engines are a good option for future transportation solutions since they do not emit carbon-dioxide and unburned hydro-carbons, and the emissions of nitric-oxides (NOx) can be kept low. However, under lean-burn conditions the combustion duration increases, and the combustion stability decreases, leading to a reduced thermal efficiency. Turbulent jet ignition (TJI) can be used to extend the lean-burn limit, while decreasing the combustion duration and improving combustion stability. The objective of this paper is to investigate the feasibility of a passive pre-chamber TJI system on a heavy-duty hydrogen engine under lean-burn conditions using CFD modelling. The studied concept is mono-fuel, port-fuel injected, and spark ignited in the pre-chamber. The overall design of the pre-chamber is discussed and the effect of design parameters on the engine performance are studied. From this analysis, it was found that the volume of the pre-chamber and the area of the pre-chamber holes have major impact on the performance of the pre-chamber. Next, the difference between a regular spark-ignited combustion and a TJI system are investigated at a medium load point. The combustion duration is shortened significantly using a passive pre-chamber. However, the heat transfer loss through the walls increased significantly due to prolonged higher temperatures and higher turbulence near the combustion chamber walls. Finally, the air-fuel ratio is increased to study its effect on the heat transfer loss and NOx emissions.</div></div>

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Numerical Study on the Design of a Passive Pre-Chamber for a Heavy-Duty Hydrogen Combustion Engine

Maas,

Bekdemir,

Somers

2024

SAE Technical Paper Series

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Application of alternative drive systems in modern special-purpose rail vehicles

Gallas

Stobnicki

Jakuszko

et al. 2023

WJTE

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In response to the market demand for modern special-purpose rail vehicles, an overview of the rolling stock available on the European and world markets was developed, along with an analysis of the scope of works they performed. The need for new alternative forms of propulsion in line with the development directions, taking into account EU and national environmental goals, was discussed. The paper presents a design of a proprietary modern special-purpose vehicle with an alternative drive. It discusses it compared to other special-purpose vehicles regarding their parameters and the viability of different drive systems, including hydrogen fuel cells.

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A Numerical Study of the Effect of Hydrogen Fuelled Turbulent Jet Ignition Engine

Cited by 2 publications

References 83 publications

Numerical Study on the Design of a Passive Pre-Chamber for a Heavy-Duty Hydrogen Combustion Engine

Numerical Study on the Design of a Passive Pre-Chamber for a Heavy-Duty Hydrogen Combustion Engine

Application of alternative drive systems in modern special-purpose rail vehicles

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