September 10, 2025SAE technical papers on CD-ROM/SAE technical paper series

Enhancing Ammonia Combustion in Heavy-Duty SI Engines: A 3D-CFD Study on Pre-Chamber Ignition, Methane Addition, and Spark Timing Optimization

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Optimal performance in heavy-duty engines is achieved with a mixture of 80% ammonia and 20% methane, while utilizing a pre-chamber ignition system.
3D-CFD simulations revealed that adjusting spark timing from 14° to 50° BTDC significantly impacts performance and emissions.
The active pre-chamber spark-ignition system enhances combustion efficiency by creating multiple ignition points within the combustion chamber.
The study aligns with global efforts towards zero-carbon emissions by investigating eco-friendly fuels like ammonia.

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Implication

This research demonstrates improved combustion and lower emissions in heavy-duty engines, indicating the role of spark timing and pre-chamber systems.

Cite This Study

Palomba et al. (2025) studied this question.

synapsesocial.com/papers/68c23cf6b210217d6478b5f9 https://doi.org/10.4271/2025-24-0006

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Implication

This research demonstrates improved combustion and lower emissions in heavy-duty engines, indicating the role of spark timing and pre-chamber systems.

Enhancing Ammonia Combustion in Heavy-Duty SI Engines: A 3D-CFD Study on Pre-Chamber Ignition, Methane Addition, and Spark Timing Optimization

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Discussion

Implication

Cite This Study

Enhancing Ammonia Combustion in Heavy-Duty SI Engines: A 3D-CFD Study on Pre-Chamber Ignition, Methane Addition, and Spark Timing Optimization

Key Points

Discussion

Implication

Cite This Study

Also Consider

Also Consider