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Ammonia marine engine design for enhanced efficiency and reduced greenhouse gas emissions

Engineering and Technology

Ammonia marine engine design for enhanced efficiency and reduced greenhouse gas emissions

X. Zhou, T. Li, et al.

This groundbreaking study by Xinyi Zhou, Tie Li, Run Chen, Yijie Wei, Xinran Wang, Ning Wang, Shiyan Li, Min Kuang, and Wenming Yang unveils an innovative in-cylinder reforming gas recirculation (IRGR) method to significantly boost thermal efficiency and cut emissions in ammonia combustion engines. Experience a remarkable 15.8% increase in efficiency and up to 94% reduction in greenhouse gases compared to traditional diesel engines!

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Playback language: English
Abstract
This study introduces in-cylinder reforming gas recirculation (IRGR) to enhance the thermal efficiency and reduce emissions in pilot-diesel-ignition ammonia combustion engines. One cylinder operates rich, partially decomposing ammonia into hydrogen. This hydrogen-enriched exhaust is recirculated, combining the benefits of hydrogen-enriched combustion and exhaust gas recirculation. Results show a 15.8% increase in indicated thermal efficiency and significant reductions in unburned NH3, N2O, and greenhouse gases compared to traditional ammonia engines, even achieving 94% GHG reduction compared to pure diesel.
Publisher
Nature Communications
Published On
Mar 07, 2024
Authors
Xinyi Zhou, Tie Li, Run Chen, Yijie Wei, Xinran Wang, Ning Wang, Shiyan Li, Min Kuang, Wenming Yang
Tags
in-cylinder reforming
gas recirculation
thermal efficiency
ammonia combustion
emission reduction
hydrogen enrichment
greenhouse gases

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