Version 1
: Received: 10 May 2023 / Approved: 11 May 2023 / Online: 11 May 2023 (09:09:14 CEST)
How to cite:
Monney, N.; Kurz, L.; Gillioz, S.; Nellen, C. I.C. Engine Conversion for Hydrogen Combustion and Near Zero NOx Emissions. Preprints2023, 2023050834. https://doi.org/10.20944/preprints202305.0834.v1
Monney, N.; Kurz, L.; Gillioz, S.; Nellen, C. I.C. Engine Conversion for Hydrogen Combustion and Near Zero NOx Emissions. Preprints 2023, 2023050834. https://doi.org/10.20944/preprints202305.0834.v1
Monney, N.; Kurz, L.; Gillioz, S.; Nellen, C. I.C. Engine Conversion for Hydrogen Combustion and Near Zero NOx Emissions. Preprints2023, 2023050834. https://doi.org/10.20944/preprints202305.0834.v1
APA Style
Monney, N., Kurz, L., Gillioz, S., & Nellen, C. (2023). I.C. Engine Conversion for Hydrogen Combustion and Near Zero NOx Emissions. Preprints. https://doi.org/10.20944/preprints202305.0834.v1
Chicago/Turabian Style
Monney, N., Simon Gillioz and Christian Nellen. 2023 "I.C. Engine Conversion for Hydrogen Combustion and Near Zero NOx Emissions" Preprints. https://doi.org/10.20944/preprints202305.0834.v1
Abstract
The purpose of this project was to demonstrate the potential of converting an existing internal combustion engine for hydrogen operation at relatively low cost and to optimize the combustion process for ultra-low NOx emissions. The conversion has been carried out on a 450cc naturally aspirated single cylinder engine. The first baseline measurements and setup have shown lower NOx emissions than the baseline gasoline engine (without catalytic converter) for similar power output and engine efficiency. Further optimization of the combustion process allowed to achieve Euro VI and (latest European Commission proposal) Euro VII heavy-duty NOx limits without exhaust gas aftertreatment system (EATS) in steady state conditions. The concept is very promising and the knowledge gained should allow for further optimization to achieve near zero NOx emissions at high engine efficiency and power output with supercharging. It should also allow an efficient conversion of other engine types for different applications. In particular, a project with the aim to convert a heavy duty 6 cylinder engine intended for public transport buses has started. It follows a feasibility study which has shown the competitiveness of the hydrogen engine for this application.
Keywords
H2ICE; Hydrogen; Ultra-low NOx; Engine conversion
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
