Study of H2 and NH3 mixtures in a gasoline-fueled engine

2024-01-4288

To be published on 11/05/2024

Event
Energy & Propulsion Conference & Exhibition
Authors Abstract
Content
The combustion of hydrogen (H2) as a fuel is attractive due to its clean combustion or combustion-enhancing properties when used as a supplement to other fuels. However, the challenge of using H2 as a fuel for transportation applications is the difficulty of onboard storage. Cracking onboard stored ammonia (NH3) into H2 can also improve combustion performance and emissions in mobile applications fuelled with zero and carbon-neutral fuels. However, the reforming process is not always 100 % efficient which can lead to the presence of NH3 in the combustion process. The presence of NH3 can influence engine performance, combustion and emissions. Therefore, this experimental study reports the effect of H2 and H2/NH3/N2 fuel blends added to gasoline in a dual-fuel operation under both stoichiometric (λ=1.0) and lean-burn (λ>1.0) operating conditions in a spark ignition (SI) engine. In this study, gasoline was used as the main fuel, with the H2 and NH3 blends studied having energy substitution ratios ranging from 0% to 23%. The results showed that the use of H2 and NH3/H2 mixtures reduced carbon-based emissions. However, there was an increase in nitrogen-based emissions compared to gasoline with increased H2 and NH3 content.
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Citation
Yavuz, M., Wu, M., Cova-Bonillo, A., Brinklow, G. et al., "Study of H2 and NH3 mixtures in a gasoline-fueled engine," SAE Technical Paper 2024-01-4288, 2024, .
Additional Details
Publisher
Published
To be published on Nov 5, 2024
Product Code
2024-01-4288
Content Type
Technical Paper
Language
English