Impact of short-chain alcohols on carbonyl emissions in dual-fuel compression ignition engines
This study investigated the impact of methanol and ethanol on carbonyl emissions from a single-cylinder diesel engine operating under dual-fuel mode. Fourteen carbonyl compounds were investigated, with formaldehyde and acetaldehyde dominating the emissions. Moderate amounts of alcohol did not signif...
| Autores: | , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Recursos: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/43981 |
| Acesso em linha: | https://doi.org/10.1016/j.fuel.2025.134916 https://hdl.handle.net/10578/43981 |
| Access Level: | acceso abierto |
| Palavra-chave: | Carbonyls emission Dual-fuel CI combustion Light alcohols |
| Resumo: | This study investigated the impact of methanol and ethanol on carbonyl emissions from a single-cylinder diesel engine operating under dual-fuel mode. Fourteen carbonyl compounds were investigated, with formaldehyde and acetaldehyde dominating the emissions. Moderate amounts of alcohol did not significantly affect specific carbonyl emissions. However, higher ethanol concentrations increased carbonyl emissions, especially when using ethanol and biodiesel. Specific reactivity, a measure of the potential impact of pollutants on atmospheric ozone formation, was quite similar for all fueling conditions tested, despite some of these conditions notably increased total carbonyl emissions. Thus, contrary to expectations, dual-fuel mode had a minimal effect on specific reactivity, even at high alcohol substitution ratios. This result suggests that using light alcohols in dual-fuel CI engines does not increase the atmospheric reactivity of exhaust gases, and their use in decarbonizing heavy-duty CI engines seems viable, even considering future emission standards for unregulated emissions like carbonyls. |
|---|