Author: A. Saylam
Document type: Published research article
Journal: International Journal of Petrochemistry & Natural Gas
Year: 2022
Volume: 1
Issue: 1
Pages: 04–08
Due to climate change and health issues, more restrictive legislation concerning pollutant emissions from diesel engines is being introduced worldwide. A novel approach to reduce the pollutant emissions of CO, NOx, and unburned hydrocarbons (HC) in diesel engines is proposed. The approach is based on fuelling diesel engines with blends of selective additive mixtures and conventional commercial diesel fuel.
To examine the feasibility of this approach, blends of an additive mixture and a diesel fuel surrogate composed of n-dodecane and m-xylene were numerically investigated using a homogeneous multi-zone reactor approach and detailed chemical kinetics. The study covered a wide range of air–fuel ratios, AFR = 9.8–29.4, and engine speeds from 1000 to 2000 rpm.
The employed additive mixture considerably reduced CO and HC emissions, up to 60%, especially under rich conditions at AFR = 9.8. The results also showed generally slight NOx reduction and a decrease in produced engine power for the investigated blending ratios.
The reduction of NOx emissions may be further supported by operating the engine at lower compression ratios while using the additive mixture. The proposed methodology needs experimental validation and should be coupled with other emission-reduction technologies.
PDF: diesel-engine-pollutant-emissions.pdf
Saylam, A. (2022). Methodology to reduce diesel engine pollutant emissions. International Journal of Petrochemistry & Natural Gas, 1(1), 04–08.