Emission reductions of Air Pollutants from a Heavy-duty Diesel Engine Mixed with Various Amounts of H2/O2

Received: August 9, 2011
Revised: November 12, 2011
Accepted: November 12, 2011
Download Citation: RIS|BibTeX|https://doi.org/10.4209/aaqr.2011.08.0122  

Cite this article:
Wang, H.K., Cheng, C.Y., Lin, Y.C. and Chen, K.S. (2012). Emission reductions of Air Pollutants from a Heavy-duty Diesel Engine Mixed with Various Amounts of H2/O2. Aerosol Air Qual. Res. 12: 133-140. https://doi.org/10.4209/aaqr.2011.08.0122

ABSTRACT

This study investigated emission reductions of polycyclic aromatic hydrocarbons (PAHs), hydrocarbons (HCs), carbon monoxide (CO), carbon dioxide (CO₂), particulate matters (PM), and nitrogen oxides (NO_x) from a heavy-duty diesel engine (HDDE) at one low load steady-state condition, 24.5% of the maximum load (40 km/h), using premium diesel fuel (PDF) mixed with various amounts of H₂/O₂. Measurements showed that the mixed fuel of HO60 reduced the brake specific fuel consumption (BSFC) most, by an amount of 12.6%, as compared with PDF. Meanwhile, with HO60, the emission of air pollutant was deceased by 32.3% for PAHs, 9.5% for HCs, 7.2% for CO, 4.4% for CO₂, and 19.3% for PM, but the emission of NO_x was increased by 9.9%.

Keywords: Hydrogen; Emission; Diesel engine; Engine Performance; Air Pollutants