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Volume 12, No. 1, February 2012, Pages 133-140 PDF(334 KB)  
doi: 10.4209/aaqr.2011.08.0122   

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

Hsin-Kai Wang, Chia-Yu Cheng, Yuan-Chung Lin, Kang-Shin Chen

Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan

 

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 (NOx) 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 NOx was increased by 9.9%.

 

 

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

 

 

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