GASEOUS EMISSIONS AND COMBUSTION EFFICIENCY ANALYSIS OF HYDROGEN-DIESEL DUAL FUEL ENGINE UNDER FUEL-LEAN CONDITION | Science Publications

American Journal of Applied Sciences

Prateep Chaisermtawan¹  Sathaporn Chuepeng¹  Sompop Jarungthammachote¹  Thanya Kiatiwat¹ 

关键词: Equilibrium Analysis;    Hydrogen;    Dual Fuel;    Diesel Engine;    Emissions;    Combustion Efficiency;   

DOI  :  10.3844/ajassp.2012.1813.1817

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

Exhaust gas emissions from diesel engine combustion using alternative fuel may change in their quantities that can affect exhaust gas after-treatment devices and environmental ambient. This study presents theoretical analysis of combustion generated emissions and efficiency of hydrogen-diesel duel fuel in fuel-lean condition. A chemical equilibrium method by minimizing Gibbs free energy is employed to estimate exhaust gas products from diesel and hydrogen-diesel mode combustion. The combustion products, e.g., unburned hydrocarbons (CH₄), hydrogen (H₂), carbon dioxide (CO₂), carbon monoxide (CO) are comparatively investigated, based upon similar specific energy input. Subsequently, the obtained combustible products (CH₄, H₂ and CO) are used to calculate combustion efficiency, based upon chemical energy left in waste exhaust gases. The main findings are associated with the reduction in CO₂ corresponding to the increase in combustion efficiency in hydrogen-diesel combustion mode, depending on relative air-to-fuel ratios. Meanwhile, the CH₄, H₂ and CO contents in the flue gas increase in the operating conditions used

【 授权许可】

Unknown