Effects of Substitution Ratio on the Emission Characteristics of a Dual-Fuel Engine Fueled with Pilot Diesel Fuel and Methanol

Abstract:

Substitution ratio is an important parameter influencing on the performance of dual-fuel engine. In order to study the effects of substitution ratio on the emission characteristics of diesel/ methanol dual-fuel engine, a 6-cylinder turbocharged diesel engine was converted into a dual-fuel engine fueled with pilot diesel fuel and methanol. Methanol was injected into the intake pipe and ignited by pilot diesel fuel. Experiments were performed at a constant speed of 1400 r/min, and at three different engine loads of 40%, 60% and 100%. The experimental results indicate that CO and HC emissions of dual-fuel mode both increase significantly with the increase of substitution ratio, and are higher than those of diesel mode. Compared to diesel mode, dual-fuel mode generates lower NOx and smoke emissions. In addition, as substitution ratio increases, NOx and smoke emissions are decreased.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 504-507
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.504
• Online since: March 2015
• Authors: Ya Chong Shen*, Chun Hua Zhang, Gang Li, Jia Wang Zhou
• Keywords: Dual-Fuel Engine, Emissions, Methanol, Pilot Diesel Fuel, Substitution Ratio

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