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Studying Influence of Natural Gas-Diesel Blend Ratio on Emissions Characteristics of Dual Fuel Engine using numerical simulation

Publish Year: 1403
Type: Conference paper
Language: English
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CEMCONF06_033

Index date: 28 October 2024

Studying Influence of Natural Gas-Diesel Blend Ratio on Emissions Characteristics of Dual Fuel Engine using numerical simulation abstract

This article studied Reactivity Controlled Compression Ignition (RCCI) engine performance and emissions in comparison to conventional diesel engine.For this purpose, the OM-355 diesel engine was simulated using computational fluid dynamics. Various blend ratios of natural gas and diesel were usedin this simulation. The simulation results were validated by the experimental results of the engine. The results of this research shown that from theemissions aspect, the 70% NG mix is a desirable fuel ratio for full load RCCI OM-355 engine in 1600 rpm operation. At this fuel ratio, the carbonmonoxide levels are at an acceptable level, however the unburned hydrocarbons are twice as their optimum amount at 50% NG, but even so this amountis 65% less than conventional diesel engine. By increasing NG from 0% to 50%, soot and nitrogen oxides are reduced and beyond 50%, the soot emissionrate becomes smoothly, but the nitrogen oxide emission rate curve becomes steeper, and at 70% NG, 72% reduction in soot emissions and an 83% reductionin nitrogen oxide emissions are observed.

Studying Influence of Natural Gas-Diesel Blend Ratio on Emissions Characteristics of Dual Fuel Engine using numerical simulation Keywords:

Studying Influence of Natural Gas-Diesel Blend Ratio on Emissions Characteristics of Dual Fuel Engine using numerical simulation authors

A Mirmohammadi

Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran

S.S Hoseini

Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran