Term of Award

Summer 2018

Degree Name

Master of Science in Applied Engineering (M.S.A.E.)

Document Type and Release Option

Thesis (restricted to Georgia Southern)

Copyright Statement / License for Reuse

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Department

Department of Mechanical Engineering

Committee Chair

Valentin Soloiu

Committee Member 1

Gustavo Molina

Committee Member 2

Marcel Ilie

Abstract

Alternative fuels are increasingly researched for their use in internal combustion engines. New fuels are studied for their effect on exhaust emissions which are of great environmental concern today. In this investigation, a single cylinder, supercharged diesel engine with exhaust gas circulation was used to investigate combustion and emissions of methyl oleate and n-butanol to conduct Reactivity Controlled Compression Ignition (RCCI) in comparison to those of an ultra-low sulfur diesel (ULSD#2) RCCI and a single injection reference. Methyl oleate has been studied to identify the use of a single fatty acid methyl ester (FAME) as a surrogate for biodiesel in engine operation. The study was conducted using an engine instrumented with piezoelectric pressure transducers and high-speed data acquisition equipment and tested using a hydraulic brake dynamometer for load control. Data from both the blends and ULSD#2 was collected when the engine was steadily run at 1500 RPM and 4 to 6 bar IMEP. Emissions were recorded using an AVL FTIR and Micro Soot Sensor system. NOx and soot were decreased simultaneously in RCCI mode by several orders as compared to those of conventional single injection classical combustion, which required eliminating non-homogenous rich zones and lower combustion temperatures.

Research Data and Supplementary Material

No

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