Term of Award

Summer 2019

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 of Mechanical Engineering

Committee Chair

Valentin Soloiu

Committee Member 1

Aniruddha Mitra

Committee Member 2

Mosfequr Rahman


The purpose of this research is to investigate the combustion of methyl-oleate and n-butanol in advanced Reactivity Controlled Compression Ignition (RCCI). This novel research uses Noise, Vibration, and Harshness (NVH), analysis of the combustion characteristics and engine operation. The equipment in this research are multi-field microphone for the unknown sound field; the tri-axial accelerometer was placed on the valve cover for the measurement of in-cylinder vibrations and an acoustic array allowed for the measurement of specific noise and vibrations spectrum. Based on the results from the NVH point of view, the combustion in RCCI with methyl-oleate is significantly noisier than Ultra Low Sulfur Diesel (ULSD) in Classical Diesel Combustion (CDC) by as much as 10 (dB). RCCI with methyl-oleate had a vibrations level of as much 4.5 (m/s2) higher than ULSD in CDC in the 200- 2k (Hz) range (combustion). The acoustic array sound levels for methyl-oleate were found 4 (dB) higher than ULSD in CDC.

Research Data and Supplementary Material