Term of Award

Fall 2012

Degree Name

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

Document Type and Release Option

Thesis (restricted to Georgia Southern)

Department

Department of Mechanical Engineering

Committee Chair

Valentin Soloiu

Committee Member 1

Aniruddah Mitra

Committee Member 2

Anoop Desai

Abstract

Diesel engines are widely used all over the United States. Apart from conventional use in transportation, power generation, and agricultural use, they have increasing alternative applications including auxiliary power units, hydraulic hybrids, and electric hybrids. N-Butanol may prove to be an effective tool in efforts to reduce petroleum consumption and lessen the impacting emissions. An experimental investigation performed on a single-cylinder heavy-duty diesel research engine operating at low-speed and, low load is presented in this study. The research is focused on producing a partially premixed combustion by means of an original injection strategy. This strategy is based on introducing an early injection of n-butanol in the intake manifold at the start of the intake stroke, followed by a conventional injection close to the compression top dead center. The results obtained show that NOx and soot emissions can be reduced with a slight reduction in fuel consumption. The measured NOx is near zero, which is well below the current EPA limits for all data points under 4 bar IMEP. On average a 35% reduction in NOx was observed when n-butanol was injected.

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