Dual-Fueling Concepts: a Comparison of Methane and Propane as Primary Fuels with Biodiesel and Ultra-Low Sulfur Diesel as Separate Pilot Fuels

Author

Nicholas Thane Shoemaker

Issuing Body

Mississippi State University

Advisor

Srinivasan, Kalyan K.

Committee Member

Krishnan, Sundar R.

Committee Member

Mago, Pedro

Date of Degree

12-9-2011

Document Type

Graduate Thesis - Open Access

Major

Mechanical Engineering

Degree Name

Master of Science (M.S.)

College

James Worth Bagley College of Engineering

Department

Department of Mechanical Engineering

Abstract

The goal of this thesis is to examine dualueling concepts using two different types of primary fuel, methane and propane; as well as two different pilot fuels, ultra-low sulfur diesel (ULSD) and biodiesel (B100). Experiments were performed using a 1.9 liter, turbocharged, 4 cylinder diesel engine at 1800 rev/min with ULSD and B100 being injected as a pilot fuel directly into the combustion chamber, at different brake mean effective pressures (BMEP), and percent energy substitutions of propane and methane. Brake thermal efficiency (BTE) and emissions (NOx, THC, CO, CO2, O2 and smoke) were also measured and analyzed. Maximum PES was limited by misfire at 2.5 bar, 5.0 bar, 7.5 bar, BMEP for all cases and knock at 10 bar BMEP for both B100-propane and ULSD-propane. In general dual fueling was shown to be beneficial for lowering NOx, CO2, and smoke emissions along with, in some cases, showing improvements in BTE.

URI

https://hdl.handle.net/11668/20398

Recommended Citation

Shoemaker, Nicholas Thane, "Dual-Fueling Concepts: a Comparison of Methane and Propane as Primary Fuels with Biodiesel and Ultra-Low Sulfur Diesel as Separate Pilot Fuels" (2011). Theses and Dissertations. 1585.
https://scholarsjunction.msstate.edu/td/1585