Optical engine characterization of reference and novel fuels using a small-volume fuel system
department or school: Applied Science, Faculty of
department or school: Mechanical Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Becker, Isaac
issued: 2022-12-22T09:04:56Z
issued: 2022
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: Global climate change drives research and implementation of low-carbon fuels. Engine combustion imaging offers insights to fuel performance and can be conducted early in the fuel development cycle due to relatively low consumption rates compared to those required for steady-state emissions testing. A flexible fueling system is used, implementing a hydraulic media separator for direct injection of up to 260 mL alternative fuel samples at pressures up to 1200 bar into a 2.0L, single-cylinder, optically accessible diesel engine. Optical engine studies provide understanding of injection spray phenomena, ignition delays, heat release rates, and soot propensity with qualitative analysis of reaction zone structure and propagation using high-speed imaging of natural luminosity and OH*-chemiluminescence. A local, three-colour pyrometry probe enables measurement of in-cylinder soot concentration and temperature. Two operating conditions were chosen to investigate various phenomena. The first operating condition is a low load single fuel injection that allows for consideration of injection and ignition behaviour in the mixing controlled combustion regime. The second operating condition uses a pilot and main fuel injection and is representative of a medium load condition using modern diesel injection strategies. Six fuels are characterized: diesel and n-heptane, reference fuels; canola and soybean methyl ester, commercial biodiesels; and graphene-oxide (GO) doped diesel and a blend of upgraded bio-oil (UBO) from fast pyrolysis of pine biomass with diesel, novel fuels. Fuel properties were measured using ASTM standards for energy content, viscosity, elemental analysis, and moisture content. The UBO diesel blend demonstrates a 7% reduction in ignition delay and 25% reduction in in-cylinder soot concentration relative to neat diesel. The addition of 10ppm GO to diesel did not affect fuel performance.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/83472
note: Optical engine characterization of reference and novelfuels using a small-volume fuel systembyIsaac BeckerBS, California Polytechnic State University, 2018A THESIS SUBMITTED IN PARTIAL FULFILLMENTOF THE REQUIREMENTS FOR THE DEGREE OFMaster of Applied ScienceinTHE FACULTY OF GRADUATE AND POSTDOCTORATESTUDIES(Mechanical Engineering)The University of British Columbia(Vancouver)December 2022© Isaac Becker, 2022The following individuals certify that they have read, and recommend to the Fac-ulty of Graduate and Postdoctoral Studies for acceptance, the thesis entitled:Optical engine characterization of reference and novel fuels using asmall-volume fuel systemsubmitted by Isaac Becker in partial fulfillment of the requirements for the degreeof Master of Applied Science in Mechanical Engineering.Examining Committee:Patrick Kirchen, Professor, Mechanical Engineering, UBCSupervisorSteve Rogak, Professor, Mechanical Engineering, UBCSupervisory Committee MemberNaoko Ellis, Professor, Chemical and Biological Engineering, UBCSupervisory Committee MemberiiAbstractGlobal climate change drives research and implementation of low-carbon fuels.Engine combustion imaging offers insights to fuel performance and can be con-ducted early in the fuel development cycle due to relatively low consumption ratescompared to those required for steady-state emissions testing. A flexible fuelingsystem is used, implementing a hydraulic media separator for direct injection of upto 260 mL alternative fuel samples at pressures up to 1200 bar into a 2.0L, single-cylinder, optically accessible diesel engine. Optical engine studies provide un-derstanding of injection spray phenomena, ignition delays, heat release rates, andsoot propensity with qualitative analysis of reaction zone structure and propagationusing high-speed imaging of natural luminosity and OH*-chemiluminescence. Alocal, three-colour pyrometry probe enables measurement of in-cylinder soot con-centration and temperature. Two operating conditions…
has type: Thesis/Dissertation
date issued: 2023-05
is shown at: 10.14288/1.0422785
language: eng
degree discipline: Mechanical Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Kirchen, Patrick
type: Text
identifier URI: http://hdl.handle.net/2429/83472