Accession Number : ADA567436


Title :   The Comparison of Hydrotreated Vegetable Oils With Respect to Petroleum Derived Fuels and the Effects of Transient Plasma Ignition in a Compression-Ignition Engine


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Carr, M A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a567436.pdf


Report Date : Sep 2012


Pagination or Media Count : 117


Abstract : This thesis presents the results of an experimental study of the combustion characteristics of algae and camelina derived biofuels as well as the effects of Transient Plasma Ignition in a Compression-Ignition Engine. Testing was conducted for Hydrotreated Renewable Diesel, algae, and benchmarked against F-76 and Diesel #2 fuels as well as Hydrotreated Renewable Jet, camelina, benchmarked against JP-5 across a matrix of constant engine speeds and engine loads in a Detroit Diesel 3-53 legacy engine. A heat release rate analysis and a cycle analysis were performed at each matrix point. The algae and camelina fuels averaged 1.4 Crank Angle Degrees earlier ignition, 2 Crank Angle Degrees longer burn duration, 2.25 atmospheres decrease in Peak Pressure, 1.4 Crank Angle Degrees delay in Angle of Peak Pressure, 0.5% increase in Indicated Mean Effective Pressure, and 6% decrease in Break Specific Fuel Consumption than their petroleum counterpart. A comparison between Diesel #2 at idle was performed between Transient Plasma Ignition Assisted Compression-Ignition and conventional Compression-Ignition. Transient Plasma Ignition averaged a Crank Angle Degree earlier start of combustion, faster pressure rise, but lower Peak Pressures than Compression-Ignition. However, due to failure of the plasma electrode it was not ascertained if this phenomenon is repeatable.


Descriptors :   *BIOMASS , *PETROLEUM PRODUCTS , *PLASMAS(PHYSICS) , *VEGETABLE OILS , ALGAE , COMBUSTION , COMPARISON , CRANKSHAFTS , DIESEL ENGINES , ELECTRODES , ENGINES , FAILURE , FUEL CONSUMPTION , FUELS , HEAT , IGNITION , PEAK VALUES , PISTON ENGINES , PRESSURE , PRESSURE GRADIENTS , RATES , RECIPROCATING ENGINES , RELEASE , THESES , TRANSIENTS


Subject Categories : Biochemistry
      Miscellaneous Materials
      Fuels
      Reciprocating and Rotating Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE