An optical method for measuring injection timing in diesel engines, using a single port
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Authors
Wyman, Sandra J.
Subjects
Hydroprocessed Renewable Diesel
HRD
Alternative Fuel Blends
F-76
Diesel Engine Combustion
Diesel Engine Injection Timing
Cetane Number
Bulk Modulus
Laser Fluorescence Measurement
Pyrromethene 597
Diesel Engine Combustion Timing
Laser-Induced Fluorescence
Fiber Optic
Sapphire Optic
Spectroscopy
HRD
Alternative Fuel Blends
F-76
Diesel Engine Combustion
Diesel Engine Injection Timing
Cetane Number
Bulk Modulus
Laser Fluorescence Measurement
Pyrromethene 597
Diesel Engine Combustion Timing
Laser-Induced Fluorescence
Fiber Optic
Sapphire Optic
Spectroscopy
Advisors
Millsaps, Knox T.
Seivwright, Douglas L.
Date of Issue
2014-09
Date
Sep-14
Publisher
Monterey, California: Naval Postgraduate School
Language
Abstract
This thesis is the design of a laser-induced fluorescence technique for use in the characterization of the fuel injection delay of various fuels, due to differences in bulk modulus. The technique is designed to work with an operational diesel engine having readily accessible glow-plug ports. The optical adapter designed for use through the glow-plug port is used as both the transmitting port for the excitation signal and the receiving port for the fluorescence signal. The prototype system was installed on a Detroit Diesel 3–53 two-stroke diesel engine. The beginning of the injection cycle is measured by a proximity probe set to detect injector compression to the point where the injector chamber is sealed. The actual entry of fuel into the cylinder is measured using laser induced fluorescence of an organic laser dye seeded fuel, excited by a 532-nm laser. The time/crank angle delay from the start of fuel compression to fuel entry into the cylinder can then be correlated to bulk modulus and cetane number. The combustion event can also be detected using the same optics and its timing correlated with known fuel properties.
Type
Thesis
Description
Series/Report No
Department
Mechanical and Aerospace Engineering (MAE)
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.