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Title: Development of naval diesel engine duty cycles for air exhaust emission environmental impact analysis. Master's thesis

Abstract

A strategy for testing naval diesel engines for exhaust emissions was developed. A survey of existing international and national standard diesel engine duty cycles was conducted. All were found to be inadequate for testing and certification of engine exhaust emissions from naval diesel powered ships. Naval ship data covering 11,500 hours of engine operation of four U.S. Navy LSD 41 Class amphibious ships was analyzed to develop a 27 point class operating profile. A procedure combining ship hull form characteristics, ship propulsion plant parameters, and ship operating profile was detailed to derive an 11-Mode duty cycle representative for testing LSD 41 Class propulsion diesel engines. A similar procedure was followed for ship service diesel engines. Comparisons with industry accepted duty cycles were conducted using exhaust emission contour plots for the Colt-Pielstick PC-4B diesel engines. Results showed the 11-Mode LSD 41 Class Duty Cycle best predicted ship propulsion engine emissions compared to the 27 point operating profile propeller curve. The procedure was applied to T-AO 187 Class with similar results. The application of civilian industry standards to measure naval diesel ship propulsion engine exhaust emissions was found to be inadequate. Engine exhaust flow chemistry post turbocharger was investigated using the SANDIAmore » Lab computer tool CHEMKIN. Results showed oxidation and reduction reactions within exhaust gases are quenched in the exhaust stack. Since the exhaust stream in the stack is unreactive, emission sampling may be performed where most convenient. A proposed emission measurement scheme for LSD 41 Class ships was presented.« less

Authors:
Publication Date:
Research Org.:
State Univ. of New York, Stony Brook, NY (United States). Coll. of Engineering
OSTI Identifier:
6826965
Alternate Identifier(s):
OSTI ID: 6826965
Report Number(s):
AD-A-283844/9/XAB
CNN: N00123-89-G-0580
Resource Type:
Technical Report
Resource Relation:
Other Information: Master's thesis
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 54 ENVIRONMENTAL SCIENCES; DIESEL ENGINES; AIR POLLUTION MONITORING; ENGINES; HEAT ENGINES; INTERNAL COMBUSTION ENGINES; MONITORING 330102* -- Internal Combustion Engines-- Diesel; 330700 -- Advanced Propulsion Systems-- Emission Control; 540120 -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (1990-)

Citation Formats

Markle, S.P.. Development of naval diesel engine duty cycles for air exhaust emission environmental impact analysis. Master's thesis. United States: N. p., 1994. Web.
Markle, S.P.. Development of naval diesel engine duty cycles for air exhaust emission environmental impact analysis. Master's thesis. United States.
Markle, S.P.. Sun . "Development of naval diesel engine duty cycles for air exhaust emission environmental impact analysis. Master's thesis". United States.
@article{osti_6826965,
title = {Development of naval diesel engine duty cycles for air exhaust emission environmental impact analysis. Master's thesis},
author = {Markle, S.P.},
abstractNote = {A strategy for testing naval diesel engines for exhaust emissions was developed. A survey of existing international and national standard diesel engine duty cycles was conducted. All were found to be inadequate for testing and certification of engine exhaust emissions from naval diesel powered ships. Naval ship data covering 11,500 hours of engine operation of four U.S. Navy LSD 41 Class amphibious ships was analyzed to develop a 27 point class operating profile. A procedure combining ship hull form characteristics, ship propulsion plant parameters, and ship operating profile was detailed to derive an 11-Mode duty cycle representative for testing LSD 41 Class propulsion diesel engines. A similar procedure was followed for ship service diesel engines. Comparisons with industry accepted duty cycles were conducted using exhaust emission contour plots for the Colt-Pielstick PC-4B diesel engines. Results showed the 11-Mode LSD 41 Class Duty Cycle best predicted ship propulsion engine emissions compared to the 27 point operating profile propeller curve. The procedure was applied to T-AO 187 Class with similar results. The application of civilian industry standards to measure naval diesel ship propulsion engine exhaust emissions was found to be inadequate. Engine exhaust flow chemistry post turbocharger was investigated using the SANDIA Lab computer tool CHEMKIN. Results showed oxidation and reduction reactions within exhaust gases are quenched in the exhaust stack. Since the exhaust stream in the stack is unreactive, emission sampling may be performed where most convenient. A proposed emission measurement scheme for LSD 41 Class ships was presented.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun May 01 00:00:00 EDT 1994},
month = {Sun May 01 00:00:00 EDT 1994}
}

Technical Report:
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