Determination of Naval medium speed diesel engine air exhaust emissions amd [sic] validation of a proposed estimation model.

396 Pages·1995·10.7 MB·en_US

by  Mayeaux, Agnes M.

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NAVAlpostgraduate SCHOOL
Mm-rojrv CA 93943-5101

DETERMINATION OF NAVAL MEDIUM SPEED DIESEL ENGINE AIR EXHAUST
EMISSIONS AMD VALIDATION OF A PROPOSED ESTIMATION MODEL
by
M
Agnes Mayeaux
B.S. Ocean Engineering, United States Naval Academy (1986)
Submitted to the Department ofOcean Engineering and Department ofMechanical Engineering in
Partial Fulfillment ofthe Requirements for the Degrees of
NAVAL ENGINEER
and
MASTER OF SCIENCE IN MECHANICAL ENGINEERING
at the
Massachusetts Institute ofTechnology
May 1995
© 1995 AggieMayeauv Allrightsreserved.
Theauthorhereby grantstoMIT, theUnited StatesGovernment and its agenciespermissionto
reproduce andtodistributepublicalypaperandelectronic copiesofthisthesisdocument inwholeorinpart.
Department ofMechanical Engineering
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DUDLEYKNOXLIBRARY
NAVAL POSTGRADUATE SCHOOL
MONTEREY CA 93943-5101
Determination ofNaval Medium Speed Diesel Engine Air Exhaust Emissions and
Validation ofa Proposed Estimation Model
by
Agnes Mae Mayeaux
Submitted to the Department ofOcean Engineering
in Partial Fulfillment ofthe Requirements for the Degrees ofNaval Engineer and
Masters ofScience in Mechanical Engineering
ABSTRACT
Steady state marine diesel engine exhaust emissions are being reviewed by the
Environmental Protection Agency for possible regulation. In anticipation offuture regulation, the
United States Navy is developing appropriate emissions models for naval vessels. Actual
emissions data from a U.S. Navy ship is necessary to provide checkpoints for the models A
procedure for collecting this data from an U.S. Navy ship with medium speed main propulsion
diesels is presented. It is based on similar testing conducted by the U.S. Coast Guard for
measuring patrol boat diesel engine emissions and International Standards Organization
methodology. The primary challenge ofthe experiment design was to minimize interference with
the engineering plant as the assigned ship was concurrently tasked for other operations. Data
gathered allowed calculation ofengine rpm, engine load, exhaust gas flow rate and determination
ofpollutant amounts. The tests were conducted at a series ofpredetermined speeds to reflect an
1 1-Mode duty cycle developed previously for the LSD 41 Class propulsion diesel engines The
results add to a growing data base ofmarine emissions and offer insight into the into the effects of
secondary control factors such as sea conditions, maneuvering and continued reactions in the
stack.
Additional work is included which models an appropriate duty cycle for U.S. Navy high
speed propulsion diesel engines found on the MCM-1 Class Mine Countermeasure Ship The
results indicate that not only are the duty cycles developed fro commercial ship operations
inadequate for modeling ofnaval ship operations, but that the naval duty cycles will vary greatly
by mission.
Thesis Supervisor: Dr. Alan J. Brown
Title: Professor
Department ofOcean Engineering
Thesis Supervisor: Dr Victor W. Wong
Title: Lecturer
Manager, Sloan Automotive Laboratory
Department ofMechanical Engineering

Acknowledgements
On a professional level, there were a large number ofpeople without who's
assistance this thesis could not have been completed. I am not certain I can adequately
cover the extensive roll and apologize to those who deserve much credit but are missed in
the following list. Special thanks to:
My advisors, Captain Alan Brown and Dr. Victor Wong.
Dr. Bentz and Dr. Allen ofthe Coast Guard R&D Center, who shared the woes of
planning and executing the testing ofa LSD-41 Class ship. Also thanks to Doug Griggs
(NSWC, Carderock) and Mike Iacovelli (NAVSSES) for their good humor, advice and
cough drops
Ed Merry, Ed Epperly and the SUPSHIP Portsmouth crew who assisted in
arranging instrumentation for the ship testing.
The entire crew ofthe USS ASHLAND, LSD-48 for their warm hospitality and
A
willing co-operation during sea trials in February of 1995. special acknowledgement to
LT Billie Walden, a dedicated and talented officer who serves as a role-model for all
fortunate enough to sail with her. And a personal note for CDR Mike EQywiak: the next
time we sail together again, I hope the length ofthe boat is only 36 feet.
Thank-you members ofthe Mine Warfare Command in Ingleside, Texas. With
your help and that ofthe crews ofUSS ARDENT, USS WARRIOR and USS
GLADIATOR, I quickly and effortlessly gathered seventy pounds ofraw data from which
to develop the MCM-1 Class operating profile. Tony, your hospitality and insight was
especially appreciated.
LCDR Al Gaiser ofRESUPSHIP, Ingleside provided excellent information
regarding the operation ofand future developments in design ofthe Isotta Fraschini diesel
engine. MM1 Dole, the token Machinist Mate ofthe command, also deserves a round of
applause for his unselfish co-operation
On the personal side, there are numerous names which come to mind. Special
thanks to Tim McCoy and Melissa Smoot, for sanity checks and timely advice. Melissa,
an excellent hostess as always, also performed wonderfully as the most effective gopher I
ever had (just kiddin'). She is a wonderful friend
To Grainne and Theresa for relieving long hours oftedium.
I must mention my constant companions during the writing ofthis work: Matou
and Chicot. While short on conversation, they did help curb the depression ofloneliness.
Conversation was forced onto two unfortunate souls: my sister Alice (better
known as Leroy) and Jennifer. Thank-you for your patience and understanding.
And, ofcourse, Michael...