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How to assure engine propulsion reliabilitySST.2012.5.2‐5: Grant no. 314286E‐guided vessels: The 'autonomous' ship
How to assure engine propulsion reliability
Prof. Dr. Karsten WEHNER; Dr. Wolfgang BUSSE
Hochschule Wismar – University of applied sciences
Department of Maritime Studies
http://www.unmanned‐ship.org
MUNIN workshop at SMM Hamburg 2014‐09‐10
How to assure engine propulsion reliability2
Unmanned (autonomous) operation of ship engine plant required:
• automation of technical processes
• Optimization of maintenance
Optimization of maintenance required:
• Risk analysis of ship engine plant(extended RPN – method for non redundant systems)
• Information about technical condition
Introduction
How to assure engine propulsion reliability3
Technical Diagnosis:
• Detection of (incipient) disorders,
• Prevention of serious damage
Methods of Technical Diagnosis on two stroke ship diesel engines:
• Non uniformity of revolution
• Cylinder Pressure and Ultrasonic Sound Analysis
• Analysis of tribological System
• Performance analysis / torque measurement
• Bearing monitoring
Introduction
How to assure engine propulsion reliability4
Methods of Technical Diagnosis on two stroke ship diesel engines:
• Non uniformity of revolution
• Cylinder pressure and ultrasonic sound analysis
• Analysis of Tribological System
Introduction
How to assure engine propulsion reliability5
Revolution Uniformity Analysis
Cylinder pressure ‐‐‐
tangential force -30000,0
-20000,0
-10000,0
0,0
10000,0
20000,0
30000,0
40000,0
50000,0
1 10 19 28 37 46 55 64 73 82 91 100 109 118 127 136 145 154 163 172 181 190 199 208 217 226 235 244 253 262 271 280 289 298 307 316 325 334 343 352
How to assure engine propulsion reliability6
Revolution Uniformity Analysis
Cylinder pressure ‐‐‐
tangential force -20000,0
-10000,0
0,0
10000,0
20000,0
30000,0
40000,0
50000,0
0 50 100 150 200 250 300 350
F
°CA
How to assure engine propulsion reliability7
Revolution Uniformity Analysis
Cylinder pressure ‐‐‐
tangential force 25000,0
30000,0
35000,0
40000,0
45000,0
50000,0
0 30 60 90 120 150 180 210 240 270 300 330 360°CA
F
How to assure engine propulsion reliability8
Revolution Uniformity Analysis
Deg 356 357 358 359 000 001 002 003 004 005 ……..
TDC
Time measurement between °CA
Time measurement between TDC
How to assure engine propulsion reliability9
Revolution Uniformity Analysis
How to assure engine propulsion reliability10
Revolution Uniformity Analysis
How to assure engine propulsion reliability11
Cylinder Pressure and Ultrasonic Sound Analysis
How to assure engine propulsion reliability12
Cylinder Pressure and Ultrasonic Sound Analysis
How to assure engine propulsion reliability13
Cylinder Pressure and Ultrasonic Sound Analysis
How to assure engine propulsion reliability14
Cylinder Pressure and Ultrasonic Sound Analysis
How to assure engine propulsion reliability15
Cylinder Pressure and Ultrasonic Sound Analysis
How to assure engine propulsion reliability16
Analysis of Tribological System
How to assure engine propulsion reliability17
Analysis of Tribological System
How to assure engine propulsion reliability18
Analysis of Tribological System
How to assure engine propulsion reliability19
Analysis of Tribological System
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26.08.2007 31.08.2007 05.09.2007 10.09.2007 15.09.2007 20.09.2007
Volta
geVa
lues
ofP
isto
n R
ings
[V]
Date
Cyl. 5
Ring 1 ERing 2 ERing 3 ERing 4 E
How to assure engine propulsion reliability20
Analysis of Tribological System
15:00 18:00 21:00 00:00 03:00 06:00 09:00 12:0090
100
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tem
pera
ture
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"Norasia Enterprise" Linertemp. from 28-Oct-2006 to 29-Oct-2006
How to assure engine propulsion reliability21
Analysis of Tribological System
How to assure engine propulsion reliability22
Analysis of Tribological System
How to assure engine propulsion reliability23