LIFETIME Final Presentation - Laboratory of Marine Engineering

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Analysis of ageing effect - Typical results Ship: Maersk Livorno (DANAOS) 30% ε∆Pcyl_cmp 25% 20% The ageing ratio is defined as a deviation ratio of the operating parameter 15% value, in a specific engine load condition, to the corresponding value of the 10% 5% sea trial performance curves. 0% 35000 40000 45000 50000 55000 60000 65000 70000 75000 80000 85000 M/E Hours Period1 Period2 Period3 EST EST21 Linear (Period1) Linear (Period2) Linear (Period3) Compression pressure ageing ratio ε and corresponding ageing models 30% 25% 20% 15% 10% 5% ε∆Texh_bTC 20000 18000 16000 14000 12000 10000 8000 6000 4000 2000 TC Hours 0% 0 35000 40000 45000 50000 55000 60000 65000 70000 75000 80000 M/E Hours TC Hours Period1 Period2 Peiod3 Predict Linear (Period1) Linear (Period2) Linear (Peiod3) Exhaust gas temperature before T/C ageing ratio ε and corresponding ageing models Athens, October 8, 2003 Final Presentation
Analysis of ageing effect - Conclusions ♦ Performance degradation significant after 15000 hours ♦ Newly built ships no ageing phenomena for 2 years (min) ♦ Established ageing effects (after 15000 – 20000 hrs) - Exhaust Temperature before T/C - Cylinder compression pressure - Turbocharger speed - Scavenging air pressure. ♦ 5% increase in SFOC AGEING Athens, October 8, 2003 Final Presentation
Page 1 and 2: Introduction and background • Dur
Page 3 and 4: LOW IN FUEL AND EMISSIONS TWO-STROK
Page 5 and 6: Objectives and Methodology LIFETIME
Page 11 and 12: Vessels for shipboard measurement c
Page 13 and 14: Research Centre and Intelligent Eng
Page 15 and 16: Turbocharger test centre Exterior v
Page 17 and 18: Intelligent Engine Performance & Em
Page 19 and 20: Turbine nozzle ring contamination N
Page 21 and 22: Compressor Athens, October 8, 2003
Page 23 and 24: “Shanghai Express” Propulsion P
Page 25 and 26: Comparison of independent power mea
Page 27 and 28: “Shanghai Express” Exhaust gas
Page 29 and 30: “Antwerpen Express” Propulsion
Page 31 and 32: Measuring data acquisition system Z
Page 33 and 34: Analysis of ageing effect The agein
Page 35: Analysis of ageing effect - Data Su
Page 39 and 40: Multi-zone Combustion Model NOx MAP
Page 41 and 42: Engine Performance Modelling Compar
Page 43 and 44: Simulations - 7K98MC engine PARAMET
Page 45 and 46: Simulations - 7K98MC engine Creatio
Page 47 and 48: Possible Types of Correlation • S
Page 49 and 50: LIFETIME Control System Mathematica
Page 51 and 52: LIFETIME observer system (NOx-Box)
Page 53 and 54: LIFETIME observer system (NOx-Box)
Page 55 and 56: Validation of control schemes Devel
Page 57 and 58: Testbed implementation of the contr
Page 59 and 60: Prototype Control Systems Design an
Page 61 and 62: Brake Power per cylinder (kW) Ultra
Page 63 and 64: Conventional Engine Off-line NOx-BO
Page 65 and 66: Prototype Control Systems Initial i
Page 67 and 68: Intelligent Engine Engine Running M
Page 69 and 70: Prototype Control Systems Recalibra
Page 71 and 72: Conventional Engine Off-line NOx_BO
Page 73 and 74: Engine Running Mode software Intell
Page 75 and 76: Ultra-Large Bore Engine On-line NOx
Page 77 and 78: GL Measurements Ultra-Large Bore En
Page 83 and 84: Conventional Engine Off-line NOx-BO
Page 85 and 86: Analysis of Results • Effect of c
Page 87 and 88:
NOx-BOX operation evaluation Analys
Page 89 and 90:
Model-based vs. correlational metho
Page 91 and 92:
60 Model-based vs. correlational me
Page 93 and 94:
“Antwerpen Express” running wit
Page 95 and 96:
Future engine control systems • D
Page 97 and 98:
Future engine control systems • I
Page 99 and 100:
Future engine control systems • T
Page 101 and 102:
Work Progress CONCLUSIONS • Condu
Page 103:
The End Athens, October 8, 2003 Fin
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LIFETIME Final Presentation - Laboratory of Marine Engineering

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