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MAN B&W 17.03 Electric Driven Moment Compensator If it <strong>is</strong> decided not to use chain driven moment compensators and, furthermore, not to prepare the main engine for compensators to be fitted later, another solution can be used, if annoying vibrations should occur: An electrically driven moment compensator synchron<strong>is</strong>ed to the correct phase relative to the external force or moment can neutral<strong>is</strong>e the excitation. <strong>Th<strong>is</strong></strong> type of compensator needs an extra seating fitted, preferably, in the steering gear room where vibratory deflections are largest and the effect of the compensator will therefore be greatest. The electrically driven compensator will not give r<strong>is</strong>e to d<strong>is</strong>torting stresses in the hull, but it <strong>is</strong> more expensive than the engine-mounted compensators. It does, however, offer several advantages over the engine mounted solutions: • When placed in the steering gear room, the compensator <strong>is</strong> not as sensitive to the positioning of the node as the compensators 2) and 3) mentioned in Section 7.02. 178 57 45-6.0 Fig. 17.03.01: MAN Diesel 1st or 2nd order electrically driven moment compensator, separately mounted, option: 4 31 605. Page of 2 • The dec<strong>is</strong>ion whether or not to install compensators can be taken at a much later stage of a project, since no special version of the engine structure has to be ordered for the installation. • No preparation for a later installation nor an extra chain drive for the compensator on the fore end of the engine <strong>is</strong> required. <strong>Th<strong>is</strong></strong> saves the cost of such preparation, often left unused. • Compensators could be retrofit, even on ships in service, and also be applied to engines with a higher number of cylinders than <strong>is</strong> normally considered relevant, if found necessary. • The compensator only needs to be active at speeds critical for the hull girder vibration. Thus, it may be activated or deactivated at specified speeds automatically or manually. • Combinations with and without moment compensators are not required in torsional and axial vibration calculations, since the electrically driven moment compensator <strong>is</strong> not part of the mass-elastic system of the crankshaft. Furthermore, by using the compensator as a vibration exciter a ship’s vibration pattern can easily be identified without having the engine running, e.g. on newbuildings at an advanced stage of construction. If it <strong>is</strong> verified that a ship does not need the compensator, it can be removed and reused on another ship. It <strong>is</strong> a condition for the application of the rotating force moment compensator that no annoying longitudinal hull girder vibration modes are excited. Based on our present knowledge, and confirmed by actual vibration measurements onboard a ship, we do not expect such problems. MAN B&W MC/MC-C/ME/ME-B/ME�C/ME�GI engines 198 42 22�1.4 MAN Diesel
MAN B&W 17.03 �� Fig. 17.03.02: Compensation of 2nd order vertical external moments �� Page 2 of 2 178 27 10�4.1 MAN B&W MC/MC-C/ME/ME-B/ME�C/ME�GI engines 198 42 22�1.3 MAN Diesel ��
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MAN B&W S65ME-C8 Project Guide Elec
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MAN B&W Engine Design .............
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MAN B&W Contents MAN B&W S65ME-C8 C
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MAN B&W Contents MAN B&W S65ME-C8 C
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MAN B&W Index A C D MAN B&W S65ME-C
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MAN B&W Index H I L MAN B&W S65ME-C
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MAN B&W MAN Diesel Engine Design 1
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MAN B&W 1.01 • Control system wit
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MAN B&W 1.03 Power and Speed with F
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MAN B&W Diesel A/S 1.04 Compar<stro
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MAN B&W 1.06 ME Engine Description
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MAN B&W 1.06 Connecting Rod The con
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MAN B&W 1.06 Exhaust Valve The exha
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MAN B&W Engine Layout and Load Diag
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MAN B&W 2.01 placed on the light ru
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MAN B&W 2.02 Constant ship speed li
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MAN B&W 2.04 Engine Layout and Load
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MAN B&W 2.04 Line 6: Propeller curv
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MAN B&W 2.04 ��
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MAN B&W 2.04 Page 7 of Example 2: S
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MAN B&W 2.04 Page 9 of Example 4: S
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MAN B&W 2.04 Example 6: Engines run
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MAN B&W 2.06 Specific Fuel Oil Cons
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MAN B&W 2.08 SFOC reference conditi
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MAN B&W Diesel A/S 2.09 SFOC Calcul
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MAN B&W Diesel A/S 2.10 SFOC calcul
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MAN B&W 2.11 Fuel Consumption at an
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MAN B&W MAN Diesel Turbocharger Cho
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MAN B&W 3.02 Exhaust Gas By�pass
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MAN B&W 3.03 NO x Reduction by SCR
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MAN B&W MAN Diesel Electricity Prod
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MAN B&W 4.01 MAN Diesel Page 2 of 6
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MAN B&W 4.01 PTO/RCF Side mounted g
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MAN B&W 4.01 Yard deliveries are: 1
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MAN B&W 4.03 Engine preparations fo
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MAN B&W 4.03 Crankshaft gear lubric
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MAN B&W 4.03 Air cooler Pole wheel
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MAN B&W 4.04 PTO type: BW II/GCR Po
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MAN B&W 4.04 Auxiliary Propulsion S
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MAN Diesel 4.06 L16/24 GenSet Data
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MAN Diesel 4.08 L23/30H GenSet Data
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MAN B&W MAN Diesel Installation Asp
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MAN B&W 5.02 Space Requirements <st
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MAN B&W 5.03 Crane beam for turboch
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MAN B&W Diesel A/S 5.04 Engine room
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MAN B&W 5.04 MAN B&W Double�Jib C
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MAN B&W Diesel A/S 5.06 Engine and
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MAN B&W Diesel A/S 5.06 S65ME-C 3,5
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MAN B&W Diesel A/S 5.08 Mass of Wat
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MAN B&W Diesel A/S 5.09 6,244 (AD)
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MAN B&W 5.10 Counterflanges Referen
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MAN B&W 5.11 Engine Seating and Hol
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MAN B&W 5.12 Engine Seating Profile
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MAN B&W 5.13 Engine Top Bracing The
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MAN B&W 5.14 Mechanical Top Bracing
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MAN B&W 5.16 Components for Engine
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MAN B&W 5.16 EICU (Engine Interface
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MAN B&W 5.17 Shaftline Earthing Dev
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MAN B&W 5.17 Suppliers ��
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MAN B&W 6.01 Calculation of L<stron
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MAN B&W Diesel A/S 6.03 Page 1 of 5
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MAN B&W Diesel A/S 6.03 Pumps Coole
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MAN B&W Diesel A/S 6.03 Capacities
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MAN B&W Diesel A/S 6.04 The derated
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MAN B&W Diesel A/S 6.04 Page 4 of 1
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MAN B&W 6.04 ��
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MAN B&W 6.04 Exhaust Gas Amount and
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MAN B&W 6.04 Page 10 of 12 ∆M amb
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MAN B&W Diesel A/S 6.04 Final calcu
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MAN B&W 7.01 Pressuris</str
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MAN B&W 7.01 The HCU has a leakage
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MAN B&W 7.03 Fuel Oil Pipes and Dra
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MAN B&W 7.04 Heat Loss in Piping Pi
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MAN B&W 7.05 Components for fuel oi
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MAN B&W Diesel A/S 7.05 Fuel oil fi
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MAN B&W 7.06 ��
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MAN B&W 8.01 Lubricating and Coolin
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MAN B&W 8.02 Hydraulic power supply
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MAN B&W 8.03 From system oil Fig. 8
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MAN B&W 8.05 Components for Lubrica
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MAN B&W 8.05 Lubricating oil outlet
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MAN B&W 8.06 Note: When calculating
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MAN B&W 8.08 Hydraulic oil back�f
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MAN B&W 8.09 Hydraulic control oil
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MAN B&W 8.09 Hydraulic Control Oil
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MAN B&W 9.01 Cylinder Lubricating O
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MAN B&W 9.02 Due to the sulphur dep
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MAN B&W 9.02 ��
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MAN B&W 9.02 ��
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MAN B&W 10.01 Stuffing Box Drain Oi
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MAN B&W 11.01 Central Cooling Water
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MAN B&W 11.03 Components for Centra
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MAN B&W MAN Diesel Seawater Cooling
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MAN B&W 12.02 Seawater Cooling Syst
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MAN B&W 12.04 Components for Seawat
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MAN B&W 12.06 Jacket Cooling Water
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MAN B&W 12.07 Deaerating tank �
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Page 257 and 258: MAN B&W 15.04 Exhaust gas silencer
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Page 284 and 285: MAN B&W 17.05 ��
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Page 295 and 296: MAN B&W 18.03 CoCoS�EDS Sensor L<
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Page 299 and 300: MAN B&W 18.04 Alarms for UMS - Clas
Page 301 and 302: MAN B&W 18.04 Slow down for UMS - C
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Page 311: MAN B&W 18.07 Identification of Ins
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Page 317 and 318: MAN B&W 19.02 Specification for pai
Page 319 and 320: MAN B&W 19.03 A3 + B3 (option 4 12
Page 321 and 322: MAN B&W Dispatch P
Page 323 and 324: MAN B&W 19.06 List
Page 325 and 326: MAN B&W 19.07 Exhaust valve, <stron
Page 327 and 328: MAN B&W 19.08 Table B: Page 2 of 2
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MAN B&W MAN Diesel Project Suppport
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MAN B&W 20.02 Computeris</s
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MAN B&W 20.03 We base our first quo
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MAN B&W 20.04 Main Section 939 Engi
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MAN B&W 20.04 Engine production and
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MAN B&W Appendix A Symbols for Pipi
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MAN B&W Appendix A No. Symbol Symbo
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