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MAN B&W 9.02 MAN B&W Alpha Cylinder Lubrication System The MAN B&W Alpha cylinder lubrication system, see Figs. 9.02.02a and 9.02.02b, <strong>is</strong> designed to supply cylinder oil intermittently, e.g. every four engine revolutions with electronically controlled timing and dosage at a defined position. The cylinder lubricating oil <strong>is</strong> pumped from the cylinder oil storage tank to the service tank, the size of which depends on the owner’s and the yard’s requirements, � it <strong>is</strong> normally dimensioned for minimum two days’ cylinder lubricating oil consumption. Cylinder lubricating oil <strong>is</strong> fed to the Alpha cylinder lubrication system by gravity from the service tank. The storage tank and the service tank may alternatively be one and the same tank. The oil fed to the injectors <strong>is</strong> pressur<strong>is</strong>ed by means of the Alpha Lubricator which <strong>is</strong> placed on the HCU and equipped with small multi�p<strong>is</strong>ton pumps. The oil pipes fitted on the engine <strong>is</strong> shown in Fig. 9.02.04. The whole system <strong>is</strong> controlled by the Cylinder Control Unit (CCU) which controls the injection frequency on the bas<strong>is</strong> of the engine�speed signal given by the tacho signal and the fuel index. Prior to start-up, the cylinders can be pre�lubricated and, during the running�in period, the operator can choose to increase the lubricating oil feed rate to a max. setting of 200%. The MAN B&W Alpha Cylinder Lubricator <strong>is</strong> preferably to be controlled in accordance with the Alpha ACC (Adaptive Cylinder oil Control) feed rate system. The yard supply should be according to the items shown in Fig. 9.02.02a within the broken line. With regard to the filter and the small box, plese see Fig. 9.02.05. Alpha Adaptive Cylinder oil Control (Alpha ACC) Page of 6 It <strong>is</strong> a well�known fact that the actual need for cylinder oil quantity varies with the operational conditions such as load and fuel oil quality. Consequently, in order to perform the optimal lubrication – cost�effectively as well as technically – the cylinder lubricating oil dosage should follow such operational variations accordingly. The Alpha lubricating system offers the possibility of saving a considerable amount of cylinder lubricating oil per year and, at the same time, to obtain a safer and more predictable cylinder condition. Working Principle The basic feed rate control should be adjusted in relation to the actual fuel quality and amount being burnt at any given time. The sulphur percentage <strong>is</strong> a good indicator in relation to wear, and an oil dosage proportional to the sulphur level will give the best overall cylinder condition. The following two criteria determine the control: • The cylinder oil dosage shall be proportional to the sulphur percentage in the fuel • The cylinder oil dosage shall be proportional to the engine load (i.e. the amount of fuel entering the cylinders). The implementation of the above two criteria will lead to an optimal cylinder oil dosage, proportional to the amount of sulphur entering the cylinders. Safe and very lubricating�economical control after running-in <strong>is</strong> obtained with a basic setting according to the formula: Basic lubricating oil setting = 0.26 g/kWh x S% with a minimum setting of 0.60 g/kWh, i.e. the setting should be kept constant from about 2.3% sulphur and downwards. MAN B&W ME/ME�C/ME-B/ME�GI engines 198 38 89�0.7 MAN Diesel
MAN B&W 9.02 Due to the sulphur dependency, the average cylinder oil dosages rely on the sulphur d<strong>is</strong>tribution in worldwide fuel bunkers. Based on deliveries all over the world, the resulting yearly specific cylinder oil dosage <strong>is</strong> close to 0.7 g/kWh. �� Fig 9.02.01: Cylinder lubricating oil dosage with Alpha ACC at all loads (BN 70 cylinder oil) Page 2 of 6 178 59 49�4.0 MAN B&W ME/ME�C/ME-B/ME�GI engines 198 38 89�0.7 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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Page 157 and 158: MAN B&W 6.04 Exhaust Gas Amount and
Page 159 and 160: MAN B&W 6.04 Page 10 of 12 ∆M amb
Page 161: MAN B&W Diesel A/S 6.04 Final calcu
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Page 167 and 168: MAN B&W 7.01 The HCU has a leakage
Page 169 and 170: MAN B&W 7.03 Fuel Oil Pipes and Dra
Page 171 and 172: MAN B&W 7.04 Heat Loss in Piping Pi
Page 173 and 174: MAN B&W 7.05 Components for fuel oi
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Page 181 and 182: MAN B&W 8.01 Lubricating and Coolin
Page 183 and 184: MAN B&W 8.02 Hydraulic power supply
Page 185 and 186: MAN B&W 8.03 From system oil Fig. 8
Page 187 and 188: MAN B&W 8.05 Components for Lubrica
Page 189 and 190: MAN B&W 8.05 Lubricating oil outlet
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Page 193 and 194: MAN B&W 8.08 Hydraulic oil back�f
Page 195 and 196: MAN B&W 8.09 Hydraulic control oil
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Page 211: MAN B&W 10.01 Stuffing Box Drain Oi
Page 215 and 216: MAN B&W 11.01 Central Cooling Water
Page 217 and 218: MAN B&W 11.03 Components for Centra
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Page 222 and 223: MAN B&W 12.02 Seawater Cooling Syst
Page 224 and 225: MAN B&W 12.04 Components for Seawat
Page 226 and 227: MAN B&W 12.06 Jacket Cooling Water
Page 228 and 229: MAN B&W 12.07 Deaerating tank �
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MAN B&W 15.02 Cleaning Systems �
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MAN B&W 15.03 Exhaust Gas System fo
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MAN B&W 15.04 Exhaust gas silencer
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MAN B&W 15.05 Measuring Back Pressu
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MAN B&W 15.06 Forces and Moments at
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MAN B&W 15.07 Diameter of Exhaust G
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MAN B&W 16.01 Engine Control System
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MAN B&W 16.01 Engine Control System
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MAN B&W 16.01 Mechanical�hydrauli
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MAN B&W 16.01 Auxiliary equipment s
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MAN B&W MAN Diesel Vibration Aspect
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MAN B&W 17.02 2nd Order Moments on
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MAN B&W 17.03 Electric Driven Momen
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MAN B&W Power Related Unbalance <st
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MAN B&W 17.05 ��
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MAN B&W 17.06 Axial Vibrations When
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MAN B&W Diesel A/S 17.07 External F
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MAN B&W 18.01 Monitoring Systems an
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MAN B&W 18.02 PMI System, Type On
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MAN B&W 18.03 CoCoS�EDS Sensor L<
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MAN B&W 18.04 General outline of th
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MAN B&W 18.04 Alarms for UMS - Clas
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MAN B&W 18.04 Slow down for UMS - C
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MAN B&W 18.05 Local Instruments Pag
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MAN B&W 18.05 Local instruments Rem
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MAN B&W 18.06 Fig. 18.06.01a: Oil m
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MAN B&W 18.06 Bearing Temperature M
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MAN B&W 18.07 Identification of Ins
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MAN B&W 19.01 Disp
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MAN B&W 19.02 Specification for pai
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MAN B&W 19.03 A3 + B3 (option 4 12
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MAN B&W Dispatch P
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MAN B&W 19.06 List
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MAN B&W 19.07 Exhaust valve, <stron
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MAN B&W 19.08 Table B: Page 2 of 2
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MAN B&W Diesel A/S 19.10 Li
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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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