MAN B&W L70ME-C8.2-TII

Transcription

1 MAN B&W L70ME-C8.2-TII Project Guide Electronically Controlled Two-stroke Engines This Project Guide is intended to provide the information necessary for the layout of a marine propulsion plant. The information is to be considered as preliminary. It is intended for the project stage only and subject to modification in the interest of technical progress. The Project Guide provides the general technical data available at the date of issue. It should be noted that all figures, values, measurements or information about performance stated in this project guide are for guidance only and should not be used for detailed design purposes or as a substitute for specific drawings and instructions prepared for such purposes. Data updates Data not finally calculated at the time of issue is marked Available on request. Such data may be made available at a later date, however, for a specific project the data can be requested. Pages and table entries marked Not applicable represent an option, function or selection which is not valid. The latest, most current version of the individual Project Guide sections are available on the Internet at: Two-Stroke. Extent of Delivery The final and binding design and outlines are to be supplied by our licensee, the engine maker, see Chapter 20 of this Project Guide. In order to facilitate negotiations between the yard, the engine maker and the customer, a set of Extent of Delivery forms is available in which the basic and the optional executions are specified. Electronic versions This Project Guide book and the Extent of Delivery forms are available on a DVD and can also be found on the Internet at: Two-Stroke, where they can be downloaded. 1st Edition February 2014 MAN B&W L70ME-C8.2-TII

2 All data provided in this document is non-binding. This data serves informational purposes only and is especially not guaranteed in any way. English text shall prevail. & Turbo Teglholmsgade 41 DK-2450 Copenhagen SV Denmark Telephone Telefax Copyright 2014 & Turbo, branch of & Turbo SE, Germany, registered with the Danish Commerce and Companies Agency under CVR Nr.: , (herein referred to as & Turbo ). This document is the product and property of & Turbo and is protected by applicable copyright laws. Subject to modification in the interest of technical progress. Reproduction permitted provided source is given ppr Feb 2014 MAN B&W L70ME-C8.2-TII

3 MAN B&W Contents Engine Design... 1 Engine Layout and Load Diagrams, SFOC... 2 Turbocharger Selection & Exhaust Gas By-pass... 3 Electricity Production... 4 Installation Aspects... 5 List of Capacities: Pumps, Coolers & Exhaust Gas... 6 Fuel... 7 Lubricating Oil... 8 Cylinder Lubrication... 9 Piston Rod Stuffing Box Drain Oil Central Cooling Water System Seawater Cooling System Starting and Control Air Scavenge Air Exhaust Gas Engine Control System Vibration Aspects Monitoring Systems and Instrumentation Dispatch Pattern, Testing, Spares and Tools Project Support and Documentation Appendix... A

4

5 MAN B&W Contents Chapter Section 1 Engine Design The fuel optimised ME Tier II engine Tier II fuel optimization Engine type designation Power, speed, SFOC Engine power range and fuel oil consumption Performance curves ME Engine description Engine cross section Engine Layout and Load Diagrams, SFOC Engine layout and load diagrams Propeller diameter and pitch, influence on optimum propeller speed Layout diagram sizes Engine layout and load diagrams, ME/ME-C/ME-B/-GI engines Diagram for actual project Specific fuel oil consumption, ME versus MC engines SFOC for high efficiency turbochargers SFOC reference conditions and guarantee Examples of graphic calculation of SFOC SFOC calculations (80%-85%) SFOC calculations, example Fuel consumption at an arbitrary load Turbocharger Selection & Exhaust Gas Bypass Turbocharger selection Exhaust gas bypass Emission control Electricity Production Electricity production Designation of PTO PTO/RCF Space requirements for side mounted PTO/RCF Engine preparations for PTO PTO/BW GCR Waste Heat Recovery Systems (WHRS) WHRS generator output WHR element and safety valve L16/24-TII GenSet data L21/31TII GenSet data L23/30H-TII GenSet data L27/38-TII GenSet data L28/32H-TII GenSet data MAN B&W L70ME-C8.2-TII

6 MAN B&W Contents Chapter Section 5 Installation Aspects Space requirements and overhaul heights Space requirement Crane beam for overhaul of turbochargers Crane beam for turbochargers Engine room crane Overhaul with Double-Jib crane Double-Jib crane Engine outline, galleries and pipe connections Engine and gallery outline Centre of gravity Water and oil in engine Engine pipe connections Counterflanges Counterflanges, Connection D Counterflanges, Connection E Engine seating and holding down bolts Epoxy chocks arrangement Engine seating profile Engine top bracing Mechanical top bracing Hydraulic top bracing arrangement Components for Engine Control System Shaftline earthing device MAN Alpha Controllable Pitch (CP) propeller Hydraulic Power Unit for MAN Alpha CP propeller MAN Alphatronic 2000 Propulsion Control System List of Capacities: Pumps, Coolers & Exhaust Gas Calculation of capacities List of capacities and cooling water systems List of capacities, S70ME-C Auxiliary system capacities for derated engines Pump capacities, pressures and flow velocities Example 1, Pumps and Cooler Capacity Freshwater generator Jacket cooling water temperature control Example 2, Fresh Water Production Calculation of exhaust gas amount and temperature Diagram for change of exhaust gas amount Exhaust gas correction formula Example 3, Expected Exhaust Gas MAN B&W L70ME-C8.2-TII

7 MAN B&W Contents Chapter Section 7 Fuel Pressurised fuel oil system Fuel oil system Fuel oils Fuel oil pipes and drain pipes Fuel oil pipe insulation Fuel oil pipe heat tracing Components for fuel oil system Components for fuel oil system, venting box Water in fuel emulsification Lubricating Oil Lubricating and cooling oil system Hydraulic Power Supply unit Hydraulic Power Supply unit and lubricating oil pipes Lubricating oil pipes for turbochargers Lubricating oil consumption, centrifuges and list of lubricating oils Components for lube oil system Flushing of lubricating oil components and piping system Lubricating oil outlet Lubricating oil tank Crankcase venting and bedplate drain pipes Engine and tank venting to the outside air Hydraulic oil back-flushing Separate system for hydraulic control unit Hydraulic control oil system Cylinder Lubrication Cylinder lubricating oil system List of cylinder oils MAN B&W Alpha cylinder lubrication system Alpha Adaptive Cylinder Oil Control (Alpha ACC) Cylinder oil pipe heating Cylinder lubricating oil pipes Small heating box with filter, suggestion for Piston Rod Stuffing Box Drain Oil Stuffing box drain oil system Central Cooling Water System Central cooling Central cooling water system Components for central cooling water system MAN B&W L70ME-C8.2-TII

8 MAN B&W Contents Chapter Section 12 Seawater Cooling Seawater systems Seawater cooling system Cooling water pipes Components for seawater cooling system Jacket cooling water system Jacket cooling water pipes Components for jacket cooling water system Deaerating tank Temperature at start of engine Starting and Control Air Starting and control air systems Components for starting air system Starting and control air pipes Electric motor for turning gear Scavenge Air Scavenge air system Auxiliary blowers Control of the auxiliary blowers Scavenge air pipes Electric motor for auxiliary blower Scavenge air cooler cleaning system Air cooler cleaning unit Scavenge air box drain system Fire extinguishing system for scavenge air space Fire extinguishing pipes in scavenge air space Exhaust Gas Exhaust gas system Exhaust gas pipes Cleaning systems, water Soft blast cleaning systems Exhaust gas system for main engine Components of the exhaust gas system Exhaust gas silencer Calculation of exhaust gas back-pressure Forces and moments at turbocharger Diameter of exhaust gas pipe Engine Control System Engine Control System ME Engine Control System layout Mechanical-hydraulic system with HPS Engine Control System interface to surrounding systems Pneumatic manoeuvring diagram MAN B&W L70ME-C8.2-TII

9 MAN B&W Contents Chapter Section 17 Vibration Aspects Vibration aspects nd order moments on 4, 5 and 6-cylinder engines st order moments on 4-cylinder engines Electrically driven moment compensator Power Related Unbalance (PRU) Guide force moments Guide force moments, data Vibration limits valid for single order harmonics Axial vibrations Critical running External forces and moments in layout point Monitoring Systems and Instrumentation Monitoring systems and instrumentation PMI Auto-tuning system CoCoS-EDS systems Alarm - slow down and shut down system Class and & Turbo requirements Local instruments Other alarm functions Bearing monitoring systems Control devices Identification of instruments Dispatch Pattern, Testing, Spares and Tools Dispatch pattern, testing, spares and tools Specification for painting of main engine Dispatch pattern Dispatch pattern, list of masses and dimensions Shop test List of spare parts, unrestricted service Additional spares Wearing parts Large spare parts, dimensions and masses List of standard tools for maintenance Tool panels Project Support and Documentation Project support and documentation Installation data application Extent of Delivery Installation documentation A Appendix Symbols for piping A MAN B&W L70ME-C8.2-TII

10 MAN B&W Index Subject Section Subject Section 1st order moments on 4-cylinder engines nd order moment compensators nd order moments on 4, 5 and 6-cylinder engines A ACU, Auxiliary Control Unit Additional spares Air cooler cleaning pipes Air cooler cleaning unit Air spring, exhaust valve Alarm - slow down and shut down system Alarm system Alarms for UMS Class and & Turbo requirements Alpha ACC, Alpha Adaptive Cylinder Oil Control Alpha ACC, basic and minimum setting with Alpha ACC, specific minimum dosage with Alpha Adaptive Cylinder Oil Control (Alpha ACC) Alpha CP propeller, Hydraulic Power Unit for Arctic running condition Auto Pump Overboard System Auxiliary blower , Auxiliary blower control Auxiliary blower, electric motor for Auxiliary blower, operation panel for Auxiliary blowers, emergency running Auxiliary Control Unit (ACU) Auxiliary equipment system Auxiliary Propulsion System/Take Home System Auxiliary system capacities for derated engines Axial vibration damper Axial vibrations B Back-flushing, hydraulic oil Balancing 1st order moments Balancing other forces and moments Basic items and Options, EoD Bearing condition monitoring Bearing monitoring systems Bearing Temperature Monitoring system (BTM) Bearing Wear Monitoring system (BWM) Bedplate Bedplate drain pipes Boiler, exhaust gas BWIII/RCF units, extent of delivery for C Cabinet for EICU, Engine Control System Layout with Calculation of capacities Calculation of exhaust data for derated engine Calculation of exhaust gas amount and temperature Calculation of exhaust gas back-pressure Calculation of list of capacities for derated engine Capacities of the engine, calculation of Capacities, calculation of CCU, Cylinder Control Unit CEAS (Computerised Engine Application System) application, the Central cooler Central cooling Central cooling system, advantages of Central cooling system, disadvantages of Central cooling water pumps Central cooling water system Central cooling water thermostatic valve Centre of gravity Centrifuges, fuel oil Class and & Turbo requirements Class and & Turbo requirements, alarms, slow and shut down Classes A and B, dispatch pattern Cleaning systems, water Cleanliness of the hydraulic control oil CoCoS-EDS Full version CoCoS-EDS ME basic CoCoS-EDS sensor list CoCoS-EDS systems Combined turbines, steam and power Common Control Cabinet, Engine Control System Layout with Compensator solutions, 2nd order moments Compensators (2nd order moments), preparation for Components for central cooling water system Components for Engine Control System Components for fuel oil system Components for fuel oil system, venting box Components for jacket cooling water system Components for lube oil system Components for seawater cooling system Components for starting air system Components of the exhaust gas system Concept of the ME engine MAN B&W L70ME-C8.2

11 MAN B&W Index Subject Section Subject Section Condition monitoring system CoCoS-EDS Connecting rod Constant ship speed lines Consumption, lubricating oil Continuous service rating (S) Control devices Control network, for ECS Control of the auxiliary blowers Cooler heat dissipations Cooler, central cooling Cooler, jacket water , Cooler, lubricating oil , Cooler, scavenge air , Cooling water pipes Cooling water systems, list of capacities and Cooling water temperature, recommended Copenhagen Standard Extent of Delivery Counterflanges Counterflanges, Connection D Counterflanges, Connection E Crane beam for overhaul of air cooler Crane beam for overhaul of turbochargers Crane beam for turbochargers Crankcase venting and bedplate drain pipes Crankshaft Critical running Cross section, engine Crosshead Cylinder Control Unit (CCU) Cylinder cover Cylinder frame Cylinder liner Cylinder lubricating oil pipes Cylinder lubricating oil system Cylinder lubricating system with dual service tanks Cylinder Lubrication System, MAN B&W Alpha Cylinder oil feed rate, dosage Cylinder oil pipe heating Cylinder oils D Damper, axial vibration Damper, torsional vibration Data sheet for propeller Deaerating tank Delivery test Delivery test, minimum Designation of PTO Diagram for actual project Diagram for change of exhaust gas amount Diagrams of manoeuvring system Diameter of exhaust gas pipe Dimensions and masses of tools Dimensions and masses, large spare parts Dispatch pattern Dispatch pattern, list of masses and dimensions Dispatch pattern, testing, spares and tools DMG/CFE Generators DMG/CFE units, extent of delivery for Documentation, engine production Documentation, engine room-relevant Documentation, Engine Selection Guides Documentation, engine-relevant Documentation, Extent of Delivery Documentation, installation-relevant Documentation, Project Guides Documentation, symbols for piping...a Documentation, tools Double-Jib crane Drain box for fuel oil leakage alarm Drain from water mist catcher Drain of clean fuel oil from HCU, pumps, pipes Drain of contaminated fuel etc Drain oil system, stuffing box Drain pipes, Fuel oil and Drain pipes, scavenge air space Drains, bedplate E Earthing device, shaftline ECS installation in the engine control room ECS, Engine Control System ECU, Engine Control Unit EIAPP certificate EICU, Engine Interface Control Unit Electric motor for auxiliary blower Electric motor for turning gear Electrical system, general outline Electrically driven HPS, mechanical-hydraulic system with Electrically driven moment compensator Electricity production Emergency Running Condition Emission control Emission limits, IMO Nox Emulsification, Water In Fuel (WIF) Engine and gallery outline Engine and tank venting to the outside air Engine configurations related to SFOC Engine control room console MAN B&W L70ME-C8.2

12 MAN B&W Index Subject Section Subject Section Engine Control System interface to surrounding systems Engine Control System layout Engine Control System ME Engine Control System, components for Engine Control Unit (ECU) Engine cross section Engine design and IMO regulation compliance Engine Interface Control Unit (EICU) Engine layout (heavy propeller) Engine layout and load diagrams Engine layout and load diagrams, ME/ME-C/ME-B/-GI engines Engine load diagram Engine margin Engine masses and centre of gravity Engine outline Engine outline, galleries and pipe connections Engine pipe connections , 5.09 Engine power Engine power range and fuel oil consumption Engine preparations for PTO Engine room crane Engine running points, propulsion Engine seating and holding down bolts Engine seating profile Engine Selection Guides Engine space requirements Engine top bracing Engine type designation EoD (Extent of Delivery) Epoxy chocks arrangement Example 1, Pumps and Cooler Capacity Example 2, Fresh Water Production Example 3, Expected Exhaust Gas Examples of graphic calculation of SFOC Exhaust data for derated engine, calculation of Exhaust gas amount and temperature Exhaust gas back pressure, calculation of Exhaust gas boiler Exhaust gas bypass Exhaust gas by-pass, climate conditions and Exhaust gas compensator after turbocharger Exhaust gas correction formula Exhaust gas data Exhaust gas data at specified MCR (ISO) Exhaust gas data, calculation of Exhaust gas pipes Exhaust gas pipes, diameter of Exhaust gas pipes, mass flow at various velocities Exhaust gas piping system for main engine Exhaust gas receiver with variable by-pass Exhaust gas silencer Exhaust gas system , Exhaust gas system for main engine Exhaust gas velocity Exhaust gas, mass density of Exhaust turbocharger Exhaust valve Exhaust valve air spring pipes Expansion tank volume, jacket cooling water Expansion tank, jacket water system Extended load diagram for speed derated engines Extent of Delivery External forces and moments in layout point External moments, calculation of External unbalanced moments Extreme ambient conditions F Filter, fuel oil Fire extinguishing pipes in scavenge air space Fire extinguishing system for scavenge air space Flow meter, fuel oil Flow velocities Flushing of lube oil system Flushing of lubricating oil components and piping system Flushing of the fuel oil system Forces and moments at turbocharger Fouled hull Frame box Fresh water treatment Freshwater generator , Freshwater production for derated engine, calculation of Fuel considerations Fuel consumption at an arbitrary load Fuel oil centrifuges Fuel oil circulating pumps Fuel oil consumption Fuel oil filter Fuel oil flow meter Fuel oil flow velocity and viscosity Fuel oil heater Fuel oil leakage alarm, drain box Fuel oil pipe heat tracing Fuel oil pipe insulation Fuel oil pipes and drain pipes Fuel oil pressure booster MAN B&W L70ME-C8.2

13 MAN B&W Index Subject Section Fuel oil supply pumps Fuel oil system Fuel oil system components Fuel oil system, flushing of Fuel oil venting box Fuel oils Fuel valves Full WHRS steam and power turbines combined G Gallery arrangement Gallery outline , 5.06 Generator step-up gear and flexible coupling Governor tests, etc Graphic calculation of SFOC, examples Guide force moments Guide force moments, data Guiding heavy fuel oil specification H HCU, Hydraulic Cylinder Unit Heat loss in piping Heat radiation and air consumption Heat tracing, fuel oil pipe Heater, fuel oil Heating of fuel drain pipes Heating, cylinder oil pipe Heavy fuel oil (HFO) Heavy fuel oil specification, guiding Heavy propeller, engine layout Holding down bolts, engine seating and HPS configurations HPS unit types HPS unit, engine driven, and lubricating oil pipes HPS, Hydraulic Power Supply H-type guide force moment Hydraulic control oil fine filter / purifier, off-line Hydraulic control oil system Hydraulic control unit, separate system for Hydraulic Cylinder Unit, HCU Hydraulic oil back-flushing Hydraulic Power Supply Hydraulic Power Supply (HPS) Hydraulic Power Supply unit Hydraulic Power Supply unit and lubricating oil pipes Hydraulic Power Unit for MAN Alpha CP propeller Hydraulic top bracing Hydraulic top bracing arrangement Subject Section I Identification of instruments IMO & CARB SOx limitations, lubrication under IMO NOx emission limits Indicator cock Influence on the optimum propeller speed Installation data application Installation documentation Instrumentation, monitoring systems and Instruments, identification Insulation, fuel oil pipe J Jacket cooling water pipes Jacket cooling water system Jacket cooling water temperature control Jacket water cooler , Jacket water cooling pump , Jacket water preheater Jacket water system Jacket water thermostatic valve Jacket water warming-up time L L16/24-TII GenSet data L21/31TII GenSet data L23/30H-TII GenSet data L27/38-TII GenSet data L28/32H-TII GenSet data Large spare parts, dimensions and masses Layout diagram sizes Limits for continuous operation, operating curves Liner Wall Monitoring system (LWM) List of capacities and cooling water systems List of capacities for derated engine, calculation of List of capacities, L70ME-C List of cylinder oils List of lubricating oils List of spare parts, unrestricted service List of standard tools for maintenance Load diagram, examples of the use of Local instruments Local Operating Panel (LOP) LOP, Local Operating Panel Low load operation, limits for Low load, SFOC Lube oil system, flushing of Lubricating and cooling oil system Lubricating oil centrifuges MAN B&W L70ME-C8.2

14 MAN B&W Index Subject Section Subject Section Lubricating oil consumption, centrifuges and list of lubricating oils Lubricating oil cooler , Lubricating oil data Lubricating oil full flow filter Lubricating oil outlet Lubricating oil pipes for turbochargers Lubricating oil pipes, Hydraulic Power Supply unit and Lubricating oil pump Lubricating oil tank Lubricating oil temperature control valve Lubricating oils, list of Lubrication of turbochargers Lubricator control system M Main bearing Main Operating Panel (MOP) MAN Alpha Controllable Pitch (CP) propeller MAN Alphatronic 2000 Propulsion Control System MAN B&W Alpha Cylinder Lubrication MAN B&W Alpha cylinder lubrication system MAN B&W Alpha Cylinder Lubrication, wiring diagram MAN B&W Alpha Cylinder Lubricators on engine Manoeuvring diagram, pneumatic Marine diesel oil Mass of tools and panels, total Mass of water and oil Masses and dimensions, list of, for dispatch pattern ME advantages ME Engine description Measuring Back Pressure, exhaust Mechanical top bracing , 5.14 Mechanical-hydraulic system with HPS Mechanically driven HPS, mechanical-hydraulic system with Moment compensators (2nd order), basic design regarding Moment compensators (2nd order), determine the need Monitoring systems and instrumentation MOP, Main Operating Panel N Nodes and Compensators Normal running conditions NOx reduction NOx reduction methods O Oil mist detector Oil, masses of Operating conditions, lubricating oil tank Operating curves and limits for continuous operation Operation, recommendation for Optimum propeller speed, influence on the Other alarm functions Outline, engine Overcritical running Overhaul of engine, space requirements Overhaul with Double-Jib crane Overload operation, limits for P Painting of main engine Painting specification, for engine Part load SFOC curve, example Part load, SFOC Performance curves Pipe connections, engine , 5.09 Pipes, air cooler cleaning Pipes, bedplate drain Pipes, cooling water Pipes, exhaust gas Pipes, exhaust valve air spring Pipes, fire extinguishing for scavenge air space Pipes, jacket water cooling Pipes, scavenge air Pipes, starting air Pipes, turbocharger lubricating oil Piping arrangements Piping, symbols for...a Piston Piston rod PMI Auto-tuning system PMI-DAU Pneumatic manoeuvring diagram Power management system Power Related Unbalance (PRU) Power supply, for ECS Power Take Off (PTO) Power Take Off/Gear Constant Ratio (PTO/GCR) Power Turbine Generator (PTG) Power, speed, SFOC Preheater, jacket water Preheating of diesel engine Pressure losses across components, exhaust MAN B&W L70ME-C8.2

15 MAN B&W Index Subject Section Subject Section Pressure losses and coefficients of resistance, exhaust pipes Pressure losses in pipes, exhaust Pressurised fuel oil system Project Guides Project support and documentation Propeller clearance Propeller curve Propeller design point Propeller diameter and pitch, influence on optimum propeller speed Propeller, data sheet Propulsion and engine running points Propulsion control station on the main bridge Propulsion Control System, MAN Alphatronic PTG, Power Turbine Generator PTO, engine preparations for PTO/BW GCR PTO/RCF Pump capacities, pressures and flow velocities Pump pressures Pump, jacket water cooling , Pump, seawater cooling Pumps, central cooling Pumps, fuel oil circulating Pumps, fuel oil supply Pumps, jacket water cooling Pumps, lubricating oil Pumps, seawater cooling R RCF gear, lubricating oil system for Recommendation for operation Reduction station, control and safety air Reduction valve, turbocharger cleaning etc Remote control system Remote indication sensors, alarm, slow down and Remote sensors Renk PSC clutch for auxilliary propulsion systems Reversing S Safety system Safety system design and supply, basic Scavenge air box drain system Scavenge air cooler , 11.03, Scavenge air cooler cleaning system Scavenge air cooler requirements Scavenge air pipes Scavenge air system , Sea margin and heavy weather Seawater cooling pump , Seawater cooling system Seawater systems Seawater thermostatic valve Separate system for hydraulic control unit Servo oil system for VBS type CP propeller SFOC at reference conditions SFOC calculations (80%-85%) SFOC calculations, example SFOC for engines with layout on L1 - L3 line SFOC for engines with layout on L2 - L4 line SFOC for high efficiency turbochargers SFOC guarantee SFOC reference conditions and guarantee SFOC, engine configurations related to SFOC, with constant speed SFOC, with fixed pitch propeller Shaftline earthing device Ship speed lines, constant Shop test Shop trials Shut down for AMS and UMS Class and & Turbo requirements Side mounted PTO/RCF, space requirement Silencer, exhaust gas Slow down and shut down system, alarm Slow down for UMS Class and & Turbo requirements Slow down functions Slow down system Small heating box with filter, suggestion for SMCR point (M) SMG/CFE Generators Soft blast cleaning systems Space requirement Space requirements and overhaul heights Space requirements for side mounted PTO/RCF Spare parts Spare parts, additional parts Spare parts, unrestricted service Spare parts, wearing parts Spark arrester, exhaust gas Special running conditions Specific Fuel Oil Consumption (SFOC) Specific fuel oil consumption, ME versus MC engines Specification for painting of main engine Specified maximum continuous rating (M) Spray shields, fuel oil and lubricating oil pipe MAN B&W L70ME-C8.2

16 MAN B&W Index Subject Section Subject Section Standard tools for maintenance, list of Standard tools, dimensions and masses Start of engine, temperature at Starting air compressors Starting air receivers Starting air systems, components for Starting air valve Starting and control air pipes Starting and control air systems Static converter, frequency Steam Turbine Generator (STG) Step-up gear Stuffing box Stuffing box drain oil system Supplementary project data on request Symbols for piping...a System, cylinder lubricating oil System, Engine Control System, exhaust gas System, exhaust gas for main engine , System, fire extinguishing for scavenge air space System, fuel oil System, jacket cooling water System, jacket water System, lubricating and cooling oil System, MAN B&W Alpha Cylinder Lubrication System, manoeuvring System, scavenge air System, scavenge air box drain System, scavenge air cooler cleaning System, seawater System, seawater cooling System, stuffing box drain oil Systems, control and starting air Systems, monitoring and instrumentation Systems, starting air T Tank, deaerating Tank, lubricating oil Telegraph system Temperature at start of engine Temperature control valve, lubricating oil Temperature control, jacket cooling water The fuel optimised ME Tier II engine Thermostatic valve, central cooling Thermostatic valve, jacket water Thermostatic valve, seawater Thrust bearing Tier II fuel optimization Tool panels Tools Tools, dimensions and masses of Top bracing Top bracing, engine Torsional vibration damper Torsional vibrations Total back-pressure, exhaust Tuning wheel Tunnel gear with hollow flexible coupling Turbines combined, full WHRS steam and power Turbocharger arrangement and cleaning Turbocharger cleaning systems Turbocharger selection Turbocharger, exhaust Turbochargers, lubricating of Turning gear , Turning gear, electric motor for Turning wheel Two-tank cylinder oil supply system U Undercritical running V VBS type CP propeller and range Vectors of thermal expansion, turbocharger outlet flange Venting box, fuel oil Venting of engine plant equipment separately Venting to the outside air, engine and tank Vibration aspects Vibration limits valid for single order harmonics W Waste Heat Recovery Systems (WHRS) Water and oil in engine Water in fuel emulsification Water In Oil Monitoring system (WIO) Water mist catcher, drain from Water washing, turbocharger cleaning Water, masses of Wearing parts WHR element and safety valve WHRS generator output Wiring diagram, MAN B&W Alpha Cylinder Lubrication X X-type guide force moment MAN B&W L70ME-C8.2

17 MAN B&W Engine Design 1

18

19 MAN B&W 1.01 The Fuel Optimised ME Tier II Engine Page 1 of 2 The ever valid requirement of ship operators is to obtain the lowest total operational costs, and especially the lowest possible specific fuel oil consumption at any load, and under the prevailing operating conditions. However, low-speed two-stroke main engines of the MC type, with a chain driven camshaft, have limited flexibility with regard to fuel injection and exhaust valve activation, which are the two most important factors in adjusting the engine to match the prevailing operating conditions. A system with electronically controlled hydraulic activation provides the required flexibility, and such systems form the core of the ME Engine Control System, described later in detail in Chapter 16. Concept of the ME engine The ME engine concept consists of a hydraulicmechanical system for activation of the fuel injection and the exhaust valves. The actuators are electronically controlled by a number of control units forming the complete Engine Control System. & Turbo has specifically developed both the hardware and the software in-house, in order to obtain an integrated solution for the Engine Control System. The fuel pressure booster consists of a simple plunger powered by a hydraulic piston activated by oil pressure. The oil pressure is controlled by an electronically controlled proportional valve. The exhaust valve is opened hydraulically by means of a two-stage exhaust valve actuator activated by the control oil from an electronically controlled proportional valve. The exhaust valves are closed by the air spring. In the hydraulic system, the normal lube oil is used as the medium. It is filtered and pressurised by a Hydraulic Power Supply unit mounted on the engine or placed in the engine room. The starting valves are opened pneumatically by electronically controlled On/Off valves, which make it possible to dispense with the mechanically activated starting air distributor. By electronic control of the above valves according to the measured instantaneous crankshaft position, the Engine Control System fully controls the combustion process. System flexibility is obtained by means of different Engine running modes, which are selected either automatically, depending on the operating conditions, or manually by the operator to meet specific goals. The basic running mode is Fuel economy mode to comply with IMO NO x emission limitation. Engine design and IMO regulation compliance The ME-C engine is the shorter, more compact version of the ME engine. It is well suited wherever a small engine room is requested, for instance in container vessels. For MAN B&W ME/ME-C-TII designated engines, the design and performance parameters have been upgraded and optimised to comply with the International Maritime Organisation (IMO) Tier II emission regulations. For engines built to comply with IMO Tier I emission regulations, please refer to the Marine Engine IMO Tier I Project Guide. MAN B&W 98ME/ME-C7 TII.1, 95-50ME-C/-GI TII.4/.2 engines

20 MAN B&W 1.01 Page 2 of 2 Tier II fuel optimisation NO x regulations place a limit on the SFOC on two-stroke engines. In general, NO x emissions will increase if SFOC is decreased and vice versa. In the standard configuration, MAN B&W engines are optimised close to the IMO NO x limit and, therefore, NO x emissions may not be further increased. The IMO NO x limit is given as a weighted average of the NO x emission at 25, 50, 75 and 100% load. This relationship can be utilised to tilt the SFOC profile over the load range. This means that SFOC can be reduced at part load or low load at the expense of a higher SFOC in the high-load range without exceeding the IMO NO x limit. Optimisation of SFOC in the part-load (50-85%) or low-load (25-70%) range requires selection of a tuning method: ECT: Engine Control Tuning VT: Variable Turbine Area EGB: Exhaust Gas Bypass HPT: High Pressure Tuning Each tuning method makes it possible to optimise the fuel consumption when normally operating at low loads, while maintaining the possibility of operating at high load when needed. The tuning methods are available for all SMCR in the specific engine layout diagram but they cannot be combined. The specific SFOC reduction potential of each tuning method together with full rated (L 1 /L 3 ) and maximum derated (L 2 /L 4 ) is shown in Section For K98 engines, high-load optimisation is not a relevant option anymore and only ECT, EGB and HPT are applicable tuning methods for part- and low-load optimisation. Otherwise, data in this project guide is based on high-load optimisation unless explicitly noted. For part- and low-load optimisation, calculations can be made in the CEAS application described in Section MAN B&W 98ME/ME-C7 TII.1, 95-50ME-C TII.4/.2 engines

21 MAN B&W 1.02 Engine Type Designation Page 1 of 1 6 S 90 M E -C 9.2 -GI -TII Emission regulation TII IMO Tier level Fuel injection concept (blank) Fuel oil only GI Gas injection Version number Mark number Design B C Exhaust valve controlled by camshaft Compact engine Concept E Electronically controlled C Camshaft controlled Engine programme Diameter of piston in cm Stroke/bore ratio Number of cylinders G S L K Green Ultra long stroke Super long stroke Long stroke Short stroke MAN B&W MC/MC-C, ME/ME-C/ME-B/-GI engines

22 MAN B&W 1.03 Power, Speed and Fuel Oil Page 1 of 1 MAN B&W L70ME-C8.2-TII Cyl. L 1 kw Stroke: 2,360 mm 5 16, ,160 kw/cyl. L 1 3,270 L 3 2,750 2,620 L 2 2,200 L r/min 1 - L 3 L 1 /L 3 MEP: 20.0 bar SFOC optimised load range Tuning 50% 75% 100% ECT VT ECT VT L 4 L 2 /L 4 MEP: 16.0 bar SFOC optimised load range Tuning 50% 75% 100% ECT VT ECT VT Fig : Power, speed and fuel oil MAN B&W L70ME-C8.2-TII

23 MAN B&W 1.04 Engine Power Range and Fuel Oil Consumption Page 1 of 1 Engine Power The following tables contain data regarding the power, speed and specific fuel oil consumption of the engine. Engine power is specified in kw for each cylinder number and layout points L 1, L 2, L 3 and L 4. Discrepancies between kw and metric horsepower (1 BHP = 75 kpm/s = kw) are a consequence of the rounding off of the BHP values. L 1 designates nominal maximum continuous rating (nominal MCR), at 100% engine power and 100% engine speed. L 2, L 3 and L 4 designate layout points at the other three corners of the layout area, chosen for easy reference. Specific Fuel Oil Consumption (SFOC) The figures given in this folder represent the values obtained when the engine and turbocharger are matched with a view to obtaining the lowest possible SFOC values while also fulfilling the IMO NOX Tier II emission limitations. Stricter emission limits can be met on request, using proven technologies. The SFOC figures are given in g/kwh with a tolerance of 5% (at 100% SMCR) and are based on the use of fuel with a lower calorific value of 42,700 kj/kg (~10,200 kcal/kg) at ISO conditions: Ambient air pressure...1,000 mbar Ambient air temperature C Cooling water temperature C Although the engine will develop the power specified up to tropical ambient conditions, specific fuel oil consumption varies with ambient conditions and fuel oil lower calorific value. For calculation of these changes, see Chapter 2. Lubricating oil data Fig : Layout diagram for engine power and speed Overload corresponds to 110% of the power at MCR, and may be permitted for a limited period of one hour every 12 hours. The cylinder oil consumption figures stated in the tables are valid under normal conditions. During running-in periods and under special conditions, feed rates of up to 1.5 times the stated values should be used. The engine power figures given in the tables remain valid up to tropical conditions at sea level as stated in IACS M28 (1978), i.e.: Blower inlet temperature C Blower inlet pressure...1,000 mbar Seawater temperature C Relative humidity...60% MAN B&W MC/MC-C, ME/ME-C/ME-B engines

24 MAN B&W 1.05 Page 1 of 1 Performance Curves Updated engine and capacities data is available from the CEAS program on Two-Stroke CEAS Engine Calculations. MAN B&W MC/MC-C, ME/ME-C/ME-B/-GI engines

25 MAN B&W 1.06 ME Engine Description Page 1 of 6 Please note that engines built by our licensees are in accordance with & Turbo drawings and standards but, in certain cases, some local standards may be applied; however, all spare parts are interchangeable with & Turbo designed parts. Some components may differ from & Turbo s design because of local production facilities or the application of local standard components. In the following, reference is made to the item numbers specified in the Extent of Delivery (EoD) forms, both for the Basic delivery extent and for some Options. Bedplate and Main Bearing The bedplate is made with the thrust bearing in the aft end of the engine. The bedplate consists of high, welded, longitudinal girders and welded cross girders with cast steel bearing supports. For fitting to the engine seating in the ship, long, elastic holding-down bolts, and hydraulic tightening tools are used. The bedplate is made without taper for engines mounted on epoxy chocks. The oil pan, which is made of steel plate and is welded to the bedplate, collects the return oil from the forced lubricating and cooling oil system. The oil outlets from the oil pan are vertical as standard and provided with gratings. The main bearings consist of thin walled steel shells lined with bearing metal. The main bearing bottom shell can be rotated out and in by means of special tools in combination with hydraulic tools for lifting the crankshaft. The shells are kept in position by a bearing cap. Frame Box The frame box is of welded design. On the exhaust side, it is provided with relief valves for each cylinder while, on the manoeuvring side, it is provided with a large hinged door for each cylinder. The crosshead guides are welded on to the frame box. The frame box is bolted to the bedplate. The bedplate, frame box and cylinder frame are tightened together by stay bolts. Cylinder Frame and Stuffing Box The cylinder frame is cast and provided with access covers for cleaning the scavenge air space, if required, and for inspection of scavenge ports and piston rings from the manoeuvring side. Together with the cylinder liner it forms the scavenge air space. The cylinder frame is fitted with pipes for the piston cooling oil inlet. The scavenge air receiver, turbocharger, air cooler box and gallery brackets are located on the cylinder frame. At the bottom of the cylinder frame there is a piston rod stuffing box, provided with sealing rings for scavenge air, and with oil scraper rings which prevent crankcase oil from coming up into the scavenge air space. Drains from the scavenge air space and the piston rod stuffing box are located at the bottom of the cylinder frame. Cylinder Liner The cylinder liner is made of alloyed cast iron and is suspended in the cylinder frame. The top of the cylinder liner is fitted with a cooling jacket. The cylinder liner has scavenge ports and drilled holes for cylinder lubrication. Cylinder liners prepared for installation of temperature sensors is basic execution on engines type 90 while an option on all other engines. MAN B&W 90-50ME-C8 TII.2 and higher

26 MAN B&W 1.06 Page 2 of 6 Cylinder Cover The cylinder cover is of forged steel, made in one piece, and has bores for cooling water. It has a central bore for the exhaust valve, and bores for the fuel valves, a starting valve and an indicator valve. The cylinder cover is attached to the cylinder frame with studs and nuts tightened with hydraulic jacks. Crankshaft The crankshaft is of the semi-built type, made from forged or cast steel throws. For engines with 9 cylinders or more, the crankshaft is supplied in two parts. At the aft end, the crankshaft is provided with the collar for the thrust bearing, a flange for fitting the gear wheel for the step-up gear to the hydraulic power supply unit if fitted on the engine, and the flange for the turning wheel and for the coupling bolts to an intermediate shaft. At the front end, the crankshaft is fitted with the collar for the axial vibration damper and a flange for the fitting of a tuning wheel. The flange can also be used for a Power Take Off, if so desired. Coupling bolts and nuts for joining the crankshaft together with the intermediate shaft are not normally supplied. Thrust Bearing The propeller thrust is transferred through the thrust collar, the segments, and the bedplate, to the end chocks and engine seating, and thus to the ship s hull. The thrust bearing is located in the aft end of the engine. The thrust bearing is of the B&W-Michell type, and consists primarily of a thrust collar on the crankshaft, a bearing support, and segments of steel lined with white metal. Engines type 60 and larger with 9 cylinders or more will be specified with the 360º degree type thrust bearing, while the 240º degree type is used in all other engines. & Turbo s flexible thrust cam design is used for the thrust collar on a range of engine types. The thrust shaft is an integrated part of the crankshaft and it is lubricated by the engine s lubricating oil system. Step-up Gear In case of mechanically, engine driven Hydraulic Power Supply, the main hydraulic oil pumps are driven from the crankshaft via a step-up gear. The step-up gear is lubricated from the main engine system. Turning Gear and Turning Wheel The turning wheel is fitted to the thrust shaft, and it is driven by a pinion on the terminal shaft of the turning gear, which is mounted on the bedplate. The turning gear is driven by an electric motor with built-in brake. A blocking device prevents the main engine from starting when the turning gear is engaged. Engagement and disengagement of the turning gear is effected manually by an axial movement of the pinion. The control device for the turning gear, consisting of starter and manual control box, can be ordered as an option. Axial Vibration Damper The engine is fitted with an axial vibration damper, mounted on the fore end of the crankshaft. The damper consists of a piston and a split-type housing located forward of the foremost main bearing. The piston is made as an integrated collar on the main crank journal, and the housing is fixed to the main bearing support. MAN B&W 90-50ME-C8 TII.2 and higher