ME & Alpha Lub电子注油器
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Reference ListThe MC ProgrammeL/0305-5.49/0702(3210/AMK)As at 2003.02.14Total:124,324,378 BHP ~ 91,440,580 kWNumber of engines98101 6590309 23780542 4687098784660 1,8441,60050 1,7891,48046 72 574228725335 1,1211,00426180163Type On order or delivered In serviceTotal7,2326,173As at 2003.03.07(3210/KM)ME-EnginesOptimal performance at any load & mode7S50ME-C at Alpha DieselWHY?L/73737-6.0/0203 (3000/OG)Electronic EnginesTo ensure:•Fuel injection•Exhaust valve operationPrecisely when and asdesiredWHY?To improve:• Low load operation • SFOC• Engine versatility• Emissions (NO x , soot, smoke)• Time between overhauls • Diagnostics systems • Etc. etc.L/73723-2.0/0203 (3000/OG)Electronic EnginesThe ME Engine … with fully integratedelectronic controlvs.The other engine … with ”common rail”What is in a word?L/73722-0.0/0203 (3000/OG)Electronic EnginesThe ME engineWith fully integrated controlofStarting air valvesStart and Reversing sequencesGovernor functionAuxiliary blowersElectronically Profiled Injection control Exhaust valve actuationElectronic EnginesTrue Common RailGood for what it was made forWe have made what is good for low speed diesels L/73724-4.0/0203 (3000/OG)Common RailA utomotive type Common RailFuel 1600 bar T emp ~ 50 CoElectronically controlled fuel injection for low speed diesel M NB W A &Fuel 8 bar 150 CoOtherFuel 1000 bar 150 CoServo oil 200 bar T emp ~ 50 CoFuel 800 bar 150 CoServo oil 200 bar T emp ~ 50 CoFuel 800 bar 150 CoL/73757-9.0/0203(3000/OG)Comparison of Fuel Injection SystemsME EngineFuel oilServo oil Servo oilOther SystemCommon RailFuel oilL/73738-8.0/0203(3000/OG)The Difference plus the ME Engine Control SystemMC EngineME EngineMC-C Components Omitted• • • • • • • • • • • • • Chain drive Chain wheel frame Chain box on frame box Camshaft with cams Roller guides for fuel pump and exhaust valve Fuel pumps Exhaust valve Exhaust actuator Starting air distributor Governor Regulating shaft Mechanical Lubricator Local control stand(2200/OZS)L/73753-1.0/02037S50ME New Components• Hydraulic Power Supply (HPS) • Hydraulic Cylinder Unit (HCU) • ME fuel pump • ME exhaust actuator • ME exhaust valve • Engine Control System (ECS) • Crankshaft position and speed system • Solenoid valve for control of starting valve • Auxiliary blower control integrated in the ECS • Integrated electronic governor • Electronically controlled Alpha Lubricator • Local Operation Panel (LOP)L/73754-3.0/0203 (2200/OZS)Hydraulic System on the ME EngineHydraulic Power Supply (HPS)Return oil to bedplateSafety and accumulator unit Electrically driven start-up pumpsLube oil in let to engineEngine driven driven pumps Bypass filter Main filter DrainStep-up gearHPS Hydraulic Power Supply UnitAccumulators Self cleaning filter 10µ µ Start up pumps Safety and accumulators blockxAxial piston pumpsStart up pumpsRedundancy filter 25µ µL/73750-6.0/0203 (2200/OZS)ME Fuel Oil Pressure BoosterS50MC-C S50ME-CSuction ValveFuel plunger Fuel oil inlet pressure 8 barFeed back Position sensorHydraulic piston Gearing: 4,55:1L/74392-8.0/0203(3000/OG)ME Fuel injection systemHigh pressure pipe Suction valve Slide fuel valveFuel plunger Fuel oil inlet 8 bar Hydraulic piston ELFI Proportional valve Membrane accumulatorTo drainL/74395-3.0/0203 (3000/OG)High pressure hydraulic oil - inletFuel Oil Pressure BoosterPhase 11. 2. • • The pistons move to the bottom position. The fuel inlet is open. Hydraulic oil leaves the hydraulic oil chamber via the ELFI valve. The accumulators are supplied by the Hydraulic Power Supply. The pressurised hydraulic oil is held back by the closed ELFI valve.ELFIUnpressurised fuel oil Pressurised fuel oil Unpressurised hydraulic oil Pressurised hydraulic oilL/73825-1.0/0303(3000/OG)Fuel Oil Pressure BoosterL/73826-3.0/0303 (3000/OG)5.The ELFI valve is activated upwards, closing the return flow and opening for the flow of pressurised hydraulic oil. The oil passes through the ELFI valve and fills the hydraulic chamber.6.The high pressure forces the pistons upwards.7.The fuel oil inlet is closed.8.The pressure on the fuel oil rises and exceeds the force of the spring in the cylinder’s fuel injection valve.Unpressurised fuel oil Pressurised fuel oil Unpressurised hydraulic oil Pressurised hydraulic oilPhase 2ELFIActuator for Exhaust ValveL/73827-5.0/0303 (3000/OG)The ELVA valve which drives the actuator on the exhaust side has two positions,open or shut.When it is opened, the hydraulic oil isforced in and pushes the pistons upwards,thus opening the engine’s exhaust valve.The pressure is permanently maintained until the ELVA valve is activated to block the pressure and the exhaust phase is completed.Unpressurised hydraulic oil Pressurised hydraulic oilELVAActuatorBridgeEngine Control Room Engine Room/On EngineAuxiliary machinery systems, capacitiesfuel, lube, cooling water, etc. unchangedGallery outline unchanged New electro hydrauliccomponents engineTotal engineSFOC Ecomomy SFOC Low NOx15/02/2003 7S50ME-C / 7S50MC-C 75 % Load15/02/2003 7S50ME-C / 7S50MC-C 75 % Load15/02/200315/02/2003 7S50ME-C Alpha KF 144 Propeller Curve100 %75 %15/02/2003 Constant Pressure2003-02-17T he M E E n g i n e T y p eM/T Bow C e cilirst ME S e aThe F irst ME Engine at S e a Main Engine: 6L60MC “6L60ME ”Acceptance Test on 4T50MX: 2000.09.21Qua y T rial at Hamburg: 2000.10.01/02 Sea Trial at Borneo: 2000.11.08/094000 hrs I nspection in Rotterdam: 2001.10.08Se rvice T e s t of the M E Engine TypeOdfjell deep sea officesOdfjell deep sea trade pathsM/T ”B o w C e c il”6L60MC /M ET h e M E E n g i n e T y p eHamburg – 00.10.01/02SingaporeUlsan - 00.12.09 <Copenhagen – 00.09.21Total - l h oursBintulu –00.11.08/09 <> Guang Zhou - 00.11.15> 00.12.27Cam engineElectronically controlled engine Present voyagew ith electro n ically controlled engine2003-02-11 - 10.799Present voyage: 200201Le Havre:2002.02.11Ulsan:2002.03.22MAN B&W Diesel A/SA l p h a L u b r i c a t o r S y s t e mAlpha Lubricator SystemAlpha Lubricator SystemLubrication principle•The lubrication principle is intermittent lubrication where an engine cycle with lube oil injection is followed by one or more (normally 4 cycles without oil injection.•The injection is timed in relation to the position of the pi ston ring . •The specific feed rate is controlled by variation of the inj ection frequency.•Adjusting of the feed rate in relation to MEP and LCD lubric ation is standard.•Pre -lubrication of the cylinder can be done just before start of the engine.A l p h a L u b r i c a t o r S y s t e mservice。