Contents Lecture items A) ME engine A-1) General outline of ME engine A-2) Maintenance of ME-C engine A-3) Trouble of ME/ME-C engine B) MC engine B-1) Trouble of MC engine 2
Contents C) Technical information C-1) New developed parts 1) Electronic control VIT system 2) Running-in ring package(tn083) 3) Dura spindle C-2) Technical information 1) Low Sulphur Fuel oil(sn174, MN082) 3
Contents Lecture items A) ME engine A-1) General outline of ME engine A-2) Maintenance of ME-C engine A-3) Trouble of ME/ME-C engine B) MC engine B-1) Trouble of MC engine 4
A-1) Feature of ME-C/ME-B Engines Fuel Injection Exhaust Valve Actuation Starting Air Distribution MC/MC-C Engine ME-C/ME-B Engine Driven by by Camshaft and Cam Driven by by Hydraulic Power with Electronic Control without cam shaft (only (only ME-C) ME-C)
ME/ME-C Engine s advantages Lowest revolution Smoke at low load reduced Adjustable fuel injection pattern SFOC & NOx optimized Engine performance at each load Start-up engine Improved Reversing performance Adjustable exhaust valve open/close Acceleration Blow back Improved only ME-C 6
ME-C/ME-B Engine s advantages Adjustable start air injection timing Starting acceleration & certainty Improved Optimized cylinder oil feeding Cylinder oil consumption Particulate Matter reduced Cylinder condition optimized Easy manipulation & monitoring by MOP (Main Operating Panel) Continuous monitoring Certainty starting operation Setting of access level Error indication, log record Upgrade of software Setting of operation mode Adjustable cylinder deviation, cylinder oil feed rate only ME-C 7
ME Mechanical Design Concept Basic Differences 2 1 : Alpha is option 2 : Only S50ME-C is gear-driven HCU : Hydraulic Cylinder Unit HPS : Hydraulic Power Supply 8
ME Mechanical Design Concept Basic Differences 1 : Alpha is option 2 : Only S50ME-C is gear-driven HCU : Hydraulic Cylinder Unit HPS : Hydraulic Power Supply 9
ME Mechanical Design Concept Basic Differences MC-C ME-C ME-B Contr. Fuel injection Driver Camshaft Chain Electronic (HCU) Chain 2 /HPS Electronic (Dual HCU) El. Motors/HPS Contr. exh. valves Driver Camshaft Chain Electronic (HCU) Chain 2 /HPS Small camshaft (+Electronic Dot3) Chain Contr. Cylinder oil Lubricator Driver Camshaft Mechanical 1 Chain Electronic Alpha Chain 2 /HPS Electronic Alpha El. Motors/HPS Contr. Starting air distributer Camshaft (Distributor) Electronic (Solenoid valve) Camshaft (Distributor) 1 : Alpha is option 2 : Only S50ME-C is gear-driven HCU : Hydraulic Cylinder Unit HPS : Hydraulic Power Supply 10
Parts withdraw from MC Engine Fuel injection pumps (conventional) Fuel pumps actuating gear, Regulating shaft Roller oller guides (Fuel & exhaust) Exhaust valve actuating gear Camshaft amshaft with fuel cams and exhaust cams Mechanical cylinder lubricators Chain Chain drive for camshaft Engine driven starting air distributor Electronic governor with actuator Engine-side control console 11
Parts added to ME Engine Hydraulic system HCU : Hydraulic Cylinder Unit Fuel pressure booster Exh. V. actuator FIVA valve, cylinder lubricator Accumulator HPS : Hydraulic Power Supply Gear box Hydraulic pumps(300bar) Start-up pumps (Electrically driven Safety and accumulator block Filter unit with back-flushing Oil leak monitoring system 12
Parts added to ME Engine Control system ME Control System (ME-ECS) MPC:Multi Purpose Contoller (ECU/CCU/ACU/EICU/SCU) MOP:Main Operating Panel LOP:Local Operation Panel Solenoid valves for starting air system Tacho system Angle encoder Reference sensor on turning wheel 13
Hydraulic System (System Oil Flow) Common (Integrated) Hydraulic Control Oil System (standard) HCU Fuel Oil Pressure Booster Exhaust Valve Actuator Fuel Oil 0.8 MPa Alpha Lubricator (AL) Cyl. 1 CCU Cyl. 2 CCU Cyl. 3 CCU Cyl. 4 CCU Cyl. 5 CCU Cyl. 6 CCU Hydraulic Control Oil 30.0 MPa HPS Hydraulic Oil Return Safety Block Piston Cooling Oil From Main Lubricant Oil System Filter automatic back-flushing: 6 micron Engine Driven Pumps Electrical Start-up Pumps
Arrangement of Hydraulic Components HCU HPS 7S65ME-C MITSUI MITSUI ENGINEERING ENGINEERING & SHIPBUILDING SHIPBUILDING CO.,LTD. CO.,LTD. 15
HPS (with gear box cover ) Arrangement of 7S65ME-C Redundancy Filter 25 m Hydraulic Oil Filter 6 m Electrical Start-up Pump x 2 Gear Box Engine Driven Pump x 3 Accumulator x 3 16
Engine Driven Pump (Piston pump) Piston Oil outlet (High press.) Piston Oil Suction (Low press.) Swash plate Suction side Pressure side Swash plate control Other (Lubrication)
HCU (Hydraulic Cylinder Unit) Fuel Oil Pressure Booster Exhaust Valve Actuator Distributor Block Accumulator FIVA Fuel Injection and Valve Activation Alpha Lubricator MITSUI MITSUI ENGINEERING ENGINEERING & SHIPBUILDING SHIPBUILDING CO.,LTD. CO.,LTD. 18
FIVA (Fuel Injection and Valve Activation) ELFI/ELVA Control Valve Piston Feedback Sensor Cover Cover Drain (Fuel) Fuel Hyd.Oil Exh.V Drain (Exh.V) Main Spool Housing
Fuel Injection System Fuel Oil Pressure Booster Suction Valve Fuel Valve Plunger Fuel Oil Inlet Hydraulic Piston FIVA High-pressure Oil Inlet (MC/MC-C Engines) Hydraulic Oil Return Accumulator
Fuel Injection System Fuel oil pressure booster K98ME/ME-C Top cover FO plunger Housing Stroke sensor S70ME-C Umbrella Taper shape Hydraulic piston
Exhaust Valve Activation System Exhaust High Pressure Pipe Exhaust Valve Actuator Exhaust Valve Spindle FIVA High-pressure Oil Inlet (MC/MC-C Engines) Hydraulic Oil Return Accumulator
Exhaust Valve Activation System Exhaust valve actuator S50ME-C K98ME/ME-C Top cover Hydraulic cylinder Two step piston: Second stage Main piston First stage Guide piston High-pressure oil Inlet
Exhaust Valve Activation System Exhaust valve (upper part) Sealing oil devices Cone piece Stroke sensor Oil inlet Hydraulic piston Hydraulic nut Oil outlet Damping piston Spring air inet Sealing oil inlet
Starting Air Valve MC/MC-C Engines ME/ME-C Engines Blow-off Pilot-air Inlet Solenoid Valve Starting Air Distributor Camshaft drive to CCU Starting Air Valve Starting Air Valve
Pneumatic diagram MC engine Removed component for Start / Stop for AH / AS for Adjusting FO for FO cut / Emergency for Remote / Local
Pneumatic diagram ME engine Added component for Slow turning for Starting valve
Outline of ME Operation system ID key (MPC) Multi Purpose Contoller Wheel House Control Room Bridge Panel ECR Panel MOP A MOP B EICU A EICU B MOP: Main Operation Panel EICU: Engine Interface Control Unit ECU: Engine Control Unit CCU: Cylinder Control Unit ACU: Auxiliary Control Unit LOP: Local Operation Panel SAV FIVA AL :Starting Air Valve :Fuel Injection and Valve Activation :Alpha Lubricator LOP Engine Side ECU A ECU B ACU 1 ACU 2 ACU 3 CCU 1 CCU n PUMP 1 M PUMP 2 M PUMP 1 M PUMP 2 M PUMP 3 M Start-up Pump Engine driven Pumps Auxiliary 1 Auxiliary 2 blower 1 blower 2 SAV 1 FIVA 1 Cylinder 1 HCU 1 AL 1 SAV 1 n FIVA 1 n Cylinder n HCU n AL 1 n 28
Multi Purpose Controller MPC; Multi Purpose Contoller ID-key 29
ME Operation system MPC Cabinet for MPC in the cabinet MPC ID-key 30
Alpha Lubricator Differences between MC type and ME type Lubricator Actuator Driving oil Pressurized device for driving oil Control system Operation panel For MC engine At each cylinder Over 65cm bore 2 actuators Less 60cm bore 1 actuator Cylinder lubricating oil (5.0 MPa) Pump station ALCU (Alpha Lubricator Control Unit) HMI panel (Human Machine Interface) For ME engine At each cylinder 1 actuator (without accumulator) ME hydraulic control oil (30.0 MPa) (system oil) Hydraulic Power Supply ME ECS (Engine Control System) MOP (Main Operating Panel) Tacho system Encoder Pick up ME Tacho system (Encoder) Load signal Load transmitter ME ECS (Engine Control System) 31
Alpha Lubricator (Actuator) ME/ME-C/ME-B Engines Lubricator Cylinder oil inlet Feedback sensor for piston drive sensing Actuator piston Level sensor Solenoid valve activation signal Cylinder oil outlet to cylinder liner Plunger Spacer for stroke adjustment Stroke adjusting screw Lubricator driving oil = Hydraulic Control Oil ( 30 MPa from HPS)
Alpha Lubricator (Actuator) MC/MC-C Engines Lubricator Feedback sensor for piston drive sensing Actuator piston Solenoid valve activation signal Cylinder oil outlet to cylinder liner Plunger Spacer for stroke adjustment Stroke adjusting screw Lubricator driving oil = Cylinder Oil (5.0 MPa from booster pump) 33
Alpha Lubricator (Interface) Operation panel MC Engines; HMI panel ME engines ; Common interface from MOP The lubrication ratio can be controlled by S% of Fuel oil (Alpha ACC method)
Tacho System (Rotary Encoder) Drive shaft Flexible housing Two rotary encoders are equipped onto the fore end of crank shaft. (Each encoders gives independent signal in consideration of the redundancy.)
ME-B Overview Camshaft driven HPS Aft Fore Chain case (Seen from Aft) 36
HPS and HCU for ME-B Camshaft driven exhaust actuators Pressure booster Dual HCU HPS Hydraulic oil rail HCU Hydraulic Cylinder Unit ELFI Electronic Fuel Injection ELFI valves Light camshaft 37