ME Fundamentals and Critical Principles

Transcription

1 ME Fundamentals and Critical Principles 1 st Classification Society Event 2017 Friday 8 December 2017 Vassilis Kois Technical Instructor MAN PrimeServ Academy Piraeus MAN Diesel & Turbo V. Kois ME Fundamentals & Critical Principles < 1 >

2 Any new recommendations to machinery survey?? Hydraulic AC Pumps Pressure Build Up response time Hydraulic Engine Driven Pumps Displacement for Ahead/Astern Accumulators of Hydraulic Power Supply System Pressure check Accumulators of Hydraulic Cylinder Units System Pressure check FIVA Operation Testing of Cylinders Angle Encoders Crank Angle reading accuracy < 2 >

3 What new to inspect on ME engines < 3 >

4 New Components / Redesigned Hydraulic Power Supply (HPS) Hydraulic Cylinder Unit (HCU) Engine Control System (ECS) Starting air valves Start and Reversing sequences Governor function Auxiliary blowers Electronically Profiled Injection (EPIC) Exhaust valve actuation Cylinder lubrication (ACC) Exhaust valve Crankshaft position sensing system Local Operation Panel (LOP) < 4 >

5 Super Fine Filter ME engine - Hydraulic layout Pressure 300bar 2bar LPS < 5 >

6 ME ME Engine Control System Bridge Panel Bridge Main Operating Panel Control Room Panel Main Operating Panel B Engine Control Room EICU A Engine Control Units A and B Engine Interface Control Units A and B ECU A Local Operation Panel EICU B ECU B Control Network ACU Auxiliariy Control Units 1, 2 and 3 CCU Cylinder Control Units 1 per cylinder Engine Room/On Engine < 6 >

7 Engine Control System MPC & Control Network The Multi Purpose Controllers are identical hardware wise. They have different software configurations. 2 redundant control networks are connecting all Multi Purpose Controllers and both Main Operating Panels. A backup of the application- and setup- software is stored on both Main Operation Panels. At replacement, the new controller is automatically configured with correct software via the control networks. < 7 >

8 MPC Unique ID < 8 >

9 Multi Purpose Controller, MPC Battery for internal clock LED indicator DIP Switches & Reset push button Fuses DIP Switches Power Plug < 9 >

10 Maintenance: System View, I/O Test < 10 >

11 Multi Purpose Controller, MPC Summary The MPC s are software wise configured to 4 different controller functions: 1) Engine Interface Conrol Unit EICU 2 completely redundant units Handles the interface to external systems & protects the engine by generating setpoint of speed 2) Engine Control Unit ECU 2 completely redundant units (except with more than 3 engine driven pumps) Handles the engine specific control functions (the govenor) 3) Cylinder Control Unit CCU 1 for each cylinder unit. No redundancy. Handles the cylinder specific functions (fuel injection, exh. valve, cylinder lubrication and starting air valves) 4) Auxilliary Control Unit ACU 3 units. No redundancy Handles the auxilliary systems (hydraulic power supply, aux blowers) 5) Scavenging Air Control Unit SCU (Option) 1 Unit, no redundancy VTA, EGB, WHRS < 11 >

12 ME Engine Hydraulic Oil Loop ME Engine Hydraulic Oil Loop Filter (6 micro mm.) 2-3 bar HPS, Hydraulic pump 300 bar Sp/pilot connection Accumulator/Safety block Appr.275 bar Hydraulic system Roughly 10% Start-up pump Engine Lubrication, Cooling roughly 90% 300 bar HCU, Fuel booster, Exhaust valve actuator Ship filter Main Tank and pumps < 12 >

13 Engine Driven Pumps Engine Driven Pumps < 13 >

14 Hydraulic Power Supply HPS HPS Start-up pumps High pressure pumps Drainpipe system System oil High pressure pipes < 14 >

15 Hydraulic Power Supply HPS in AFT of engine < 15 >

16 Hydraulic Power Supply HPS in the middle of engine < 16 >

17 Axial Piston Pump Bosch Rexroth Axial Piston Pump A4VSO xxx HS3xxx. (Bosch-Rexroth) Inlet, 2 Bar Outlet, 300 Bar Control pressure Case drain < 17 >

18 ME Tacho system < 18 >

19 Tacho System < 19 >

20 Tacho System Angle Encoders TSA-A 4001-A 4002-A 4003-A 4004-A ECU s + CCU s 4001-B 4002-B 4003-B 4004-B TSA-B Cable to TSA-A box Cable to TSA-B box Q2A MMA Q1A Q2B Q1B MMB MSA Turning wheel reference 90 deg ATDC 0 deg (TDC 1) MSA (not used) 45 deg ATDC MSB Tacho Encoder A Angle encoder A Angle Tacho encoder Encoder B < 20 >

21 Hydraulic Cylinder Unit HCU 7K80ME-C9 Fuel Oil Pressure Booster Exhaust Valve Actuator FIVA & Proportional Valve Distribution Block Cylinder Lubricator < 21 >

22 Hydraulic Cylinder Unit Fuel Oil Pressure booster Exhaust Valve Actuator Accumulator Overflow pipe FIVA valve Ball Valve Distribution Block Cylinder Lubricator < 22 >

23 FIVA valve Two control port Parker Pilot Valve PCB Pilot Spool Valve Housing Control Spool L Tfi Cfi P Cva Tva L Main Spool Feedback Sensor * LVDT < 23 >

24 Fuel Oil System Suction valve High pressure pipe Slide fuel valve Hydraulic piston FIVA valve Fuel oil inlet 7-8 bar Accumulator To drain High pressure hydraulic oil inlet < 24 >

25 Design Features, MC versus ME High force exh. valve S50MC-C S50ME-C Air spring size for closing the exhaust valve reduced Hydraulic damper for fixed valve stroke Different valve spindle design < 25 >

26 Exhaust Valve Actuation, MC versus ME. Hydraulic push rod Exhaust valve Actuator Exhaust valve spindle High pressure hydraulic oil inlet FIVA Valve Accumulator < 26 >

27 Accumulator Diaphragm, Working Principle < 27 >

28 Total Base Number (TBN) < 28 >

29 Auxiliaries: Cylinder Lubricators < 29 >

30 Feed Rate Sweep < 30 >

31 Cylinder Lubrication Back up In case of CCU failure, where the CCU cannot be changed immediately, the cylinder lubrication can be achieved by a temporary cable from one of the ECU units, plug 52, to the solenoid valve on the lubricator on the unit in question. The lubrication will be with random timing. < 31 >

32 Engine: Operation < 32 >

33 Engine: Status < 33 >

34 Engine: Process Information Running Mode < 34 >

35 Engine: Process Information Running Mode < 35 >

36 Engine: Process Adjustment Pressures < 36 >

37 Engine: Process Adjustment Pressures < 37 >

38 Engine: Chief Limiters < 38 >

39 Engine: Chief Limiters < 39 >

40 Maintenance: Troubleshooting HCU Events < 40 >

41 Maintenance: Troubleshooting HCU Events < 41 >

42 Maintenance: Troubleshooting HCU Events < 42 >

43 Admin.: Version < 43 >

44 PMI system < 44 >

45 MAN Diesel PMI system Engine Control Room Engine Room Junction box Portable measuring unit MOP B PMI/CoCoS- EDS PC PMI DAU Data Aqusition Unit Junction Box 24V To Tacho System To Pscav sensor Connectors Option for PMI Auto-tuning AMS PC *Optional Up to 20 cylinders Fixed Pressure Sensor < 45 >

46 PMI Auto-tuning The new DAU 11 computer DAU: General purpose Data Acquisition Unit based on FPGA technology PMI Auto-tuning application: Support for up to 20 cylinders Support for ABB & Kistler sensors Angle and time triggered data sampling Real time data logging & transfer On-unit status indication < 46 >

47 Disclaimer All data provided in this document is non-binding. This data serves informational purposes only and is especially not guaranteed in any way. Depending on the subsequent specific individual projects, the relevant data may be subject to changes and will be assessed and determined individually for each project. This will depend on the particular characteristics of each individual project, especially specific site and operational conditions. < 47 >

48 Thank You For Your Attention Vassilis Kois Technical Instructor MAN PrimeServ Academy Piraeus MAN Diesel & Turbo Hellas Ltd 89, Akti Miaouli Piraeus, Greece Phone: Direct: Fax: Mobile: < 48 >