Local Operating Panel (LOP) with telegraph

Local Operating Panel (LOP) Without telegraph

Tacho sensors Nordic Brasilia – 6S70ME-C

21.01M

ME Concept

1.

MAN B&W Diesel
1) Control system:
- Multi Purpose Controller.
- Main Operating Panel.
- Local Operating Panel.
2) Tacho system.
3) Performance
4) Manoeuvring System
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
<1>

2. ME engine Hydraulic Loop

MAN B&W Diesel
Fuel oil pressure
Exhaust valve actuator
booster
Hydraulic
cylinder unit
Fuel 10 bar
ELFI
ELVA
200 bar
Alpha lubricator
Cyl. 1 CCU Cyl. 2 CCU Cyl. 3 CCU
Cyl. 4 CCU
Cyl. 5 CCU Cyl. 6 CCU
Safety and
Accumulator
blok
Fine aut. filter
Main lube
pump
Piston cooling
+ bearings
Servo oil
Servo oil
return to sump
From sump
Engine driven
hydraulic pumps
© MAN B&W Diesel
L/73273-7.1/0403
(2600/RØL)
EL. driven
hydraulic pumps
<2>

4. Multi Purpose Controller - MPC

MAN B&W Diesel
Battery for internal clock
LED indicator
Plug for ID key
DIP Switches
Fuses in use are monitored by the alarm system
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
Power plug
2006-01-06
<4>

5. LED information Code

MAN B&W Diesel
The LED gives information, either as constant light of flashing.
A flashing LED is a coded message from the controller.The code consists of 2 digits:
1. digit are given by red flashes on yellow background
2. digit are given by green flashes on yellow background
The 2 digits are seperated by a 1 sec. yellow pulse.
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
<5>

6. LED indication code

MAN B&W Diesel
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
<6>

7. Multi Purpose Controller (MPC)

MAN B&W Diesel
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
<7>

8. Multi Purpose Controller (MPC)

MAN B&W Diesel
Multi Purpose Controller
Supporting bracket for cables
Amplifier
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
<8>

9. MPC’s Nordic Brasilia – 6S70ME-C

MAN B&W Diesel
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
<9>

10. MPC – configuration

MAN B&W Diesel
The MPC’s are software wise configured to
4 different controller functions:
1) Engine Interface Conrol Unit – EICU
• 2 complete redundant units
• Handles the interface to external systems
2) Engine Control Unit – ECU
• 2 complete redundant units (except with 4 or more engine driven pumps)
• Handles the engine specific control functions (the govenor)
3) Cylinder Control Unit – CCU
• 1 for each cylinder unit, redundancy by multiplicity
• Handles the cylinder specific functions (fuel injection, exh. Valve, cylinder lubrication and
starting air valves)
4) Auxilliary Control Unit – ACU
• 3 units, redundancy by multiplicity
• Handles the auxilliary systems (hydraulic power supply, aux blowers)
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 10 >

11. Engine Interface Control Unit – EICU

MAN B&W Diesel
Interface to remote control systems:
• Safety system
• Alarm system
• Telegraph system
• Power management system
Operator inputs:
• Control station selection - Bridge, Engine control room or Local control
• Standby / Finished with engine
Speed set point – Filter between handle and govenor:
• Slow down
• Shaft generator
• Controlling accelaration
• Load control
• Barred speed range
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 11 >

12. Speed Setpoint

MAN B&W Diesel
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 12 >

13. Engine Control Unit – ECU

MAN B&W Diesel
Start / stop logic
• Prepare start (MOP or handle)
• Repeated start, (total 3 attempts, reset by setting the handle in ’STOP’)
• Start blocking
• Slow turning
• Manual air run
Engine speed control and limiters
• Calculations of fuel index
• Limiters (start, max fuel all and individual, torque, scav.air, hydraulic press.)
• Feed forward (pitch, PTO power)
Engine running mode control
• Emission mode
• Economy mode
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 13 >

14. Fuel Limiters

MAN B&W Diesel
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 14 >

15. Cylinder Control Unit – CCU

MAN B&W Diesel
Fuel injection control
• Proportional valve
• Feedback of plunger position only used for monitoring
Exhaust valve control
• ON / OFF valve
• Feedback signal for exh. Valve position, used in determination of valve timing
Cylinder lubrication
• ON / OFF valve controling the alpha lubricator
• Feed rate controlled in the ECU
Starting air valve control (timing of solenoid valve)
• ON / OFF valve
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 15 >

16. Engine Control System CCU

MAN B&W Diesel
Fiva valve, Fuel & exhaust
Fuel plunger pos. feedback
Exh. Spindle pos. feedback
Cylinder lubrication
Starting air valve
One CCU for every cylinder
unit
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 16 >

17. Auxiliary Control Unit - ACU

MAN B&W Diesel
Control of Hydraulic Power Supply:
• Engine driven pumps
• Start-up pumps
• Valves and pressure gauges
Individual control of aux blower:
• Sequential start by different start delays
• Engine contol blower / stop is decided in ECU
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 17 >

18. Engine Control System Auxiliary Blowers

MAN B&W Diesel
Aux blower No. 1 is controlled by ACU 1
Aux blower No. 2 is controlled by ACU 2
Aux blower No. 3 is controlled by ACU 3
Aux blower No. 4 is controlled by ACU 1
Aux blower No. 5 is controlled by ACU 2
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 18 >

19. Engine Control System Hydraulic Pumps

MAN B&W Diesel
El-pump 1 controlled by ACU 1
El-pump 2 controlled by ACU 2
Eng.driven pump 1 controlled by ACU 1,
- Pressure controlled / follow mode
Eng.driven pump 2 controlled by ACU 2,
- Pressure controlled / follow mode
Eng.driven pump 3 controlled by ACU 3,
- Pressure controlled / follow mode
Eng.driven pump 4 controlled by ECU A,
- On-OFF
Eng.driven pump 5 controlled by ECU B,
- On-OFF
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 19 >

20. ME Starting Air System

MAN B&W Diesel
MC-C design
ME-C design
Pilot air inlet
Blow-off
NC-valves
Connection
for
ECS
Starting air
distributor
Starting valves
© MAN B&W Diesel
Starting valves
< 20 >

21. Starting air- and pilot air valve

Starting airand pilot air valve
MAN B&W Diesel
Starting air valve
Pilot air valve
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 21 >

22. Engine Control System Control Panels

MAN B&W Diesel
Bridge Control system is
connected to EICU
Engine Control Room Panel is
connected to EICU
Local Operating Panel LOP is
connected to ECU
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 22 >

23. Main Operation Panel (MOP)

24. Main Operating Panel MOP

25. Main Operating Panel MOP

26. Local Operating Panel (LOP) with telegraph

27. Local Operating Panel (LOP) Without telegraph

28. Engine Control System Tacho System

MAN B&W Diesel
There are 2 redundant tacho systems.
System A
System B
Standard is:
angle encoders with one
reference sensor on the flywheel
(A-system)
Option is sensors at the flywheel
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 28 >

29. Tacho system

MAN B&W Diesel
MMA
Q2A
Q1A
MMB
Q1B
System A (powered from ECU A)
Q2B
MMA = Marker Master A
MSA = Marker Slave A
Q1A = Quadratur 1A
Q2A = Quadratur 2A
MSA
System B (powered from ECU B)
MMB = Marker Master B
MSB = Marker Slave B
Q1B = Quadratur 1B
Q2B = Quadratur 2B
Trigger ring
pos. 1
MSB
Semi-circular
marking ring
pos. 2
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 29 >

30. ME Tacho-system

31. ME Tacho-system

32. Angle encoder – 12K98ME

33. ME Tacho-system

MAN B&W Diesel
• 2 redundant set of sensors.
• Each set measure engine speed
and crankshaft position for
synkronisation of the control
events.
• Each set consist of four sensors.
Two quadrature sensors measure on
a trigger ring with 360 tooth and two
marker sensors measures on one
tooth – a semicircular ring.
Triggersegment with a sine-curved toothprofile The total trigger ring is build by 8
equal segments.
© MAN B&W Diesel
2200/OZS/030212
2006-01-06
< 33 >

34. Tacho sensors Nordic Brasilia – 6S70ME-C

35. Tacho sensors, replacement

MAN B&W Diesel
Sensing distance to the highest point on the trigger / marker ring:
1.0 mm
The highest point is marked [T]
Highest point
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 35 >

36. Quadratur sensor

MAN B&W Diesel
Status LED
Ahead turning towards the dot
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 36 >

37. Performance curves

MAN B&W Diesel
By changing the exh. Valve timing, the Pcomp can be
adjusted, and then the Pmax can be kept constant in a
bigger range.
The maximum pressure jump is the same as for MC
engine because the combustion chambers are
identical.
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 37 >

38. Exhaust valve timing

MAN B&W Diesel
Exhaust valve movement
80
70
60
Early closing
mm
50
Late closing
40
Early opening
Late opening
30
Reference
20
10
0
90
110
130
150
170
190
210
230
250
270
290
Dg. C. A.
© MAN B&W Diesel
< 38 >

39. Pneumatic system

MAN B&W Diesel
2 valves for redundancy
No. 30 connected to ECU A
No. 32 connected to ECU B
© MAN B&W Diesel
ME Concept - Tom Ballegaard/4140
2006-01-06
< 39 >

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