ME-B Concept
© MAN Diesel A/S
3 Engine groups
MC/MC-C:
1. Exhaust valve operated by a camshaft
2. Fuel injection operated by a camshaft
ME-C: ME-B:
1. Electronic controlled exhaust valve Exhaust valve operated by a light camshaft
2. Electronic controlled fuel injection Electronic controlled fuel injection
ECS: Starting air valves
ECS ECS: Governor function
ECS
Startt and Reversing sequences
Star Electronic
Electronically
ally Profiled
Profiled Injection (EPIC)
Governor function Hydraulic oil pressure
Auxiliary blowers Alpha Lubricator
Electronically
Electronic ally Profiled
Profiled Injection (EPIC)
Exhaust valve actuation
HPS
Alpha Lubricator
© MAN Diesel A/S
ME-B
The ME-B engines is designed with
Electronic fuel injection control
Cam shaft driven exhaust valve
Pressure boosters similar to the ME-
ME-C
300 bar hydraulic system
Hydraulic cylinder units serving two cylinders
One gas accumulator on each HCU
Electric driven hydraulic pumps
© MAN Diesel A/S
ME-B Electronic Injection
System Layout
Dual cylinder Camshaft driven
HPS
HCU Pressure boosters exhaust actuators
ELFI Light camshaft
Hydraulic oil rail Valves
© MAN Diesel A/S
ME-B
Dual Hydraulic Cylinder Unit (HCU)
Pressure booster
Alpha lubricator
with ACC
Accumulator
ELFI valve
Distributor block
© MAN Diesel A/S
ME-B
Dual Hydraulic Cylinder Unit (HCU)
© MAN Diesel A/S
ME
Fuel Injection System
High pressure pipe
Suction valve
Slide fuel
valve
Fuel pump
Fuel pump plunger
Fuel oil inlet
8 bar
Hydraulic piston
Membrane
ELFI proportional accumulator
valve
To drain
High pressure hydraulic oil inlet
© MAN Diesel A/S
ME-B
Hydraulic Power Supply (HPS)
HPS mounted
in for end
Lube oil inlet Boll Filter
© MAN Diesel A/S
ME-B
Layout of Hydraulic Power Supply (HPS)
Electric motor
Safety block
Hydraulic pump
Hydraulic oil 300 bar
Lube oil inlet
© MAN Diesel A/S
Hydraulic Power Supply
Oil filter (6 microns)
© MAN Diesel A/S
Hydraulic Power Supply
and safety block
© MAN Diesel A/S
ME-B
Layout of High Pressure Pipe
Hydraulic oil rail Safety block
from the safety
block to the HCU
300 bar
© MAN Diesel A/S
ME-B
Light Camshaft
Exhaust cam
Gear wheel for starting
air distributor
Chain wheel
© MAN Diesel A/S
ME-B
Mechanical/Hydraulic Diagram
HCU
HPS
BOLL filter
© MAN Diesel A/S
Engine Control System ME-B
Bridge
Bridge
panel
Main Main Engine Control Room
operating Control room operating
panel panel panel
Engine Room/On Engine
ESC
MPC MPC MPC MPC MPC
© MAN Diesel A/S
ME-B Engine Control System
CCU
HCU Valve control & supervision
Speed Governor
Local/Remote Selection
Shut Down Monitoring
EICU
HPS Control
Cylinder Lube Feedrate
Engine Running Mode
Slow Down Request Relay
General Alarm Relay
ECR/Bridge Selection
MOP
Display ECS data (diagnostics)
ECS Alarm Handling
SW/Parameter Handling
© MAN Diesel A/S
Multi Purpose Controller – (MPC)
(Standard) EICU-CCU-SCU
© MAN Diesel A/S
Multi Purpose Controller – (MPC)
(MPC 10) Can only be used as CCU for DOT 1 & 2 engines
© MAN Diesel A/S
ME-B
ECS
S40ME-B and S50ME-
S40ME- S50ME-B
Mounting of ECS
CCU
Connecting boxes
24 VDC
Power box
Safety system
S35ME-B
S35ME-
Mounted in engine room
© MAN Diesel A/S
ME-B
LOP
© MAN Diesel A/S
Encoder system same as ME/ME-C
© MAN Diesel A/S
Starting air distributer same as MC-C
© MAN Diesel A/S
DOT3 Engines (both SME-B & GME-B)
ME-B engines with variable exhaust valve timing
© MAN Diesel A/S
Variable Exhaust Valve Timing for ME-B
Principle
Hydraulic Push Rod…
...extended by adding
hydraulic oil
Control Valve
© MAN Diesel A/S
Variable Exhaust Valve Timing for ME-B
Basic principle: Gain: Reduced SFOC at part load
Shorter exhaust cams
Pmax limit
Earlier closing of exhaust valve
Increased Pcomp
Increased Pcomp allow higher Pmax
Existing ME-B
Increased Pmax result in lower SFOC Future ME-B
Timing unit activated at high load to
keep Pmax limit 5 g/kWh
Previous cam
New short cam
Load [%]
© MAN Diesel A/S
Variable Exhaust Valve Timing for ME-B
Utilisation
Exhaust valve lift [mm]
High load
Low load
Closing
delayed
Crank angle
© MAN Diesel A/S
Variable Exhaust Valve Timing for ME-B
Exhaust valve closing delayed by adding oil
New ME-B8/9 DOT3
Added features:
Previous design
Timing unit
Hydraulic pipe
Feed-back sensor
New control valve
MPC10 MPC
ELFI-V Control Valve
© MAN Diesel A/S
Variable Exhaust Valve Timing for ME-B
Timing piston: Adds oil to the actuator Hydraulic connection pipe
Feed-back sensor Control valve
© MAN Diesel A/S
Variable Exhaust Valve Timing for
ME-B
© MAN Diesel A/S
RotComp
External mounted compensator
2”order moment compensation done
with external mounted RotComp
RotComp control will be integrated
in Engine Control System ( ECS )
© MAN Diesel A/S
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.
© MAN Diesel A/S
