State the difference between ME and MC engine
The me
series of enignes have no cam shaft. Instead ,to provide power for fuel
injection and exhaust valve lifting, they utlise a hydraulic oil loop with
injection and exhaust valve lifting, they utilise a hydraulic oil loop with
fine filtered oil from the main engine lubricating system at about 200bar
pressure. The advantages of the ME series of enignes come from the fact that
the timing and intensity of the fuel oil injection and exhaust valve opening
and closing is optimal and intensity of fuel oil injection and exhaust valve
opening and closing is optimal at all steady and transient loads, thus giving
lower part load fuel oil consumption, lower emissions and particularly smoother
and better low load operation. The balance between cylinders will be easier to
adjust smooth operation.
With
improved combustion due to the electronic control of fuel injection.
The
following parts are omitted..
Chain
drive
Chain
wheel frame
Chain box
on frame box
Camshaft
with cams
Roller
guides for fuel pumps and exhaust valves
Fuel
injection pumps
Exhaust
valve actuators
Starting
air distributors
Governor
Regulating
shaft
Mechanical
cylinder lubricator
Local
control stand
The above
mentioned parts are replaced by
Hydraulic
power supply HPS
Hydraulic
cylinder units HCU
Engine
control system ECS controlling the following
Electronically
profiled injection EPIC
Exhaust
valve actuation
Fuel oil
pressure boosters
Start and
reversing sequences
Governor
function
Starting
air valves
Auxiliary
blowers
Crankshaft
position sensing system
Electronically
controlled alpha lubrication
Local
operating unit LOP
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