MAN B&W S65ME-C8.2-GI-TII, Project Manual

Page: 299 / 395

MAN B&W 16.00
Page 3 of 3
MAN Diesel MAN B&W ME-GI engines 198 89 30-0.2
Fig. 16.00.03: ME-GI-ECS configuration
178 65 90 2.1
GI extension main components
The GI extension is based on two components:
• The multi-purpose controller (MPC)
• The data acquisition and supervision unit (DASU).
The MPCs are the same hardware units as used
in the standard ME-ECS, and spare units can be
used in any MPC position of the ME-GI-ECS.
The GCSU units, that are based on DASU units,
supervise and analyse the combustion in real time
in order to be able to cut off the gas combustion
fast in case of, e.g., misfiring or leakage in the in-
jection equipment, see Fig. 16.00.03
Control units
The gas plant control unit (GPCU) and gas auxil-
iary control unit (GACU) perform the task of bring-
ing the gas system from ‘no gas on engine’ to ‘gas
running’ and back again.
Safety units
The gas plant safety unit (GPSU) monitors specific
gas plant safety sensors and, in case of a failure,
it carries out a gas shutdown.
The gas cylinder safety unit (GCSU) monitors the
specific cylinder sensors, and every single gas in-
jection and combustion is supervised.
In case of a failure, the window valve acts as a gas
shutdown valve and closes immediately. The ELWI
valve controlling the window valve is electrically
wired to this unit.
Safety system
ECU
B
ACU 3
EICU B
EICU A ACU 1
ACU 2
CCU
ECU CCU GACU GPCU GPSU
CCU
A
2
1
n
FIVA
Fuel oil
injection
Gas
injection
V
alve contr
ol
V
alve Ok
Window
valve
ME-ECS
GI safety control
GI plant control
ME-ECS GI injection
GCSU
GCSU
GCSU
V
alve contr
ol
V
alve Ok
V
alve enable
MOP A/B
ELGI
ELWI