WÄRTSILÄ PAAE051728, Instruction Manual

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23.4.1 WEnCoM-functions
The WEnCoM is divided into two parts: the safety functions
included in the WECS and the trend diagrams implemented in
the external system. The external system in this meaning is any
control, alarm or monitoring system connected to the WECS. The
temperature measuring of the cylinder liners, main bearings and
the exhaust gas valves, the checking against alarm power reduc-
tion and shutdown levels and the needed mathematical opera-
tions are all included in the WECS. The presentations of all
measured and calculated data should be implemented, according
to the recommendations, in the external system connected to the
MCU. Depending on engine type and size the amount of sensors
included for the WEnCoM-functions may vary.
23.4.1.1 Cylinder liners
The cylinder liner temperature reveals not only the condition of
the liner, but also those of the piston and the piston rings, see Fig
23-7. The cylinder liner temperature is measured with two sen-
sors. Alarm, power reduction or shutdown is generated if the
values exceed specified limits. The updating frequency is 1 Hz.
Temperature sensors in the cylinder liner
It is recommended to have trend diagrams of the cylinder liner
temperatures in the external system.
Fig 23-7
080209A9503
23 Instrumentation and Automation 32-200115/II
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