23.4.1.2 Main bearings
The temperature of the main bearing is monitored with the sensor
in direct contact with the bearing shell, see Fig 23-8. Alarm, power
reduction or shutdown is generated if the values exceed specified
limits. The updating frequency is 1 Hz.
Temperature sensors of the main bearing
It is recommended to have trend diagrams of the main bearing
temperatures in the external system.
23.4.1.3 Exhaust gas valves
The condition of the exhaust gas valve is monitored with a sensor
measuring the exhaust gas temperature behind the exhaust gas
valve, see Fig 23-9. A burned spot on the valve disc will, in time,
result in an increasing temperature fluctuation because of the
rotation of the valves. A malfunctioning valve can be discovered
by analyzing the cyclic variations in exhaust gas temperatures.
The exhaust gas temperatures are analyzed by performing FFT
and statistical evaluations of the temperature values.
Each cylinder head is fitted with two exhaust gas temperature
sensors; one for each exhaust valve.
Fig 23-8
080209B9503
32-200115/II
Instrumentation and Automation
23
WÄRTSILÄ 32
23-17
Summary of Contents for PAAE051728
Page 4: ......
Page 18: ...Appendix B Welding Precautions 200640 00 6...
Page 26: ...01 Main Data Operating Data and General Design 32 200634 01 01 8 W RTSIL 32...
Page 60: ...Appendix A Environmental Hazards 200507 02A 10...
Page 68: ...Page 7 7 Document No 4V92A0645 Rev j...
Page 84: ...03 Start Stop and Operation 32 200402 04 03 12 W RTSIL 32...
Page 98: ...04 Maintenance Schedule 32 200623 01 04 14 W RTSIL 32...
Page 154: ...07 Tightening Torques and Use of Hydraulic Tools 32 200643 01 07 30 W RTSIL 32...
Page 162: ...08 Operating Troubles Emergency Operation 32 200402 01 08 8 W RTSIL 32...
Page 164: ...Specific Installation Data 2005 01 09 2...
Page 178: ...10 Engine Block with Bearings Oil Sump and Cylinder Liner 32 200150 10 14 W RTSIL 32 34SG...
Page 216: ...Appendix A Testing of cylinder tightness 32 200142 A 4 W rtsil 20 32 34...
Page 226: ...13 Camshaft Driving Gear 32 200546 02 13 10 W RTSIL 32...
Page 254: ...15 Turbocharging and Air Cooling 32 200549 10 15 20 W RTSIL 32...
Page 274: ...16 Injection System 32 200627 01 16 20 W RTSIL 32...
Page 280: ...Fuel System 32 200508 07 17 6 W RTSIL 32...
Page 314: ...19 Cooling Water System 32 200050 19 14 W RTSIL 32...
Page 394: ...23 Instrumentation and Automation 32 200115 II 23 60 W RTSIL 32...