PARAMETERS TO MONITOR DURING REGULAR OPERATION SR.NO PARAMETER UNIT VALUE REMARK 1 Oil pressure in main oil passage KPa 350~550 Rated speed and power 2 Oil pressure in main oil passage KPa ≥100 Idle speed 3 Oil temperature in oil sump °C 85~115 4 Engine oil temperature at normal operation °C 75~105 5 Coolant outlet temperature at normal operation °C 70~95 It should not exceed 95°C 6 Exhaust gas temperature after gas turbine °C 7 Inlet air temperature after air cooler °C 55 ± 5 Table 4.4 Before most of the failure, engine will develop early warning in the from of abnormal sound, changes in parameter and performance or engine appearance.
Close monitoring of the engine will help to detect the failure in the preliminary stage. Few signs, to look out for are as below: ‒ Leakage of oil fuel, coolant, compressed air or exhaust gas ‒ Color change in exhaust gas ‒ Rise/drop of pressure and temperature ‒ Excessive vibration ‒ Sudden unusual noise ‒ Misfiring of engine ‒ Rise in oil/fuel consumption ‒ Power loss Operation of diesel engine in winter 1. Fuel: Select and use the diesel of different brands according to the outdoor temperature in winter. 2. Oil: Select the oil with different viscosities according to different seasons. 3. Coolant:
Select and use different brands of anti-freeze additive and add additive in different quantity into the cooling system according to the outdoor temperature. 25