Surging Of The Turbocharger; Table 28: Malfunctions During Operation - Charge Air Pressure Too High; Table 29: Surging Of The Turbocharger - ABB HT604904 Operation Manual

Operation Manual / A170-M.. - A175-M..
8 Troubleshooting / 8.3 Surging of the turbocharger
Charge air pressure too high
Engine performance and engine speed unchanged, suction condition normal
Possible causes
Turbochar- Manometer display not correct
ger
Engine Malfunction in the injection system
Injection mistimed
Engine performance higher than indic-
ated
Table 28: Malfunctions during operation – Charge air pressure too high
8.3

Surging of the turbocharger

CAUTION
Continuous or periodic surging
If the turbocharger surges continuously or periodically, parts of the tur-
bocharger may be damaged.
Gradually reduce the engine load.
u
Have the cause clarified and remedied immediately by an ABB Turbochar-
u
ging Service Station.
Have parts assessed for damage and, if necessary, replaced by an ABB
u
Turbocharging Service Station.
Surging of the turbocharger
Possible causes
Turbocharger Filter silencer or diffuser contamin-
ated
Heavy dirt deposits in the turbine or
in the nozzle ring
Engine Protective grating in front of the tur-
bocharger contaminated or damaged
Charge air Cooler contaminated
cooler
Charge air duct blocked
Table 29: Surging of the turbocharger
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Remedy
Replace manometer
Repair or contact manufacturer
Set correctly
Check engine performance
Remedy
Clean (Periodic maintenance
Clean/replace
Clean
HZTL4033_EN
→53)
Rev.G December 2020