TPS turbocharger – turbine cleaning in operation
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24 ABB charge! 2|13 Tips for the operator T urbochargers operated on HFO are exposed to fouling and deposits originating from the engine’s exhaust gases. The extent of the turbine side fouling depends on various factors, such as fuel quality, the engine operating point or combustion quality. Fouling reduces the turbocharger’s efficiency and results in both higher exhaust gas temperatures and increased fuel consumption. Regular turbine cleaning also helps to keep engine performance up to design power. Two turbine cleaning methods The ABB Turbocharging water washing system allows turbine cleaning while operating at reduced load. Two methods are in use. A procedure with a short water injection time (3 30 seconds) is permissible on any turbocharger turbine casing. The long water injection proce- dure (ten minute wash) was first intro- duced with the latest turbine casings, which feature an additional gasket between the turbine casing and the bearing casing (TH22, TH32 and TH42). The ABB Turbocharging water washing system allows turbine cleaning while operating at reduced load. TPS turbocharger – turbine cleaning in operation A ten minute turbine washing procedure for TPS turbochargers operating in HFO applications. Text Fabian Wittmer, Photography Michael Reinhard
Transcript of TPS turbocharger – turbine cleaning in operation
24 ABB charge! 2 |13
Tips for the operator
Turbochargers operated on HFOare exposed to fouling anddeposits originating from theengine’s exhaust gases. The
extent of the turbine side foulingdepends on various factors, such as fuelquality, the engine operating point orcombustion quality. Fouling reduces theturbocharger’s efficiency and results in
both higher exhaust gas temperaturesand increased fuel consumption. Regularturbine cleaning also helps to keepengine performance up to design power.
Two turbine cleaning methodsThe ABB Turbocharging water washing
system allows turbine cleaning whileoperating at reduced load. Two methods
are in use. A procedure with a shortwater injection time (3 � 30 seconds) ispermissible on any turbocharger turbinecasing. The long water injection proce-dure (ten minute wash) was first intro-duced with the latest turbine casings,which feature an additional gasketbetween the turbine casing and the bearing casing (TH22, TH32 and TH42).
The ABB Turbocharging water washing system allows turbine cleaning while operating at reduced load.
TPS turbocharger – turbinecleaning in operationA ten minute turbine washing procedure for TPS turbochargersoperating in HFO applications.
Text Fabian Wittmer, Photography Michael Reinhard
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Tips for the operator
Field experience and tests haveshown improved cleaning results withthe ten minute washing procedure.Especially good results were obtainedwhen washing with the engine idling.
RecommendationIn cases where operators experience
inadequate results when cleaning withshort water injection, ABB Turbochargingrecommends changing to the ten minuteprocedure, regardless of the casing type.
On turbochargers without the addi-tional gasket, long water injection maylead to minor water leakage between thebearing casing and the turbine casing.This is due to unequal thermal expansionduring the long water injection proce-dure. The water leakage represents norisk to the turbocharger and it is up tothe operator to judge whether a potentialtemporary leakage is permissible from anoperational point of view.
Regardless of the chosen washingprocedure, the exhaust gas temperaturelimits described in the operation manual
must be maintained carefully. Failure toprecisely observe the washing proce-dures may drastically shorten the servicelife of the components.
The detailed washing procedures aredescribed in the operation manual. Forquestions concerning washing, or toobtain the latest operation manual,please contact your local ABB ServiceStation. Fabian Wittmer was awarded an
M.Sc. in engineering science in 2007from the ETH Zürich. He has beenManager Technical Service at ABBTurbocharging since 2008. Hisresponsibilities comprise technicalsupport for engine builders, end usersand ABB Service Stations as well as claims management and technicalinvestigations.
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Is there any Tip for the Operator youwould like to see covered on thispage? If there is a particular difficultyyou have faced lately and managedto solve, please share your fieldexperience with other operators.Contact us and tell us about yourturbocharger technical concerns [email protected].
Washing procedure
The three phases of the ten minutes washing procedure: Cool-down, cleaning, drying.
Eng
ine
load
Time
min 10 min
Cool-down
10 min
Cleaning
min 10 min
Drying
