Engine-Engineandcrankcase
ElectronicallyVariableGeometryTurbocharger(eVGT)
RAIL15TR00383BA7
TheelectronicallyVariableGeometryTurbocharger
(eVGT)isusedontheTIER4AMagnum™370and
TIER4BMagnum™280,310,340and380..The
eVGTiselectronicallycontrolledbytheEngineControl
Unit(ECU).
RAIL15TR00395BA8RAIL15TR00394BA9
Vanesopen(lowboost)Vanesclosed(highboost)
TheeVGTusesaseriesofaerodynamicvanestodirectexhausttowardtheturbinecontrollingboththevelocityand
angletheexhaustcontactstheturbine.ThisgivestheECUtheabilitytodynamically“tune”theboostpressureatany
givenenginespeedandload,Improvingperformanceandfueleconomy.
Fullyopenthevelocityslowsandtheangleisdecreasedthereforetheturbineandcompressorturnslowerproducing
lessboost.Whenneeded,thevanescloseincreasingthevelocityandangle,thereforeincreasingturbineandcom-
pressorspeed,producinghigherboostanytimeitisneededacrosstheentireoperatingrangeoftheengine.
5143149922/02/2018
10.1[10.001]/9
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