SSP337 The 2.0l FSI engine with turbocharger - VolksPage.Net

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Engine mechanicsThe cylinder headTurbo-specific changes were made to thecylinder head (with regards to the 2.0l FSI):●●●●Sodium filled exhaust valvesArmoured inlet and exhaust valve seatsStrength-optimised roller rocker fingers withreduction in web width from cams and rollersValve springs with increased spring forces(same valve springs for inlet and exhaustvalves)Furthermore, the inlet port geometry wasmodified. This enabled the tumble effect andthereby the knock resistance and smooth runningproperties to be improved.2.0l 4V FSI 2.0l 4V T-FSIS337_015S337_01610
The crankcase breather systemThe constant vacuum in the crankcase is assuredby a separate breather system for crankcase andcylinder head.The blow-by gases emerging from the crankcaseare passed via the primary oil separator in the oilfilter module to the cylinder head cover.When this happens, the blow-by gases aremixed with those from the cylinder head and arepassed through a labyrinth, where further oilseparation occurs.Since turbo operation requires more complicatedpressure control, there is a two-stage pressurerelief valve on the cylinder head cover, whichchannels the blow-by gases to the intakemanifold or turbocharger. When there is vacuumin the intake manifold, the blow-by gases are feddirectly to the intake manifold.In the case of charge pressure, a non-returnvalve closes in the pressure relief valve housing.The blow-by gases are fed to the turbochargervia a channel in the cylinder head cover. Torecognize an incorrectly installed pressure reliefvalve, a so-called diagnosis port has beenintegrated. Incorrect installation forcesunmetered air via the sealing area of thepressure relief valve into the cylinder head cover.The reaction of the lambda probe results indiagnosis of the unmetered air and a fault is thenstored in the memory.With charge pressure before turbochargerWith vacuum to intake manifoldGas outlet to turbochargerLabyrinth in cylinder head coverGas outlet tointakemanifoldPrimary oilseparatorOil filter moduleNon-return lockingvalvePressure reliefvalveDiagnosischannelNon-return lockingvalveS337_01711
Page 1 and 2: Service TrainingSelf-study programm
Page 3 and 4: At a glanceIntroduction . . . . . .
Page 5 and 6: In order to meet the higher levels
Page 7 and 8: The crankshaftThe component strengt
Page 9: The toothed belt drive mechanismAs
Page 13 and 14: The turbocharger with new flange fi
Page 15 and 16: The electric overrun air recirculat
Page 17 and 18: The tumble flapsSince the engine is
Page 19 and 20: Modes of operationThe turbocharged
Page 21 and 22: J538Control unit forfuel pumpGG6Fue
Page 23 and 24: G336 Intake manifold flap potentiom
Page 25 and 26: Special toolsDesignation Tool Appli
Page 27 and 28: Notes27

SSP337 The 2.0l FSI engine with turbocharger - VolksPage.Net

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