M266发动机++附加内容要点.docx

M266发动机++附加内容要点.docx

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M266发动机++附加内容要点

M266发动机附加内容

06.01.2009

M266发动机某些设备和功能目前还未能在中国市场应用，作为附加内容列出。

Partialloadventilation（turbochargedengine）

Ontheturbochargedengine,thepartialloadventilationtakesplaceovertheinterior

crankcaseduct,aswiththenaturallyaspiratedversions,fromthereoverahose

connectionwithcheckvalvetotheintakemanifold.

Fullloadventilation（turbochargedengine）

Duringfullloadventilation,thelineofthepartialloadventilationisclosedbythechargerpressurepresentonthecheckvalve.Theairseparatedfromoilinthecycloneseparator

isfedtothechargerairlineaftertheairfilter.

Freshair

Cycloneseparatorsareusedfortheseparationofblow-bygases.

Theblow-bygasesinthecycloneunitaresetintoarotatingmovementforthis.

Fullloadventilation

Theoilpartseparatesduetotheoccurringcentrifugalforcesanddripsbackintothecrankcase.

Partialloadventilation

1Engineblock

2Cylinderhead

3Three-partcylinderheadcover

4Intakemanifold

5Intakeairlineto

exhaustturbocharger

6Draintube

7Ventduct

8Venthose

9Checkvalve

10Cycloneseparator

11Partialloadventilationand

fullloadventilation

Integrationintovehiclenetwork—Turbochargedengine

Turbochargedenginelegend

1Activatedcharcoalcanister

2Fueltank

A1Instrumentcluster

A1e26CHECKENGINEindicatorlamp（USA）

A1e58Enginediagnosisindicatorlamp

A16Knocksensor

B4/3Tankpressuresensor（USA）

B6/1Camshafthallsensor

B11/4Coolanttemperaturesensor

B17/8Intakeairtemperaturesensor

B28Intakemanifoldpressuresensor

B28/5Pressuresensordownstreamofaircleaner

B28/6Pressuresensorupstreamofthrottlevalveactuator

B37Acceleratorpedalsensor

G2Alternator

G3/1Oxygensensorbeforecatalyticconverter

G3/2Oxygensensoraftercatalyticconverter

K100kIAirinjectionrelay（USA）

K100kKFuelpumprelay

K100kMStarterrelay

L5Crankshaftpositionsensor

M1Starter

M3/3Fuelfeedmodule（fuelpump）

M4/7Electricsuctionfanengine/airconditioningcontrolunit

withintegratedcontrol

M16/6Throttlevalveactuator

M33Electricairpump（USA）

N2/7Restraintsystemscontrolmodule（SRS）

N3/10Enginecontrolunit（SIM 266）

N15/5ESMcontrolunit

N22AACcontrolandoperatingunit

N22/7ComfortAACcontrolandoperatingunit

N47-5ESPcontrolunit

N73EIScontrolunit

N80Steeringcolumnmodulecontrolunit

N93Centralgatewaycontrolunit

S40/3Clutchpedalswitch

S40/4Cruisecontrolswitch

S40/5Startenableclutchpedalswitch（USA）

S43/1Oilpressureswitch

S43/2Oilpressureswitchhigh

T1/1Ignitioncoilcylinders1/2

T1/2Ignitioncoilcylinders3/4

X11/4Datalinkconnector

Y3/9CVTelectrohydrauliccontrolunit

Y19/2Airconditioningwatervalve

Y31/5Boostpressurecontrolpressuretransducer

Y32Airpumpswitchovervalve（USA）

Y58/1Regenerationswitchovervalve

Y58/4Activatedcharcoalfiltershutoffvalve（USA）

Y62Fuelinjectionvalves

Y101Divertairswitchovervalve

Locationofcomponents（Turbochargedengine）

Y58/1PurgeControlValve

Coolantfeedline

Coolantreturnline

Oilreservoirventilation

Oilreturnline

T1/2

T1/1Ignitioncoil

B6/1Camshaft

positionsensor

7Oilreservoir

ventilation

8Coolantreturnline

6Oilreturnline

A16Knocksensor

B11/4Coolanttemperaturesensor

1Airfilterhousing

2Turbocharger

3Chargervacuumcell

4Damping

5Exhaustmanifold

6Turbochargeroilreturnline

7Turbochargeroilreservoirventilation

8Coolantreturnline

9Coolantfeedline

M16/6Throttlevalveactuator

N3/10Enginecontrolunit

1Airfilterhousing

2Oilfilterhousingwithoil-waterheatexchanger

3Intakemanifold

4Vacuumtank

S43/1Lowpressureoilpressureswitch

S43/2Highpressureoilpressureswitch

N3/10Enginecontrolunit

Pressuresensor（B28）—（Turbochargedengine）__Chargeairpipe/intakemanifold

Thepressuresensor（B28）islocatedontheintakemanifoldandsuppliesthecontrolunitwiththecurrentintakemanifoldpressure,whichisusedinconjunctionwiththeintakeairtemperature（B17）forthecalculationoftheairvolume.

Thepressuremeasurementrangeis0.2to2.5bar.

Thispressuresensorismarkedwithabluesticker.

Intakeairtemperaturesensor（B17）—（Turbochargedengine）

Theintakeairtemperaturesensor（B17）,locatedintheintakemanifold,capturestheintakeairtemperature,whichisused,togetherwiththeintakeairthrottle,bytheMESIMcontrolunitforthecalculationofthefedairvolume.

GT09.00_0021_C11

Ambientpressuresensor—（Turbochargedengine）

ThepressuresensorisintegratedintheMESIMenginecontrolunit（N3/10）andmeasurestheambientpressure.Thissignalisusedforheightadaptation.

Pressuresensor（B28/5）—（Turbochargedengine）__Downstreamofaircleaner

Thepressuresensor（B28/5）islocatedintheairlinebetweentheairfilterandturbochargerandcapturesthecurrentintakemanifoldpressurebeforetheturbocharger.

Thissignalisreadintheenginecontrolunitandisusedfortheprotectionoftheturbochargerwiththesignalofthepressuresensor（B28/6）.

Thispressuresensorismarkedwithagreensticker

P07.04-2407-01

Pressuresensor（B28/6）—（Turbochargedengine）__Upstreamofthrottlevalve

Thepressuresensor（B28/6）islocatedinthechargeairpipebetweenthethrottlevalveactuatorandturbochargerandcapturesthecurrentchargerpressure.

Thissignalisthemaincontrolvariableofthechargepressureregulation（max.boostpressure0.7bar）

Thepressuremeasurementrangeis0.2to2.5bar.

Thispressuresensorismarkedwithabluesticker.

P07.04-2407-01

Turbochargedengineairducting

Anexhaustturbochargerwithchargeaircoolingisusedforthecompressionandcoolingtoincreasethepowerandtorque.

Theairflowsfromtheairfilterthroughanairlinetotheexhaustturbocharger.

Theaircompressedinthechargerflowsthroughachargeairpipetothechargeaircooler,whichislocatedinfrontoftheengineasseeninthedirectionoftravel.

Afurtherchargeairpipeconnectsthechargeaircoolerwiththethrottlevalveactuator,whichislocatedonashortintakemanifoldbetweencylinder2

and3.

1Airfilter

2Airline

3Exhaustturbocharger

4Vacuumunit

Chargepressurecontrol

5Pulsationdamper

6Chargeairpipetochargeaircooler

7Chargeaircooler

8Chargeairpipetointakemanifold

9Intakemanifold

B5/1Chargerpressuresensor

B17Chargerairtemperaturesensor

B28Pressuresensor

B28/6Pressuresensorbeforethethrottlevalveactuator

AFreshair

BHotchargerair

CCooledchargerair

DExhaust

Turbochargedengineintakemanifold（chargeairpipe）

TheturbochargedengineintheAandB-Classhasashortintakemanifoldwithoutselectordrum（variableintakemanifold）.Theintakemanifoldcontainsanintegratedvacuumtankforthelowpressure（vacuum）supply.

Acheckvalveisfittedinthevacuumsupplylinebetweentheintakemanifoldandthevacuumtank.

Thefittingdirectionmustbeobservedwhenfittingthevalve（markedbyanarrowonthevalve）.

Themountsfortheintakeairtemperaturesensor,purgevalveandintakemanifoldpressuresensorarelocatedonthetopsideoftheintakemanifold.

Turbocharger,General

Thewater-cooledexhaustturbochargerfromBorgWarnerismadeofcaststeelandisweldeddirectlywiththeair-gapinsulatedsheetmetalexhaustmanifold（LSI）,whichwasdevelopedespeciallyforthechargerengine.

Theturbochargerhasapneumatic（chargerpressure）actuatedwastegatevalveforcontrolofthechargerpressureaswellasadecelerationairvalvetoavoidwhistlingnoisesindecelerationmode.

1Exhaustturbocharger

2Vacuum（pressure）cell

3Pulsationdamper

4Decelerationairvalve

5Airgap-insulatedexhaustmanifold

6Oilreservoir

GT09.40_0033_C11

Note

Foroilleakageatturbocharger（ATL）:

CleanoilyspotsontheATLandlocatetheleakusingcontrastspray.Itisusuallyonlytheconnectionsoftheoil-conductinglinesthatareleaky.Inthiscase,replacesealingringsofthebanjoboltsandtightentotheprescribedtorque.

Exhaustturbochargerdesign

Theexhaustgasesarefedthroughtheairgapinsulatedexhaustmanifold（LSI）intheturbinehousingontotheturbinewheel.Theflowenergyoftheexhaustgasescausestheturbinewheeltorotate.Thiscausesthecompressorturbine（impeller）wheel,whichisconnectedbyashafttotheturbinewheel,tobedrivenwiththesamerpm.Thefreshairsuckedinbythecompressorturbine（impeller）wheeliscompressedandfedtotheengine.

Theshafthousingoftheexhaustturbochargeriscoolant-cooledandconnectedtotheenginelubrication.

Anoilreceptacle（reservoir）preventsoilremaininginthebearingpointsoftheturboonextremetiltingofthevehicle.

ØMax.turbinespeedupto202,500rpm

ØMax.boostpressure0.7bar

1Turbohousing

2Exhaustturbine

3Intakeairturbine

4Exhaustmanifold

5Catalyticconverter

Weldingarea

Thecombinationofexhaustmanifoldandturbochargeraswellastheperipheralcomponentssuchasthewastegateanddecelerationairvalveto

oneunitoffersthefollowingadvantages:

∙Compactdesign

∙Uniformtemperaturedissipationovertheexhaustmanifoldandchargerunit

∙Omissionofasealingpoint

∙Fasterresponseofthecatalyticconverter

Theexhaustturbochargerhasaboostpressurecontrolvalve,theso-calledwastegatevalve.Thisallowstheexhaustflowtocircumventtheturbineside,whichisusedfortheregulationofthechargerpressur