3吨柴油动力货车设计（后驱动桥与后悬架设计）翻译外文1

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1、fuelelectronicsAsoilgetsmoreexpensive,carmakersarelookingatenginemanagementsystemsthatcancopewithincreasinglevelsofethanol.Oilproductioncouldpeakbetween2010and2O2O.Whenithappens.oilconsumptionwillbecomemoreimportantthannewdiscoveries;andcrudeoilpriceswillriseandrise.Transpo

2、rtisthedominantsectorintermsofoiluseandmotorvehicleswillhavetobecomemorefuelefficient.Vehiclesarethelargestsourceofpollution.Regulationshaveaddressedtheproblemfortransportationandrealimprovementshavebeenachieved,particularlyinleadandcarbonmonoxidelevels.Butsomelong-termemis

3、sionshavenotbeenconsidered.Thisisparticularlyevecaseforgreenhousegasemissions;carbondioxideinparticular.Toprotecttheirlivelihoods,carmakersareinvestigatingtechnologiesandalternativefuelsthateitherreduceoilconsumptionorcutemissions.Ethanolisstartingtobecomemoreattractiveasit

4、canbeusedflexibly・ThedrivercanrunonstandardgasolineoronTheenginemanagementsystemisanessentialpartofsuchsystems5success,saysFrenchTierOnesupplierValeo:“TheycontrolTorque,ancillarysystems,diagnoseservicingissuesand,mostimportantly,emissions；Torquecontrolfeaturesdeliverenginer

5、esponseswithlevelsofdrivabilityandaccelerationinagreementwithusers5requests.Enginetorquecontrolalsoco-proratesfunctionssuchastractioncontrol,cruisecontrol,transmissionsandbrakes.Emissionsbreakdownintothreemainareas:thosefromtheexhausttailpipe;refuelinglossesandevaporativeem

6、issions.Theissueistocomplywithemissionregulationsandminimizefuelconsumption.Thisisachievedthroughdedicatedafter-treatmentcomponentssuchascatalyticconverters,sensorsandelectro-mechanicalactuators.Thewaytheenginemanagementsystemcontrolstorqueandemissioniscomplex.Thequantities

7、ofairandrecycledexhaustgasesenteringtheenginearepreciselymanagedwithdedicatedsensorsandactuators.Therightair/fuelmixforthecatalysttoworkproperly.Themixhastoigniteattherighttime.Thethree-waycatalystthenhastokeepfinalpollutantemissionsatacceptablelevels.Allthesefunctionsneedt

8、ocooperatewithotherelectronicunitsthroughdatabusesandeventuallywiredconnections.Fe