Somo 1Njia ya ulowazi wa hewa: filter ya hewa, manifold ya ulowazi, na sababu za vizuiziSehemu hii inachunguza njia ya ulowazi wa hewa ya dizeli kutoka filter hadi bandari, ikiwa ni pamoja na media ya filter, makazi, ducting, manifolds, na vifaa vya swirl, pamoja na sababu za kawaida za vizuizi, njia za kupima, na mikakati ya matengenezo.
Air filter media types and efficiency ratingsFilter housings, pre‑cleaners and snorkelsIntake duct routing, resonators and leaksManifold design, runners, swirl and tumbleSources of restriction, dust and ice buildupMeasuring restriction and service intervalsSomo 2Sindikasheni ya shinikizo la juu: common rail dhidi ya pump‑line‑nozzle na misingi ya pampu ya sindikasheni kimakanikaSehemu hii inaelezea uzalishaji na udhibiti wa shinikizo la juu la mafuta ya dizeli, ikilinganisha common rail na pump‑line‑nozzle, na kutoa maelezo ya pampu za kimakanika inline na rotary, wakati, udhibiti wa shinikizo, na hali za kawaida za uchakavu au kushindwa.
Common rail layout, pressure control and sensorsPump‑line‑nozzle architecture and timing effectsInline mechanical pump elements and cam profileRotary/distributor pump operation and advancePressure waves, line length and injection shapingTypical high‑pressure leakage and test methodsSomo 3Kazi ya intercooler, hasara ya shinikizo, fouling na mazingatio ya kusafishaSehemu hii inaelezea kusudi na utendaji wa intercooler, ikilinganisha muundo wa hewa-kwa-hewa na hewa-kwa-maji, ikishughulikia hasara ya shinikizo, fouling, uvujaji, njia za kusafisha, na jinsi joto la charge-air linavyoathiri nguvu na uzalishaji wa hewa chafu.
Charge‑air cooling benefits and heat transferAir‑to‑air versus air‑to‑liquid intercoolersPressure drop, flow balance and sizingOil fouling, soot deposits and leak pathsCleaning methods, flushing and drying stepsTesting for leaks and performance lossSomo 4Vipengele vya ziada: muhtasari wa EGR, misingi ya PCV/ventilation, sensor zinazohusiana na dizeli (MAP/MAF, joto la coolant, shinikizo la mafuta)Sehemu hii inaangalia vipengele vya ziada vya dizeli muhimu, ikiwa ni pamoja na EGR na crankcase ventilation, pamoja na sensor muhimu kama MAP, MAF, joto la coolant na shinikizo la mafuta, na jinsi zinavyoshirikiana na kitengo cha udhibiti cha injini.
EGR purpose, flow control and cooler issuesPCV and crankcase ventilation arrangementsMAP sensor role, mounting and failure modesMAF sensor types, contamination and testingCoolant temperature and oil pressure sensingSensor data use in diesel ECU strategiesSomo 5Mfumo wa upinzaji: radiator, pampu ya maji, thermostat, aina za coolant na sababu za joto la juuSehemu hii inashughulikia mpangilio na utendaji wa mfumo wa upinzaji wa dizeli, ikiwa ni pamoja na radiator, pampu ya maji, thermostat, kemistri ya coolant, njia za mtiririko, na sababu za kawaida za joto la juu, pamoja na uchunguzi, vipimo, na mazoea ya matengenezo ya kinga.
Coolant flow path and heat transfer basicsRadiator, fan, shroud and airflow managementWater pump design, drive types and failuresThermostat operation, testing and replacementCoolant types, mixing rules and corrosion controlDiagnosing overheating and hot‑spot conditionsSomo 6Injectors: aina za nozzle, mifumo ya spray, dalili za uchakavu, na athari za uvujajiSehemu hii inalenga muundo na kazi ya injector ya dizeli, ikishughulikia aina za nozzle, mifumo ya spray, shinikizo la kufungua, dalili za uchakavu na coking, athari za uvujaji kwenye uzalishaji wa hewa chafu na nguvu, na mazoea ya msingi ya vipimo na huduma.
Pintle, hole‑type and multi‑hole nozzlesSpray pattern, atomization and penetrationInjector opening pressure and pop testingNozzle coking, erosion and seat wearInternal leakage, dribble and misfire effectsBasic cleaning, replacement and codingSomo 7Vipengele vya turbocharger na utendaji: turbine, compressor, wastegate/jeometri ya kubadilika msingiSehemu hii inaelezea muundo na utendaji wa turbocharger, ikishughulikia aerodynamics ya turbine na compressor, mifumo ya bearing, udhibiti wa wastegate na variable geometry, mipaka ya boost, na dalili za kushindwa zilizounganishwa na lubrication au overspeed.
Turbine housing, wheel design and energy useCompressor maps, surge and choke regionsJournal and ball bearings, seals and coolingWastegate actuators, control lines and tuningVariable geometry vanes, actuators and sootTurbo failure modes, inspection and protectionSomo 8Mfumo wa utoaji wa mafuta: tangi la mafuta, pampu ya kuinua, filta za msingi na za pili, na viga wa majiSehemu hii inaelezea njia ya utoaji wa mafuta ya shinikizo la chini, kutoka tangi la mafuta na pickup hadi pampu ya kuinua, filta za msingi na za pili, na viga wa maji, ikisisitiza udhibiti wa uchafuzi, ingizo la hewa, utambuzi wa vizuizi, na taratibu za huduma za kawaida.
Fuel tank design, pickups and return routingLift pump types, priming and failure signsPrimary and secondary filter functionsWater separator design and draining practiceAir leaks, suction restriction and cavitationService intervals and contamination controlSomo 9Mfumo wa lubrication: aina za mafuta, pampu ya mafuta, galleries, bearings na kazi ya filta ya mafutaSehemu hii inatoa maelezo ya muundo wa mfumo wa lubrication ya dizeli, viwango vya mafuta na viongezi, aina za pampu, galleries, bearings, na filtration, ikielezea jinsi shinikizo la mafuta linavyozalishwa, kufuatiliwa, na kudumishwa ili kuzuia uchakavu na joto la juu.
Engine oil grades, base stocks and additivesOil pump types, drives and pressure regulationMain galleries, branch feeds and priority circuitsBearing lubrication, clearances and coolingOil filter types, bypass valves and serviceLow oil pressure diagnosis and common causes
