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1、BMW ServiceDiesel EnginesM57/M67 Common RailCourse contents/Background materialInformation status:09/98DI Diesel Engines M57/M67 - Common RailSec. 1-10Course contents/Background material BMW AG, Service TrainingContentsPageSec. 1Introduction1 Concepts3 Engine views4 Technical features6 DDE control u
2、nit7 Technical data7 Exhaust emission legislation9 Notes on exhaust emission standards/ test cycles10Sec. 2Engine components1 System structure1 Component description2Engine block2Cylinder head gasket5Cylinder head6Cylinder head cover8Valve gear10Crankshaft12Flywheel14Connecting rods with bearings15P
3、istons with rings and pins17Chain drive18Oil pan20Timing case cover (M57)22Rear end cover (M67)22Sec. 3Ancillary components and belt drive1 Brief description1 Requirements and Objectives1 System structure2 Component description4 Torsional vibration damper4Starter motor5Alternator6A/C compressor6Belt
4、s6Tensioning pulley or idler pulley7DI Diesel Engines M57/M67 - Common RailSec. 1-10Course contents/Background material BMW AG, Service TrainingSec. 4Engine mounts1 Brief description1 Requirements and Objectives1 System structure2 Component description3Hydraulic mount3 Functional description5DDE par
5、ameters5Vacuum supply6Sec. 5Lubrication system1 Brief description1 Requirements and Objectives1 System structure2 Component description4Oil pump4Oil filter with integrated oil-to-waterheat exchanger6Oil spray nozzles7Sec. 6Cooling system1 Brief description1 Requirements and Objectives1 System struct
6、ure2 Component description4Water pump4Thermostat4Radiator5Exhaust hood/shutter7Fan7Auxiliary heater7DI Diesel Engines M57/M67 - Common RailSec. 1-10Course contents/Background material BMW AG, Service TrainingSec. 7Fuel system1 Brief description of function1 Requirements and objectives2 System struct
7、ure3 Component description6Fuel tank6Advance delivery pump6Auxiliary delivery pump7Fuel filter9Inlet pressure sensor10Pressure relief valve (LP system)11High pressure pump12Pressure control valve18High pressure fuel accumulator (Rail)20Rail pressure sensor23Injector26Fuel heating/cooling (air heat e
8、xchanger)32Distributor unit with throttle34 Overview of injection systems35Distributor injection (radial piston principle)36Pump nozzle37Common rail38Conventional injection characteristics39Common rail injection characteristics40 Summary of common rail system43Sec. 8Air intake and exhaust systems1 B
9、rief description1 Requirements and objectives1 System structure2 Component description3Unfiltered air intake3Intake silencer4Exhaust turbocharger6Intercooler8Intake manifold (intake plenum)9Exhaust manifold10Exhaust gas recirculation (EGR)11Exhaust system13DI Diesel Engines M57/M67 - Common RailSec.
10、 1-10Course contents/Background material BMW AG, Service TrainingSec. 9Digital Diesel Electronics1 Review of DDE control units2 System structure3 Signal description4Analog inputs4Digital inputs10Frequency inputs15Power output stages17Switching outputs19Signal output stages, bi-directional interfaces
11、28Supply32 Functional description35Signal preprocessing36Injection-rate control38High pressure control42Exhaust gas recirculation (EGR)45Boost-pressure control47Additional functions49Monitoring of the DDE control unit54 Programming55 Diagnosis56Sec. 10Service information1 Diagnosis1 Recommendations
12、to repair instructions2M57 fuel system - engine start2High pressure system - fuel injectors3Valve timing M574Camshafts M574 Repair instructions5 Service information M57/M676 Special tools M57/M677Appendix1Pin assignments (DDE 4.0/4.1)1 Abbreviations5DI Diesel Engines M57/M67 - Common Rail Sec. 1 P.1
13、Course contents/Background material BMW AG, Service TrainingIntroductionBMW is successively developing a new family of diesel engines with direct injection (DI) that will include 4-cylinder, 6-cylinder and 8-cylinder engines.Following the successful introduction of the M47D20 4-cylinder engine, a ne
14、w 6-cylinder engine will soon be phased into series production.This engine features all the design characteristics of the second generation of direct injection diesel engines and represents the currently most advanced diesel technology available in passen- ger vehicles.Thanks to its outstanding perf
15、ormance and high comfort proper- ties in conjunction with excellent exhaust quality and integral fuel economy, this engine enjoys a leading position in the competitive environment.Fig. 1: Competitive situation M47/M57Initially, the new M57 engine will be installed in the form of a top- of-the-range
16、diesel engine in the 5 and 7 Series. The M67 will enhance the top end of the diesel engine range in the 7 Series.Parallel to this, the well-proven indirect injection engines (IDI) will still remain in the product range.spec. outputDisplacement6-cyl4-cylmax. outputKT-3692DI Diesel Engines M57/M67 - Common Rail Sec. 1 P.2Course contents/Background material BMW AG, Service TrainingObjectivesThe layout and design particularly of the six-cylinder engine is based on the following primary objec
