大众奥迪W12 6.0L发动机技术培训课件.ppt

Technical Training TtTI/GSStatus: 04/01Page 1/Total?TIContentX12112235810671149Technical Training TtTI/GSStatus: 04/01Page 2/Total?TIContentX12Seminar contentEngine designTechnical data W configuration Crank drive and cylinder heads Engine lubrication Engine cooling system Engine control Alternator Intake and exhaust systems Secondary air system and EGR Exhaust systemPractical operationsEngine assemblyService conceptOil level checkGenerating readiness codeFinal control diagnosisTechnical Training TtTI/GSStatus: 04/01Page 3/Total?TIContentX12Technical data Engine code:AZCConfiguration: W-engine with a V-angle of 15° and a bank angle of 72°Cubic capacity: 5998 cm3Max. output:309 kW (420 PS) at 6000 rpmSpec. output:51.5 kW/l 70.0 PS/lMax. torque:550 Nm at 3500-4750 rpmSpec. torque:91.7 Nm/lBore:84.0 mmStroke:90.268 mmCompression:10.75 : 1Fuel: unleaded Euro Super 95 RONunleaded Super Plus 98 RON**Ignition sequence: 1-12-5-8-3-10-6-7-2-11-4-9Ignition interval:60° crankshaftEngine management:Motronic ME 7.1.1Emission standard:EU 4Service interval:LongLife max. 30,000 km or max. 2 yearsOutput [kW]Engine speed [rpm]Torque [Nm]Technical Training TtTI/GSStatus: 04/01Page 4/Total?TIContentX12Audi A8 L 6.0 quattroPermissible total weight (kg)2530Permissible front axle load (kg)1380Curb weight (kg) approx. 2050Permissible rear axle load (kg)1190Wheel base (mm)3010Luggage compartment (litres)525Power transmissionquattro, five-stage automaticAcceleration (s)0-80 km/h4.30-100 km/h5.8Maximum speed (km/h)250Fuel tank (litres.)approx. 92Windscreen washer reservoir (litres.)approx. 4with headlight washer systemapprox. 7.0Engine oilChange quantity with filter change10.5 Technical Training TtTI/GSStatus: 04/01Page 5/Total?TIContentX12Features of the W12-6.0 l. are:- 12 cylinder petrol engine in W configuration- engine block and cylinder heads made fromaluminium- oil supply by means of dry-sump lubrication- double overhead camshafts with 4 valves per cylinder, actuated by means of roller rocker fingers- infinitely variable camshaft timing control forinlet and exhaust camshafts- 6 catalytic converters - 8 lambda probes for monitoring catalyticconverters and control of mixture formationEngine mechanical componentsTechnical Training TtTI/GSStatus: 04/01Page 6/Total?TIContentX12Cylinder block / crankcaseTwo Vs equal: With a length of 513mm and a width of 710mm, the dimensions of the W12 engine are as compact as those of a V8 engine.This forms the basis for a superior drive concept with respect to performance, smooth running and 4-wheel drive.In-line engineV-engine VR-engine (V-engine with narrow V-angle)VR-engineVR-engineW-engineTechnical Training TtTI/GSStatus: 04/01Page 7/Total?TIContentX12A- Split intake manifold (right intake pipes forleft cylinder bank and vice versa)B- Cylinder head coverC- Aluminium cylinder head with camshafts, CS adjusters and valvesD- Aluminium cylinder block without additional cylinder linersE- Bearing cross piece with cast-in bearing blocks made from cast ironF- Upper section of sumpG- Upper section of sump with oil pump anddistribution ducts, oil filter and oil cooler outletCylinder block / crankcaseCylinder bank 1Cylinder bank 2Technical Training TtTI/GSStatus: 04/01Page 8/Total?TIContentX12Bearing cross pieceIn order to fulfil the stringent acoustic requirements, it is necessary to achieve constant bearing clearance throughout the entire operating temperature range. Thus, the main bearing blocks of nodular cast iron are cast into the rigidly constructed aluminium bearing cross piece, to form a positive fit.Each of the main bearings (17 mm in width) is secured by 4 stretch bolts with M8 thread.Bearing cross piece (aluminium)Main bearing web (cast iron)Connecting webTechnical Training TtTI/GSStatus: 04/01Page 9/Total?TIContentX12The “fanned“ arrangement of the cylinder bores in conjunction with the V-angle of 15° and the cylinder bank angle of 72°, results in an extremely compact and torsionally rigid cylinder block.The cylinder axes are offset with respect to the axis of rotation of the crankshaft in order to prevent overlap near the BDC position.The offset arrangement of the cylinders makes constructional demands on the- crank drive- pistons- valve gearThe offset dimensions are:- uneven cylinders 1-3-5-7-9-11 - 12.5mm - even cylinders 2-4-6-8-10-12 + 12.5mm Engine mechanical componentsTechnical Training TtTI/GSStatus: 04/01Page 10/Total?TIContentX12The compact, short crankshaft design features seven main bearings.Two conrods are mounted between each adjacent pair of main bearing shells.The V-angle of 15° and the cylinder bank angle of 72° result in an extremely compact design.The width of the conrods (13 mm) and the associated bearings (12 mm) is extremely low.Crank driveTechnical Training TtTI/GSStatus: 04/01Page 11/Total?TIContentX12Pistons two for each cylinder head. These are connected to two catal。