List of Discontinued Volkswagen Group Diesel Engines - Eight-cylinder Diesels - 4.0 V8 32v TDI CR 202kW

4.0 V8 32v TDI CR 202kW

When introduced in May 2003, this 4.0 litre V8 was the highest power and highest torque diesel V8 fitted in any production car worldwide. This was the second 'new' V engine from Audi which utilises new technologies - including chain-driven overhead camshafts and ancillary units, following the 4.2 40-valve V8 petrol engine first seen in the B6 S4. This engine was discontinued in July 2005, superseded by the bored-out and updated but fundamentally identical 4.2 V8 TDI.

identification

parts code prefix: 057.B, ID code: ASE

engine configuration & engine displacement

90° V8 engine, Turbocharged Direct Injection (TDI) turbodiesel; 3,937 cubic centimetres (240.3 cu in), bore x stroke: 81.0 by 95.5 millimetres (3.19 in × 3.76 in), stroke ratio: 0.85:1 - undersquare/long-stroke, 492.1 cc per cylinder, 88 millimetres (3.46 in) cylinder spacing, compression ratio: 17.5:1, water-cooled alternator

cylinder block & crankcase

compacted vermicular graphite cast iron (GJV/CGI); cast reinforcing bed-plate lower frame incorporating five main bearings with each bearing affixed by four bolts, three-part oil sump consisting of cast alloy upper section, a middle baffle section and pressed steel lower section, die–forged steel crossplane crankshaft with shared crankpins, diagonally fracture-split connecting rods, chain-driven ancillaries, oil filter module (incorporating oil separator and water-to-oil cooler) mounted within the 'vee'

cylinder heads & valvetrain

cast aluminium alloy; four valves per cylinder, 32 valves total, operated by low-friction roller finger cam followers with automatic hydraulic valve clearance compensation, 2x double overhead camshafts (2xDOHC - two overhead camshafts per cylinder bank - 'quad cam') - the inlets driven in a relay method at the rear (flywheel) end of the engine by four simplex roller chains and the exhausts driven from the inlets by automatic slack adjusting spur gears at the front end, two unequal-length swirl-inducing switchable inlet ports, siamesed unequal-length exhaust ports

aspiration

two air filters, two hot-film air mass meters, 'biturbo': two water-cooled Garrett GT1749 turbochargers with electrically actuated Variable Turbine Geometry (VTG) (one turbo per cylinder bank) operating up to 210,000 rpm with a maximum boost of 2.2 bars (32 psi), two air-to-air fan-assisted side-mounted intercoolers (SMICs), two separate cast alloy intake manifolds interconnected by a "feedthrough" system to equalise the turbo boost pressure in the two cylinder banks, two-position variable swirl flaps integrated into the intake tract

fuel system & engine management

electric low-pressure fuel lift pump, one toothed belt driven 1,600 bars (23,210 psi) injection pump, one central fuel distributor supplying two common rail (CR) fuel rails (one per cylinder bank), Bosch solenoid-valve injectors with seven-hole nozzles for homogenous fuel delivery, single and double pilot injection; Bosch EDC16 electronic engine control unit (ECU)

exhaust system

twin water-cooled exhaust gas recirculation (mounted within the 'vee'), air-gap insulated fan-branch alloy steel exhaust manifolds, two close-coupled primary catalytic converters plus two main underfloor converters, Euro3 emissions standard

dimensions

length: 516 millimetres (20.3 in), mass: 270 kilograms (595 lb)

DIN-rated motive power & torque output

202 kilowatts (275 PS; 271 bhp); 650 newton metres (479 lbf·ft) @ 1,800-2,500 rpm

application

Audi D3 A8 4.0 TDI quattro (05/03-07/05)

reference