General Description
EngineExternal View
GENERAL
The V8 supercharged petrol engine is a 4.2 liter, 8 cylinder, 90 degrees 'Enclosed' V unit, with 4 valves per cylinder, operated by two overhead camshafts per cylinder head. The engine emissions comply with ECD3 (European Commission Directive) and US Federal Tier2 Bin 8 legislative requirements and employs catalytic converters, electronic engine management control and positive crankcase ventilation to limit the emission of pollutants. The cooling system is a low volume, high velocity system. The Engine Control Module (ECM) controls the fuel injection system, the ignition system and the electric throttle.
The cylinder block is of aluminum alloy construction with cast iron liners. A cast aluminium bedplate is bolted to the bottom of the block to improve lower structure rigidity. The cylinder heads are cast aluminium with thermo-plastic camshaft covers. The single-piece oil sump is also cast aluminium. The fabricated stainless steel twin skin exhaust manifolds are unique for each cylinder bank. A moulded plastic acoustic cover is fitted over the upper engine to reduce engine-generated noise.
Engine Structure
TECHNICAL FEATURES
The technical features include:
^ An eight-cylinder 90-degree 'Enclosed V configuration liquid cooled aluminium cylinder block with cast iron liners
^ Pistons are of open-ended skirt design, with two compression rings and a three-piece oil control ring
^ Two aluminium cylinder heads, each incorporating two camshafts manufactured in chilled cast iron
^ Four valves per cylinder
^ Graded valve lifters (shimless)
^ Belt driven supercharger
^ Top fed, 12-hole fuel injectors
^ Engine front cover manufactured from aluminium, accommodating the crankshaft front oil seal
^ Primary and secondary chain drive for the camshafts
^ An aluminium bedplate
^ A cast iron crankshaft
^ Fracture-split connecting rods in sintered-forged steel
^ A twin multi-vee belt, driving the front-end accessories
^ Fabricated stainless steel twin skin exhaust manifolds
^ An advanced engine management system incorporating electronic throttle control
^ Meets with the fault handling requirements, as detailed in the European On-Board Diagnostic (EOBD) III, US Federal OBD and California OBDII legislation.
ENGINE DATA
