General Description

Engine





External View

GENERAL
The V8 petrol engine is a 4.4 liter, 8 cylinder, 90 degrees 'Enclosed' V unit, with 4 valves per cylinder, operated by two overhead camshafts. 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, positive crankcase ventilation and exhaust gas re-circulation 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 cylinder block is of aluminum alloy construction with cast iron liners and a cast aluminum bedplate bolted to the bottom of the block to improve lower structure rigidity. The cylinder heads are cast aluminum with thermo-plastic camshaft covers. The single-piece oil sump is also cast aluminum The fabricated stainless steel twin skin exhaust manifolds are unique for each cylinder bank and a molded 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 aluminum 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 aluminum cylinder heads, each incorporating two hollow camshafts manufactured in chilled cast iron
^ Four valves per cylinder
^ aluminum graded valve lifters (shimless)
^ Variable Valve Timing (VVT) (inlet only)
^ Top fed, 8-jet fuel injectors
^ Engine front cover manufactured from aluminum which accommodates the crankshaft front oil seal
^ Primary and secondary chains drive the camshafts
^ An aluminum bed plate
^ A cast iron crankshaft
^ Fracture-split connecting rods in sintered-forged steel
^ A twin multi-vee belt, which drives the front end accessories
^ Fabricated stainless steel twin skin exhaust manifolds
^ Electronic Exhaust Gas Recirculation (EGR) valve
^ An advanced engine management system incorporating electronic throttle control
^ Meets with the fault handling requirements, as detailed in the European On-Board Diagnostic (EOBD) 111, US Federal OBD and California OBD II legislation








ENGINE DATA