Jaguar XJ

The combination of a modern turbodiesel engine and the highly advanced aluminium body of the XJ range delivers an exceptional package of performance, dynamics, refinement and economy. All the advantages of modern diesel engines - fuel efficiency, relaxed motoring and impressive power delivery - are only amplified by linking them to a super-strong and lightweight chassis, like that of the XJ.

Launched in Jaguar’s mid-range S-TYPE saloon in 2004, Jaguar’s state-of-the-art twin-turbo V6 Diesel sets new standards in refinement and performance. The highly efficient 24-valve engine features advanced technologies, including the latest generation high-pressure, common rail, direct-injection fuel system and a lightweight, compacted graphite iron (CGI) cylinder block.

The outstanding strength and durability of CGI means that less material is needed than for a conventional cast iron block, ensuring reduced engine weight and length. In fact, the new diesel engine is the lightest unit of its type, at just 202kg. This significantly contributes to the excellent power-to-weight ratio and fuel economy.

Other features at the heart of the engine provide the capability to deliver high performance and excellent durability. Cast aluminium pistons incorporate ‘double wave-gallery’ cooling. In this process, oil is sprayed precisely onto the inside of the pistons from jets in the block. The oil then flows through two internal wave-shaped channels to help cool each piston crown. This arrangement also has the indirect benefit of reducing piston ‘slap’ noise.

continues... | Part Two

Published : 15/06/05 Author : Melanie Carter

Jaguar XJ News

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