Talk:Lancia Delta S4

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[edit] Modification to 'Other Information'

It would be more accurate to describe the combination of a turbocharger and supercharger used in this car as 'twin charging', rather than 'compound charging'. Compound charging refers to the use of two compressors in series, with the output of the first being further compressed by the second. It is used to obtain 'boost' pressures higher than typically or practically obtainable with a single compressor.

Twin charging typically uses the supercharger to perform the compression role from idle to the engine speed where the turbo is able to operate, or until the turbo is able produce the desired output. Zoolio (talk) 00:42, 2 April 2008 (UTC)