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Technical Papers
September 2011

TwoStage for New Audi V6-TDI Bi-turbo

Author: J. Lottermanna, Dr N.Schornb, D. Jeckela, F. Brinkmannb, K-H Bauera (a: Honeywell Turbo Technologies b: Ford Research Center)

The first TwoStage serial boosting architecture for V6 diesel engines was recently developed by Honeywell. Its unique architecture combines a high pressure VNT™ turbo that maximizes low-end response with a low pressure turbo for enhanced transition and high-end output. This downsized engine, with its 30 percent displacement reduction, delivers up to 35 percent increased engine power and up to 10 percent improved fuel economy.

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