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Technical Papers
September 2009

Sequential Boosting Valve and Turbocharger System sets New Standard for Diesel V-Engines

Author: P.Renaud , M.Norton (Honeywell Turbo Technologies)

The remarkable performance improvement of the V6 3.0L JLR engine is enabled by Honeywell TwoStage parallel boosting architecture. The system consists of two turbos working sequentially: the primary VNT™ turbo solely provides boost at low engine speeds while the second turbo (in conjunction with the primary turbo) delivers peak power at high engine speeds. In addition, a unique valve technology controls the transition between mono and twin-turbo modes. Multi-stage turbocharging appears as a key enabling technology delivering outstanding performance in terms of low-end torque, high-end power and transient response.

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