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Development of a Common Dual Axle VNT™ for Single and Two-Stage Off-Highway Applications

Author: J. Wilson, M. Avila, P. Davies, N. Theiss, B. Zollinger

Honeywell launched the latest generation DutyDrive VNT for off-highway on John Deere’s 9.0L Tier4 engine. Developments made to the VNT stage resulted in improved efficiency and allowed over 20 unique power ratings, including both two-stage and single stage air systems, with the same turbo design. The turbo also features an integrated electro-hydraulic actuation system developed to operate in high-temperature, high-vibration environments in a compact package size.

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