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Development of a Common Dual Axle VNT™ for Single and Two-Stage Off-Highway Applications
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.
Down-speeding and Upgrading a Product Line for US’07 Tier 2 Bin 5, EU5/6
From 2006 to 2010, the GT20-25 VNT™ product range has undergone a series of advanced changes in order to meet the US’07 Tier 2 Bin 5, EU5 and EU6 requirements. Cutting-edge aerodynamics, upgraded variable geometry mechanism (3rd generation) and new bearing systems are among the critical developments that helped achieve significant improvements in cold start, driveability, reliability, fuel consumption and emission control.