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Technical Papers
September 2010

Down-speeding and Upgrading a Product Line for US’07 Tier 2 Bin 5, EU5/6

Author: P.Davies, D.Marsal, E.Genin, F.Daguin, D.Jeckel (Honeywell Turbo Technologies)

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.

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