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Improvement of a turbocharger by-pass valve and impact on performance, controllability, noise and durability.
While engine boundary conditions have become harsher, fine, accurate and sustainable control of boost is challenging the way mechatronics components are engineered. This paper describes key elements of the kinematic tools developed by Honeywell Turbocharger Technologies in order to optimize turbocharger control solutions. It includes details on CAE applications such as fluid dynamics, flexible multi-body dynamics and thermo-mechanical simulations and how they can be linked together to analyse a complete system.
An Ultra-low Inertia Turbocharger Compatible with Exhaust Pulse Separation
DualBoostTM is an Ultra-Low Inertia concept for Gasoline Boosting
– The first Mono-scroll version was presented in 2011/2012
– Mono-scroll range DB14-DB22 was exhibited in Vienna in 2013
– The concept is now reaching aerodynamic and mechanical maturity
• DualBoostTM Twin-Flow
– Flow seperation can be applied to the DualBoost concept
– DualBoost is a valid concept for Mono & Twin-Flow applications
• Meridional Division shows some advantages in performance todate
• Sector Division remains interesting for further development
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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.
