The small turbocharger is developed to reduce the number of turbine blades from 11 to nine previous products

The most significant feature of Mitsubishi Heavy Industries, the small turbocharger is developed to reduce the number of turbine blades from 11 to nine previous products. The blade is reduced, and in case of the same structure, material,6 cylinder 2.0 turbo lighter weight means, so that their inertia becomes small when starting the supercharger, the turbine intervene more rapidly accelerate the reaction speed of the engine, to enhance the speed of the driver instantaneous driving experience.
Mitsubishi Heavy Industries, in addition to optimizing the pressure on the new number of the turbine blades, but also on the diameter of the turbine blades were reduced. The improved turbine blade diameter 25mm from the previous reduced to 22mm, thereby reducing the moment of inertia of the turbine in operation, and to improve the response speed of the turbine.
In order to ensure the booster effect, MHI engineers airflow through numerical analysis, improved the flow path, and a guarantee to reduce the diameter of the blade will not fall after the booster effect becomes small. As for why not use variable turbine blade technology (Variable Geometry Turbocharger), but simply reduced blade diameter, I believe this is also the cost issue. After all, small cars for more stringent cost control.
The release of the trumpet MHI turbo also uses a ball bearing. Compared to many small cars floating bearing used (commonly known as wave Division bearing) turbocharger, ball bearings installed in the turbine shaft ball to replace the floating oil bearing position. This design has a friction bearing is smaller, the effect of lower turbo lag, the power limits of the advantages of the press is more advantageous. And can effectively control the dynamics of the turbine shaft, engine oil pressure, 4 cylinder 3.5 turbo and the quality can be appropriately reduced. (Some pictures from the Nikkei Technology Online)

I believe that before long be able to see this new compact powered turbocharger car sale, 6 cylinder 3.5 turbo faster response times may become another new selling point for businesses.