Honeywell goes with the flow for downsizing

摘要

Tier One Honeywell is working on ultra-low inertia turbos for downsized gasoline engines. Featuring axial flow turbines and dual-sided compressors, they offer better response than existing twin-scrolls. Alternative turbine materials such as titanium aluminide can reduce inertia too but these alloys are very expensive and the production process has a high scrap rate. A more fundamental approach could be more cost-effective. Honeywell's project leader, Vit Houst, said: "It's a specially designed axial turbine. The advantage is mainly a reduction of the moment of inertia when we compare it for a given flow with a radial turbine. It's natural that we paired it with a double-sided parallel compressor. This is all combined through a specially designed bearing for this concept."