Honeywell Turbo Technologies

High Temperature, Ball Bearing (HTBB) VNT™ Turbo

As environmental pollution regulations continue to tighten, engine designers of all sizes increasingly turn to turbochargers to maximize the output of a given engine displacement. Turbocharger manufacturers have stepped up to this challenge with new, innovative solutions to problems that have historically plagued turbo designs to increased the responsiveness, improve operating thermal environment and reduce the pollution effects of their devices. Honeywell's innovative breakthrough comes in the form of an industry first High Temperature "Hybrid" Ball Bearing (HTBB) that pairs ceramic balls with high quality steel raceways to provide rolling friction (as opposed to sliding friction found in all other passenger vehicle turbos today) that can operate at turbine inlet temperatures that are much hotter than any other turbo diesel passenger vehicle applications currently in the market today. Higher operating temps mean higher mid-range torque and better engine power output. The new innovative ball bearing means lower friction, particularly at low engine speeds which in turns significantly reduces cold start emissions as well as contributing to better performance and improved fuel economy.

This important innovation was first introduced on Daimler's V6 3.0 liter engine (OMS642 LS), which was launched on the Mercedes Benz E350 and R350 models. Subsequently the engine/turbo was introduced in its S-Class sedan and will eventually roll out across its full product line.