Mohawk Innovative Technology, Inc. products

MiTi has developed a series of the world’s first completely oil-free turbomachinery using compliant foil bearings, ranging from turbochargers to turbine engines and pipeline class hydrogen compressors.  The low power-loss and lubricant-free foil bearings overcome contamination, drag, speed and temperature limitations associated with other machine bearing designs to increase responsiveness, efficiency and durability.  Premature bearing failures due to high speed and high operating temperatures are eliminated.  Oil supply and scavenge lines are also eliminated, resulting in simplified installations, reduced oil leak potential and lower part count.

MiTi has designed and tested an Air-Cycle Machine (ACM) for advanced fighter aircraft, as well as other potential applications. The MiTi ACM operates at speed of 120,000 rpm, 20% higher than completing technology, allowing for a reduction in weight and size envelope. The machine features MiTi®’s low power loss compliant foil bearings that do not require an additional cooling feed at the thrust bearing outer diameter, as in the case of other OEM designs currently in the field. This reduced cooling flow creates greater machine efficiency and lower likelihood of bearing contaminants from dust and debris.

MiTi has two main families of ORC Turboalternators. Our high speed axial turbine engines, are characterized by relatively flat adiabatic efficiency curves under a broad range of specific speeds, making them ideal for use in highly variable environmental conditions, as in geothermal sites, or where condensation temperatures fluctuate widely with the seasons. Our radial inflow devices exhibit a high single stage power density, and accommodate larger flow rates at lower spin speeds, which may be preferable for industrial applications with steadier operating conditions.