Completely Non-Water Cooled Gas Casing Easy Maintenance Inboard Bearing Arrangement Plain Bearing

Advantages

The latest two models, with a difference in turbine blade design, allow selective application to a full range of diesel engines for maximum exploitation of engine exhaust-gas energy, all for the most efficient engine supercharging.
High Efficiency The compressor impeller features a 3-D blading profile that maximizes aerodynamic performance, while the turbine has blading that eliminates the need for a damping wire detrimental to turbine efficiency. Together, these inovations combine to raise total turbocharger efficiency.
Easy of Opening for Inspection or Cleaning The turbine exhaust-gas inlet casing consists of a detachable innner casing fitted with the turbine nozzle assembly and a fixed outer casing containing the rotor shaft fitted with the turbine wheel. The inner casing can be readily unbolted and pulled from the other casing, complete with the nozzle assembly, thus exposing the turbine wheel and rotor can be removed from the outer casing.
Integral L.O. Head Tank and Simple L.O. Piping The L.O. head tank, previously installed separately, has been integrated into the turbocharger casing and connected to L.O. piping of simplifiled arrangement. These advantages, combined with an absence of tubocharger cooling water piping and sealing air piping, make for ease of turbocharger mounting on the diesel engine.
Long Service Life The turbocharger gas intlet and outlet casing, being designed on the traditional principle of non-water-cooling, remain totally free of sulfuric-acid corrosion. The plain bearings so far employed in combination with the internal bearing system for all the MET-series of turbochargers have proven nearly semipermanent in service life when provided with good-quality lubrication.

Design Features

Compressor Impeller The compressor impeller, which is the component of foremost importance to engine supercharging, is designed with blades of 3-D profile capable of highest level of aerodynamic performance for MET-SD and SE model applications.
Turbine Blading Turbine blading of improved design, which eliminates the need for a damping wire detrimental to turbine efficiency, is employed for MET-SD and -SE models. The blade for MET-SE model application is designed slightly wider in chord line than that for MET-SD model application so that the two models will combine to allow selective applications to a full range of large diesel engine for maximum exploitation of engine exhaust gas energy, achieving the most efficient engine supercharging.
Rotor and Internal Bearing System The rotor employed is of proven design, as is the internal bearing system. The internal bearing system goes a long way toward maximizing the rotor shaft stability. With the rotor itself being designed so as to minimize the imbalances, its stability is not affected even in the event of heavy fouling.

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