Introduction
The document introduces the new MET-MA series of Mitsubishi exhaust gas turbochargers, which are built on a proven design platform with a history dating back to the 1960s. The MET-MA series continues the tradition of non-water cooled, inboard bearing arrangements.

Design and Features
The MET-MA turbochargers maintain the same gas outlet casing design as previous models (MET-SC, -SD, -SE, -SEII) but incorporate advanced computational flow analysis for improved turbine performance across all load ranges. A unique two-piece detachable gas inlet casing allows for easy maintenance and quick access to the turbine side. The gas inlet casing is lightweight, and the nozzle ring can be cleaned without removal.

Turbine Blades
The MET-MA features newly developed turbine blades that enhance efficiency without significant design changes. These blades are a minor modification of the high-potential MET-SE, SEII blades.

Frame Sizes and Selection
The MET-MA series introduces the MET60MA frame size, expanding the selection to eight frame sizes, allowing for optimal turbocharger sizing for engines, particularly those around 10,000kW. The MET-MA series offers similar capacity to the MET-SEII series.

Efficiency and Interchangeability
The MET-MA turbochargers demonstrate outstanding efficiency, confirmed through testing. The compressor design remains unchanged, achieving a 2% higher overall efficiency. The gas outlet flange is larger but easier to connect, maintaining interchangeability with previous models except for the gas outlet flange.

Conclusion
The MET-MA series represents a continuation of Mitsubishi's commitment to high-performance turbochargers, offering improved efficiency and ease of maintenance while maintaining compatibility with existing systems.