IHI VTR-F55-M4

The IHI VTR-F55-M4 is a marine turbocharger featuring a radial compressor and axial turbine, delivering a pressure ratio of about 4.5 and an airflow of ~34.8 kg/s for large‑bore (550–900 mm) two‑stroke diesel engines. The supplied category identifies it as Turbocharger, and it is normally installed on the intake and exhaust side of a marine diesel engine, using exhaust-gas energy to compress combustion air. In that role, its primary purpose is to increase engine air delivery and support efficient combustion over the operating load range. Radial and axial turbocharger families differ in gas-path and bearing design, but all rely on clean compressor and turbine surfaces, sound bearings and unrestricted lubrication. Within the supplied list, neighbouring variants are distinguished by their model designations and naming, while the source does not state further model-specific hardware differences. No additional performance, approval or construction detail is inferred from the model code beyond the information supplied in the source record. For exact ratings, dimensions, settings, capacities, materials and variant-specific limits, refer to the manufacturer documentation for the exact figure.