Marine Turbo Service
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T- MET42SD Marine turbocharger nozzle ring (also called turbo guide vane) belongs to on part of T- Mitsubishi / T- MET-SD series turbocharger, which was developed in 1990 to meet the increasing ded for higher engine outputs. T- MET-SD series exhaust gas turbocarger is widely used in marine and stationary engines.
The T- MET-SD series turbocharger is axial type of turbine with higher engine output;
The T- MET-SD series turbocharger has a single body impeller with split blade;
Its turbine side uses the freestanding turbine blades with wide cord;
The T- MET Series turbochargers is kind of advanced aerodynamic design;
Long service lifetime and high reliability;
Low noise silencer is applied to the T- MET Series turbochargers;
Applied to all major engines in marine and stationary field.
T- MET Series turbochargers undergone revolusionary changes in order to improve turbocharger perforce by mainly modifying the compressor wheel and turbine blade.
Improvement of T- MET Compressor Impeller:
| T-MET | Original and ..0 Series | T-S, -SA Series | T-SB,SBII Series | T-SC Series | T-SD Series | T-SE Series | T-SEII Series |
| T-MET35 | T-MET35S/SA | T-MET33SB/SBII | T-MET33SC | T- MET33SD | T-MET33SE | T-MET33SEII | |
| T-MET350 | T-MET45S/SA | T-MET42SB/SBII | T-MET42SC | T- MET42SD | T-MET42SE | T-MET42SEII | |
| T-MET45 | T-MET56S/SA | T-MET53SB | T-MET53SC | T- MET53SD | T-MET53SE | T-MET53SEII | |
| T-MET450 | T-MET66SB | T-MET66SC | T- MET66SD | T-MET66SE | T-MET66SEII | ||
| T-MET56 | T-MET83SC | T-MET71SE | T-MET71SEII | ||||
| T-MET560 | T-MET83SE | T-MET83SEII | |||||
| T-MET90SE | |||||||
| T-MA Series | T-MB Series | T-MBII Series | T-SR Series | T-SRII Series | T-SRC Series | T-ER Series | |
| T-MET33MA | T-MET33MB | T-MET33MBII | T-MET22SR | T-MET22SRII | T-MET18SRC | T-MET13ER | |
| T-MET42MA | T-MET37MB | T-MET37MBII | T-MET26SR | T-MET26SRII | T-MET22SRC | T-MET16ER | |
| T-MET53MA | T-MET42MB | T-MET42MBII | T-MET30SR | T-MET30SRII | T-MET26SRC | T-MET20ER | |
| T-MET60MA | T-MET48MB | T-MET48MBII | T-MET30SRC | T-MET24ER | |||
| T-MET66MA | T-MET53MB | T-MET53MBII | T-MET37SRC | T-MET28ER | |||
| T-MET71MA | T-MET60MB | T-MET60MBII | T-MET34ER | ||||
| T-MET83MA | T-MET66MB | T-MET66MBII | |||||
| T-MET90MA | T-MET71MB | T-MET71MBII | |||||
| T-MET83MB | T-MET83MBII | ||||||
| T-MET90MB | T-MET90MBII |
The turbine is driven by the engine exhaust gas, which enters via the gas inlet casing. The gas expands through a nozzle ring where the pressure energy of the gas is converted to kinetic energy. This high velocity gas is directed onto the turbine blades where it drives the turbine wheel, and thus the compressor at high speeds (10 -15000 rpm). The exhaust gas then passes through the outlet casing to the exhaust uptakes.
The nozzle ring need to bear the extremely high temperature and high pressure, so it's very crucial for its material selection.
The turbocharger nozzle ring is usually fabricated from a creep resistant chromium nickel alloy, heat resisting moly-chrome nickel steel or a nimonic alloy.