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| Illustration 1 | g06020430 |
Air, drawn in and compressed by the turbo compressors, flows through the fresh water charge air coolers.
The latter, by reducing temperature, allows an increase in the engines volumetric efficiency.
The air density at the inlet of the intake manifold is measured by two sensors, for pressure and temperature, allowing the ECU of the EDC system to calculate the related injected fuel quantity and timing to optimize combustion.
Lubricating oil vapors (CCV) not condensed in the separator, are sent to the engine intake by a gauged hole downstream of the air filters refer to CCV Filter.
Exhaust gas expelled by the engine flows through the cooled exhaust manifold to reach the turbo compressors wheels.
Exhaust manifold and turbo bearing housing are fresh water cooled.
Exhaust gases flow into the exhaust riser, if equipped, and mixed with the sea water before to be expelled overboard.
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| Illustration 2 | g06020437 |
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(1) LP Turbine
(2) HP Turbine (3) Supercharger Only on the 1000Hp engine | |
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| Illustration 3 | g06021578 |
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(4) Oil inlet
(5) Water inlet (6) Compressor inlet (7) Compressor outlet (8) Oil outlet (9) Water outlet (10) Turbine outlet (11) Turbine inlet | |
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| Illustration 4 | g06021581 |
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(12) Water inlet
(13) Turbine outlet (14) Oil inlet (15) Turbine inlet (16) Compressor inlet (17) Compressor outlet (18) Water outlet (19) Oil Outlet | |
Supercharger Only on 1000HP
An extra radial compressor, in series with the engine turbocharging system provide more boost, at low engine RPM only, increasing engine torque, and load response
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| Illustration 5 | g06021585 |
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(20) Oil inlet
(21) Oil Outlet (22) Supercharger outlet (23) Supercharger inlet | |