The Wärtsilä RT-flex50 engine is highly suited to a wide range of ship types and sizes from Handymax and Panamax bulk carriers to product tankers and feeder container vessels. They offer maximum power outputs from 6100 to 13,960 kW at 99 to 124 rpm.
The Wärtsilä RT-flex50 is a low-speed marine diesel engine of the crosshead type with uniflow scavenging. It is designed from the outset with electronically-controlled common-rail systems for fuel injection and valve actuation.
Wärtsilä RT-flex common-rail system
In the RT-flex common-rail system, fuel oil, servo oil and control oil are delivered at regulated pressures to rail pipes arranged in a rail unit along the side of the cylinders. Electronic control units then regulate delivery from these rail pipes to fuel injection and exhaust valve operation.
Thus Wärtsilä RT-flex engines have complete flexibility in the fuel injection timing, rate, pressure and volume, as well as in exhaust valve operation to give benefits in engine operation which cannot be obtained through mechanically-controlled systems.
The key benefits of the RT-flex50 are:
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Optimum power outputs and shaft speeds
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Competitive first cost
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High reliability
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Three years’ operation between overhauls
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Low maintenance costs through reliability and durability
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Economical fuel consumption over the whole operating range
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Low exhaust gas emissions
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Full compliance with NOX emission regulations
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Low system oil losses
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Capable of extremely low, stable running speeds
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Application Examples:
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