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Position: Engine»Diesel Engine»Marine Engine

RT-flex 50-B

Wartsila RT-flex50 low-speed marine diesel engine is applicable for wide types or dimensions ships: from handysize and Panama bulk carrier to oil tanker and container carrier.

Maximum output power: 6100-13960kw, with speed of 99-124rpm.

The fuel injection and valve drive are controlled under the full electrically controlled common rail system.

Cylinder Bore Stroke Rotating Speed R1 Mean Effective Pressure Piston Speed Fuel Oil
500mm 2050rmm 99-124rpm 20.0bar 8.5m/s 700cSt/50°
Rated Power, Dimensions and Weights
Number of Cylinders Output in kW at Length Weight
124rpm 99rpm
R1 R2 R3 R4
5 8300 5800 6650 5800 5582   200
6 9960 6960 7980 6960 6462   225
7 11620 8120   9310 8120 7342   255
8 13280 9280 10640 9280 8222   280
Dimension B C D E F   G
3150 1088 7646 3300 9270   1636
Automatic Fuel Consumption
Full Load
Stage Point R1 R2 R3 R4
Brake mean effective pressure   20 13.9 20 17.5
IMO Tier I RT-flex Standard Adjustment 171 165 171   167
IMO Tier II RT-flex Standard Adjustment 173 167   173   169
Part Load,% of R1 85 70 85 70   60
Variable Standard Standard Standard Delat Delat   Low-Load
IMO Tier I 167 166.7   166.7 166   -
IMO Tier II 169.8 169 169.1 167.5   166.5


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