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Position: Engine»Diesel Engine»Marine Engine

RT-flex 50-D

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 to 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 21.0bar 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 8725 6100 6975 6100 5582   200
6 10470 7320 8370 7320 6462   225
7 12215 8540   9765 8540 7342   255
8 13960 9760 11160 9760 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   21 14.7 21 18.4
IMO Tier I RT-flex Standard Adjustment 169 163 169 165
IMO Tier II RT-flex Standard Adjustment 171 165   171   167
Part Load,% of R1 85 70 85 70   60
Variable Standard Standard Standard Delat Delat   Low-Load
IMO Tier I 165 164.7   164.7 164   -
IMO Tier II 167.8 167 167.1 165.5   164.5


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