M

UT Or

120 150 200 220

Engine speed (rpm)

Figure 11.6 Performance curves of 8UEC 33LSII engine (4316 kW at 210 rev/min)

Calculation of fuel consumption at maximum

Calculation of fuel consumption at maximum

Figure 11.7 Improvement of fuel economy by derating a UEC 85LSII engine

Figure 11.7 Improvement of fuel economy by derating a UEC 85LSII engine set as design goals for the project to be pursued by a joint working group of engineers from both companies. The new engine was assigned for production in Japan by Mitsubishi and its licensees and by other Japanese licensees of Wartsila, and in Korea and China by Wartsila and Mitsubishi licensees. Separate branding—Sulzer or Mitsubishi— will be applied to the engines, depending on the builder. The first examples are due for completion by end-2004.

Mitsubishi-Sulzer RTA50C/RT-flex50C

Bore

500 mm

Stroke

2050 mm

Stroke/bore ratio

4:1

Output, mcr

1620 kW/cyl

Mep (R1)

19.5 bar

Pmax

155 bar

Mean piston speed (R1)

8.5 m/s

Cylinders

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