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28th Aug. 2013 RT-flex50-B and 50-D with extended power range

Nowadays the lower speed and powered engines are requested by shipyards and ship-owners for the environment friendly vessels.
To meet such market requirements, the power rang of RT-flex50-B / 50-D to Handymax BC or others have been extended.

 

■ Key changes: power and engine speed at R4 level
Lower the speed of both type engines from 99min-1 to 95min-1.
Lower the power/cyl of RT-flex50-B from 1,160kW/cyl to 970kW/cyl.
Lower the power/cyl of RT-flex50-D from 1,220kW/cyl to 1,020kW/cyl.

 

■ Fig 1 : R1 to R4: speed and engine power

 

R1

R2

R3

R4

RT-flex50-B

Min-1

124

124

95

95

kW/cyl

1660

1265

1275

970

RT-flex50-D

Min-1

124

124

95

95

kW/cyl

1745

1330

1340

1020

 

■ Fig 2 : extended power range : RT-flex50-B & RT-flex50-D

extended power range


■ Fig 3 : Handysize BC Case Study

case study

(Example of application) maximum continuous power: 7,000kW/108rpm

 

Although 5RT-flex50-D or 6RT-flex48T-D type engine is the only choices as main engine for Handysize BC, 6RT-flex50-D can be applied in accordance with the extended power range.

 


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