Saturday, December 4, 2010

Cummins 4BT3.9M Fuel Consumption Measurements

So how much fuel does a 150hp Cummins 4BT-3.9M use? The following data was compiled in calm conditions, aboard Nellie D. #63 on the Caloosahatchee Canal west of Lake Okeechobee, Florida. RPM readings came from the helm's VDO tachometer, ground speed came from a Garmin GPS and fuel flow rates came from a Flowscan.

RPMKnotsGPH
6003.3.2
7003.5.3
8003.6.4
9004.2.5
10004.7.6
12005.5.9
13005.81.0
14006.11.2
15006.41.4
16006.71.6
17006.81.7
18007.21.9
19007.52.4
20007.72.8
21007.83.1
22008.03.6
23008.34.3
24008.45.1

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