Engines/Fuel - Bayliner 4087 Operation Manual

A. Specifications
Twin Cummins Turbocharged Diesel - 270 HP
Cruise RPM 2200 @ 18 Kts (21 mph)
Fuel consumption: For best economy cruise, we recommend operating both
engines between 1000 and 1200 RPM (8-10 mph) to achieve the best fuel
economy (up to 3 miles per gallon of fuel (with slack tide).
fuel mileage will be less. Max cruise at 2200 RPM (21 mph) the boat will travel
1.2 miles per gallon of fuel.
Miles per Gallon (mpg)
6.0
5.0
5 mph
4.0
(1.2 gph)
3.0
2.0
600
1.0
0.0

Engines/Fuel

Sunshine Fuel Economy
(Slack tide, Actual GPS sog, Cummins 270B fuel consumption curve)
7 mph (1.2 gph)
8 mph (2.6 gph)
9.8 mph (3.8 gph)
1000 1200 1400
800
Engine RPM
5
11 mph (5.0 gph)
12 mph (7.2 gph)
14 mph (9.6 gph)
1600 1800 2000
17 mph
The faster you go,
2200 2400
(12.8 gph)
19.5 mph (17.0 gph)
22 mph (23.6 gph)
5/27/11 test data