Operation Manual

Diesel fuel flow sensor kit Installation and Operation Manual
3
NAVMAN
Contents
Contents ................................................................................................. 3
Important ................................................................................................ 5
1 Introduction .................................................................................. 6
1-1 Diesel fuel flow sensor features ................................................. 6
1-2 A typical system ........................................................................... 7
A diesel flow sensor .....................................................................................7
1-3 The bypass valve .......................................................................... 7
2 Understanding boat performance data ...................................... 8
Boats ............................................................................................................8
Fuel Consumption ........................................................................................8
Engine RPM .................................................................................................8
Boat Speed ..................................................................................................8
3 Plotting a fuel consumption curve ............................................. 9
3-1 Fuel consumption table ............................................................. 12
Notes on filling out this table ......................................................................12
3-2 Understanding the fuel consumption curve ............................ 14
A typical fuel consumption curve ................................................................14
Understanding your fuel consumption curve ..............................................14
Note on fuel usage .....................................................................................14
4 Measuring your propeller’s performance ................................ 15
Propeller size .............................................................................................15
Slip factor ...................................................................................................15
Calculating the slip factor ...........................................................................15
Understanding your slip factor ...................................................................16
5 Measuring engine performance ................................................ 17
5-1 Engine power and propeller curves ......................................... 17
The theoretical propeller load curve ...........................................................18
5-2 Specific fuel consumption curve .............................................. 19
6 Diesel fuel flow sensor hardware ............................................. 20
6-1 What comes with your diesel fuel flow sensor kit .................. 20
6-2 Options and accessories ........................................................... 20
Filtering the fuel ..........................................................................................20
6-3 Sensor fittings ............................................................................ 21