Determination F-FLOW
Page 1/2
Flow determination F-FLOW
To determine the relationship between pump voltage and flow rate of the pump the following
methods can be done:
1.
Ask your manufacturer or supplier
Unless shown in the technical documentation, the flow rate of the fuel pump to the engine
for a voltage at 1.5V and 3.0V could be requested from the manufacturer.
2.
Measurement with flowmeter
If present, a flow meter can be connected into the line between the pump and turbine. Read
the flow rate at running turbine. Adjust the throttle value so that the EDT-terminal displays
voltages of the pump of 1.5V and 3.0V.
3.
"gauging"
This requires an appropriate "measurement vessel". Suitable means that you can attach
labels to them as closely as possible. Later it will be necessary to refill up to this label.
Furthermore, stopwatch and graduated cylinder / measuring cups, etc. are required.
The EDT-terminal is connected to the ECU. The display for the pump voltage is selected.
The pump delivers from the "Measuring Cup".
Procedure: 1. Start the engine.
2. Use the throttle so that the pump voltage levels off at 1.5V and 3.0V.
3. Install the first mark on the "measuring cup", start stopwatch.
4. Stop the engine after a minute –
the results are more accurate when
measured over several minutes
.
5. Refill fuel by means of a measuring cylinder (ml scale) back up to the mark.
The amount of the filled fuel divided by the number of minutes over which
the measurement was made, is the consumption in ml / min.
4.
„trial an error“ - or fine adjustment
By trial and error you can also grope one's way towards an "appropriate" setting or adjust
the factory setting on the model conditions. The two charts below are intended to illustrate
how a value change takes effect:
5.
Internet
In many internet forums the topic is certainly treated.
1,5
3,0
FP in V
F-FLOW in ml/min
change
F-FLOW
at pump voltage
@1.5V
F-FLOW in ml/min
1,5
3,0
FP in V
change
F-FLOW
at pump voltage
@3.0V
