This instruction is about Fuel tank report parameters at the admin panel, and how to set it to receive the fuel data with maximum accuracy. Also how to have visual fuel drains and fills.
The fuel tank report must be corrected if the fuel data is needed at Fleet status > Select object > Fuel.
Before editing any parameters in the fuel tank report, at the custom inputs field, there is Fuel level input:
If for the object there is no additional Fuel level sensor (FLS) installed, the Fuel level must be set to CAN fuel level1 or CAN fuel level liters, it depends on which parameter is received from the object. If the FLS is installed, then it must be set according to FLS installation - Digital fuel level sensor or AIN(Analog input).
When the fuel level is represented at the TT2, the Fuel tank report parameter values need to be set according to the tank size for the proper filtration, the values can be taken from templates, these in the screenshot are the common ones:
These templates are based on fuel tank size and fuel level source. For example, if the fuel level is received from the CAN, the object is heavy transport and it has an 850L fuel tank capacity then the needed report would be Standard HCV (because of the heavy transport) CAN (because of the source of the fuel level) 500 to 1000 (because of the fuel tank capacity) - Standart HCV CAN 500 to 1000.
Sometimes the clients are contacting about the fuel level results and they require additional configuration, most of the time the objects that represent incorrect fuel fill/drain data represent fuel level via CAN. Then the different parameters can be reconfigured, here are all of the fuel tank report parameters descriptions:
General section:
Fuel Variation – all fills and drains lower than the set value will be filtered out and not detected
Refueling section:
Refueling speed(l/min) – If the fuel fill was slower than the set value per 1 minute then the fill will be not detected.
Refueling amount (l) – The minimum amount of filled fuel, if the fuel fill was lower than the value it will not be detected.
Settle time (sec) – After the fuel is filled the system will wait X sec time and only after will recalculate the fuel level once again.
Averaging period before (sec) (Is fully disabled so it wont affect anything)– Based on the set value the system will recalculate the fuel level before the fuel filling, to receive the most accurate value.
Averaging period after (sec) (Is fully disabled so it wont affect anything)– Based on the set value the system will recalculate the fuel level after the fuel filling, to receive the most accurate value.
Fuel drain section:
Check data from CAN – If the parameter is on it will try to detect fuel drains based on fuel consumption.
Detect drain while moving – If the parameter is on it will detect the fuel drains while the unit is moving.
Settle time (sec) – After the fuel drain, the system will wait X seconds to recalculate the fuel level.
Averaging period before (sec) (Is fully disabled so it wont affect anything) – Based on the set value the system will recalculate the fuel level before the fuel drain, to receive the most accurate value.
Averaging period after (sec) (Is fully disabled so it wont affect anything) – Based on the set value the system will recalculate the fuel level after the fuel drain, to receive the most accurate value.
Error filtration can be on or off, it works as one unit, separate parameters can’t be enabled or disabled:
Time before drain (sec) – The system will check for fuel fluctuations of x period before the drain and will filter found amount (amount is set at the next window).
Variation before drain (l) – The system will check for x fuel amount drains before the drain was detected in the period (time is set in a previous window).
Time after drain (sec) – The system will check for fuel fluctuations of x period after the drain and will filter found amount (amount is set at the next window).
Variation after drain (l) - The system will check for x fuel amount drains after the drain was detected in the period (time is set in a previous window).
Filter section:
Same time filter - If the value per minute is received a few times the system will calculate the average value of it. The option is enabled by default.
Consumption filter - by enabling this parameter, the system will filter out the fuel level value that is higher than the fuel tank volume.
Smooth filter - the fuel level is calculated by taking the fuel level from the last
coordinate + (current fuel level – fuel level from the last coordinate) * 0,5. This is calculated only if
the difference between two coordinates is smaller than the set allowed fuel variation. This option
is enabled by default.Spike filter - If enabled, fuel level value coordinate is set to average (coordinates of before and
after) If that coordinate (and only that coordinate) has a fuel level value larger than the fuel
variation values + fuel level of the coordinate before.
After all the values are settled write the date from which fuel level data is needed (maximum 3 months) and after a while, the data will be recalculated.
Recommendations
All vehicles are different with different fuel tank sizes, shapes, and placements, also the fuel level representation is related to the acceleration speed and braking. The same template or parameters will provide slightly different fuel level values. The basic recommendations to configure the fuel tank report:
Fuel variation –this parameter should be set around 1,5%-2,5% of the total fuel tank capacity. The actual percentage depends on the installation quality of the FLS, if the FLS is sending constant accurate readings it is possible to lower the fuel variation value even lower.
Settle time -widely depends on the fuel tank capacity and form; it is normally recommended to keep the value around the default. If this setting is used for a light vehicle with a fuel tank capacity of up to 100 liters, settling time can be divided by 2.
The refueling amount widely depends on the fuel tank capacity. It is less likely for a fuel tank of 1000 liters to make refuels less than at least 20 liters, while a light vehicle is more likely to make refuels even for 5 liters.
Refuel averaging periods should be set around twice the amount of the settling time for most accurate readings but, should not be less than 60 seconds.
If there is a need for more detailed information it can be found here: https://ruptela.atlassian.net/wiki/pages/viewpageattachments.action?pageId=4595042&preview=%2F4595042%2F4603254%2FEN%20Fuel%20tank%20report%20instruction%20manual%20v0.3.pdf