The accuracy of this method is even lower, than when using a fuel level sensor, moreover, it strongly depends on the condition of engine nozzles (the algorithm calculates the flow rate by the duration of the nozzle opening). Unfortunately, a fuel level sensor cannot detect drains from the return line.Īnother option is fuel monitoring using CAN bus data. However, there is also a weak point here – fuel drain from the engine return line, where the drivers make hidden tie-ins. In some extent, fuel level sensor can solve the problem of illegal draining fuel from the tank: the sensor provides data on refueling at gas stations and fuel drains from the tank. If the fleet is not equipped with fuel monitoring hardware, the driver can refill his oilcan (since established average fuel consumption quotas are much higher than the actual consumption is) or sell fuel, that remains, cheaper than a gas station. That’s why key goals of vehicle fleet, which is aiming at reducing fuel expenses, are finding out real fuel consumption and preventing fuel theft. Carried cargo can be spoiled in transit in such a case and you will have to pay the damages. It happens that drivers of the refrigerator truck turn off the icebox when driving and grab all fuel “saved”. Meanwhile, drivers came up with a lot of different tricks to steal fuel: they overstate fuel consumption in trip tickets and understate fuel residue, drain the fuel from tank, refill their own oilcans instead of company-provided vehicle, make tricks with till slips and get into cahoots with fuel station operators.
Mass fuel theft occurs when the lack of control takes place: the management of a vehicle fleet does not use fuel monitoring systems. The problem is especially relevant for special machinery fleets, where fuel consumption and operating time of vehicles is accounted using engine hours. Losses from fuel theft can amount to 40% of fuel and lubricant materials financing.
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