A system that includes a vehicle fuel-receiver comprising a port located on a vehicle surface; and an onboard computer programmed to: send a fuel delivery request to an unmanned aerial vehicle (UAV); actuate the port to permit the UAV to deliver fuel; and instruct a communication module to transmit a beacon signal to the UAV.

Methods and systems are provided for conducting a fuel tank diagnostic. In one example, a method comprises sealing a fuel tank of a vehicle, retrieving data related to fuel tank pressure from a crowd of vehicles, and indicating the fuel tank of the vehicle being diagnosed is degraded responsive to data related to fuel tank pressure from the crowd insufficiently correlating with a set of data related to fuel tank pressure from the vehicle. In this way, fuel tank degradation may be indicated without coupling the fuel tank of the vehicle to atmosphere, which may reduce a release of undesired evaporative emissions to atmosphere.

A remote monitoring system that controls fluid level in fuel storage tanks of mining trucks includes a device that measures fluid level in fuel storage tanks of mining trucks resistant to rapid filling that protects a sensor inside the device, including a protective metallic tube; a level sensor arranged inside the protective metallic tube; and an anchorage system connected to the protective metallic tube with the tank allowing fluid communication inside the tank with fluid inside the protective metallic tube; antennas; Web server; remote means; and a power source.

This invention is a sensor probe, generally used in the oil fracking business, and includes structurally a pair of tube members, concentrically assembled, an inner housing tube, and an outer spout tube, affixed to a cap and adaptor, with the inner housing holding one or more sensors, to detect the level of fuel within the fuel tank of the fracking truck. The adaptor has a first aperture for attachment of the fuel line, for delivery of fuel in the space between the tube members, and the adaptor has a second aperture for connection of an electrical receptacle, for attachment with the electric lines leading from the various sensors, to the adaptor, for connection with a circuit line from a remote monitor.

A fuel conveying device having a pumping stage, an electric motor to drive the pumping stage, a control unit, a magnetoresistive fill level sensor that generates a fill level signal, including a temperature-effect compensator that generates a compensation signal to compensate for temperature-related influences on the fill level signal, and an evaluation unit (5) designed such that the temperature of a fluid surrounding the fill level sensor can be determined by the evaluation unit by the compensation signal. A fuel tank equipped with a fuel delivery device of said type, a method for determining the temperature of a fluid inside a fuel tank, a method for controlling and/or regulating an electric motor, and a method for controlling and/or regulating an injection of fuel vapors to a combustion process of an internal combustion engine.

An electronic liquid level gauge assembly includes an electronic display located in a housing connected to a tank. The display has first and second display portions for indicating liquid level condition. A first electronic sensor senses a change in magnetic field of a magnet associated with a liquid level transducer, with magnet rotation being proportional liquid level change. A processor determines a temperature-compensated liquid level condition by correlating the liquid level signal with temperature measurement of the liquid. A temperature-compensated vapor space can also be calculated based on tank information and properties of the liquid. Signals related to the temperature-compensated liquid level and vapor space are sent to the display and wirelessly transmitted to a smart phone or the like for remotely viewing the tank information. The smart phone also includes a special app for sending information, firmware updates, and display configuration data to the electronic gauge assembly.

Embodiments include systems and methods of reporting the fuel level in a fuel tank of a vehicle. The method includes receiving a fuel consumption curve and a fuel refill curve, receiving a first fuel level value and a second fuel level value from a fuel level sensor; and determining whether the vehicle is consuming fuel or receiving fuel based on a change between the first fuel level value and the second fuel level value. In response to determining that the vehicle is consuming fuel, the method further includes determining a fuel gauge display value based on the second fuel level value and the fuel consumption curve. In response to determining that the vehicle is receiving fuel, the method further includes determining a fuel gauge display value based on the second fuel level value and the fuel refill curve. The fuel gauge display value is presented on a fuel gauge display.

Embodiments include systems and methods of reporting the fuel level in a fuel tank of a vehicle. The method includes receiving a fuel consumption curve and a fuel refill curve, receiving a first fuel level value and a second fuel level value from a fuel level sensor, and determining whether the vehicle is consuming fuel or receiving fuel based on a change between the first fuel level value and the second fuel level value. In response to determining that the vehicle is consuming fuel, the method further includes determining a fuel gauge display value based on the second fuel level value and the fuel consumption curve. In response to determining that the vehicle is receiving fuel, the method further includes determining a fuel gauge display value based on the second fuel level value and the fuel refill curve. The fuel gauge display value is presented on a fuel gauge display.

Methods and devices are disclosed for determining and displaying the current fuel level to a vehicle operation while the vehicle ignition is turned off. An example vehicle includes a fuel tank including a fuel sensor, one or more external vehicle displays, and a processor. The processor is configured to determine a current fuel level of the fuel tank, determine a cost to fill the fuel tank, and display the current fuel level and the cost to fill the fuel tank on the one or more external vehicle displays, while a vehicle ignition is turned off.

A method for checking a measurement of pressure in a fuel tank, implemented in a vehicle having a fuel tank and a fuel vapor breather circuit including: a filter, a tank isolation valve interposed between the tank and the filter, and a purge line, connected to the filter, downstream thereof, a pressure sensor, and a purge valve. The method includes, when the purge valve is closed: measuring a value of the pressure in the tank when the isolation valve is closed, then measuring a temporal extreme value for the pressure in the purge line following an opening of the isolation valve, and determining, from the measured values, that there is an anomaly in the measured pressure in the tank.