Abstract: Improved methods, systems, and devices for filling fuel tanks, particularly compressed natural gas (CNG) fuel tanks, are provided. Such methods, systems, and devices lower the heat of compression when the fuel tank is being filled to a temperature lower than that if such methods, systems, and devices were not used. Pressure sensor logic on a fuel station will be less prone to error, enabling the tank to be filled more accurately and fully. To lower heat of compression, an insert is placed within the tank. The insert changes the flow characteristics of the fuel that is being delivered into the tank. Typically, the delivered fuel will be released into the interior of the tank in a vortex fashion to fill the tank. Other flow modification devices are also provided including an externally coupled Ranque-Hilsh vortex tube and a flow modification chamber built within a fuel tank.

Abstract: The invention provides systems and methods for mounting a fuel system to a vehicle. In some embodiments, the invention provides systems and methods for mounting a fuel system comprising a fuel tank to a vehicle chassis using a bracket, which may be a multi-part bracket, and may be referred to as a “drop and go” bracket.

Abstract: The invention provides systems and methods for mounting a fuel system to a vehicle. In some embodiments, the invention provides systems and methods for mounting a fuel system comprising a fuel tank to a vehicle chassis using a bracket, which may be a multi-part bracket, and may be referred to as a “drop and go” bracket.

Abstract: The invention provides devices, systems and methods for filling, capping and electronically monitoring the closure of a fuel tank. In some embodiments, the invention provides devices, systems and methods for filling, capping and providing an ignition disconnect mechanism upon uncapping of a natural gas fuel tank.

Abstract: A system for enabling securing devices configured to hold fuels, such as gas cylinders, to frames is provided. The system includes an isolator fastened to the device configured to hold fuel and a strap that is attached to the frame. The isolator includes barriers on either side that prevent longitudinal slipping of the strap and ridges disposed between the barriers, which create cushioning between the strap and the device configured to hold fuel.

Abstract: Systems and methods may be provided for monitoring a fuel level of a vehicle. The fuel may be a gaseous fuel, such as natural gas. An electronic control unit may be able to receive a signal from one or more sensors. The electronic control unit may provide a command to drive a fuel gauge to display the fuel level. The electronic control unit may determine the gauge command based on the received signal and a filling compensation scheme. The electronic control unit may be initialized through a user interface. A filling compensation scheme may be selected during initialization. The electronic control unit may be capable of communicating various sensors, gauges, devices, controls and/or other ECUs of varying specifications.