Abstract: This invention is directed toward a computer-controlled auxiliary fuel tank system that works with both gas and diesel-fueled vehicles, and can operate independently, or in combination with an auxiliary fuel tank, auxiliary fuel pump, sending unit, check valves, inlet and outlet fuel lines, wiring harness, computer module, auxiliary emissions canister assembly, vehicle installation means, and LCD and LED display devices. The invention is not dependent upon any other computer systems and is fully transparent to any on-board systems. In addition to overseeing the transfer of fuel from the auxiliary tank to the OEM tank, the fuel monitoring system (FMS) monitors a variety of functions of the vehicle, and from that data can calculate and display a wide range of information for the user, and is fully user calibratable. The invention not only warns of low fuel situations, but also provides a wide range of diagnostic tools to analyze and display problems with the fuel system.

Abstract: This invention is directed toward a computer-controlled auxiliary fuel tank system that works with both gas and diesel-fueled vehicles, and can operate independently, or in combination with an auxiliary fuel tank, auxiliary fuel pump, sending unit, check valves, inlet and outlet fuel lines, wiring harness, computer module, auxiliary emissions canister assembly, vehicle installation means, and LCD and LED display devices. The invention is not dependent upon any other computer systems and is fully transparent to any on-board systems. In addition to overseeing the transfer of fuel from the auxiliary tank to the OEM tank, the fuel monitoring system (FMS) monitors a variety of functions of the vehicle, and from that data can calculate and display a wide range of information for the user, and is fully user calibratable. The invention not only warns of low fuel situations, but also provides a wide range of diagnostic tools to analyze and display problems with the fuel system.

Abstract: A computer controlled auxiliary fuel tank system provides one or more additional fuel sources as either original equipment with new vehicles, or as an aftermarket addition to an older vehicle. The auxiliary system monitors and controls the on-board testing of each main fuel system, and their associated fuel displays, whether or not the vehicle includes a main fuel computer system. On-board testing is compliant with California Air Resources Board, On Board Diagnostics II, and with the Environmental Protection Agency On Board Diagnostics II) requirements. The auxiliary fuel system comprises an auxiliary fuel tank, having an auxiliary fuel pump, a sending unit, check valves, inlet and outlet fuel lines, a wiring harness, a computer module, an auxiliary emissions canister assembly, vehicle installation means, and LCD and LED display devices. Fuel levels in each tank are read, compared and balanced once every 4 seconds.