Methods and systems are provided for identifying misfueling of a vehicle fuel tank with a fuel that is not of a correct type for the vehicle being refueled. In one example, and method may include routing fuel vapors from a vehicle fuel tank to a fuel vapor storage canister during a refueling operation, and responsive to an indication of misfueling, where the indication of misfueling includes a monitored pressure in the fuel tank below a misfueling pressure threshold, and where the misfueling pressure threshold is adjusted as a function of expected pressure in the tank during refueling, actively terminating the refueling event. In this way, addition of an incorrect fuel type to a vehicle fuel tank may be indicated prior to completion of refueling, which may thus alert a vehicle operator of the misfueling, and which may prevent further complications arising from operating the vehicle with an incorrect fuel type.

A working vehicle according to the present invention is configured with a fuel tank, a fuel sensor for detecting an amount of fuel stored in the fuel tank, and an informing device (a controller, informing switch, and speaker) for informing the stored amount of fuel detected by the fuel sensor, by changing the informing pattern in response to this stored amount of fuel. The working vehicle is also configured with an exhaust gas purification system for purifying exhaust gas using urea water, a urea water tank, a urea water sensor for detecting the amount of urea water stored in the urea water tank, and an informing device (the controller, informing switch, and speaker) for informing a stored amount of urea water detected by the urea water sensor, by changing the informing pattern in response to this stored amount of urea water.

Methods and systems are provided for enabling a vehicle operator to select a desired amount of fuel to add to a fuel tank, and wherein overfilling of the tank is prevented by pressurizing the fuel system with an onboard pump. In one example, the tank may be sealed to induce an automatic shutoff of a refueling dispenser if the fuel level is below the capacity of the tank, and in another example, wherein it is indicated that the tank is full, the fuel system may be pressurized via the pump to induce automatic shutoff of the refueling dispenser and to prevent further overfilling of the tank. In this way, vehicle operators may add desired amounts of fuel to the tank wherein shutoff of the refueling dispenser is automatic, and wherein liquid fuel entering an evaporative emissions control system as a result of overfilling a fuel tank is prevented.

Methods and systems are provided for enabling a vehicle operator to select a desired amount of fuel to add to a fuel tank, and wherein overfilling of the tank is prevented by pressurizing the fuel system with an onboard pump. In one example, the tank may be sealed to induce an automatic shutoff of a refueling dispenser if the fuel level is below the capacity of the tank, and in another example, wherein it is indicated that the tank is full, the fuel system may be pressurized via the pump to induce automatic shutoff of the refueling dispenser and to prevent further overfilling of the tank. In this way, vehicle operators may add desired amounts of fuel to the tank wherein shutoff of the refueling dispenser is automatic, and wherein liquid fuel entering an evaporative emissions control system as a result of overfilling a fuel tank is prevented.

A working vehicle according to the present invention is configured with a fuel tank, a fuel sensor for detecting an amount of fuel stored in the fuel tank, and an informing device (a controller, informing switch, and speaker) for informing the stored amount of fuel detected by the fuel sensor, by changing the informing pattern in response to this stored amount of fuel. The working vehicle is also configured with an exhaust gas purification system for purifying exhaust gas using urea water, a urea water tank, a urea water sensor for detecting the amount of urea water stored in the urea water tank, and an informing device (the controller, informing switch, and speaker) for informing a stored amount of urea water detected by the urea water sensor, by changing the informing pattern in response to this stored amount of urea water.

A fuel spill prevention device is disclosed that comprises a body section defined by a first end and a second end. The body section is hollow throughout and has a first opening disposed at the first end and a second opening disposed at the second end. Both the first and second openings are in communication with an interior of the body section. The body section is further comprised of at least a first subsection and a second subsection, wherein the first subsection has a diameter that is larger than a diameter of the second subsection.

The present invention provides an integrated auxiliary fuel oil tank for a vehicle, which structurally includes a fuel oil tank body, wherein a gear pump assembly and a coarse filter are mounted on the inner side of the fuel oil tank body, and a fuel oil suction passage passing through the coarse filter and a fuel oil return pipeline are arranged between the fuel oil tank body and an engine fuel oil system. The gear pump assembly is provided with a first passage during forward rotation, and a fuel oil filling passage is arranged between the main fuel oil tank of the vehicle and the fuel oil tank body. The gear pump assembly is further provided with a second passage during reverse rotation, and an active fuel oil supply passage is further arranged between the fuel oil tank body and the engine fuel oil system.