A tank arrangement, wherein the fuel tank body comprising a main portion and a secondary portion which comprises an upper portion and an intermediate portion arranged successively along the vertical direction, configured to define a housing to accommodate the urea tank, wherein in an engaged configuration, the urea tank is arranged under the upper portion of the secondary portion along the vertical direction, in abutment on the intermediate portion along the transverse direction, and in abutment on the primary portion along the front-rear direction, wherein the urea tank comprises a urea drain on a lower portion of the urea tank along the vertical direction, the secondary portion of the fuel tank comprises a groove that extends through the fuel tank along the transverse direction, adapted to allow ducts to go through the secondary portion of the fuel tank along the transverse direction to be connected to the urea tank.

The present disclosure relates to a saddle tank for motor vehicles, having two chambers connected to one another in their upper region via a central portion having a reduced cross-section, wherein the first chamber has an access opening for refueling and wherein a fill level-limiting valve is arranged in the second chamber. In order to prevent unwanted swash-over of fuel from the first chamber into the second chamber, provision is made according to the invention for there to be arranged, between the two chambers, a separating body which has a separating wall, which extends over the entire width of the central portion between an upper and a lower wall portion, and a pipe which extends from an opening in the separating wall into the first chamber and allows fluid communication between the first and the second chamber.

A method is provided for estimating a range for a vehicle, where the vehicle includes a combustion engine and a fuel supply system associated with the combustion engine. Vehicle also includes a first main tank for receiving fuel, and a first fuel pump for transfer of fuel from the first main tank to the fuel supply system. The method estimates a range for the vehicle based on data relating to the road ahead of the vehicle and a first measure of residual fuel in the first main tank. The method further controls a required fuel reserve based on the data relating to the road ahead of the vehicle.

A motor vehicle is described, the former comprising an internal combustion engine extending along a direction parallel to a roll axis of the motor vehicle, and a first and a second tank for containing a fuel for feeding the internal combustion engine, wherein the internal combustion engine is arranged between the first and second tanks according to a pitch axis of the motor vehicle, wherein the first tank has a first height according to a yaw axis of the motor vehicle greater than a second height of the second tank according to the yaw axis.

A fuel cell vehicle includes a first tank, a second tank, first and second valves for releasing gas, a gas passage for supplying gas to a fuel cell via the first and second valves, a pressure-reducing valve for decompressing the gas, side members disposed on the respective sides of the vehicle, and a motor disposed rearward of the second tank and configured to drive wheels. The first tank is not disposed downstream of the second tank, on the gas passage. The pressure-reducing valve is disposed in a region located rearward of a rear end of the second tank in a vehicle front-rear direction, forward of a rear end of the motor in the vehicle front-rear direction, and between one of the side members and an extended line extended in the vehicle front-rear direction from a side wall of the motor. The pressure-reducing valve is disposed on the second valve side.

A pressurized liquid fuel tank system arranged to contain a first mass of liquid fuel such, as Dimethyl-Ether (DME) is provided. The system includes a first tank having a first volume, a second tank having a second, volume, a first conduit, between a top of the first tank and a top of the second tank, and a second conduit between the first tank and a bottom of the second tank, wherein a sum of the first volume and the second volume is designed to equal a sum of a first mass volume of the first mass of liquid fuel plus an expansion volume equal to at least 5% of the first mass volume. A vehicle with such a fuel tank system is also disclosed.

A multiple storage tank system includes: storage tanks in which cryogenic fluid is stored; discharge lines connected to the storage tanks to discharge the stored cryogenic fluid or introduce cryogenic fluid; a supply line connected to the discharge lines and a supply target to supply the discharged cryogenic fluid to the supply target; a build-up line branching off the supply line to control internal pressure of a first storage tank of the storage tanks; and a gas transfer line connected to the storage tanks to transfer gas inside the storage tanks, wherein when the internal pressure of the first storage tank is controlled while the cryogenic fluid passes through the build-up line, gas inside the first storage tank is transferred to at least one other storage tank through the gas transfer line so that internal pressure of the at least one other storage tank is controlled.

A vehicle including a pressurized liquid fuel system includes a first pressurized liquid fuel tank arrangement, a second pressurized liquid feel tank arrangement, and a balancing conduit open to a first fuel tank and to a second fuel tank at least one of above a maximum liquid level of the first fuel tank and a maximum liquid level of the second fuel tank and below a minimum liquid level of the first fuel tank and a minimum liquid level of the second fuel tank. A first return line and a second return line to the first and second fuel tanks are configured such that a pressure drop across the first, return line from a pressurized liquid fuel circulation system to the first fuel tank is adapted to be the same as a pressure drop across the second return line from the pressurized liquid fuel circulation system to the second fuel tank. Methods for operating a pressurized liquid fuel system are also disclosed.

A fuel system for supplying gaseous fuel to a power plant comprises a tank array comprising at least first and second tanks, each tank being configured to receive pressurised gaseous fuel for supply to the power plant; and an auxiliary control fluid delivery system. The auxiliary control fluid delivery system comprises a reservoir of auxiliary control fluid; an auxiliary control fluid pipeline, configured to enable supply of the auxiliary control fluid to the tank array so as to cause discharge of the gaseous fuel held in the tank array and to enable return of the auxiliary control fluid from the tank array; and a valve arrangement which is operable to control the supply and return of auxiliary control fluid to and from the tank array, respectively, so as to control the discharge of the gaseous fuel.

Fuel isolation systems, apparatuses and methods are described. In some embodiments, a system comprises a connector coupled inline with a fuel line on a cold side of the fuel line, a valve coupled to the connector, a fluid feed line coupled to a fluid source and to the valve. In the event of an engine fire condition, a control unit outputs signaling to stop pumping the fuel and to operate the valve to introduce fluid from the fluid source into the fuel line. The introduced fluid provides a siphon break in the fuel line such that the only fuel that can pass the firewall is the remaining fuel in the fuel line downstream of the connector and the introduced fluid.