A fuel-feeding device may include a fuel tank storing fuel therein, a fuel pump configured to feed the fuel in the fuel tank to an engine through a fuel-feeding conduit, an aspirator configured to generate a negative pressure therein using a flow of the fuel flowing through a branched conduit branched from the fuel-feeding conduit, a negative pressure sensor configured to detect the negative pressure generated by the aspirator, and a control device configured to control a revolution speed of the fuel pump. The control device is configured to determine a sign of vapor generation in the fuel stored in the fuel tank based on detection information of the negative pressure sensor.

A universal fuel-supply assembly is adaptable during manufacturing to be made for use with one of multiple different fuel types (e.g., gasoline or diesel fuel). A method for assembling a fuel-supply assembly includes providing a plate structure configured to be secured to a fuel tank. The plate structure has multiple bosses. According to one example, the method determines whether the fuel-supply assembly is for use as a diesel fuel-supply assembly or as a gasoline fuel-supply assembly. The method provides an opening through one of two different bosses that communicates with both the top side and the bottom side of the plate structure depending on whether the fuel-supply assembly is for use as a diesel fuel-supply assembly or a gasoline fuel-supply assembly.

A vehicle tank pressurization device has a valve seat establishing an opening for fuel vapours and/or air; such opening has a vertical axis coincident with the direction of application of an opening force, that is directed upwards and is produced, in use, by the pressure in an internal upper region of the tank; the device also has a movable shutter, placed on the valve seat, to open/close the valve seat, and having a weight set by design in such a way as to define the magnitude of a closing force directed downwards and with a center of gravity positioned eccentrically with respect to the vertical axis of the opening.

A transport refrigeration system (200) comprising: a vehicle (102) having a refrigerated cargo space (119); a refrigeration unit (22) in operative association with the refrigerated cargo space, the refrigeration unit providing conditioned air to the refrigerated cargo space; a first engine (26) configured to power the refrigeration unit; a plurality of first fuel tanks (330) fluidly connected to the first engine, the plurality of first fuel tanks configured to supply fuel to the first engine, wherein each of the plurality of first fuel tanks includes a lock off valve (450) and a pressure sensor (470) configured to detect a pressure level within each of the first fuel tanks; and one or more engine controllers (54) in electronic communication with each pressure sensor and lock off valve, the one or more engine controllers being configured to adjust at least one of the lock off valves in response to a pressure level detected by at least one of the pressure sensors.

A fluid system for a vehicle is provided. The fluid system is configured to couple to a chassis of the vehicle. A frame assembly of the fluid system is configured to couple with the chassis directly or with another component that is coupled, directly or indirectly, with the chassis. A cowling of the fluid system can enclose a fuel pressure vessel and an auxiliary fluid vessel. The auxiliary fluid vessel is configured to be placed in fluid communication with the component powered or operated by the fluid therein.

A fuel filler device for filling fuel into a vehicle tank, includes a filler pipe for receiving a fuel filler nozzle, which filler pipe can be connected with the vehicle tank. At least one pivotably mounted closing flap is arranged in the filler pipe. A spring element is provided, which biases the at least one closing flap into a closing position closing a passage through the filler pipe. The at least one closing flap is pivotable from the closing position into an opening position opening a passage through the filler pipe as a result of the fuel filler nozzle inserted into the filler pipe. At least one valve element forms at least one bypass to the at least one closing flap, and from a limit pressure difference, allows a passage of gas out of the filler pipe and/or into the filler pipe.

A fuel tank isolation solenoid valve for a vehicle is provided. The fuel tank isolation solenoid valve may include a first plunger configured to be vertically movable and a second plunger configured to move along a plunger rotation path such that the plunger is mechanically maintained in an opened position or a closed position while no power is applied to a coil.

A portable fuel tank that is configured to be operably secured to an apparatus having a combustible engine so as to provide fuel for the operation thereof. The portable fuel tank includes a body having walls, top and a bottom integrally formed to create an interior volume for receiving and storing fuel. The body has a one-way valve secured to the top thereof. A fuel cap is hermetically sealed to the body and includes a fuel pickup line operably coupled thereto. The fuel transfer line is fluidly coupled to the machine having the combustible engine and includes a one-way valve and a quick connect assembly. Locking tabs are provided to secure a first portable tank to a second portable tank. A mateable fastener is formed in the body of the tank and is configured to be releasably secured to a mateable fastener on the machine.

A discharge connection, an inlet pipe, an outlet pipe and a drain channel are provided. On an outer end, the outlet pipe has an outwardly closing check valve with a valve body and a valve seat. The outlet pipe has a first coupling geometry at the outer end, which can be interlockingly connected to a conduit coupling. The check valve is designed to be moved from the valve seat into a open position, spaced apart from same, by a profile element projecting into the outer end.

An evaporation leakage checking system includes a pump, a pump passage unit, a tank passage unit, a specified passage unit, an atmosphere passage unit, a flow-passage area changing unit, an atmosphere valve unit, a pressure sensing unit, and a control unit. The control unit includes a calculating unit that calculates a leakage threshold, based on a first pressure, a first area, an Nth pressure, an Nth area, and a reference area that is predetermined, and a leakage checking unit that activates the pump, closes the atmosphere passage unit by changing the flow-passage area of the atmosphere passage unit by using the atmosphere valve unit, and checks the existence of the evaporation leakage based on the leakage threshold and a checking pressure that is the pressure sensed by the pressure sensor in a case where a communication between the tank passage unit and the pump passage unit is allowed.