A jet and venturi tube arrangement is provided for a fuel delivery module. The arrangement includes a venturi tube 14 having an opening 15, an internal wall 24 and a central axis C. A jet 10′ is provided that has an exit 22. The jet 10′ is constructed and arranged to spray a stream 12 of fuel from the exit 22 into the opening 15 of the venturi tube 14 substantially along the central axis C. The jet 10′ has surface features 20, near the exit, constructed and arranged to divert a portion 12′ of the stream 12 of fuel so that the portion 12′ contacts the internal wall 24 of the venturi tube 14 thereby limiting back flow of fuel through the opening of the venturi tube.

An assembly is provided that integrates a jet pump with a liquid trap to drain liquid fuel from vapor flow, such as vapor vented from a fuel tank. The assembly includes a housing that has a liquid trap configured to trap liquid carried in vapor flowing through the housing. A jet pump has a venturi nozzle and is in selective fluid communication with the liquid trap so that liquid flow through the venturi nozzle induces draining of the liquid trap.

A fuel supply device includes a filter device, a pump, a suction pipe, and a bubble removing device. The filter device includes a first filter that filters a fuel, a filter chamber surrounded by the first filter, and a filter opening that is in fluid communication with the filter chamber. The pump has a pump suction port for drawing the fuel from the filter chamber. The suction pipe fluidly connects the filter opening to the pump suction port. The bubble removing device is disposed in at least one of the filter device and the suction pipe. The bubble removing device includes a valve device that is configured to discharge a bubble contained in the fuel to the internal space of the fuel tank, and a foreign matter regulator that is disposed between the valve device and the internal space and that regulates or prevents a foreign matter contained in the fuel from flowing into the fuel supply device.

A swirling wall structure-extends from a lower side toward an upper side in a sub-tank, and a fuel flow, which is outputted into an inside of the sub-tank from a flow outlet of a diffuser passage opened toward a lateral side, is swirled by the swirling wall structure. The swirling wall structure-includes a curved wall surface and a U-turn wall surface. The curved wall surface is curved about a longitudinal axis, which extends from the lower side toward the upper side in the sub-tank, to bend the fuel flow outputted from the flow outlet. The U-turn wall surface extends continuously from the curved wall surface to make a U-turn of the fuel flow, which is bent by the curved wall surface.

The invention relates to a tank assembly (5) having a tank container (10), a swirl pot (20) and an eductor pump (30), wherein a nozzle (32) of the eductor pump (30) is arranged on an upper side (16) of the tank container (10) at a distance above a swirl pot opening (22) of the swirl pot (20).

A fuel supply device of an engine includes a primary pump suctioning fuel to discharge the fuel to a first pipeline, a secondary pump connected in series to the primary pump via the first pipeline, and suctioning the fuel from the primary pump to supply the fuel through a second pipeline to an engine side, a tank storing the fuel and accommodating the secondary pump, an outflow part causing part of the fuel flowing from the first pipeline through the secondary pump to the second pipeline in the tank to flow outward, a third pipeline returning, to a suction side of the primary pump, gas-liquid mixed fuel generated by vaporizing the fuel flowing out from the outflow part, and a preloading part in one of portions of a circulation path formed between the primary pump and the tank by the first pipeline and the third pipeline and preloading the fuel.

Fuel isolation systems, apparatuses and methods are described. In some embodiments, a system comprises a fuel tank, a fuel pump, an engine, a firewall, a fuel line from the fuel tank to the engine, a connector coupled inline with the fuel line on a cold side of the fuel line, a valve coupled to the connector, an air feed line coupled to an air source and to the valve. In the event of an engine fire condition, a control unit outputs signaling to turn off the fuel pump and operate the valve to introduce air from the air source into the fuel line. The introduced air 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 air.

A sender gauge adaptor includes an adaptor body pressed against a bottom wall of a fuel tank by a spring. The adaptor body includes a suction inlet part having a hollow cylindrical shape that opens downward. Recesses allowing fluid communication between the interior and the exterior of the suction inlet part and projection parts having a polygonal-shaped lower surfaces are alternately arranged in the circumferential direction along a lower end of the suction opening. The adaptor body includes a seat part in surface contact with the bottom wall of the fuel tank at a position below the lower surfaces of the projection parts.

The present disclosure is related to a method and an assembly for delivering fuel in a fuel tank (10), wherein the fuel tank comprises at least a first chamber (12) having a module pot (18) disposed therein and at least a first pump (30) adapted to deliver fuel from the first chamber to the module pot, and wherein a fuel pump (20) for delivering fuel to an engine is disposed within the module pot. In order to minimize the duty cycle of the pumps and therefore the energy consumption, it is proposed according to the present disclosure that a sensor device (22) is used to detect a predetermined minimum fill level in the module pot, wherein the pump disposed in the first chamber is activated when the minimum fill level is reached and is deactivated after a predetermined time interval or when a predetermined higher fill level in the module pot is reached.

A sender gauge adaptor includes an adaptor body pressed against a bottom wall of a fuel tank by a spring. The adaptor body includes a suction inlet part having a hollow cylindrical shape that opens downward. Recesses allowing fluid communication between the interior and the exterior of the suction inlet part and projection parts having a polygonal-shaped lower surfaces are alternately arranged in the circumferential direction along a lower end of the suction opening. The adaptor body includes a seat part in surface contact with the bottom wall of the fuel tank at a position below the lower surfaces of the projection parts.