A fuel tank system constructed in accordance to one example of the present disclosure includes a fuel tank, a first vent tube, an evaporative emissions control system and a cam driven tank venting control assembly. The first vent tube is disposed in the fuel tank. The evaporative emissions control system is configured to recapture and recycle emitted fuel vapor. The evaporative emissions control system has a controller. The cam driven tank venting control assembly has a rotary actuator that rotates a cam assembly based on operating conditions. The cam assembly has at least a first cam having a first cam profile configured to selectively open and close the first vent tube based on operating conditions.

An unmanned aerial vehicle has an internal combustion engine, and a fuel and lubrication system comprising a fuelling system for fuelling the engine and a lubrication system for delivering lubricating oil to the engine. The fuelling system comprises a fuel reservoir from which fuel can be delivered to the engine. The fuel reservoir comprises a main tank and a header tank. The lubrication system comprises an oil tank. The oil tank is accommodated internally within the main tank to provide an integrated assembly. The arrangement provides for warming of lubrication oil for the UAV engine using several available heat sources. Further, the arrangement facilitates a configuration and layout intended to minimise or negate any undesirable moments of inertia for the UAV during flight as fuel and oil is consumed.

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.

A fuel pump module for a fuel tank providing improved rigidity includes a first module and a second module. The first module includes a first tank having a first tank room, a direct injection (DI) fuel pump and filter, a port injection (PI) fuel pump and filter, a subtank, and a first flange supporting the filter, the pump, and the like. The second module includes a second tank having a second tank room where fuel is stored separately from the first tank room, a PI filter, a second jet pump, a second flange supporting the filter, the pump, and the like. As a result, a size of two flanges supporting two fuel pumps and two filters is reduced, thereby, reducing a size of two openings of the fuel tank.

A fuel supply system for a vehicle having an internal combustion engine and a fuel tank, has a reservoir, a fuel pump, a suction filter, a fuel transfer and a pressure accumulator. The reservoir is located in the fuel tank and is hermetically sealed. The fuel pump is configured to suck fuel from the reservoir and to supply the fuel to the internal combustion engine. The suction filter is configured to filter the fuel sucked by the fuel pump. The fuel transfer is configured to transfer the fuel from the fuel tank into the reservoir and to pressurize the fuel in the reservoir. The pressure accumulator is connected to the reservoir in order to control a pressure of the fuel in the reservoir.

A sensor device 1 includes a fuel property sensor 5 configured capable of detecting a property of fuel that is ejected from a fuel pump 4 in a feel tank 2; a guiding line 12 configured to guide fuel ejected from the fuel pump 4 to the fuel property sensor 5; and a relief valve 21 configured to allow fuel to flow out of the guiding line 12 when a pressure of fuel in the guiding 12 becomes equal to or higher than a predetermined pressure.

An operating medium vessel for a vehicle is provided for storing liquid operating medium and has: a withdrawal section with a reservoir pot arranged therein; a feed section which is connected fluid-conductively to the withdrawal section and is adjacent to the withdrawal section; and an operating medium delivery system with an operating medium reservoir arranged in the feed section, and with a first delivery device and a second delivery device. The first and the second delivery devices are each fluid-conductively connected to the operating medium reservoir. The first delivery device is designed to deliver operating medium out of the feed section from outside the operating medium reservoir into the operating medium reservoir, and the second delivery device is designed to deliver operating medium from the operating medium reservoir into the reservoir pot.

An operating medium vessel for a vehicle is provided for storing liquid operating medium and has: a withdrawal section with a reservoir pot arranged therein; a feed section which is connected fluid-conductively to the withdrawal section and is adjacent to the withdrawal section; and an operating medium delivery system with an operating medium reservoir arranged in the feed section, and with a first delivery device and a second delivery device. The first and the second delivery devices are each fluid-conductively connected to the operating medium reservoir. The first delivery device is designed to deliver operating medium out of the feed section from outside the operating medium reservoir into the operating medium reservoir, and the second delivery device is designed to deliver operating medium from the operating medium reservoir into the reservoir pot.

A jet pump is provided. The jet pump includes a body defining a fuel passage therein. The body includes an inlet and at least one exit orifice. The at least one exit orifice is downstream from the inlet in a direction of fuel flow from the inlet to the at least one exit orifice. A flow path is defined through the fuel passage from the inlet to the at least one exit orifice. A flow restrictor is disposed in the fuel passage between the inlet and the at least one exit orifice. The flow restrictor reduces dynamic pressure within the fuel passage and allows for increasing a cross-sectional area of the at least one exit orifice. A jet pump assembly including the jet pump and at least one fuel reservoir refill passage is also provided. A fuel system including the jet pump assembly and a fuel pump is further provided.

A fuel system having a hydrogen fuel tank for fueling a fuel feed and propulsion system. The fuel system having a jet pump within the hydrogen fuel tank, at least one primary pump receiving fuel from the jet pump and pressurizing fuel to an outlet path and a first fuel recirculation path configured to selectively recirculate fuel to the hydrogen fuel tank. The first fuel recirculation path is fluidly connected to the outlet path. The first fuel recirculation path includes a heat exchanger positioned within the hydrogen fuel tank to cool fuel received from at least one of the fuel feed system or a tank pressurization system. The heat exchanger and a Joule-Thomson expansion at the jet pump minimizes recirculated fuel temperature, which in combination with a selective flow recirculation rate improve the life of the primary pump downstream.