An in-tank fuel pump assembly and mounting system is disclosed which may be configured for mounting inside a fuel tank. The assembly includes a pump housing, pump mounted to the housing, and pressure relief valve. The housing may comprise upper and lower pump housing units coupled together. The upper housing unit is configured for mounting to a tank opening, which in one implementation may be the fuel fill opening. The lower housing unit extends into the tank to approximately the bottom of the tank. A fuel fill fluid pathway is created through the housing for adding fuel to the tank while the pump assembly remains in situ. The upper housing unit may include a removable fuel cap. The pump housing may include an integral vapor trap.

A system includes a body with a fluid passage therethrough, a first open end, and an opposite termination, a valve positioned within the body and including first and second ends, the valve moving between open and closed positions, the valve being biased into the closed position, and a seal positioned on the second end of the valve, the seal forming the closed position when the valve is biased towards the first open end of the body, and the seal engaging a shoulder formed by the body to retain the valve within the body. The seal is accessible from the termination of the body to allow the valve to be coupled to the body.

There is provided a fuel tank including: a fuel tank main body enclosed by a floor wall, side walls and an upper wall; and a separator including a strut, a first plate portion in which a first penetrating hole that penetrates in a plate thickness direction is formed, and a second plate portion in which a second penetrating hole that penetrates in a plate thickness direction is formed, the second plate portion sandwiching the strut with the first plate portion and extending in a diametric direction at an opposite side of the strut from a side thereof at which the first plate portion is disposed, wherein at least one of shapes, sizes or numbers of the first penetrating hole and the second penetrating hole is set to be different such that fluid resistances at the first plate portion and the second plate portion are different.

An in-tank fuel pump assembly and mounting system is disclosed which may be configured for mounting inside a fuel tank. The assembly includes a pump housing, pump mounted to the housing, and pressure relief valve. The housing may comprise upper and lower pump housing units coupled together. The upper housing unit is configured for mounting to a tank opening, which in one implementation may be the fuel fill opening. The lower housing unit extends into the tank to approximately the bottom of the tank. A fuel fill fluid pathway is created through the housing for adding fuel to the tank while the pump assembly remains in situ. The upper housing unit may include a removable fuel cap. The pump is capable of pressurizing the fuel to pressures suitable for use in fuel injection type engines. A resiliently deformable in-tank fuel filter may be coupled to the pump.

The present invention relates to a curve-combined square pressure tank with which curves are combined so as to maintain internal high pressure, improve space efficiency, and reduce the weight thereof, and to a pressure tank, in which planes and curves are combined, formed by connecting flat plate members and curved members, having a plurality of aligned tension members for connecting the flat plate members facing each other, and having stress buffer parts formed at connection parts of the flat plate members and the curved members so as to enable internal pressure to be maintained.

A fuel pump assembly includes an attachment section and a pump housing. The attachment section includes an upper telescoping section having an outer portion and a support rod that extends into the outer portion for telescoping movement with respect thereto. The support rod further extends downward from the outer portion. The pump housing is supported to a lower end of the support rod of the attachment section. The upper telescoping section of the support rod is configured such that the pump housing is movable between a first position and a second position, such that in the first position the pump housing is retained by the upper telescoping structure a first distance away from the attachment section and in the second position the pump housing is located a second distance away from the attachment section. The first distance is greater than the second distance.

A built-in support pillar for a fuel tank including: a support pillar main body that is configured to be disposed inside a box-shaped fuel tank, and that joins together mutually facing internal walls of the fuel tank; an engaging portion for positioning that is formed on an outer circumferential surface of the support pillar main body; and a bracket that is mounted on the support pillar main body, the bracket including an engaged portion configured to be engaged with the engaging portion, and a fixing portion to which a built-in component is fixed.

A coupling stay includes a support inner peripheral surface extending along a rotational axis and providing radial support to a rotatable shaft portion of a pump unit, which extends along the rotational axis. A support lateral surface extends in a longitudinal direction and provides thrust support to the pump unit. The support inner peripheral surface extends from the support lateral surface in the transverse direction. A lock claw projects from the coupling stay. A lock projection projects from the pump unit and is operable to lock rotation of the pump unit relative to the coupling stay about the rotational axis upon fitting of the lock projection between the support lateral surface and the lock claw. A height of a contact part of the lock projection, which contacts the support lateral surface, is limited to be equal to or lower than the rotational axis.

A fuel sender assembly having a housing, a first positioning mechanism, a second positioning mechanism and a sender unit. The first positioning mechanism contacts an outer surface of the housing and is movable in a first direction relative to the housing. The first positioning mechanism is further configured to retain the sender unit in any one of a plurality of positions relative to the outer surface of the housing. The second positioning mechanism includes a first part and a second part. The first part is attached to the first positioning mechanism. The second part is coupled to the first part such that the second part is movably positionable relative to the first part in a second direction perpendicular to the first direction. The sender unit is connected to the second part.

A fuel-mixing prevention filler neck device is provided. The fuel-mixing prevention filler neck device includes a fuel dispensing gun insertion unit that receives a fuel dispensing thereinto and a coupling unit that provides fluid communication with a bottom of the fuel dispensing gun insertion unit. The coupling unit is disposed on an exterior circumferential surface thereof with coupling protrusions for fastening with a plurality of slots formed in a filler pipe. Further, a first side of a lower portion of the coupling unit is open to form a coupling region. A misfueling prevention unit slidably moves to the coupling region to be coupled to the coupling unit. Additionally, the misfueling prevention unit is closed when a gasoline fuel dispensing gun is inserted and being opened when a diesel fuel dispensing gun is inserted.