A fuel tank including a built-in component is provided. The built-in component includes: a carrier part being a rigid body including a plurality of engaging parts, and a plurality of struts each including an engageable part to be engaged with one of the engaging parts. The engageable part of the strut includes an upper contact surface and a lower contact surface, which are formed spaced apart from each other in a height direction. The engaging parts of the carrier part each includes a biasing part that, when the strut is engaged with the engaging part, enters a space between the upper contact surface and the lower contact surface and generates biasing forces in directions to move the upper contact surface and the lower contact surface away from each other.

A pump module is disposed on a bottom portion of a fuel tank in the fuel tank. The pump module includes a suck-up unit for sucking up a fuel and a plurality of engaged portions. A bracket includes a base portion, a plurality of engaging portions, and a flow path. The base portion is a frame member fixed to the bottom portion and surrounding the pump module in a state where a lower end portion is in contact with the bottom portion. The engaging portions protrude from the base portion toward an upper side of the fuel tank and are respectively engaged with the engaged portions of the pump module. The flow path is disposed in the base portion and allows an inside of a frame of the base portion and an outside of the frame of the base portion to communicate with each other.

Systems and methods for installing and sealing a fuel pump in a fuel tank are disclosed. In one embodiment, a system for installing and sealing a fuel pump in a fuel tank may include (1) a fuel tank with an opening in a surface thereof; and (2) a fuel pump hanger assembly, the fuel pump hanger assembly comprising; (a) a plurality of assembly screws; (b) a plurality of clamping lugs configured to thread onto the plurality of assembly screws and engage an inside surface of the fuel tank; (c) a top plate further comprising; (i) a bearing surface configured to engage an external fuel tank surface; (ii) a plurality of through holes proximate the perimeter of the top plate and perpendicular to the bearing surface; (iii) a plurality of bosses, each of the plurality of bosses adjacent to each through hole, configured to guide and position the each clamping lug; and (d) a gasket positioned between the top plate and the fuel tank.

A valve case mounting structure includes a mount base and a valve case. The mount base includes a valve case support portion and a retainer piece having a first engagement opening and a second engagement opening. The valve case includes an engaging projection portion, and a holder portion. When the engaging projection portion is positioned at a front end side of the first engagement opening, the retainer piece does not reach the holder portion. When the engaging projection portion is moved from the front end side of the first engagement opening toward the second engagement opening, a front end portion of the retainer piece is inserted into the holding space before becoming unable to be inserted into the holder portion.

A supporting assembly for a hollow tank body includes a supporting body (2) and supporting ends (1) provided at two ends of the supporting body. The supporting ends are provided with stepped transition assemblies (4) connected to the supporting body. The supporting body is configured with a hollow structure. The supporting body includes a supporting main body (5) and a base (6). The supporting main body is configured with a cylindrical structure or a cylindrical structure with a corrugated structure in the middle. With this structure, the deformation of the hollow tank body under the relatively high overpressure and the low negative pressure can be avoided, and the shape stability of the whole product can be enhanced. Meanwhile, the supporting structure needs less material, and has a light weight and lowered cost.

A pump unit includes an insertion guide member that extends in a longitudinal direction of the pump unit and is used to guide the pump unit at a time of inserting the pump unit into an opening portion of a fuel tank. The insertion guide member includes a stopper portion and a guide portion that are arranged along an edge part of the insertion guide member. When the pump unit is projected in the longitudinal direction onto a plane of projection, the stopper portion protrudes outward from an imaginary circle, which has a fitting portion's diameter, on the plane of projection. The guide portion guides the pump unit in a rotational direction relative to a stay. A cross section of the pump unit taken along a guide portion orthogonal plane is set to be within the imaginary circle, which has the fitting portion's diameter.

The invention relates to a filler tube for a fuel tank, having a tube portion made of plastic material and a tubular adapter, which is connected to the tube portion, for coupling the filler tube to the fuel tank, wherein a lateral surface of the adapter is integrally bonded, in particular welded, to a lateral surface of the tube portion, wherein the adapter and the tube portion overlap in the region of the integrally bonded connection.

A vehicle fuel pump assembly includes a fuel pump received in a tank opening, an annular pump mounting ring securing the pump to the tank at the opening, and a cover assembly including an annular cover ring and a cover. The cover ring is removably attached onto the underlying pump mounting ring and the cover is removably attached onto the cover ring to overly at least part of the fuel pump. The cover system can include a flexible attachment element on the cover ring engaging a peripheral notch in the pump mounting ring and clip elements securing the cover to the cover ring. The cover can include a hinge to provide pivoting of the cover or a portion of the cover with respect to the cover ring.

A pressure relief assembly includes a plurality of valve components and a cap configured to house the valve components. The cap includes a ring having a retaining portion. The pressure relief assembly includes a sensor apparatus coupled to the cap via the ring. The sensor apparatus is configured to sense whether a predetermined pressure threshold is reached. The valve components operate to relieve pressure when the predetermined pressure threshold is reached. The sensor apparatus includes a retaining portion engaging the retaining portion of the ring. A valve assembly includes a first valve apparatus and the pressure relief assembly configured to bypass the first valve apparatus. The valve assembly includes a main housing that surrounds the first valve apparatus and the pressure relief assembly. The main housing defines an aperture in which the cap of the pressure relief assembly is at least partially disposed in the aperture.

A tank connection apparatus connects a tank filler pipe with a fuel tank in a fuel filling line of a vehicle, and it includes: a coupling body containing the mechanism components on its own body and providing connection between a corrugated connection pipe and the tank connector female housing, a corrugated connection pipe mounted between the tank filler pipe and the coupling body, and preventing cracking and/or breaking by extending in situations like accidents, a tank connector female housing mounted to the fuel tank inlet, a locking spring found on the coupling body and fixing the coupling body in the tank connector female housing when the coupling body is attached to the tank connector female housing. The tank connection apparatus also has a safety lock attached to the coupling body and fixing the locking spring with regard to the axis of rotation, and thus preventing it from coming loose.