An exemplary fuel tank assembly consists of the fuel-tank, a baffle plate, and a bracket that mounts the baffle plate to the upper interior wall of the fuel tank. The baffle plate has an upper plate with a penetration hole in its edge and an integral side wall. A bracket holds the fuel tank and the baffle plate in place. The baffle plate and the fuel tank are then mounted to each other using the bracket.
A bracket 40 is also provided in the fuel tank assembly to make a predetermined distance between the fuel tank 20 and baffle plate 30. This bracket is tapered and may be made of any suitable material. A bracket 40 may be integral fuel tank assembly with the baffle plate or may be a separate component that connects the two. In one embodiment, the baffle plate is formed as a separate component of the fuel tank assembly. The bracket is typically formed with a flange that extends through the upper plate of the fuel tank and connects to the baffle plate via a bolt.
The baffle plate 30 may have a partition 36 that can be fixedly mounted to the upper part 22 of the fuel tank 20. The partition is designed to suppress fuel surge. Another alternative is to form a partition under the baffle plate 30 to minimize fuel surge. This partition reduces the number of elements in the fuel tank assembly, which reduces the overall manufacturing cost. In this way, the baffle plate 30 is more rigid than the conventional baffle plate.
The baffle plate 30 may be made of a synthetic resin that has a plurality of holes that allow the passage of fuel. The baffle plate 30 may have an exterior shape that corresponds to the shape of fuel tank 20. The bottom surface of the baffle plate may be downward facing and include pressure-controlling holes in the side wall 33. In some embodiments, the baffle plate may also be made of an aluminum alloy.