Abstract: A vaporized fuel processing apparatus for a vehicle having a fuel tank has a casing filled with an adsorbent and having a first outer surface. The casing has first ribs protruding from the first outer surface and extending without intersecting with each other. The casing has at least one second rib protruding from the first outer surface. At least one pair of the first ribs adjacent to each other are connected with each other via one of the second ribs only. The other pairs of the first ribs adjacent to each other are connected with each other via one of the second ribs only or are not connected with each other via any one of the second ribs.

Abstract: Impeller 21 is rotatably disposed within a pump housing that includes pump cover 5 and pump body 18. Inlet port 19, body groove 31, partition 33 and blocking wall 37 are formed in the pump body 18. The body groove 31 defines a first pump channel 35, and the blocking wall 37 defines a enlarged channel portion 38. Outlet port 20, cover groove 32 and partition 34 are formed in the pump cover 5. The cover groove 32 defines a second pump channel 36. Distance {circle around (1)} between a terminal end of the first pump channel 35 and a terminal end of the outlet port 20, distance {circle around (2)} between a starting end of the enlarged channel portion 38 and a starting end of the second pump channel 36, length {circle around (3)} of the partition 34 and length {circle around (4)} of the partition 33 each are chosen to be optimum values such that the amount of fluid that is discharged through the outlet port 20 and the amount of fluid that flows in though the inlet port 19 increase.