Patent ID: 6109299
Filing Date: 2000-08-29
Classification: B60K,F02M,F04F,Y10T

Abstract:
A chamber structure comprising:a chamber main body arranged on an inner bottom of a fuel tank of a vehicle, a suction port of a fuel pump being inserted into an inside of the chamber main body;a first through hole formed in a peripheral wall of the chamber main body;a negative pressure chamber connected to the first through hole;a second through hole for connecting an inside of the fuel tank and the negative pressure chamber, the second through hole being arranged in a vicinity of the inner bottom of the fuel tank;an inlet port for passing return fuel into the inside of the chamber main body via the first through hole; anda recirculation funnel formed to extend upward from the negative pressure chamber, the recirculation funnel having an upper end opening directed to the inside of the chamber main body and a lower end opening directed to the negative pressure chamber, the upper end opening being positioned lower than an upper edge of the chamber main body, and a peripheral edge of the upper end opening being formed longer than that of the lower edge opening.