Reservoir cup assembly of LPG fuel tank for vehicle

A reservoir cup assembly configured to be installed in a fuel storage space of a fuel tank of a vehicle, the reservoir cup assembly comprising:

• a cup body configured to be disposed at a bottom side of the fuel storage space of the fuel tank, the cup body defining a reservoir space configured to store a fuel;
• a fuel supply disposed at the reservoir space of the cup body and configured to cause the fuel to be introduced from the fuel storage space to the reservoir space, the fuel supply defining a supply passage at a bottom surface of the reservoir space of the cup body;
• and
• an auxiliary supply that is disposed at a lower side of the cup body and faces the fuel supply,
• wherein the fuel supply comprises a supply valve disposed at the supply passage and configured to control a flow of the fuel based on an inflow amount of the fuel to the reservoir space and a residual amount of the fuel in the reservoir space, and
• wherein the auxiliary supply defines:
• an auxiliary path that is surrounded by a circumferential surface of the auxiliary supply and connects between the supply passage and the bottom surface of the fuel storage space, and
• an inflow passage is defined at the circumference surface of the auxiliary supply and in fluid communication with the auxiliary path.