Apparatus for purging fuel evaporation gas in fuel system

An apparatus for purging fuel evaporation gas in a fuel system, comprising:

• a canister connected to a fuel tank through an inlet port provided in the canister to collect and store fuel evaporation gas transferred from the fuel tank;
• a first purge port provided in the canister and connected to an engine intake system, the first purge port allowing fuel evaporation gas collected in the canister to be transferred to the engine intake system by virtue of negative pressure, which is generated in the engine intake system during driving of an engine;
• and
• a second purge port provided in the canister and connected to a dual jet pump of a fuel pump module disposed in the fuel tank, the second purge port allowing the fuel evaporation gas collected in the canister to be transferred to the dual jet pump by negative pressure generated in the dual jet pump during driving of the engine,
• wherein the canister includes:
• a case filled with an adsorptive material capable of adsorbing fuel evaporation gas;
• a partition wall formed in the case to partition an internal space in the case into a first space and a second space;
• and
• an atmosphere port formed in a portion of the case to directly communicate with the second space and to allow air to be introduced thereinto,
• wherein the first purge port is formed in a portion of the case to directly communicate with the first space, and the second purge port is formed in a portion of the case to face the atmosphere port in a direction in which air flows in the second space;
• wherein the inlet port is formed in the case, and connected to the fuel tank to allow fuel evaporation gas to be introduced thereinto from the fuel tank,
• wherein the first purge port, the inlet port, and the atmosphere port are formed in a first wall part of the case, and
• wherein the second purge port is formed in a second wall part, which is positioned opposite the first wall part.