| 摘要 |
<p>PURPOSE: A purge system for evaporation gas in a fuel tank is provided to satisfy HEV/PHEV without increasing the capacity of a canister by improving the efficiency of purge and the efficiency of collecting the evaporation gas. CONSTITUTION: A purge system for evaporation gas in a fuel tank comprises a vent line(30), an additional vent line(60), and a vapor control valve(40). The vent line is installed in a fuel tank, and collects hydrocarbon included in evaporation gas, and connected to a canister(4). The additional vent line is installed in the fuel tank, and connected to the canister and a ROV valve, which discharges the evaporation gas. The vapor control valve is installed in one side of the vent line, and closed by an ECU when purging an engine. One line of the vent line and additional vent line is connected to the other line, not directly connected to the canister.</p> |
