Patent ID: 7047952

Claim:
A canister comprising a tank port communicated with an upper air chamber in a fuel tank, a purge port communicated with an intake passage of an engine, an atmospheric port opened to atmosphere, and a main adsorbent chamber containing activated carbon for adsorbing evaporated fuel flowing from said tank port to said atmospheric port, wherein a partition plate is provided between said tank port and said purge port for preventing both ports from being directly communicated with each other, a first chamber is provided between said main adsorbent chamber and said tank port, a second chamber is provided between said main adsorbent chamber and said purge port, and a purge buffer plate is provided in said main adsorbent chamber on a side of said tank port/purge port, for communicating said first and second chambers with each other, and wherein said first chamber serves as an air chamber containing no activated carbon and said second chamber contains activated carbon.