Patent ID: 6470862
Filing Date: 2002-10-29
Classification: F02M

Abstract:
An evaporated fuel processing system for an engine having an intake passage, the system comprising:a fuel tank for holding fuel; a canister adapted to be charged with and purged of evaporated fuel; a charge passage for connecting the fuel tank and the canister; a charge control valve for opening and closing the charge passage connecting the fuel tank and the canister; a purge passage for connecting the canister and the intake passage of the engine; a purge control valve for opening and closing the purge passage connecting the canister and the intake passage of the engine; and an atmosphere release control valve for opening and closing an atmosphere communication hole of the canister; and a control means for detecting a leakage fault in the fuel tank or the charge passage upstream of the charge control valve; wherein when a leakage fault is detected the control means opens the charge control valve and the purge control valve and closes the atmosphere release control valve.