Patent ID: 6988391

Claim:
A fuel vapor leakage inspection apparatus comprising: a fuel tank; an adsorption container, wherein said adsorption container houses an adsorbent for adsorbing fuel vapor generated in the fuel tank; an exhaust device for stopping and starting communication between the adsorption container and an intake pipe, wherein the exhaust device is provided in an exhaust path for exhausting fuel vapor adsorbed by the adsorbent into the intake pipe by a negative pressure of the intake pipe; pressure means for pressurizing or depressurizing a fuel vapor path formed from the fuel tank through the adsorption container to the exhaust device while the exhaust device blocks communication between the adsorption container and the intake pipe; leakage detection means for detecting leakage from the fuel vapor path after the fuel vapor path is pressurized or depressurized by the pressure means; calculation means for calculating an amount of fuel vapor adsorbed; and control means for determining whether or not the pressure means is operated to execute a leakage inspection for the fuel vapor path in accordance with the amount of the fuel vapor calculated by the calculation means.