Patent ID: 9284923
Filing Date: 2016-03-15
CPC Classification: F02M

Claim Text:
1. A fuel vapor recovery apparatus to be mounted on a vehicle having an internal combustion engine and a fuel tank, the fuel vapor recovery apparatus comprising: a pressure detector configured to detect an inner pressure of the fuel tank; an adsorbent canister capable of adsorbing and desorbing fuel vapor vaporized in the fuel tank; a vapor path providing communication between the fuel tank and the adsorbent canister; a purge path providing communication between the adsorbent canister and an intake path of the internal combustion engine; a purge valve configured to open and close the purge path; a blocking valve configured to open and close the vapor path and having a valve body; and a regulator for controlling the purge valve and the blocking valve, wherein the regulator is configured to receive a pressure reading from the pressure detector; wherein the fuel tank is sealed when the blocking valve is closed; wherein the fuel tank is configured to be depressurized by opening the blocking valve; wherein the blocking valve comprises a motor valve that has a driving motor and wherein the regulator is configured to adjust an opening amount of the blocking valve by controlling the driving motor to adjust a stroke of the valve body; and wherein the regulator is configured to store a position of the valve body when an initial decrease in the inner pressure of the fuel tank is detected by the pressure detector as a valve opening start position each time the internal combustion engine is started and to base subsequent adjustment of the opening amount of the blocking valve on the valve opening start position.