Fuel vapor recovery apparatus

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:
• move the valve body in a valve opening direction to purge the adsorbent canister when the inner pressure of the fuel tank is above a predetermined value;
• and
• store a position of the valve body as a valve opening start position when the pressure detector detects a decrease in the inner pressure of the fuel tank as the valve body moves in the valve opening direction.