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A REMOTE FUEL TANK DEPRESSURIZATION METHOD FOR PHEV VEHICLES

IP.com Disclosure Number: IPCOM000241445D
Publication Date: 2015-Apr-28
Document File: 1 page(s) / 217K

Publishing Venue

The IP.com Prior Art Database

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A REMOTE FUEL TANK DEPRESSURIZATION METHOD FOR PHEV VEHICLES

PHEV vehicles have sealed tanks to contain diurnal vapors. Tanks are sealed by an isolation valve FTIV. PHEV also have locked fuel doors that only unlock once the fuel tank is depressurized.A fueling event commences with pressing a refuel button on the dash. Once the fueling button is pressed and the vehicle is stationary, the FTIV is opened to depressurize the tank. Once the tank is depressurized to zero pressure, the fuel door is opened. If the tank would not become depressurized, the operator may get fuel mist spit back when attempting to refuel. A sensor in the fuel tank (FTPT) is used to measure the pressure inside the sealed fuel tank. Depressurization can take up to 15 seconds. Customers at times forget to press the refuel button inside the car. They exit the car, go inside gas station and then go to refuel only to realize they have not pressed the button. Customers must then get back inside the car and press the refuel request button in order to refuel.

Method

This new device implements a remote fuel tank depressurization functionality for PHEV. The remote key fob is used to allow depressurization of the fuel tank in order to facilitate refueling.The key fob typically has function buttons that include door lock/unlock, remote start, trunk/liftgate open, and a red panic button. This device adds another button for depressurizing the fuel tank in a PHEV. Upon pressing the remote fob for fuel tan...