Ford Global Technolgoies, LLC

Roman Schesnuk

Aed M Dudar

Robert Roy Jentz

Dennis Seung-Man Yang

Mark W Peters

Russell Randall Pearce

Bryan Michael Bolger

Michael Paul Lindlbauer

Herbert Thomas Meissner

Ann Irene DeZelia

Jack Marshall

Vishal Thakkar

Methods and systems are provided for an adaptor for a capless filler pipe of a fuel tank for leak detection testing of a vehicle. In one example, the system may include a threaded hollow shaft having a top end able to receive a nozzle of a leak detection machine, the hollow shaft inserted through a mouth of a filler pipe of a fuel tank, a gasket arranged on the hollow shaft, and an end cylinder having an elastic piece on the hollow shaft configured to create an airtight seal with the fuel mouth. In this way, the adaptor may restrict gas flow through a defined flow path through the adaptor, and not through any other flow paths during leak detection testing.

Adaptor for a capless fuel tank filler pipe

Systems are provided for a fuel system comprising an external refueling request switch accessible at or near a refueling door, thus enabling methods that may include initiating depressurization of a fuel tank responsive to an operator engaging the refueling request switch. The status of depressurization may be communicated to the operator via on one or more LED displays located either inside the refueling assembly or located at the refueling door. In this way, refueling requests may be initiated by a refueling operator, and by relaying the status of depressurization to the operator, any confusion on the part of the operator may be avoided.

Systems and methods for an externally accessible refueling request switch

A method for verifying the reliable operation of a fuel tank pressure transducer positioned within a fuel tank of a PHEV. The method detects the initiation of a refueling cycle, which leads to opening a system vent valve positioned between a carbon canister and a system vent, and opening a fuel tank isolation valve. A controller monitors fuel system pressure within the fuel tank and at the vent valve, and that device determines rates of change of the fuel system pressure within the fuel tank and at the outlet vent. Reliable operation of the fuel tank pressure transducer is indicated upon a determination that the rates of change of the fuel system pressure in the fuel tank and at the outlet vent are uniform within a predetermined range.

Fuel tank pressure sensor rationality test for a PHEV

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Chesterfield, MI, United States of America

Roman Schesnuk