Vehicle fuel system and vehicle fuel system malfunction detection method
AssigneeSubaru Corporation
InventorsAkihiro TAKEMURA, Kazuya OKAZAKI
Life of this patent
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Abstract
A vehicle fuel system according to the invention includes a fuel filler flap that blocks an opening of a fuel filler space to be openable and closable, a locking mechanism that regulates opening and closing operation of the fuel filler flap, and a detector that detects the opening and closing operation of the fuel filler flap. A controller is able to determine an operational state of the fuel filler flap multiple times within one driving cycle of a vehicle, which improves a frequency of diagnosing the operational state of the fuel filler flap and a stuck-closed state of the detector.
Claims10
A vehicle fuel system comprising:
- a fuel filler port through which fuel is to be supplied to a fuel tank of a vehicle;
- a fuel filler space of a vehicle body of the vehicle, the fuel filler port being disposed in the fuel filler space;
- a fuel filler flap configured to block an opening of the fuel filler space to be openable and closable;
- a locking mechanism configured to regulate opening and closing operation of the fuel filler flap with respect to the opening;
- and
- a detector configured to detect an open or closed state of the fuel filler flap, wherein
- the locking mechanism includes
- a lock that is provided on the vehicle body and configured to operate in the fuel filler space, and
- a lock receiver that is provided on the fuel filler flap on the fuel filler space side and configured to be locked by the lock, and
- the detector detects at least
- a first detection value indicating that the lock receiver is locked by the lock and the fuel filler flap is in a full-closed state with respect to the opening, and
- a second detection value indicating that the lock receiver is locked by the lock and the fuel filler flap is in a semi-open state with respect to the opening.
A vehicle fuel system malfunction detection method for a vehicle fuel system including a controller configured to determine at least an operational state of a fuel filler flap or a stuck-closed state of a detector, the detector being configured to detect opening and closing operation of the fuel filler flap, the vehicle fuel system malfunction detection method comprising
- determining, by the controller, at least the operational state of the fuel filler flap or the stuck-closed state of the detector, based on an operation detection result of a lock inputted from a locking mechanism and an opening and closing detection result of the fuel filler flap inputted from the detector, the locking mechanism including the lock configured to regulate the opening and closing operation of the fuel filler flap.
Dependencies are inferred from the claim text.