METHOD AND SYSTEM FOR CONTROLLING A FILLING OPERATION OF A VEHICULAR LIQUID STORAGE SYSTEM
First Claim
1. A method for controlling a filling operation of a vehicular liquid storage system comprising a tank equipped with a filler pipe and a shut-off valve, the method comprising:
- detecting the start of a refilling event;
while the shut-off valve is open, observing whether a measured fill level of said tank has reached a predetermined fill level;
if said predetermined fill level has been reached, performing the following steps;
closing the shut-off valve to induce a shut-off of a filling nozzle;
when a first pressure criterion is met, opening the shut-off valve; and
when a second pressure criterion is met, closing the shut-off valve;
wherein the second pressure criterion comprises a decrease of pressure inside said tank below a predetermined pressure level.
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Accused Products
Abstract
A method for controlling a filling operation of a vehicular liquid storage system including a tank equipped with a filler pipe and a shut-off valve, the method including detecting the start of a refilling event; while the shut-off valve is open, observing whether a measured fill level of the tank has reached a predetermined fill level; if the predetermined fill level has been reached, performing the following steps: closing the shut-off valve to induce a shut-off of a filling nozzle; when a first pressure criterion is met, opening the shut-off valve; and when a second pressure criterion is met, closing the shut-off valve. The second pressure criterion includes a decrease of pressure inside the tank below a predetermined pressure level.
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Citations
8 Claims
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1. A method for controlling a filling operation of a vehicular liquid storage system comprising a tank equipped with a filler pipe and a shut-off valve, the method comprising:
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detecting the start of a refilling event; while the shut-off valve is open, observing whether a measured fill level of said tank has reached a predetermined fill level; if said predetermined fill level has been reached, performing the following steps; closing the shut-off valve to induce a shut-off of a filling nozzle; when a first pressure criterion is met, opening the shut-off valve; and when a second pressure criterion is met, closing the shut-off valve; wherein the second pressure criterion comprises a decrease of pressure inside said tank below a predetermined pressure level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification