Method for controlling a pressure inside vehicular fuel tank system
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United States of America Patent
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Jan 2, 2018
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N/A
app pub date -
Oct 28, 2015
filing date -
Nov 27, 2014
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Abstract
A method for controlling a pressure inside a fuel tank system including a fuel tank and a controllable pressure relief valve. The method includes assessing whether a predetermined vapor expulsion risk is present, the predetermined vapor expulsion risk pertaining to a vapor expulsion from a main volume of the tank into a space accessible to an operator; if said risk is present, operating the pressure relief valve in accordance with a first pressure threshold, if the risk is not present, operating the pressure relief valve in accordance with a second pressure threshold which is higher than the first pressure threshold.
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