METHOD AND SYSTEM FOR FUEL TANK CAP DETECTION

    公开(公告)号:US20230241963A1

    公开(公告)日:2023-08-03

    申请号:US18002763

    申请日:2021-06-24

    CPC classification number: B60K15/03519 B60S5/02 B60K2015/03566

    Abstract: A method may verify that a fuel tank cap is present and properly closed after refueling of a motor vehicle fuel tank. The method may include, in response to a request for refueling: (a1) enabling refueling of the motor vehicle fuel tank by opening a first vent valve connected in series in a vent line, downstream from a first port of a recirculation line coupled to the vent line, so that to vent the motor vehicle fuel tank to the atmosphere through a fuel vapor canister; (b1) disabling refueling of the motor vehicle fuel tank by closing the first vent valve; (c1) monitoring the internal pressure within the motor vehicle fuel tank when the refueling request is finished; and (d1) concluding that the fuel tank cap is deemed present and properly closed when the internal pressure increases and/or remains higher than the atmospheric pressure.

    LEAK DETECTION SYSTEM
    3.
    发明申请

    公开(公告)号:US20230008799A1

    公开(公告)日:2023-01-12

    申请号:US17780386

    申请日:2020-11-30

    Abstract: The invention relates to a leak detection system on board of a vehicle comprising a fuel tank (301, 401), a filler pipe (302, 402), a venting line (303, 403) for recirculating fuel vapors from the tank to the filler pipe, said system having a combination pressure and temperature sensor mounted in the vapor dome of the fuel tank, and a pressure sensor located in the recirculation line above the highest possible liquid level that could be present in the recirculation line and to methods to detect said leak.

    METHOD AND SYSTEM FOR CONTROLLING A FILLING OPERATION OF A VEHICULAR LIQUID STORAGE SYSTEM
    4.
    发明申请
    METHOD AND SYSTEM FOR CONTROLLING A FILLING OPERATION OF A VEHICULAR LIQUID STORAGE SYSTEM 有权
    一种用于控制液体储存系统的灌装操作的方法和系统

    公开(公告)号:US20160060093A1

    公开(公告)日:2016-03-03

    申请号:US14824472

    申请日:2015-08-12

    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.

    Abstract translation: 一种用于控制包括装备有填充管和截止阀的罐的车辆液体储存系统的填充操作的方法,所述方法包括检测再填充事件的开始; 当截止阀打开时,观察罐的测量填充水位是否达到预定的填充水平; 如果达到预定的填充水平,则执行以下步骤:关闭截止阀以引起填充喷嘴的关闭; 当满足第一压力标准时,打开截止阀; 并且当满足第二压力标准时,关闭截止阀。 第二压力标准包括将罐内的压力降低到预定压力水平以下。

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