DEVICE AND METHOD FOR DIAGNOSING EVAPORATED FUEL PROCESSING DEVICE
    64.
    发明申请
    DEVICE AND METHOD FOR DIAGNOSING EVAPORATED FUEL PROCESSING DEVICE 有权
    用于诊断蒸发燃料加工装置的装置和方法

    公开(公告)号:US20150040645A1

    公开(公告)日:2015-02-12

    申请号:US14380778

    申请日:2013-03-05

    IPC分类号: G01M3/04 G01M3/28 G01M3/02

    摘要: An evaporated fuel processing apparatus includes a valve between a canister and a fuel tank, and adsorbs evaporated fuel by the canister during fuel filling, and introduces into an intake air line of an internal combustion engine and processes the evaporated fuel while the internal combustion engine is operating. A diagnostic apparatus includes: a pump for pressurizing a system including the fuel tank and the canister; and a pressure sensor for sensing an internal pressure of the system. The diagnostic apparatus diagnoses whether or not leakage is present, based on a change in the internal pressure of the system from a pressurized state, wherein the pressurized state is a state pressurized to a predetermined pressure for diagnosis that is higher than a tank pressure at start of diagnosis; and maintains the fuel tank in the pressurized state by closing the valve after termination of the diagnosis.

    摘要翻译: 蒸发燃料处理装置包括罐和燃料箱之间的阀,并且在燃料填充期间由罐吸收蒸发的燃料,并且引入内燃机的进气管线并处理蒸发的燃料,同时内燃机是 操作。 诊断装置包括:用于对包括燃料箱和罐的系统加压的泵; 以及用于感测系统的内部压力的压力传感器。 诊断装置基于来自加压状态的系统的内部压力的变化来诊断是否存在泄漏,其中加压状态是被加压到用于诊断的预定压力高于开始时的罐压力的状态 的诊断; 并通过在诊断结束后关闭阀门来将燃料箱保持在加压状态。

    Electronic device for measuring leaktightness
    68.
    发明授权
    Electronic device for measuring leaktightness 有权
    用于测量密封性的电子设备

    公开(公告)号:US08306785B2

    公开(公告)日:2012-11-06

    申请号:US12530297

    申请日:2008-03-05

    IPC分类号: G06F19/00

    CPC分类号: G01M3/186 G01M3/3236

    摘要: To solve a leakage problem in a box, it is proposed to provide the box with an electronic circuit for measurement of its specific humidity. It is shown that by comparing this current specific humidity to an initial specific humidity and by evaluating the difference found in relation thereto, one has a reliable tool for measuring the permanence of tightness.

    摘要翻译: 为了解决盒子中的泄漏问题,提出了一种用于测量其湿度的电子电路箱。 通过比较该当前的比湿度和初始比湿度,并通过评估与此有关的差异,可以得到一种用于测量紧度持久性的可靠工具。