Sample tube structure for automotive fuel tank leak detection
    41.
    发明授权
    Sample tube structure for automotive fuel tank leak detection 有权
    用于汽车油箱泄漏检测的样品管结构

    公开(公告)号:US08746215B2

    公开(公告)日:2014-06-10

    申请号:US13310295

    申请日:2011-12-02

    IPC分类号: F02M33/02 F02M33/04

    摘要: A vapor management system (10) includes a sense tube (47) disposed in a fuel tank (12). A differential pressure sensor (17) has one side connected to the sense tube and another side connected to a vapor cavity so that the pressure sensor can measure a differential pressure (DP) between a volume of the vapor cavity and a volume of the sense tube containing liquid fuel. A temperature sensor (26) is in the vapor cavity. A processor 1) receives DP and T measurements at certain time intervals to determine the temperature at time zero (T0), the differential pressure at time zero (DP0), the temperature at a certain time (Tt), and the differential pressure at a certain time (DPt), and 2) when (Tt−T0) is greater than a certain value, compares DPt to a certain differential pressure value.

    摘要翻译: 蒸汽管理系统(10)包括设置在燃料箱(12)中的检测管(47)。 差压传感器(17)的一侧连接到感测管,另一侧连接到蒸汽空腔,使得压力传感器可以测量蒸气腔的体积和感测管的体积之间的压差(DP) 含液体燃料。 温度传感器(26)位于蒸气腔中。 处理器1)以特定的时间间隔接收DP和T测量,以确定零点(T0),时间零点(DP0),某一时间(Tt)的温度以及某一时刻的压差 特定时间(DPt),和2)当(Tt-T0)大于某一值时,将DPt与某个压差值进行比较。

    Leak detection method and system for a high pressure automotive fuel tank
    42.
    发明授权
    Leak detection method and system for a high pressure automotive fuel tank 有权
    高压汽车油箱泄漏检测方法及系统

    公开(公告)号:US08689613B2

    公开(公告)日:2014-04-08

    申请号:US13246923

    申请日:2011-09-28

    申请人: Paul D. Perry

    发明人: Paul D. Perry

    CPC分类号: F02M25/0809

    摘要: A vapor management system (10) includes a fuel tank (12), a canister (14), a pressure control valve (16) between the tank and canister and defining a high pressure side (34) and a low pressure side (32), a vacuum source (18), a purge valve (19) between the canister and vacuum source, a leak detection valve (20) connected with the canister and including a processor (30). A pressure sensor (24) and a temperature sensor (26) are disposed in a fuel vapor cavity of the fuel tank, with signals from the sensors being received by the processor. Based on an absolute temperature measured by the temperature sensor, the processor compares a predicted pressure in the fuel tank to the measured absolute pressure, and identifies a leak on the high pressure side if the predicted pressure is outside a tolerance range, while maintaining pressure in the fuel tank.

    摘要翻译: 蒸汽管理系统(10)包括燃料箱(12),罐(14),罐和罐之间的压力控制阀(16),并且限定高压侧(34)和低压侧(32) ,真空源(18),在所述罐和真空源之间的净化阀(19),与所述罐连接并包括处理器(30)的泄漏检测阀(20)。 压力传感器(24)和温度传感器(26)设置在燃料箱的燃料蒸气腔中,来自传感器的信号由处理器接收。 基于由温度传感器测量的绝对温度,处理器将燃料箱中的预测压力与测量的绝对压力进行比较,并且如果预测压力在公差范围之外,则识别高压侧的泄漏,同时保持压力 燃油箱。

    SAMPLE TUBE STRUCTURE FOR AUTOMOTIVE FUEL TANK LEAK DETECTION
    43.
    发明申请
    SAMPLE TUBE STRUCTURE FOR AUTOMOTIVE FUEL TANK LEAK DETECTION 有权
    汽车燃油箱泄漏检测样品管结构

    公开(公告)号:US20130139792A1

    公开(公告)日:2013-06-06

    申请号:US13310295

    申请日:2011-12-02

    IPC分类号: F02M33/08

    摘要: A vapor management system (10) includes a sense tube (47) disposed in a fuel tank (12). A differential pressure sensor (17) has one side connected to the sense tube and another side connected to a vapor cavity so that the pressure sensor can measure a differential pressure (DP) between a volume of the vapor cavity and a volume of the sense tube containing liquid fuel. A temperature sensor (26) is in the vapor cavity. A processor 1) receives DP and T measurements at certain time intervals to determine the temperature at time zero (T0), the differential pressure at time zero (DP0), the temperature at a certain time (Tt), and the differential pressure at a certain time (DPt), and 2) when (Tt-T0) is greater than a certain value, compares DPt to a certain differential pressure value.

    摘要翻译: 蒸汽管理系统(10)包括设置在燃料箱(12)中的检测管(47)。 差压传感器(17)的一侧连接到感测管,另一侧连接到蒸汽空腔,使得压力传感器可以测量蒸气腔的体积和感测管的体积之间的压差(DP) 含液体燃料。 温度传感器(26)位于蒸气腔中。 处理器1)以特定的时间间隔接收DP和T测量,以确定零点(T0),时间零点(DP0),某一时间(Tt)的温度以及某一时刻的压差 特定时间(DPt),和2)当(Tt-T0)大于某一值时,将DPt与某个压差值进行比较。

    Automotive vapor purge valve using shape memory alloy wire
    44.
    发明授权
    Automotive vapor purge valve using shape memory alloy wire 失效
    汽车蒸汽吹扫阀采用形状记忆合金线

    公开(公告)号:US07089919B2

    公开(公告)日:2006-08-15

    申请号:US11181325

    申请日:2005-07-14

    IPC分类号: F02M37/04 F02M37/00

    摘要: A purge valve is provided for a vehicle. The purge valve 10 includes a body 12 to be coupled to an intake manifold 40 of the vehicle and to a canister 33. The body has an orifice 20 for communicating vapor from the canister 33 with airflow in the intake manifold 40. A valve 18 is movable between a first position closing the orifice 20 and a second position opening the orifice. A shape memory alloy (SMA) structure 31 is associated with the valve such that when electric current is provided to the SMA structure 31 to heat the SMA structure above a transformation temperature thereof, the SMA structure transforms from an original shape to a second shape, thereby causing the valve 18 to move from the first position to the second position, and when the current is removed from the SMA structure, the SMA structure returns to the original shape, thereby permitting the valve 18 to return to the first position.

    摘要翻译: 为车辆提供清洗阀。 吹扫阀10包括要联接到车辆的进气歧管40和罐33的主体12。 主体具有用于将来自罐33的蒸气与进气歧管40中的气流相通的孔口20。 阀18可在关闭孔口20的第一位置和打开孔口的第二位置之间移动。 形状记忆合金(SMA)结构31与阀相关联,使得当SMA结构31提供电流以将SMA结构加热到高于其相变温度时,SMA结构从原始形状转变为第二形状, 从而使阀18从第一位置移动到第二位置,并且当电流从SMA结构移除时,SMA结构返回到原始形状,从而允许阀18返回到第一位置。

    Fluid flow through an integrated pressure management apparatus
    46.
    发明授权
    Fluid flow through an integrated pressure management apparatus 失效
    流体流经一体式压力管理装置

    公开(公告)号:US06840232B2

    公开(公告)日:2005-01-11

    申请号:US10281262

    申请日:2002-10-28

    申请人: Paul D. Perry

    发明人: Paul D. Perry

    IPC分类号: F02M25/08 F02M33/02

    摘要: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

    摘要翻译: 集成的压力管理系统管理压力并检测燃料系统中的泄漏。 集成压力管理系统还对燃料箱中的顶部空间进行泄漏诊断,从顶部空间收集挥发性燃料蒸气的罐,净化阀以及所有相关联的软管和连接。

    Housing for integrated pressure management apparatus
    49.
    发明授权
    Housing for integrated pressure management apparatus 失效
    一体化压力管理机房

    公开(公告)号:US06453942B1

    公开(公告)日:2002-09-24

    申请号:US09566137

    申请日:2000-05-05

    申请人: Paul D. Perry

    发明人: Paul D. Perry

    IPC分类号: F02M3302

    摘要: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

    摘要翻译: 集成的压力管理系统管理压力并检测燃料系统中的泄漏。 集成压力管理系统还对燃料箱中的顶部空间进行泄漏诊断,从顶部空间收集挥发性燃料蒸气的罐,净化阀以及所有相关联的软管和连接。

    Automotive evaporative leak detection system
    50.
    发明授权
    Automotive evaporative leak detection system 失效
    汽车蒸发泄漏检测系统

    公开(公告)号:US06343505B1

    公开(公告)日:2002-02-05

    申请号:US09275250

    申请日:1999-03-24

    IPC分类号: F02M3704

    CPC分类号: F02M25/0809 F02M25/0836

    摘要: A leak detection monitor (22; 222) for an on-board evaporative emission leak detection system that detects leakage from an evaporative emission space of a fuel system of an automotive vehicle. One embodiment (22) utilizes engine intake system vacuum to vent the evaporative emission space to atmosphere when the engine is running; another (222), an electromagnet actuator (270, 280). Venting ceases when the engine is shut off. Changes in vapor pressure in the evaporative emission space are monitored over time by electric devices (74; 282) after the engine has been shut off to distinguish between a gross leak, a small leak smaller than a gross leak, and a leak that is at most smaller than a small leak.

    摘要翻译: 一种用于检测来自机动车辆的燃料系统的蒸发排放空间的泄漏的车载蒸发排放泄漏检测系统的泄漏检测监视器(22; 222)。 一个实施例(22)利用发动机进气系统真空将发动机运行时的蒸发排放空间排放到大气中; 另一个(222),一个电磁铁致动器(270,280)。 发动机关闭时,排气停止。 在发动机关闭后,通过电气设备(74; 282)随着时间的推移监测蒸发排放空间中的蒸汽压力的变化,以区分总泄漏,小于总泄漏的小泄漏以及泄漏 最小的是小泄漏。