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    Fuel system with integrated pressure management
    5.
    发明申请
    Fuel system with integrated pressure management 有权
    具有综合压力管理的燃油系统

    公开(公告)号：US20020096152A1

    公开(公告)日：2002-07-25

    申请号：US10102977

    申请日：2002-03-22

    申请人： Siemens Canada Limited

    发明人： Paul D. Perry ,  John E. Cook

    IPC分类号： F02M033/02

    CPC分类号： F02M25/0809 ,  F02M25/0836 ,  F02M25/0854 ,  F02M2025/0845 ,  Y10T137/7771 ,  Y10T137/7782

    摘要： A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the 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： 一种向车辆的内燃机供给燃料的燃料系统。 燃料系统包括管理压力并检测燃料系统中的泄漏的集成压力管理系统。 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。

    Initialization method for an automotive evaporative emission leak detection system
    6.
    发明申请
    Initialization method for an automotive evaporative emission leak detection system 有权

    公开(公告)号：US20030079533A1

    公开(公告)日：2003-05-01

    申请号：US10315943

    申请日：2002-12-11

    申请人： Siemens Canada Limited

    发明人： John Cook ,  Craig A. Weldon ,  Paul D. Perry ,  Raymond Rasokas

    IPC分类号： G01P005/00

    CPC分类号： F02M25/0818 ,  F02M25/0809 ,  F02M25/0836 ,  F02M2025/0845

    摘要： An on-board evaporative emission leak detection system and method that detects leakage from an evaporative emission space of a fuel system of an automotive vehicle. A test includes an initialization, or stabilization, phase during which a differential between pressure in the evaporative emission space and atmospheric pressure is created, and then varied, over time, within a range of differential pressures suitable for performing a leak detection test. This varying of pressure differential alternately increases the created pressure differential above a nominal pressure differential and decreases the created pressure differential below the nominal pressure differential. The leak detection test is then performed.

    Integrated pressure management system for a fuel system
    8.
    发明申请
    Integrated pressure management system for a fuel system 失效
    燃油系统综合压力管理系统

    公开(公告)号：US20020096149A1

    公开(公告)日：2002-07-25

    申请号：US10102786

    申请日：2002-03-22

    申请人： Siemens Canada Limited

    发明人： Paul D. Perry ,  John E. Cook

    IPC分类号： F02M033/02

    CPC分类号： F02M25/0809 ,  F02M25/0836 ,  F02M25/0854 ,  Y10T137/7771 ,  Y10T137/7782

    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 head space in a fuel tank, a canister that collects volatile fuel vapors from the head space, a purge valve, and all associated.

    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。

    Automotive evaporative leak detection system
    9.
    发明申请
    Automotive evaporative leak detection system 有权

    公开(公告)号：US20020069692A1

    公开(公告)日：2002-06-13

    申请号：US10024285

    申请日：2001-12-21

    申请人： SIEMENS CANADA LIMITED

    发明人： John E. Cook ,  Paul D. Perry

    IPC分类号： G01M003/04

    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.

    Temperature correction method and subsystem for automotive evaporative leak detection systems
    10.
    发明申请
    Temperature correction method and subsystem for automotive evaporative leak detection systems 有权
    汽车蒸发泄漏检测系统的温度校正方法和子系统

    公开(公告)号：US20020078736A1

    公开(公告)日：2002-06-27

    申请号：US10024280

    申请日：2001-12-21

    申请人： SIEMENS CANADA LIMITED

    发明人： John E. Cook ,  Paul D. Perry

    IPC分类号： G01M003/08

    CPC分类号： F02M25/0818 ,  F02M25/0809

    摘要： A method and sensor or sensor subsystem permit improved evaporative leak detection in an automotive fuel system. The sensor or sensor subsystem computes temperature-compensated pressure values, thereby eliminating or reducing false positive or other adverse results triggered by temperature changes in the fuel tank. The temperature-compensated pressure measurement is then available for drawing an inference regarding the existence of a leak with reduced or eliminated false detection arising as a result of temperature fluctuations.

    摘要翻译： 一种方法和传感器或传感器子系统允许在汽车燃料系统中改进蒸发泄漏检测。 传感器或传感器子系统计算温度补偿压力值，从而消除或减少由燃料箱温度变化触发的假阳性或其他不利结果。 然后，温度补偿压力测量可用于绘制关于由于温度波动引起的减少或消除的错误检测的泄漏的存在的推断。