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    Method and system for fuel vapor control
    3.
    发明授权
    Method and system for fuel vapor control 有权
    燃油蒸气控制方法与系统

    公开(公告)号：US09026345B2

    公开(公告)日：2015-05-05

    申请号：US13612359

    申请日：2012-09-12

    申请人： Aed M. Dudar ,  Robert Roy Jentz ,  Scott A. Bohr ,  Niels Christopher Kragh

    发明人： Aed M. Dudar ,  Robert Roy Jentz ,  Scott A. Bohr ,  Niels Christopher Kragh

    IPC分类号： F02M25/08

    CPC分类号： F02M25/0818

    摘要： Methods and systems are provided for performing a vehicle-off fuel system leak test. A vehicle controller may be woken up after a vehicle has been in a key-off condition for a sufficient amount of time to monitor a fuel tank for pressure and temperature stabilization. If the pressure and temperature of the fuel tank is stable, a fuel pump may be operated to raise a fuel tank vapor pressure, and fuel system leaks are identified based on a rate of pressure decay from the fuel tank.

    摘要翻译： 提供了用于执行停车燃料系统泄漏测试的方法和系统。 在车辆处于关闭状态足够的时间之后，车辆控制器可以被唤醒以监视燃料箱的压力和温度稳定性。 如果燃料箱的压力和温度是稳定的，则可以操作燃料泵以提高燃料箱的蒸汽压力，并且基于从燃料箱的压力衰减速率来识别燃料系统泄漏。

    METHOD AND SYSTEM FOR FUEL VAPOR CONTROL
    4.
    发明申请
    METHOD AND SYSTEM FOR FUEL VAPOR CONTROL 有权
    燃料蒸汽控制方法与系统

    公开(公告)号：US20140074385A1

    公开(公告)日：2014-03-13

    申请号：US13612359

    申请日：2012-09-12

    申请人： Aed M. Dudar ,  Robert Roy Jentz ,  Scott A. Bohr ,  Niels Christopher Kragh

    发明人： Aed M. Dudar ,  Robert Roy Jentz ,  Scott A. Bohr ,  Niels Christopher Kragh

    IPC分类号： G01M3/04 ,  F02D28/00

    CPC分类号： F02M25/0818

    摘要： Methods and systems are provided for performing a vehicle-off fuel system leak test. A vehicle controller may be woken up after a vehicle has been in a key-off condition for a sufficient amount of time to monitor a fuel tank for pressure and temperature stabilization. If the pressure and temperature of the fuel tank is stable, a fuel pump may be operated to raise a fuel tank vapor pressure, and fuel system leaks are identified based on a rate of pressure decay from the fuel tank.

    摘要翻译： 提供了用于执行停车燃料系统泄漏测试的方法和系统。 在车辆处于关闭状态足够的时间之后，车辆控制器可以被唤醒以监视燃料箱的压力和温度稳定性。 如果燃料箱的压力和温度是稳定的，则可以操作燃料泵以提高燃料箱的蒸汽压力，并且基于从燃料箱的压力衰减速率来识别燃料系统泄漏。

    METHODS AND SYSTEMS FOR FUEL VAPOR CONTROL
    5.
    发明申请
    METHODS AND SYSTEMS FOR FUEL VAPOR CONTROL 有权
    燃料蒸汽控制的方法和系统

    公开(公告)号：US20130206115A1

    公开(公告)日：2013-08-15

    申请号：US13371218

    申请日：2012-02-10

    申请人： Niels Christopher Kragh

    发明人： Niels Christopher Kragh

    IPC分类号： F02M33/02

    CPC分类号： F02M31/20 ,  F02M2025/0863 ,  Y02T10/126

    摘要： Various methods and systems are provided for reducing pressure in a fuel tank of a fuel system of an engine. In one example, cooling fluid is routed from an air conditioner of a cooling system to a vapor cooler disposed in a vapor space of the fuel tank such that fuel vapor in the fuel tank may be condensed and routed to a fuel pump for delivery to the engine, thereby reducing a fuel tank pressure.

    摘要翻译： 提供了用于减少发动机的燃料系统的燃料箱中的压力的​​各种方法和系统。 在一个示例中，冷却流体从冷却系统的空调被布置到设置在燃料箱的蒸汽空间中的蒸气冷却器，使得燃料箱中的燃料蒸气可以冷凝并被路由到燃料泵以输送到 发动机，从而减少油箱压力。

    CANISTER PURGE CONTROL VALVE CONTROL SYSTEMS
    6.
    发明申请
    CANISTER PURGE CONTROL VALVE CONTROL SYSTEMS 审中-公开
    CANISTER泵控制阀控制系统

    公开(公告)号：US20110017178A1

    公开(公告)日：2011-01-27

    申请号：US12506283

    申请日：2009-07-21

    申请人： William Keith McDonald ,  Keith Scott Koller ,  Eric A. Macke ,  Kevin Plymale ,  Niels Christopher Kragh ,  Scott Bohr ,  Eric David Bramson ,  Dennis Harrigan

    发明人： William Keith McDonald ,  Keith Scott Koller ,  Eric A. Macke ,  Kevin Plymale ,  Niels Christopher Kragh ,  Scott Bohr ,  Eric David Bramson ,  Dennis Harrigan

    IPC分类号： F02M33/02 ,  F16K31/02

    CPC分类号： F02M33/08 ,  F02D41/003 ,  F02D41/20 ,  F02D2041/2027 ,  F02M25/0836

    摘要： A purge control valve control system is provided for an internal combustion engine system, comprising: a voltage source having a positive potential and a negative potential; a purge control valve having a solenoid, such solenoid comprising an electrically inductive element, such inductive element having a first terminal coupled to the positive potential of the voltage source; a diode having an anode and a cathode. The control unit includes a transistor having: a control electrode fed by a train of pulses; a first electrode coupled to the negative potential of the voltage source; and a second electrode coupled to a second terminal of the inductive element and to the diode. A train of pulses fed to the control electrode is a pulse width modulated signal and switches the transistor between a conducting condition, wherein current passes between the first electrode and the second electrode, and a non-conducting condition, wherein current is prevented from passing between the first electrode and the second electrode. When the transistor is in the conducting condition current from the voltage source passes through the inductive element and through the first and second electrodes with a potential being produced across the diode to bias the diode to a non-conducting condition and wherein when the transistor switches into the non-conducting condition, energy stored in the inductor when current passes through the inductor during the conducting condition of the transistor, produces a voltage pulse to bias the diode to a conducting condition and such stored energy is dissipated in the inductor as such energy passes as current through the conducting biased diode to the voltage source.

    摘要翻译： 一种用于内燃机系统的清洗控制阀控制系统，包括：具有正电位和负电位的电压源; 具有螺线管的清洗控制阀，这种螺线管包括电感元件，该电感元件具有耦合到电压源的正电位的第一端子; 具有阳极和阴极的二极管。 所述控制单元包括晶体管，所述晶体管具有：由一串脉冲馈送的控制电极; 耦合到电压源的负电位的第一电极; 以及耦合到所述电感元件的第二端子和所述二极管的第二电极。 馈送到控制电极的脉冲串是脉宽调制信号，并且在导体条件之间切换晶体管，其中电流在第一电极和第二电极之间通过，导通条件和不导通条件，其中电流被阻止在 第一电极和第二电极。 当晶体管处于导通状态时，来自电压源的电流通过电感元件，并通过第一和第二电极，在二极管两端产生电位，将二极管偏压到非导通状态，并且当晶体管切换到 非导通条件，当电流在晶体管的导通条件期间通过电感器时，存储在电感器中的能量产生电压脉冲以将二极管偏压到导通条件，并且这种存储的能量在电感器中消散，因为这些能量通过 作为电流通过导通偏压二极管到电压源。