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    Vapor purge control in an engine with a hybrid valvetrain
    5.
    发明授权
    Vapor purge control in an engine with a hybrid valvetrain 有权
    具有混合阀门的发动机中的蒸汽吹扫控制

    公开(公告)号：US06532944B1

    公开(公告)日：2003-03-18

    申请号：US09650180

    申请日：2000-08-29

    申请人： Thomas George Leone ,  Diana Dawn Brehob ,  John D. Russell

    发明人： Thomas George Leone ,  Diana Dawn Brehob ,  John D. Russell

    IPC分类号： F02M3302

    CPC分类号： F02M25/08 ,  F01L1/34 ,  F01L9/04 ,  F02D13/0234 ,  F02D13/0253 ,  F02D13/0257 ,  F02D13/0269 ,  F02D41/0002 ,  F02D41/0032 ,  F02D2041/001 ,  F02D2250/41 ,  Y02T10/142 ,  Y02T10/18 ,  Y02T10/42

    摘要： A fuel vapor recovery method and system are disclosed for an engine with a hybrid valvetrain, in which the intake valves are actuated by more than one type of device. Normal fuel vapor recovery purging relies on a depression in intake manifold pressure to cause the flow of purge gases through the fuel vapor recovery system and into the intake manifold. As the hybrid valvetrain engine is unthrottled over much of the engine operating map, purging the fuel vapor recovery system requires decreasing the intake manifold pressure to allow a purge condition. Making a transition to a condition with a depressed manifold pressure is the subject herein.

    摘要翻译： 公开了一种具有混合阀门的发动机的燃料蒸汽回收方法和系统，其中进气门由多于一种类型的装置致动。 正常的燃料蒸气回收清洗依赖于进气歧管压力的下降，以使净化气体流过燃料蒸汽回收系统并进入进气歧管。 由于混合式瓦楞纸发动机在大部分发动机操作图中未被调节，所以清除燃料蒸汽回收系统需要降低进气歧管压力以允许吹扫条件。 过渡到具有抑制歧管压力的病症是本文的主题。

    Bi-fuel Engine Using Hydrogen
    10.
    发明申请
    Bi-fuel Engine Using Hydrogen 审中-公开
    双燃料发动机使用氢气

    公开(公告)号：US20090071453A1

    公开(公告)日：2009-03-19

    申请号：US11855439

    申请日：2007-09-14

    申请人： William Francis Stockhausen ,  Diana Dawn Brehob

    发明人： William Francis Stockhausen ,  Diana Dawn Brehob

    IPC分类号： F02B43/10

    CPC分类号： F02D19/0644 ,  F02D19/061 ,  F02D19/0689 ,  F02D19/0692 ,  F02D19/081 ,  F02D19/084 ,  Y02T10/36

    摘要： A method is disclosed for making a transition from fueling an engine with hydrogen to another fuel. That other fuel may be gasoline, a gasoline and alcohol mixture, or gaseous fuels, as examples. The other fuel has the capability of providing higher BMEP than the hydrogen because of better air utilization and because the other fuel occupies less volume of the combustion chamber. Because a desirable equivalence ratio to burn hydrogen is at 0.5 or less and a desirable equivalence ratio to burn other fuel is at 1.0, when a demand for BMEP that leads to a transition change from hydrogen fuel to the other fuel, the amount of air supplied to the engine is decreased to provide more torque and vice versa. During a transition in which liquid fuel supply is initiated, it may desirable to continue to provide some hydrogen, not leaner than 0.1 hydrogen equivalence ratio.

    摘要翻译： 公开了一种用于使从具有氢气的发动机加燃料到另一种燃料的过渡的方法。 例如，其他燃料可以是汽油，汽油和酒精混合物，或气体燃料。 另一种燃料具有比氢更高的BMEP能力，因为更好的空气利用率，并且因为其它燃料占据较少的燃烧室的体积。 因为燃烧氢气所需的等效比为0.5以下，燃烧其他燃料的期望当量比为1.0，当导致从氢燃料向另一燃料转变的BMEP的需求时，供给的空气量 到发动机减少以提供更多的扭矩，反之亦然。 在开始液体燃料供应的转变期间，可能需要继续提供一些氢，而不是比0.1氢当量比稀。