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    Fluid flow device and liquid metering
    6.
    发明授权
    Fluid flow device and liquid metering 失效
    流体流量装置和液体计量

    公开(公告)号：US3965221A

    公开(公告)日：1976-06-22

    申请号：US485518

    申请日：1974-07-03

    Applicant: Robert D. Englert ,  Lester Porter Berriman ,  Kenneth P. Armstrong ,  Douglas A. Roe

    Inventor： Robert D. Englert ,  Lester Porter Berriman ,  Kenneth P. Armstrong ,  Douglas A. Roe

    IPC: F02M9/12 ,  F02M7/16 ,  F02M9/10 ,  F02M19/04 ,  F23N1/02 ,  F02M7/20

    CPC classification number: F02M9/103 ,  F02M7/16 ,  Y10S261/38 ,  Y10S261/56 ,  Y10S261/60 ,  Y10S261/78

    Abstract: A combustible air-liquid fuel mixture having a substantially constant air-to-fuel ratio is produced for delivery to the intake manifold of an engine. Air is passed through a fluid flow device having a variable area throat zone to increase the velocity of the air to sonic, and the area of the throat zone is varied in correlation with operating demands imposed upon the engine for which the mixture is produced. Liquid fuel is metered from a supply into the air stream at or before the throat zone in direct proportion to the cross-sectional area of the throat zone. The pressure of the high velocity air stream is sensed at a point where it bears a predictable relationship to atmospheric pressure, and the rate of fuel delivered into the air stream is adjusted in response to changes in the air pressure sensed so that the air-to-fuel ratio of the mixture is maintained substantially constant. Due to the particular design of the fluid flow device, air at sonic velocity passes through the throat zone over substantially the entire operating range of the engine down to low manifold vacuum levels. During the relatively brief subsonic mode of operation when the manifold vacuum levels are quite low, the fluid flow device functions as a metering venturi to introduce the liquid fuel into the varying velocity air stream.

    Abstract translation: 产生具有基本上恒定的空气 - 燃料比的可燃空气 - 液体燃料混合物，用于输送到发动机的进气歧管。 空气通过具有可变面积喉部区域的流体流动装置，以将空气的速度增加到声音，并且与产生混合物的发动机的操作要求相关，改变了喉部区域的面积。 液体燃料从喉部区域的横截面积成正比地从喉部区域中或之前的供应流量计量。 感测到高速空气流的压力在其与大气压力具有可预测的关系的点处，并且响应于感测的空气压力的变化来调节输送到空气流中的燃料的速率，使得空气到 - 混合物的燃料比保持基本上恒定。 由于流体流动装置的特殊设计，声速的空气在发动机的基本上整个工作范围内通过喉部区域，直到低的歧管真空度。 在歧管真空度相当低的相对短暂的亚音速操作模式期间，流体流动装置用作计量文丘里管，以将液体燃料引入变速气流中。

    A liquid metering device
    7.
    发明授权
    A liquid metering device 失效
    液体测量装置

    公开(公告)号：US3857543A

    公开(公告)日：1974-12-31

    申请号：US34223573

    申请日：1973-03-16

    Applicant: MCKEEN J

    Inventor： MCKEEN J

    IPC: F02M7/16 ,  F02M27/04 ,  B05B3/14 ,  F16K31/02

    CPC classification number: F02M27/04 ,  F02M7/16 ,  F02M25/0225 ,  F02M25/028 ,  Y02T10/121 ,  Y10T137/87652

    Abstract: A liquid metering device designed primarily for metering fuel into an internal combustion engine of the reciprocating type, is installed within the intake pipe of the intake manifold. The pump device comprises an elongated housing having a port at one end, a rod-like member is arranged in a housing coaxially therewith, with one end of the member secured to the closed end of the housing. The other end of the member carries an enlarged head which is arranged to snugly but slidably fit within the port. The member and housing are made of magnetostrictive materials of different polarity and the entire housing is surrounded by an electromagnetic coil which is arranged to connect to a current pulse generator. Liquid is introduced into the housing and current pulses from the generator are applied to the coil. The magnetostrictive characteristics of the housing and piston cause the housing to elongate relative to the member with each pulse, so that a shearing action takes place between the head and wall of the port which forces the liquid out of the device in the form of uniform small diameter liquid particles, which are carried along by the air into the intake manifold and into the engine cylinders. A similar device is used to meter water into the intake manifold to increase the efficiency of the engine by increasing the anti-knock properties of the fuel and, in turn, the pollutants exhausted from the engine are minimized.

    Abstract translation: 主要用于将燃料计量为往复式内燃机的液体计量装置安装在进气歧管的进气管内。 泵装置包括细长壳体，其在一端具有端口，杆状构件与其同轴地布置在壳体中，其中该构件的一端固定到壳体的封闭端。 该构件的另一端具有放大的头部，其被布置成紧密但可滑动地配合在端口内。 构件和壳体由不同极性的磁致伸缩材料制成，并且整个壳体被布置成连接到电流脉冲发生器的电磁线圈包围。 将液体引入壳体中，并且将来自发生器的电流脉冲施加到线圈。 壳体和活塞的磁致伸缩特性使得壳体相对于每个脉冲的构件延伸，使得在端口的头部和壁之间发生剪切动作，该剪切作用以均匀的小的形式迫使液体离开设备 直径的液体颗粒，其被空气携带到进气歧管中并进入发动机气缸。 类似的装置用于将水计量到进气歧管中，以通过增加燃料的抗爆震特性来提高发动机的效率，从而使从发动机排出的污染物最小化。

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