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    • 38. 发明授权
    • Fuel metering diaphragm with backing plate
    • 带背板的燃油计量隔膜
    • US09027910B2
    • 2015-05-12
    • US13771451
    • 2013-02-20
    • Walbro Engine Management, L.L.C.
    • Matthew A. BraunGary J. Burns
    • F02M37/00F02M7/20F02M37/02F02M17/04
    • F02M7/20F02M17/04F02M37/00F02M37/02
    • In at least some implementations, a carburetor having a fuel metering system including a diaphragm assembly that moves in response to pressure changes in a metering chamber to actuate a metering valve may include a flexible diaphragm adapted to carried by a body of the carburetor at a periphery to define part of the metering chamber. The portion of the diaphragm that defines part of the metering chamber defines a chamber projected area of the diaphragm. A backing plate is attached to the flexible diaphragm and arranged to be located outside the metering chamber. The backing plate having an outer perimeter defining a plate projected area, wherein an area ratio of the plate projected area to the chamber projected area is greater than about 0.1.
    • 在至少一些实施方式中,具有燃料计量系统的化油器包括响应于计量室中的压力变化而移动以致动计量阀的隔膜组件,其可以包括柔性隔膜,所述柔性隔膜适于在周边的一部分由化油器的主体承载 以限定计量室的一部分。 隔膜的限定计量室的一部分的部分限定了膜片的腔室投影面积。 背板连接到柔性隔膜上并且布置成位于计量室外部。 背板具有限定板投影面积的外周边,其中板投射面积与室投影面积的面积比大于约0.1。
    • 39. 发明授权
    • Temperature responsive pressure splitter
    • 温度敏感分压器
    • US5879594A
    • 1999-03-09
    • US891433
    • 1997-07-10
    • Barry L. Holtzman
    • Barry L. Holtzman
    • F02M7/11F02M7/20F02M7/12
    • F02M7/11F02M7/20Y10T137/1963
    • A pressure splitter is made having a series or orifices, at least one of which has its effective size change with changes in temperature. This size change is provided by using materials with different thermal expansion rates, these different rates changing the relative positions of a body and the free end of a temperature responsive member. This same principle can be used in conjunction with a pressure responsive element, such as a sealed bellows, to provide a splitter which has an intermediate pressure which changes in response to both temperature and pressure. A splitter with temperature compensation only can be used to effectively modify carburetor fuel flow providing a more constant fuel/air ratio. A splitter using both temperature and pressure responsive elements can be used to more effectively maintain carburetor fuel/air ratio over a wide range of relative air densities caused by changes in atmospheric temperature and altutude.
    • 制造具有一系列或多个孔口的压力分配器,其中至少一个具有随温度变化的有效尺寸变化。 通过使用具有不同热膨胀率的材料提供这种尺寸变化,这些不同的速率改变了主体和温度响应构件的自由端的相对位置。 该相同的原理可以与诸如密封波纹管的压力响应元件结合使用,以提供具有响应于温度和压力而改变的中间压力的分流器。 具有温度补偿功能的分路器只能用于有效地修改化油器燃油流量,从而提供更恒定的燃油/空气比。 使用温度和压力响应元件的分流器可用于在由大气温度和高度变化引起的宽范围的相对空气密度下更有效地维持化油器燃料/空气比。