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公开(公告)号：US5709197A
公开(公告)日：1998-01-20
申请号：US701057
申请日：1996-08-21
IPC分类号： F02M41/08 , F02M51/04 , F02M59/44 , F02M63/02 , F02M69/02 , F02M69/46 , F04B43/08 , F04B53/04 , F02M25/00 , F04B25/02 , F04B27/08
CPC分类号： F02M63/0225 , F04B53/04
摘要： Fuel is pressurized by the expansion and contraction of a pump chamber defined inside a casing according to the rotation of a power input shaft which penetrates from the outside of the casing into its inside. A first seal member is provided between the casing and the power input shaft and prevents escape of fuel which is inside the casing, and a second seal member is provided in series therewith. Further, leakage of fuel to the outside of the casing from the second seal member is prevented by the provision of a drain conduit which drains fuel which has leaked into a space defined between the first seal member and the second seal member.
摘要翻译： 根据从壳体外部进入其内部的动力输入轴的旋转，由壳体内限定的泵室的膨胀和收缩来加压燃料。 第一密封构件设置在壳体和动力输入轴之间，并且防止壳体内的燃料的逸出，并且与其串联设置第二密封构件。 此外，通过设置泄漏到泄漏到限定在第一密封构件和第二密封构件之间的空间的燃料的排水管道，可以防止燃料从第二密封构件向壳体外部的泄漏。
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公开(公告)号：US5770796A
公开(公告)日：1998-06-23
申请号：US707183
申请日：1996-09-03
IPC分类号： F02M37/06 , F02D41/00 , F02D41/22 , F02D41/34 , F02D45/00 , F02M63/02 , F02M65/00 , F04B43/08 , G01M15/00
CPC分类号： F02D41/008 , F02D41/221 , F02M63/0225 , F02M65/00
摘要： This device diagnoses whether or not a fuel pump which supplies fuel to an engine has failed. The pump includes a plurality of pressure chambers which in turn discharge fuel according to the rotation of an input shaft which turns together with the engine. The supply capacity of the fuel pump when one of the pressure chambers has failed so as not to be able to discharge fuel is set to a value lower than the maximum value of the fuel supply amount which is required by the engine. A mechanism is provided which decides whether or not the fuel supply requirement of the engine is being satisfied, and failure of the fuel pump is diagnosed based upon the result of this decision. Further, accurate diagnosis can be performed by detecting the power output of the engine for each cylinder individually, and by deciding upon fuel supply insufficiency for each cylinder individually according to variation of the output power for each cylinder individually.
摘要翻译： 该装置诊断向发动机供给燃料的燃料泵是否失效。 泵包括多个压力室，它们依次与发动机一起转动的输入轴的旋转而排出燃料。 当一个压力室发生故障而不能排出燃料时，燃料泵的供给容量被设定为低于发动机要求的燃料供给量的最大值的值。 提供了一种决定是否满足发动机的燃料供给要求的机构，并且基于该决定的结果来诊断燃料泵的故障。 此外，可以通过单独地检测每个气缸的发动机的功率输出，并且通过根据每个气缸的输出功率的变化单独决定每个气缸的燃料供应不足来进行准确的诊断。
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公开(公告)号：US5700135A
公开(公告)日：1997-12-23
申请号：US598580
申请日：1996-02-12
摘要： A cam plate pump comprises a pressurizing chamber formed by a bellows which elongates and contracts along a center axis parallel to the input shaft of the pump. The cam plate rotates together with the input shaft, and compresses the bellows via a piston. A mechanism for guiding the piston along the center axis, and a mechanism for blocking the rotational torque acting on the bellows via the piston are provided. These mechanisms prevent a bending load or twisting load from acting on the bellows.
摘要翻译： 凸轮板泵包括由沿着与泵的输入轴平行的中心轴伸长并收缩的波纹管形成的加压室。 凸轮板与输入轴一起旋转，并通过活塞压缩波纹管。 提供了用于沿着中心轴线引导活塞的机构，以及用于阻挡作用在波纹管上的经由活塞的旋转扭矩的机构。 这些机构防止弯曲载荷或扭转载荷作用在波纹管上。
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