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91. 发明授权

US5467648A Air flow rate measuring device 失效
标题翻译：空气流量测量装置
公开(公告)号：US5467648A
公开(公告)日：1995-11-21
申请号：US120542
申请日：1993-09-14
申请人： Shinya Igarashi , Hiroshi Hirayama , Chihiro Kobayashi , Mitsukuni Tsutsui , Yukio Kato
发明人： Shinya Igarashi , Hiroshi Hirayama , Chihiro Kobayashi , Mitsukuni Tsutsui , Yukio Kato
IPC分类号： F02D45/00 , G01F1/68 , G01F1/684 , G01F5/00
CPC分类号： G01F5/00 , G01F1/6842
摘要： An air flow rate measuring device for measuring intake air flow rate in an automotive engine, improved to reduce any error attributable to variation in the configurations of air cleaner and/or duct forming air passage upstream of the flow rate measuring device, thus offering high accuracy of the flow rate measurement. In one aspect of the invention, the inlet opening of a sub-air passage is disposed to contain the axis of a main air passage, while the outlet opening of the sub-air passage is disposed in the vicinity of a wall defining the main air passage. In order to cause a local reduction of the pressure of the principal of the air flow at the outlet opening, a protrusion or a flat surface which causes impediment to the flow if air in the main air passage is provided immediately upstream of the outlet opening. In another aspect, the inlet surface in which the inlet of the sub-air passage opens is stepped in the direction of flow of the air so as to enable air to be introduced into air flow rate measuring portion in the sub-air passage from different regions in the main air passage while giving a preselected order of preference to these different regions.
摘要翻译：一种用于测量汽车发动机中的进气流量的空气流量测量装置，其改进以减少由于流量测量装置上游空气滤清器和/或导管形成空气通道的结构变化引起的任何误差，从而提供高精度的流量测量。在本发明的一个方面，副空气通道的入口设置成容纳主空气通道的轴线，而副空气通道的出口设置在限定主空气的壁的附近通道。为了使出口开口处的空气流的本征压力局部地减小，突起或平坦表面在紧邻导出口的上游处设置有主空气通道中的空气，从而阻碍流动。另一方面，副空气通路的入口打开的入口面沿着空气的流动方向阶梯状，以使得空气能够从不同的空气通道引入到副空气通道中的空气流量测量部分主空气通道中的区域，同时给予这些不同区域的预选顺序。

92. 发明授权

US5381691A Air flow meter 失效
标题翻译：空气流量计
公开(公告)号：US5381691A
公开(公告)日：1995-01-17
申请号：US126759
申请日：1993-09-27
申请人： Atsushi Miyazaki , Chihiro Kobayashi , Shinya Igarashi , Tetsuo Matsukura , Haruhiko Maeda , Nobukatsu Arai , Yoshihito Sekine
发明人： Atsushi Miyazaki , Chihiro Kobayashi , Shinya Igarashi , Tetsuo Matsukura , Haruhiko Maeda , Nobukatsu Arai , Yoshihito Sekine
IPC分类号： G01F1/68 , F02D35/00 , G01F1/684 , G01F5/00
CPC分类号： G01F1/6842 , G01F5/00
摘要： An air flow meter comprises a main passage for an axial main air flow; an axial subpassage for air flow, disposed in the main passage and formed so that part of the air in the main passage is taken in at an upstream side thereof and flows in the same direction as the axial main air flow; a radial subpassage for air flow, intersecting the axial subpassage at a downstream side of the axial subpassage so that air from the axial subpassage flows into the radial subpassage and is divided into two radial air flows running in different radial directions; the air having passed through the radial subpassage joining the axial main air flow. An air flow sensing means is disposed in the radial subpassage for sensing a flow rate of air therein, and a projection is disposed in the radial subpassage around the intersection of the axial and radial subpassages, for suppressing turbulence of air flow around the intersection.
摘要翻译：空气流量计包括用于轴向主空气流的主通道; 设置在主通道中并且形成为使主通道中的空气的一部分在其上游侧被吸入并沿与轴向主空气流相同的方向流动的用于空气流的轴向子通道; 用于空气流的径向子通道，在轴向子通道的下游侧与轴向子通道相交，使得来自轴向子通道的空气流入径向子通道并被分成在不同径向方向上运行的两个径向空气流; 已经通过径向子通道的空气连接轴向主空气流。气流检测装置设置在径向子通道中，用于感测其中的空气流量，并且在轴向和径向子通道的交点处的径向子通道中设置突起，用于抑制交叉点周围的空气流的紊流。

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