公开(公告)号：US20100095753A1

公开(公告)日：2010-04-22

申请号：US12654236

申请日：2009-12-15

申请人： Takashi Enomoto ,  Noboru Kitahara

发明人： Takashi Enomoto ,  Noboru Kitahara

IPC分类号： G01M15/00

CPC分类号： G01F1/6842

摘要： An air flow measuring device has a throttle portion provided in a first sub-passage, a second sub-passage branched from the first sub-passage at an upstream side of the throttle portion, and a flow amount sensor located in the second sub-passage. The second sub-passage is configured to introduce therein a part of air flowing in the first sub-passage, and an inlet of the second sub-passage is open into the first sub-passage at one side in a first radial direction perpendicular to a flow direction of air flowing in the first sub-passage. Furthermore, the throttle portion is provided to gradually reduce a passage dimension of the first sub-passage in a second radial direction, as toward an outlet of the first sub-passage. Here, the second radial direction is perpendicular to a surface defined by the first radial direction and the flow direction of air in the first sub-passage.

摘要翻译： 气流测量装置具有设置在第一子通道中的节流部分，在节流部分的上游侧从第一子通道分支的第二子通道和位于第二子通道中的流量传感器 。 第二子通道构造成在其中引入在第一子通道中流动的一部分空气，并且第二子通道的入口在垂直于第一子通道的第一径向方向的一侧向第一子通道开放 在第一子通道中流动的空气的流动方向。 此外，节流部设置成朝向第一子通道的出口逐渐减小第一子通道的沿第二径向的通道尺寸。 这里，第二径向垂直于由第一子通道中的第一径向方向和空气的流动方向限定的表面。

公开(公告)号：US07654134B2

公开(公告)日：2010-02-02

申请号：US12120882

申请日：2008-05-15

申请人： Takashi Enomoto ,  Noboru Kitahara

发明人： Takashi Enomoto ,  Noboru Kitahara

IPC分类号： G01M15/00

CPC分类号： G01F1/6842

摘要： An air flow measuring device has a throttle portion provided in a first sub-passage, a second sub-passage branched from the first sub-passage at an upstream side of the throttle portion, and a flow amount sensor located in the second sub-passage. The second sub-passage is configured to introduce therein a part of air flowing in the first sub-passage, and an inlet of the second sub-passage is open into the first sub-passage at one side in a first radial direction perpendicular to a flow direction of air flowing in the first sub-passage. Furthermore, the throttle portion is provided to gradually reduce a passage dimension of the first sub-passage in a second radial direction, as toward an outlet of the first sub-passage. Here, the second radial direction is perpendicular to a surface defined by the first radial direction and the flow direction of air in the first sub-passage.

公开(公告)号：US20070125167A1

公开(公告)日：2007-06-07

申请号：US11603899

申请日：2006-11-24

申请人： Noboru Kitahara

发明人： Noboru Kitahara

IPC分类号： G01F1/68

CPC分类号： G01F1/6842 ,  G01F1/684

摘要： A fluid flow detecting apparatus is disclosed for detecting a characteristic of fluid flowing in a fluid passage. The fluid flow detecting apparatus includes a sensor body that defines a bypass passage for flow of a portion the fluid flowing in the fluid passage. The apparatus also includes a sensor provided in the bypass passage for detecting the characteristic of the fluid flowing in the bypass passage and a plurality of plates. The sensor body is provided between the plurality of plates. Each of the plates has a width dimension oriented approximately along the direction of flow of fluid flowing in the fluid passage. The width of the plates is greater than a corresponding width dimension of the sensor body such that the sensor body is inside a region defined between the plates.

公开(公告)号：US20060016254A1

公开(公告)日：2006-01-26

申请号：US11151642

申请日：2005-06-14

申请人： Yasuo Okuda ,  Masakazu Yamada ,  Satoshi Furukawa ,  Minoru Kondo ,  Noboru Kitahara ,  Shigeru Kamio ,  Harufumi Muto

发明人： Yasuo Okuda ,  Masakazu Yamada ,  Satoshi Furukawa ,  Minoru Kondo ,  Noboru Kitahara ,  Shigeru Kamio ,  Harufumi Muto

IPC分类号： G01P5/00 ,  G01M19/00

CPC分类号： G01F5/00 ,  G01F1/6842 ,  G01F1/696 ,  G01F1/6965 ,  G01F1/72

摘要： An intake air flow detecting device is provided to an intake air passage, through which intake air flows into an internal combustion engine. Intake air flow is divided into a main passage and a bypass passage. The detecting device includes a thermal air flowmeter, a bypass flow delay information calculating means, and a response delay compensating means. The thermal air flowmeter includes a detector arranged in the bypass passage for detecting an air flow amount in the intake air passage. The bypass flow delay information calculating means calculates a bypass flow delay information representing delay in variation in a flow amount in the bypass passage with respect to variation in a flow amount in the main passage. The response delay compensating means compensates delay in response of the air flowmeter in accordance with the bypass flow delay information.

摘要翻译： 进气流量检测装置设置在进气通道内，进气通过该进气通道流入内燃机。 进气流分为主通道和旁路通道。 检测装置包括热空气流量计，旁路流量延迟信息计算装置和响应延迟补偿装置。 热空气流量计包括布置在旁路通道中用于检测进气通道中的空气流量的检测器。 旁路流量延迟信息计算装置计算旁路流量延迟信息，其表示相对于主通道中的流量的变化，旁通通道中的流量的变化的延迟。 响应延迟补偿装置根据旁路流量延迟信息补偿空气流量计的响应延迟。

公开(公告)号：US06619140B2

公开(公告)日：2003-09-16

申请号：US09865724

申请日：2001-05-29

申请人： Noboru Kitahara ,  Takao Ban

发明人： Noboru Kitahara ,  Takao Ban

IPC分类号： G01F137

CPC分类号： G01F1/6842

摘要： A separator partitions an upstream side air passage of a bypass passage into first and second sub passages. A thermal flow sensor is attached to the separator facing the first sub passage. A convex is formed on the inner wall of an outer pipe defining the second sub passage. The convex protrudes toward the separator. Minimum flow passage area S2 of the second sub passage is smaller than minimum flow passage area S1 of the first sub passage, so that flow passage loss of the second sub passage is larger than flow passage loss of the first sub passage. Thus, measured air-flow amount average when the air-flow pulsates is corrected to be larger.

摘要翻译： 分离器将旁通通路的上游侧空气通路分隔成第一和第二副通路。 热流量传感器附接到面向第一子通道的分离器。 凸缘形成在限定第二子通道的外管的内壁上。 凸起朝向分隔件突出。 第二副通路的最小流路面积S2小于第一副通路的最小流路面积S1，第二副通路的流路损失大于第一副通路的流路损失。 因此，将气流脉动时的测定气流量平均值校正为较大。

公开(公告)号：US5544527A

公开(公告)日：1996-08-13

申请号：US363006

申请日：1994-12-23

申请人： Noboru Kitahara ,  Minoru Kondo ,  Yukio Sawada

发明人： Noboru Kitahara ,  Minoru Kondo ,  Yukio Sawada

IPC分类号： G01F1/68 ,  G01F1/684 ,  G01F5/00 ,  G01P5/12

CPC分类号： G01P5/12 ,  G01F1/6842 ,  G01F5/00

摘要： A flow meter includes a tubular member having a main passage in which fluid flows. A branch passage member disposed in the main passage has a branch passage in which the fluid flows. A support member connects the branch passage member and a wall of the tubular member, and supports the branch passage member within the main passage. A partition arrangement disposed in the branch passage divides the branch passage into a plurality of sub passages extending along a flow of the fluid. A flow-rate measuring resistor is disposed in a region of the branch passage downstream of the partition arrangement for sensing a rate of a flow of the fluid in the branch passage. A control circuit electrically connected to the flow-rate measuring resistor is operative for calculating a measurement value from an output signal of the flow-rate measuring resistor. An outlet formed in the branch passage member is operative for connecting the branch passage with the main passage to enable the fluid to move from the branch passage into the main passage after the fluid meets the flow-rate measuring resistor. The partition arrangement includes a partition plate. A length of a part of the partition plate, measured along a direction of the fluid flow, depends on a position of the part.

摘要翻译： 流量计包括具有流体流动的主通道的管状构件。 设置在主通道中的分支通道构件具有流体流动的分支通道。 支撑构件连接分支通道构件和管状构件的壁，并且在主通道内支撑分支通道构件。 设置在分支通道中的分隔装置将分支通道分成沿着流体流延伸的多个子通道。 流量测量电阻器设置在分支通道下游的分支通道的区域中，用于感测分支通道中流体的流动速率。 与流量测量电阻器电连接的控制电路用于根据流量测量电阻器的输出信号计算测量值。 在分支通道构件中形成的出口用于将分支通道与主通道相连接，以使流体在流体与流量测量电阻器相遇之后能够从分支通道移动到主通道中。 分隔装置包括隔板。 沿着流体流动的方向测量的隔板的一部分的长度取决于部件的位置。