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公开(公告)号：US11371870B2
公开(公告)日：2022-06-28
申请号：US16928078
申请日：2020-07-14
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara , Teruaki Kaifu , Tomoaki Nakano
Abstract: An air flow rate measurement device includes a flow rate detection unit, a detected flow rate response compensation unit, a pulsation amplitude calculation unit, a correction value calculation unit, and an error correction unit. The flow rate detection unit detects a detected flow rate. The detected flow rate response compensation unit advances a response time of the detected flow rate and calculating a compensation flow rate which is an output obtained by compensating for a response delay of the detected flow rate. The pulsation amplitude calculation unit calculates a pulsation amplitude correlated with a pulsation amplitude in the detected flow rate. The correction value calculation unit calculates a pulsation correction value which is a value for correcting the compensation flow rate based on the pulsation amplitude. The error correction unit corrects the compensation flow rate based on the pulsation correction value.
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公开(公告)号：US11365996B2
公开(公告)日：2022-06-21
申请号：US17075909
申请日：2020-10-21
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara
Abstract: In a measurement control device that measures an airflow, an amplitude calculator calculates, by use of an output value of a sensor, a pulsation amplitude that is a difference between a pulsation maximum and an average airflow or a difference between the pulsation maximum and a pulsation minimum. The pulsation maximum is a maximum value of pulsation generated in the airflow, the average airflow is an average value of the pulsation, and the pulsation minimum is a minimum value of the pulsation. A correction parameter acquirer acquires a correction parameter corresponding to the calculated pulsation amplitude by use of a correction characteristic. An airflow corrector corrects the airflow by use of the acquired correction parameter.
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公开(公告)号：US11181411B2
公开(公告)日：2021-11-23
申请号：US16553439
申请日：2019-08-28
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara , Hisato Kuramoto
Abstract: A flow rate measurement system outputs a measurement value which represents a magnitude of a flow rate and a flow direction of a fluid that flows through a particular main passage. The system includes a bypass passage disposed in the main passage, a detection unit disposed in the bypass passage that outputs a detection value corresponding to a magnitude of a flow rate and a flow direction of the fluid flowing through the bypass passage, and a calculation unit that, by using the detection value, calculates the measurement value by compensating as needed for a delay in the change in flow rate in the bypass passage with respect to the change in flow rate in the main passage. The compensation is based on whether a change of flow direction has occurred in the main passage or the bypass passage.
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公开(公告)号：US11555723B2
公开(公告)日：2023-01-17
申请号：US17221875
申请日：2021-04-05
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara
Abstract: A physical quantity measurement device that measures a physical quantity of a fluid has an inflow port and an outflow port, and includes a passage flow channel, a branch flow channel, and a physical quantity detector. An inner peripheral surface of the passage flow channel extends over a pair of facing surfaces, which face each other across the flow passage boundary portion and the inflow port on an upstream side of the flow channel boundary portion. The inner peripheral surface further includes an inflow step surface which forms a step facing the inflow port side.
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公开(公告)号：US11480455B2
公开(公告)日：2022-10-25
申请号：US16985496
申请日：2020-08-05
Applicant: DENSO CORPORATION
Inventor： Hiroshi Tagawa , Hiroyuki Akuzawa , Teruaki Kaifu , Kengo Ito , Noboru Kitahara
IPC: G01F1/68 , G01F1/69 , G01F5/00 , G01F1/684 , G01F1/688 , G01F15/14 , G01F15/18 , F02M35/10 , G01K1/14 , G01K13/02 , G01K13/024
Abstract: A physical quantity measurement device includes a housing forming a measurement flow path through which the fluid flows and a container space that houses a part of a detection unit. An inner surface of the housing includes a housing intersecting surface that intersects an arrangement direction in which the measurement flow path and the container space are arranged, a housing flow path surface extending from the housing intersecting surface toward the measurement flow path, and a housing container surface extending from the housing intersecting surface toward the container space. The housing includes a housing partition that protrudes from the inner surface toward the detection unit and contacts the detection unit between the housing and the detection unit such that the housing partition separates the measurement flow path and the container space from each other.
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Patent Agency Ranking
公开(公告)号：US11448543B2
公开(公告)日：2022-09-20
申请号：US16749485
申请日：2020-01-22
Applicant: DENSO CORPORATION
Inventor： Junzo Yamaguchi , Noboru Kitahara , Hiroshi Tagawa , Masaki Inoue , Hiroyuki Akuzawa
IPC: G01F15/02 , G01K13/02 , G01F1/68 , G01F5/00 , F02M35/10 , G01F1/684 , G01F1/696 , G01F15/14 , G01F15/16 , G01F15/18 , G01K13/024
Abstract: A physical quantity measurement device measures a physical quantity of a fluid. A detection unit has a physical quantity detector that detects a physical quantity of the fluid in a measurement flow channel. A housing accommodates at least a part of the detection unit and forms the measurement flow channel. The housing includes a housing attachment that is attached to a predetermined attaching target, and a position holder holding a position of the detection unit by contacting the detection unit. The housing includes an inward part positioned inward of the attaching target and an outward part positioned outward of the attaching target. The position holder is provided inward of the housing attachment in an alignment direction along which the inward part and the outward part are aligned.
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公开(公告)号：US20200340840A1
公开(公告)日：2020-10-29
申请号：US16928078
申请日：2020-07-14
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara , Teruaki Kaifu , Tomoaki Nakano
Abstract: An air flow rate measurement device includes a flow rate detection unit, a detected flow rate response compensation unit, a pulsation amplitude calculation unit, a correction value calculation unit, and an error correction unit. The flow rate detection unit detects a detected flow rate. The detected flow rate response compensation unit advances a response time of the detected flow rate and calculating a compensation flow rate which is an output obtained by compensating for a response delay of the detected flow rate. The pulsation amplitude calculation unit calculates a pulsation amplitude correlated with a pulsation amplitude in the detected flow rate. The correction value calculation unit calculates a pulsation correction value which is a value for correcting the compensation flow rate based on the pulsation amplitude. The error correction unit corrects the compensation flow rate based on the pulsation correction value.
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公开(公告)号：US09109930B2
公开(公告)日：2015-08-18
申请号：US13958688
申请日：2013-08-05
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara
Abstract: A plate-like flow sensor is located in a bypass passage such that a front-to-rear direction of the flow sensor is substantially along a width direction of the bypass passage. The flow sensor divides a flow from its upstream into a first flow, which passes on its front side, and a second flow, which passes on its rear side. The bypass passage has a bent portion in which the first flow and the second flow merge on a downstream side of the flow sensor. A flow deflection unit changes a turning quantity of at least one of the first flow and the second flow such that a turning quantity of the first flow and a turning quantity of the second flow are substantially conformed in the bent portion.
Abstract translation: 板状流量传感器位于旁路通道中，使得流量传感器的前后方向基本上沿旁路通道的宽度方向。 流量传感器将流动从其上游划分成在其前侧通过的第一流量和在其后侧通过的第二流量。 旁通通道具有弯曲部分，其中第一流动和第二流动在流量传感器的下游侧合流。 流动偏转单元改变第一流量和第二流量中的至少一个的回转量，使得第一流量的转向量和第二流量的转向量在弯曲部分中基本一致。
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公开(公告)号：US11313709B2
公开(公告)日：2022-04-26
申请号：US16985663
申请日：2020-08-05
Applicant: DENSO CORPORATION
Inventor： Hiroyuki Akuzawa , Kengo Ito , Hiroshi Tagawa , Teruaki Kaifu , Noboru Kitahara
IPC: G01F1/69 , G01F5/00 , G01F1/684 , G01F1/688 , G01F15/14 , G01F15/18 , F02M35/10 , G01K1/14 , G01K13/02 , G01K13/024
Abstract: A physical quantity measurement device includes a housing forming a measurement flow path in which a sensor support supports a physical quantity sensor. The measurement flow path includes a sensor path in which the physical quantity sensor is disposed, an upstream curved path between the sensor path and an inlet, and a downstream curved path between the sensor path and an outlet. The housing includes a measurement narrowed portion that gradually narrows the measurement flow path in a direction from the inlet toward the physical quantity sensor. An upstream end of the sensor support is provided upstream of the measurement narrowed portion in an arrangement cross section along an imaginary straight line passing through the physical quantity sensor and extending in an arrangement direction in which the upstream curved path and the downstream curved path are arranged.
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公开(公告)号：US11255709B2
公开(公告)日：2022-02-22
申请号：US16985547
申请日：2020-08-05
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara , Teruaki Kaifu , Kengo Ito , Hiroyuki Akuzawa , Hiroshi Tagawa
IPC: G01F1/69 , G01F5/00 , G01F1/684 , G01F1/688 , G01F15/14 , G01F15/18 , F02M35/10 , G01K1/14 , G01K13/02 , G01K13/024
Abstract: A physical quantity measurement device includes a housing forming a through flow path, and a measurement flow path branching from the through flow path. A physical quantity sensor is provided in the measurement flow path. An inner surface of the housing includes an inlet ceiling surface and an inlet floor surface which face each other and define an inlet through path that is between and connects an inlet of the through flow path and an inlet of the measurement flow path, The inlet ceiling surface includes a ceiling inclined surface that extends from the inlet of the through flow path and is inclined with respect to the inlet floor surface. A distance between the ceiling inclined surface and the inlet floor surface gradually decreases in a direction from the inlet of the through flow path toward an outlet of the through flow path.
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