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公开(公告)号：US11221246B2
公开(公告)日：2022-01-11
申请号：US17005364
申请日：2020-08-28
Applicant: DENSO CORPORATION
Inventor： Takuma Tsuchiya , Kengo Itou , Noboru Kitahara , Yasushi Goka
Abstract: A physical quantity sensing device is installed to a circuit board and is configured to output a signal, which corresponds to a physical quantity of air flowing through a physical quantity measurement passage. A physical quantity measurement passage inlet, which is communicated with the physical quantity measurement passage, includes a first inner surface and a second inner surface. A second distance, which is measured from the physical quantity sensing device to the second inner surface in a plate thickness direction of the circuit board, is larger than a first distance, which is measured from the circuit board to the first inner surface in the plate thickness direction of the circuit board.
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公开(公告)号：US11125193B2
公开(公告)日：2021-09-21
申请号：US16512797
申请日：2019-07-16
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara , Hajime Mashita , Takashi Ooga , Teruaki Kaifu
Abstract: A temperature sensor and a relative humidity sensor are placed in an environment allowing air to flow and are displaced in an upstream-downstream direction of the airflow. An absolute humidity acquisition unit acquires absolute humidity of air from outputs from the temperature sensor and the relative humidity sensor. A delay adjustment unit delays an output from one of the temperature sensor and the relative humidity sensor placed upstream and to reconcile change-behaviors of outputs from the temperature sensor and the relative humidity sensor in response to a state change in air. The absolute humidity acquisition unit acquires the absolute humidity based on the output from the other of the temperature sensor and the relative humidity sensor placed downstream and an output acquired from the one sensor placed upstream and delayed in the delay adjustment unit.
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公开(公告)号：US11067421B2
公开(公告)日：2021-07-20
申请号：US16594403
申请日：2019-10-07
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara
Abstract: A physical quantity measurement device measures a physical quantity of a fluid. The device includes a passage flow channel, a branch flow channel, a flow channel partition portion that separates the passage flow channel and the branch flow channel to have the branch flow channel branch off from the passage flow channel, and a physical quantity detector. The flow channel partition portion has a partition top portion as an upstream-side end that is not exposed through the inflow port.
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公开(公告)号：US10907762B2
公开(公告)日：2021-02-02
申请号：US16594414
申请日：2019-10-07
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara
IPC: G05F5/00 , G01F1/68 , F16L55/179 , A61M39/22 , B01F5/06 , B01F15/02 , B01J19/00 , F16L55/26 , G01F1/684 , G01F5/00 , G01F1/00
Abstract: A physical quantity measurement device includes a passage flow channel, a branch flow channel, and a physical quantity detection unit. An inflow region extending from the inflow port and a lateral region laterally arranged to the inflow region are included in at least one of the passage flow channel and the branch flow channel. The physical quantity detection unit is disposed in the lateral region. A guiding surface that guides away from the lateral region in the lateral direction foreign matter is included in at least one of an inner peripheral surface of the passage flow channel and an inner peripheral surface of the branch flow channel at a position upstream of the lateral region.
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公开(公告)号：US12061667B2
公开(公告)日：2024-08-13
申请号：US17579961
申请日：2022-01-20
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Takafumi Yamada , Hiroyuki Akuzawa , Noboru Kitahara , Taichi Watanabe
CPC classification number: G06F17/18 , G01M15/042
Abstract: A data processing method is a data processing method in which variable measurement data transmitted from a sensor at a first cycle is computationally processed at a second cycle that is longer than the first cycle. The measurement data is acquired in a third cycle that is longer than the first cycle and shorter than the second cycle, an average value of the acquired measurement data is calculated at the second cycle, and computation processing thereof is performed.
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Patent Agency Ranking
公开(公告)号：US11300434B2
公开(公告)日：2022-04-12
申请号：US16985322
申请日：2020-08-05
Applicant: DENSO CORPORATION
Inventor： Kengo Ito , Hiroyuki Akuzawa , 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 including a measurement inlet and a measurement outlet. The measurement flow path includes a sensor path in which a physical quantity sensor is disposed, an upstream curved path curved to extend from the sensor path toward the measurement inlet, and a downstream curved path curved to extend from the sensor path toward the measurement outlet. An inner surface of the housing includes an upstream outer curved surface that defines an outer outline of a curved part of the upstream curved path, and a downstream outer curved surface that defines an outer outline of a curve part of the downstream curved path. A degree of recess of the downstream outer curved surface is larger than a degree of recess of the upstream outer curved surface.
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公开(公告)号：US11111887B2
公开(公告)日：2021-09-07
申请号：US16512831
申请日：2019-07-16
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara , Hajime Mashita , Takashi Ooga , Teruaki Kaifu
Abstract: A temperature sensor differs from a relative humidity sensor in responsiveness when the temperature of air changes. An absolute humidity acquisition unit acquires absolute humidity of air from outputs from the temperature sensor and the relative humidity sensor. A delay adjustment unit is to delay an output from one of the temperature sensor and the relative humidity sensor, which is a high response sensor having a higher responsiveness, and to reconcile change-behaviors of the output from the temperature sensor and the output from the relative humidity sensor in response to a temperature change in air. The absolute humidity acquisition unit acquires the absolute humidity based on the output from the other of the temperature sensor and the relative humidity sensor, which is a low response sensor having a lower responsiveness, and the sensor signal, which is from the high response sensor and delayed in the delay adjustment unit.
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公开(公告)号：US11085392B2
公开(公告)日：2021-08-10
申请号：US16758703
申请日：2018-11-20
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Hisato Kuramoto , Noboru Kitahara
Abstract: An intake air amount measuring device includes a by-pass-type air flowmeter and a processor that calculates an intake air amount of an engine based on the measurement result of the air flowmeter. When calculating the intake air amount, the processor performs lag or lead compensation for a response delay of a change in an intake flow rate in the bypass passage in relation to a change in an intake flow rate in the main passage based on loss coefficients of the main passage and the bypass passage. The processor causes values of the loss coefficients of the main passage and the bypass passage, which are used in the compensation, to be different between a forward flow state, in which the intake air flows through the main passage in a forward direction, and a backflow state, in which the intake air flows through the main passage in a reverse direction.
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公开(公告)号：US11002617B2
公开(公告)日：2021-05-11
申请号：US16594368
申请日：2019-10-07
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：US20190338737A1
公开(公告)日：2019-11-07
申请号：US16512797
申请日：2019-07-16
Applicant: DENSO CORPORATION
Inventor： Noboru Kitahara , Hajime Mashita , Takashi Ooga , Teruaki Kaifu
Abstract: A temperature sensor and a relative humidity sensor are placed in an environment allowing air to flow and are displaced in an upstream-downstream direction of the airflow. An absolute humidity acquisition unit acquires absolute humidity of air from outputs from the temperature sensor and the relative humidity sensor. A delay adjustment unit delays an output from one of the temperature sensor and the relative humidity sensor placed upstream and to reconcile change-behaviors of outputs from the temperature sensor and the relative humidity sensor in response to a state change in air. The absolute humidity acquisition unit acquires the absolute humidity based on the output from the other of the temperature sensor and the relative humidity sensor placed downstream and an output acquired from the one sensor placed upstream and delayed in the delay adjustment unit.
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