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公开(公告)号：US20210033441A1
公开(公告)日：2021-02-04
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：US20200370941A1
公开(公告)日：2020-11-26
申请号：US16985496
申请日：2020-08-05
Applicant: DENSO CORPORATION
Inventor： Hiroshi TAGAWA , Hiroyuki AKUZAWA , Teruaki KAIFU , Kengo ITO , Noboru KITAHARA
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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公开(公告)号：US20200032946A1
公开(公告)日：2020-01-30
申请号：US16594414
申请日：2019-10-07
Applicant: DENSO CORPORATION
Inventor： Noboru KITAHARA
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：US20190338733A1
公开(公告)日：2019-11-07
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：US20220333547A1
公开(公告)日：2022-10-20
申请号：US17655667
申请日：2022-03-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Takafumi YAMADA , Hiroyuki AKUZAWA , Noboru KITAHARA , Takashi OOGA , Taichi WATANABE
IPC: F02D41/24
Abstract: A data processing method of variable measurement data in an electronic control unit (ECU) is provided. The ECU that processes the data processing method calculates a filtering frequency based on a delay time frequency based on a transmission timing cycle of the measurement data and a processing timing cycle of the measurement data in the ECU, and also based on a pulsation frequency of the measurement data, and removes, from the measurement data, a component of the filtering frequency calculated in the calculation of the filtering frequency.
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Patent Agency Ranking
公开(公告)号：US20220309129A1
公开(公告)日：2022-09-29
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
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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公开(公告)号：US20210223117A1
公开(公告)日：2021-07-22
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：US20210063217A1
公开(公告)日：2021-03-04
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：US20200370937A1
公开(公告)日：2020-11-26
申请号：US16985416
申请日：2020-08-05
Applicant: DENSO CORPORATION
Inventor： Hiroyuki AKUZAWA , Hiroshi TAGAWA , Teruaki KAIFU , Kengo ITO , Noboru KITAHARA
IPC: G01F1/688
Abstract: A physical quantity measurement device includes a housing forming a measurement flow path, a physical quantity sensor that detects a physical quantity of fluid in the measurement flow path, and a sensor support that supports the physical quantity sensor. The sensor support includes a support front surface on which the physical quantity sensor is disposed, and a support back surface behind the support front surface. The housing includes a floor surface facing a support end of the sensor support, a front wall surface facing the support front surface, and a back wall surface opposite to the front wall surface across the floor surface and facing the support back surface. A front distance between the physical quantity sensor and the front wall surface in a front-back direction is larger than a floor distance between the floor surface and the support end in a height direction orthogonal to the front-back direction.
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公开(公告)号：US20200340416A1
公开(公告)日：2020-10-29
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 back-flow state, in which the intake air flows through the main passage in a reverse direction.
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