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公开(公告)号：US20210054799A1
公开(公告)日：2021-02-25
申请号：US17091213
申请日：2020-11-06
Applicant: DENSO CORPORATION
Inventor： Akitoshi MIZUTANI , Noboru KITAHARA
Abstract: A gas flow rate measurement device includes a flow rate sensor that outputs a voltage that includes variations due to differences in an external environment and variations due to individual differences, a correction coefficient storage unit that stores a correction coefficient for correcting the output voltage of the flow rate sensor based on a corresponding relationship between the output voltage of the flow rate sensor and the flow rate of the gas, and a correction calculation unit that corrects the output voltage of the flow rate sensor by using the correction coefficient. The correction coefficient is a coefficient for directly converting the output voltage of the flow rate sensor into an ideal voltage value that does not include the variations due to the differences in the external environment and does not include the variations due to the individual differences in the flow rate sensor.
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公开(公告)号：US20200319003A1
公开(公告)日：2020-10-08
申请号：US16910585
申请日：2020-06-24
Applicant: DENSO CORPORATION
Inventor： Junzo YAMAGUCHI , Noboru KITAHARA , Hiroshi TAGAWA , Masaki INOUE , Kengo ITO , Teruaki KAIFU
IPC: G01F1/684
Abstract: A physical quantity measurement device includes a measurement channel through which the fluid flows to be measured, a physical quantity detector that detects a physical quantity of a fluid in the measurement channel, a housing forming the measurement channel, and a measurement outlet provided in the housing as a downstream end of the measurement channel. An outer peripheral surface of the housing includes an outer peripheral flat surface that extends in an arrangement direction along which an upstream end and a downstream end of the housing are arranged, and an outer peripheral inclined surface inclined with respect to the outer peripheral flat surface and provided between the upstream end and the outer peripheral flat surface in the arrangement direction. The measurement outlet is positioned upstream of the downstream end of the housing.
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公开(公告)号：US20200033201A1
公开(公告)日：2020-01-30
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：US20200003597A1
公开(公告)日：2020-01-02
申请号：US16564017
申请日：2019-09-09
Applicant: DENSO CORPORATION
Inventor： Teruaki KAIFU , Noboru KITAHARA , Kengo ITO
Abstract: An air flow rate measuring device measures an air flow rate based on an output value of a sensing unit placed in an environment that allows air to flow therethrough. The air flow rate measuring device includes: an acquisition unit configured to acquire the output value; a storage unit configured to store uneven flow information that indicates an uneven flow state of the air in the environment; a pulsation error correction unit configured to correct the air flow rate by using at least one of the uneven flow information and the output value such that the pulsation error Err in the air flow rate caused by the uneven flow becomes smaller.
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公开(公告)号：US20220349736A1
公开(公告)日：2022-11-03
申请号：US17865802
申请日：2022-07-15
Applicant: DENSO CORPORATION
Inventor： Hajime MASHITA , Noboru KITAHARA
IPC: G01F1/36
Abstract: An air flow rate measuring device is configured to measure a flow rate of air flowing through a main flow path. The air flow rate measuring device includes a housing, a board, a land portion, and an insulating portion. The housing is provided in the main flow path. The board is provided in the housing. The land portion includes multiple lands via which the board is configured to be mounted with a physical quantity sensor that is configured to detect a physical quantity of air. The insulating portion electrically insulates between the multiple lands against foreign matter or water flowing with the air.
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Patent Agency Ranking
公开(公告)号：US20200033173A1
公开(公告)日：2020-01-30
申请号：US16592942
申请日：2019-10-04
Applicant: DENSO CORPORATION
Inventor： Noboru KITAHARA
Abstract: An air flow rate measuring device for a vehicle measures an air flow rate based on an output value of a sensing unit disposed under an environment in which an air flows. The air flow rate measuring device includes a processor programmed to calculate a standard deviation from sampling data in the output value for at least one cycle of a pulsation waveform of the air, calculate a kurtosis of the pulsation waveform from the output value, estimate the pulsation error that is correlated with the standard deviation and the kurtosis, and correct the air flow rate to mitigate the pulsation error by using the pulsation error.
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公开(公告)号：US20200033171A1
公开(公告)日：2020-01-30
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：US20200033165A1
公开(公告)日：2020-01-30
申请号：US16594382
申请日：2019-10-07
Applicant: DENSO CORPORATION
Inventor： Noboru KITAHARA
Abstract: The physical quantity measurement device includes a passage flow channel, a branch flow channel, and a physical quantity detection unit. A direction along which a pair of opposing surfaces facing each other are arranged is defined as a width direction, and a direction orthogonal both to the width direction and an inflow direction of fluid through an inflow port is defined as a height direction. An inner peripheral surface of the passage flow channel includes a height narrowing surface that narrows the passage flow channel so that a height dimension of the passage flow channel along the height direction is gradually reduced toward the outflow port while reserving a parallel region extending linearly between the inflow port and the outflow port parallel to the inflow direction. The height narrowing surface is not exposed through the inflow port in the inflow direction.
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公开(公告)号：US20220170772A1
公开(公告)日：2022-06-02
申请号：US17672987
申请日：2022-02-16
Applicant: DENSO CORPORATION
Inventor： Noboru KITAHARA
Abstract: A physical quantity sensor detects a physical quantity of a fluid and a sealing resin. The physical quantity sensor is mounted on a circuit board and includes an electrode part electrically connected to the circuit board. The sealing resin is provided on a physical quantity sensor mounting surface, which is formed on the circuit board and equipped with the physical quantity sensor, and covers the electrode part. The physical quantity sensor mounting surface includes a mounting region surface including a place where the physical quantity sensor is provided and a place where the sealing resin is provided and a peripheral region surface extending around the mounting region surface. A wettability of the mounting region surface for the sealing resin in a liquid form is higher than a wettability of the peripheral region surface for the sealing resin in the liquid form.
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公开(公告)号：US20210108952A1
公开(公告)日：2021-04-15
申请号：US17132292
申请日：2020-12-23
Applicant: DENSO CORPORATION
Inventor： Noboru KITAHARA , Kengo ITO , Teruaki KAIFU , Amane HIGASHI
Abstract: A measurement control device measures an air flow rate using an output value of a sensing portion that outputs a signal according to the air flow rate, and outputs the measurement result of the air flow rate to a predetermined external device. The measurement control device includes: a pulsation state calculator that calculates a pulsation state, which is a state of pulsation generated in the air flow rate, by using the output value of the sensing portion instead of acquiring an output value from an external device; and a flow rate correcting unit that corrects the air flow rate using the pulsation state calculated by the pulsation state calculator.
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