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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：US09964422B2
公开(公告)日：2018-05-08
申请号：US14963784
申请日：2015-12-09
Applicant: DENSO CORPORATION
Inventor： Junzo Yamaguchi
CPC classification number: G01F1/684 , F02D41/18 , F02D2200/0414 , F02D2200/0418 , G01F1/6842 , G01F1/69 , G01F1/696 , G01F1/72 , G01F5/00 , G01F15/024 , G01K13/02 , G01K2013/024
Abstract: An airflow meter includes a flow rate sensor for measuring a flow rate of intake air sucked into an engine, a humidity sensor that outputs an intake air humidity signal in accordance with humidity of the intake air, an intake air temperature sensor that outputs an intake air temperature signal in accordance with temperature of the intake air, and a humidity correction section that corrects the intake air humidity signal based on the intake air temperature signal.
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公开(公告)号：US11346696B2
公开(公告)日：2022-05-31
申请号：US17317072
申请日：2021-05-11
Applicant: DENSO CORPORATION
Inventor： Junzo Yamaguchi
Abstract: A sensor SA has a flow sensor that measures a flow rate of intake air in a measurement flow path. The flow sensor has a film-shaped sensor film portion overlapped on a substrate front surface of a sensor substrate. The sensor film portion has a heat generating resistor that heats the sensor film portion and a temperature measuring resistor that measures a temperature of the sensor film portion. The heat generating resistor and the temperature measuring resistor are arranged in a depth direction Z along the substrate front surface of the sensor substrate. A length dimension LM1 of an upstream temperature measuring resistor is equal to or larger than a length dimension LM2 of a downstream temperature measuring resistor.
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公开(公告)号：US11656111B2
公开(公告)日：2023-05-23
申请号：US17150326
申请日：2021-01-15
Applicant: DENSO CORPORATION
Inventor： Hajime Mashita , Junzo Yamaguchi , Shinichi Kamiya , Akihumi Kurita
CPC classification number: G01F1/6847 , F02D41/18 , G01F15/14
Abstract: A flowmeter is configured to measure a flow rate of a gas flowing through a main passage. The flowmeter includes a housing and a flow rate detector. The housing is made of a resin and includes a bypass passage branched off from the main passage. The flow rate detector is disposed in the bypass passage and transmits detection signals in accordance with the flow rate of the gas flowing through the main passage. The housing includes a non-insulation portion including graphite.
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公开(公告)号：US11169012B2
公开(公告)日：2021-11-09
申请号：US16595692
申请日：2019-10-08
Applicant: DENSO CORPORATION
Inventor： Hajime Mashita , Junzo Yamaguchi
Abstract: A physical quantity measuring device detects a physical quantity of gas flowing in a flow passage. The physical quantity measuring device includes a sensor element that outputs a detection signal according to the physical quantity, a case that is provided to the flow passage and houses the sensor element, and a protrusion that protrudes from a passage wall surface facing the flow passage. The case includes a measurement chamber that houses the sensor element and an inflow port that is configured to cause a part of gas flowing in the flow passage to flow into the measurement chamber therethrough. The protrusion is configured to guide gas flowing along the passage wall surface toward the inflow port.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10962391B2
公开(公告)日：2021-03-30
申请号：US16267421
申请日：2019-02-05
Applicant: DENSO CORPORATION
Inventor： Takuma Tsuchiya , Junzo Yamaguchi , Takashi Enomoto , Hiroyuki Akuzawa
Abstract: A sensor body contains a sensor element in a body recess opened at a body opening. A sensor substrate has a mounting surface on which a circuit element for processing a detection signal is mounted and holds the sensor body on the mounting surface. A sensor cover has a cover window penetrating between an intake passage and the body opening and covers the sensor body. A sensor filter is interposed between the sensor body and the sensor cover. A potting resin body is cured on the mounting surface so as to seal the circuit element. The sensor cover is embedded in the potting resin body on the outer peripheral side of the sensor body.
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公开(公告)号：US09719836B2
公开(公告)日：2017-08-01
申请号：US14728469
申请日：2015-06-02
Applicant: DENSO CORPORATION
Inventor： Yasushi Kohno , Junzo Yamaguchi
CPC classification number: G01F25/0007 , F02D41/18 , F02D41/187 , F02D2200/0414 , G01F1/6842 , G01F1/6845 , G01F1/692 , G01F1/696 , G01F1/699 , G01F5/00 , G01F15/046
Abstract: A high-temperature resistance is disposed in an internal passage and has its energization controlled based on an intake-air flow rate in the passage to increase/decrease a heat generation amount. A first low-temperature resistance constitutes a bridge circuit which has its energization state changed according to the heat generation amount of the high-temperature resistance. The first low-temperature resistance varies its resistance value according to intake-air temperature. A second low-temperature resistance is an element, which is not incorporated into the bridge circuit and varies its resistance value according to intake-air temperature to increase/decrease an energization amount. The second low-temperature resistance is provided on a substrate. Another bridge circuit produces an intake air amount detection signal using an electrical signal generated by operation of the high-temperature resistance and the first low-temperature resistance. A digital circuit uses an electrical signal produced by the second low-temperature resistance as an intake temperature detection signal.
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公开(公告)号：US20150355009A1
公开(公告)日：2015-12-10
申请号：US14730525
申请日：2015-06-04
Applicant: DENSO CORPORATION
Inventor： Yasushi GOKA , Takashi Ooga , Akiyuki Sudou , Junzo Yamaguchi
IPC: G01F5/00
CPC classification number: G01F5/00 , G01F1/6842 , G01F15/00 , G01N27/223 , G01N33/00
Abstract: An airflow-rate detecting device capable of detecting humidity has a housing, a flow rate sensor, a humidity sensor, a humidity sensor case, and a dust separating portion. The housing therein defines a bypass passage into which a part of air flowing in a duct flows. The flow rate sensor is disposed in the bypass passage. The humidity sensor detects a humidity of air flowing in the duct at an outside of the housing. The humidity sensor case houses the humidity sensor and therein defines an interior space into which a part of air flowing in the duct flows as a target air of which humidity is detected by the humidity sensor. The dust separating portion removes dust from the target air before the target air flows into the interior space.
Abstract translation: 能够检测湿度的气流速度检测装置具有壳体，流量传感器，湿度传感器，湿度传感器壳体和灰尘分离部。 其中的壳体限定旁路通道，一个在管道中流动的空气的一部分流入该旁路。 流量传感器设置在旁路通路中。 湿度传感器检测在壳体外部在管道中流动的空气的湿度。 湿度传感器壳体容纳湿度传感器，并且其中限定了内部空间，一部分在管道中流动的空气作为湿度传感器检测到湿度的目标空气流动。 灰尘分离部在目标空气流入内部空间之前，从目标空气中除去灰尘。
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公开(公告)号：US11143643B2
公开(公告)日：2021-10-12
申请号：US16424618
申请日：2019-05-29
Applicant: DENSO CORPORATION
Inventor： Junzo Yamaguchi , Teruaki Kaifu
IPC: G01N33/00 , G01N27/00 , G01N27/04 , G01N27/22 , G01N27/12 , F02P5/04 , F02D41/28 , F02D41/22 , F02D41/18
Abstract: A humidity measurement device is configured to measure a humidity of a gas. The humidity measurement device includes: a second-order calculation part to calculate a second-order differential value by performing second-order differentiation by time on a humidity signal output from a humidity detection part; and an adherence determination part to determine whether a liquid has adhered to the humidity detection part based on the second-order differential value obtained by the second-order calculation part.
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公开(公告)号：US10429223B2
公开(公告)日：2019-10-01
申请号：US15231308
申请日：2016-08-08
Applicant: DENSO CORPORATION
Inventor： Takao Ban , Junzo Yamaguchi , Keisuke Itakura
Abstract: The present disclosure provides an air flow rate measuring device disposed in an intake air passage. The air flow rate measuring device measures a flow rate of the intake air flowing through the intake air passage. The air flow rate measuring device includes a casing, a flow rate sensor, and a sensor module. The casing defines a bypass passage to take in a portion of the intake air. The flow rate sensor is disposed in the bypass passage. The flow rate sensor generates an output signal according to a flow rate of the intake air. The sensor module protrudes from an outer wall of the casing. The sensor module includes a multi-sensor unit that has a relative humidity sensor and a temperature sensor. The relative humidity sensor is exposed to an inside of the intake air passage to detect a relative humidity of the intake air flowing through the intake air passage. The temperature sensor detects a temperature of the intake air flowing through the intake air passage.
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