公开(公告)号：US20200264023A1

公开(公告)日：2020-08-20

申请号：US16866680

申请日：2020-05-05

Applicant: DENSO CORPORATION

Inventor： Noboru KITAHARA

IPC: G01F1/696 ,  G01F1/69

Abstract: An air flow meter includes a processing unit measuring an air flow rate based on an output signal of a sensing unit placed in environment where air flows and outputting the air flow rate to an ECU. The processing unit includes an intake air flow rate computation unit acquiring an air flow rate based on the output signal, and an argument acquisition unit and a pulsation correction value computation unit acquiring pulsation correction information for correcting a pulsation error based on the acquired air flow rate. The processing unit also includes an air flow meter output unit outputting pulsation correction information in addition to the air flow rate to the ECU.

公开(公告)号：US20200158550A1

公开(公告)日：2020-05-21

申请号：US16749504

申请日：2020-01-22

Applicant: DENSO CORPORATION

Inventor： Junzo YAMAGUCHI ,  Noboru KITAHARA ,  Hiroshi TAGAWA ,  Masaki INOUE ,  Hajime MASHITA ,  Takashi ENOMOTO

IPC: G01F15/02 ,  G01K13/02 ,  G01F1/68 ,  G01F5/00

Abstract: An air flow meter includes an inward part that is positioned inward of an intake pipe and an outward part that is positioned not inward but outward of the intake pipe. The air flow meter further includes a first detector provided in the inward part, and a second detector provided at a position closer to the outward part than the first detector.

公开(公告)号：US20200158547A1

公开(公告)日：2020-05-21

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: G01F1/684 ,  G01F1/696 ,  G01F15/14 ,  G01F15/16 ,  G01F15/02 ,  G01F15/18 ,  F02M35/10 ,  G01K13/02

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.

公开(公告)号：US20190383655A1

公开(公告)日：2019-12-19

申请号：US16553439

申请日：2019-08-28

Applicant: DENSO CORPORATION

Inventor： Noboru KITAHARA ,  Hisato KURAMOTO

IPC: G01F1/696 ,  G01F1/12 ,  G01F1/05

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.