公开(公告)号：US11262223B2

公开(公告)日：2022-03-01

申请号：US17168908

申请日：2021-02-05

Applicant: DENSO CORPORATION

Inventor： Yuusuke Yoshida ,  Seiji Yaoko ,  Kazuaki Ueda ,  Kengo Ito

IPC: G01F1/684 ,  F02M35/02 ,  F02M35/10 ,  F02D41/18

Abstract: A flowmeter is inserted into a main passage through which a target fluid flows. The flowmeter includes a housing, a sub passage, an inlet portion, an outlet portion, a flow rate detector, and a protrusion. The housing includes a side surface and a tip end surface. A part of the target fluid flows into the sub passage from the main passage. The target fluid flows into the sub passage through the inlet portion and flows out of the sub passage through the outlet portion. The flow rate detector is configured to detect a flow rate of the target fluid flowing through the sub passage. The tip end surface includes a first end area and a second end area. The protrusion protrudes from the tip end surface and is located in both the first end area and the second end area.