公开(公告)号：US10781775B2

公开(公告)日：2020-09-22

申请号：US15884671

申请日：2018-01-31

申请人： Hitachi Automotive Systems Americas, Inc.

发明人： Prashanth Avireddi ,  Anthony Boone ,  Frank Hunt ,  Naoki Oka ,  Zachariah Rabatah

IPC分类号： F02M35/10 ,  F02M35/02 ,  F02M35/024 ,  G01F1/684 ,  G01F1/78

摘要： In some examples, a mass airflow sensor apparatus includes a housing having a tubular bore for passage of air, with an airflow sensor disposed at least partially within the tubular bore. The airflow sensor may be configured to measure a flow rate of air flowing past the airflow sensor. A focus component may be disposed upstream of the mass airflow sensor, the focus component including a cylindrical tubular focus member suspended within the bore. Further, a nozzle may be disposed upstream of the focus component. The nozzle may include a conical inner surface angled toward a center of the bore. In addition, a grid component may be disposed upstream of the focus component. The grid component may include a mesh grid including a plurality of openings for smoothing a flow of air flowing toward the airflow sensor.