The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2020
Filed:
Jul. 27, 2016
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Ryo Sato, Hitachinaka, JP;
Masahiro Matsumoto, Tokyo, JP;
Satoshi Asano, Tokyo, JP;
Akira Kotabe, Hitachinaka, JP;
Kazunori Suzuki, Hitachinaka, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka-shi, JP;
Abstract
Provided is an airflow meter with good precision. In the airflow meter, which is provided with an arithmetic circuit that incorporates air temperature and a sensor module temperature as adjustment elements for the output characteristics of the airflow meter, corrects the output characteristics in accordance with the temperature difference between the air temperature and the sensor module temperature and reduces the correction amount when the absolute value of the difference between the air temperature and the sensor module temperature is small.