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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.:

US 12578091 B1

PDFFull Text
Date of Patent:
Mar. 17, 2026

Filed:

Sep. 21, 2021

Electronic control device and flow rate measurement system

Applicant:

Hitachi Astemo, Ltd., Hitachinaka, JP;

Inventors:

Hiroto Ishikawa, Hitachinaka, JP;

Kunihiko Suzuki, Hitachinaka, JP;

Assignee:

Hitachi Astemo, Ltd., Hitachinaka, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Avinash A Savani

Int. Cl.
CPC ...
F23N 5/18 (2006.01); F23L 13/02 (2006.01); F23N 3/08 (2006.01); F23N 5/24 (2006.01); F23N 5/26 (2006.01); G01F 1/696 (2006.01); G01F 1/72 (2006.01);
U.S. Cl.
CPC ...
F23N 3/085 (2013.01); F23L 13/02 (2013.01); F23N 5/184 (2013.01); F23N 5/245 (2013.01); F23N 2005/181 (2013.01); F23N 5/265 (2013.01); F23N 2221/12 (2020.01); F23N 2223/48 (2020.01); F23N 2223/52 (2020.01); F23N 2223/54 (2020.01); F23N 2235/06 (2020.01); F23N 2900/05181 (2013.01); G01F 1/6965 (2013.01); G01F 1/72 (2013.01);
Abstract

An electronic control device includes: a flow rate calculation unit that calculates a flow rate of intake air based on an output signal of a flow rate measurement device assembled to an intake pipe; a flow rate correction value calculation unit that calculates an average value, a maximum value, and a minimum value of the flow rate of the intake air, calculated by the flow rate calculation unit, during a predetermined period, and an amplitude of a signal with one or more frequencies equal to or higher than a fundamental frequency of the output signal of the flow rate measurement device and included in the output signal of the flow rate measurement device, and calculates a correction value for the flow rate of the intake air based on calculation results; and a flow rate correction unit that corrects the flow rate of the intake air based on the correction value.

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Ishikawa, Hiroto. (2026). Electronic control device and flow rate measurement system (U.S. Patent No. 12578091). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12578091

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