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:
Oct. 04, 2022
Filed:
Jan. 26, 2021
Applicant:
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Inventor:
Yoshiya Yamashita, Toyota, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/06 (2006.01); F02D 41/00 (2006.01);
U.S. Cl.
CPC ...
G01M 15/06 (2013.01); F02D 41/009 (2013.01); F02D 2200/101 (2013.01);
Abstract
A specific sound having a higher frequency than an operation sound of an engine is generated in synchronization with timing of a top dead center of a specific cylinder of the engine. Thus, timing of a noise of the engine is estimated by using, for example, a deviation in time between timing of generation of a specific sound and timing at which a noise occurs in the engine, based on a sound collected from around the engine without directly using a signal of a crank angle of the engine.