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. 18, 2022
Filed:
Feb. 15, 2022
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Shunichi Tsutsuji, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An EGR valve deterioration degree calculation system configured to calculate a degree of deterioration of an EGR valve includes an execution device. The execution device is configured to perform: a pressure acquisition process; a pressure change amount calculation process of calculating a pressure change amount associated with an operation of opening and closing the EGR valve; a differential pressure calculation process of calculating a differential pressure between an upstream side of the EGR valve and a downstream side of the EGR valve when the EGR valve is in a closed state; and a deterioration degree calculation process of calculating the degree of deterioration of the EGR valve based on the pressure change amount and the differential pressure.
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