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:
Sep. 03, 2019
Filed:
Sep. 15, 2016
Mazda Motor Corporation, Aki-gun, Hiroshima, JP;
Shin Miura, Aki-gun, JP;
Kazuhiro Nishimura, Higashihiroshima, JP;
Tomoaki Fujiyama, Iwakuni, JP;
Takuo Hirano, Higashihiroshima, JP;
Akira Suzuki, Aki-gun, JP;
Mazda Motor Corporation, Aki-gun, Hiroshima, JP;
Abstract
A control apparatus of an engine including an intake valve, an exhaust valve, and a variable valve timing mechanism for varying open and close timings of at least one of the intake and exhaust valves, is provided. The control apparatus includes a processor configured to execute a valve controlling module for performing, via the variable valve timing mechanism, a valve overlap in which the intake and exhaust valves are both opened on intake stroke of the engine, and a temperature estimating module for estimating a temperature of exhaust gas at a given location in the exhaust system by estimating a temperature increase of the exhaust gas caused by afterburn and accounting for the temperature increase, the afterburn occurring due to fresh air blowing through a cylinder of the engine to an exhaust system during the valve overlap.