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:
Jan. 28, 2014
Filed:
Aug. 04, 2009
Kazuya Ohshima, Toyota, JP;
Takahiro Anami, Toyota, JP;
Kazuhiro Yamada, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
The invention is applied to an internal combustion engine in which fuel cut control is performed. The internal combustion engine has an exhaust gas recirculation system including: an exhaust gas recirculation passage that connects an intake and exhaust passage of the engine; and an exhaust gas recirculation valve that changes a cross section of the exhaust gas recirculation passage. A correlation, which holds during a predetermined period of time immediately after fuel cut control is stopped, between engine rotation speed NE and an index value indicating the amount of burned gas contained in the recirculated exhaust gas that passes through the exhaust gas recirculation valve (Sto S). The correlation is stored in an electronic control unit in advance (S). Immediately after the fuel cut control is stopped, the index value indicating the burned gas amount is computed from the correlation stored in the electronic control unit based on the engine rotation speed NE.