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:
Nov. 20, 2012
Filed:
Aug. 06, 2008
Koichiro Nakatani, Mishima, JP;
Terutoshi Tomoda, Mishima, JP;
Shinobu Ishiyama, Numazu, JP;
Tomoyuki Ono, Sunto-gun, JP;
Tomoyuki Kogo, Gotenba, JP;
Yoshihiro Hisataka, Fujinomiya, JP;
Koichiro Nakatani, Mishima, JP;
Terutoshi Tomoda, Mishima, JP;
Shinobu Ishiyama, Numazu, JP;
Tomoyuki Ono, Sunto-gun, JP;
Tomoyuki Kogo, Gotenba, JP;
Yoshihiro Hisataka, Fujinomiya, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A control apparatus for an internal combustion engine () includes intake valve control means (). The internal combustion engine () includes a variable intake valve operating mechanism () that changes a valve opening characteristic of an intake valve (), and rich combustion is performed in the internal combustion engine () to control an exhaust gas purification catalyst () disposed in an exhaust passage (). The intake valve control means () controls the valve opening characteristic of the intake valve () to increase a flow rate of intake air in an early stage of an intake stroke when the rich combustion is performed, as compared to when non-rich combustion is performed.