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:
Jun. 19, 2012
Filed:
Oct. 31, 2008
Tomoyuki Kogo, Gotenba, JP;
Terutoshi Tomoda, Mishima, JP;
Shinobu Ishiyama, Numazu, JP;
Tomoyuki Ono, Sunto-gun, JP;
Koichiro Nakatani, Mishima, JP;
Katsuhiro Ito, Mishima, JP;
Masayoshi Nakagawa, Gotenba, JP;
Yoshihiro Hisataka, Fujinomiya, JP;
Tomoyuki Kogo, Gotenba, JP;
Terutoshi Tomoda, Mishima, JP;
Shinobu Ishiyama, Numazu, JP;
Tomoyuki Ono, Sunto-gun, JP;
Koichiro Nakatani, Mishima, JP;
Katsuhiro Ito, Mishima, JP;
Masayoshi Nakagawa, Gotenba, JP;
Yoshihiro Hisataka, Fujinomiya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An internal combustion engine control apparatus that prevents an abrupt change in the air amount at the time of supercharger switching. The control apparatus enters a small turbo operating state in which a small turbocharger is mainly operative, during relatively low-rotation-speed and low-load side, and enters a large turbo operating state in which a large turbocharger is mainly operative, in a relatively high-rotation-speed and high-load. In the small turbo operating state, the control apparatus can exercise charging efficiency enhancement control by using a scavenging effect. Before switching from the small turbo operating state to the large turbo operating state, the control apparatus predicts whether the large turbocharger will build up its boost pressure quickly or slowly. When slow boost pressure is predicted, the control apparatus exercises charging efficiency enhancement control to provide a low degree of charging efficiency enhancement.