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:
Aug. 23, 2011
Filed:
Jan. 11, 2008
Hiroki Murata, Gotenba, JP;
Masahiro Nagae, Niskikamo-gun, JP;
Hajime Shimizu, Susono, JP;
Shigeki Nakayama, Susono, JP;
Tomomi Onishi, Susono, JP;
Hiroki Murata, Gotenba, JP;
Masahiro Nagae, Niskikamo-gun, JP;
Hajime Shimizu, Susono, JP;
Shigeki Nakayama, Susono, JP;
Tomomi Onishi, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
In an exhaust gas recirculation system for an internal combustion engine, which includes a turbocharger; a high-pressure EGR unit; a low-pressure EGR unit; a high-pressure EGR valve; and a low-pressure EGR valve, first, the opening amount of the high-pressure EGR valve is controlled in a feedback manner, and, then, the opening amount of a low-pressure EGR valve is controlled in a feedback manner in a transitional operation period in which the operation mode of the internal combustion engine is changing. In this way, the intake air amount is promptly adjusted to the target intake air amount without causing hunting.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile