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:
Jul. 08, 2008
Filed:
Sep. 09, 2005
Mamoru Yoshioka, Susono, JP;
Yasuyuki Takama, Gotemba, JP;
Mamoru Yoshioka, Susono, JP;
Yasuyuki Takama, Gotemba, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
The valve timing is changed to increase the internal EGR amount the moment a fuel cut process begins (FIG.C). Before a sufficient amount of internal EGR is obtained, control is exercised so that the throttle-opening angle TA is larger than a basic idle-opening angle TA. When a sufficient amount of internal EGR is obtained, control is exercised so that the throttle-opening angle TA is smaller than the basic idle-opening angle TA(FIG.D). The increase in the internal EGR amount is rendered smaller during fuel cut at a low rotation speed than during fuel cut at a high rotation speed. In addition, the amount of decrease in the throttle-opening angle TA is rendered smaller during fuel cut at a low rotation speed than during fuel cut at a high rotation speed.