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:
Dec. 17, 2013
Filed:
Feb. 11, 2009
Isao Takagi, Okazaki, JP;
Isao Takagi, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
When an abnormality determining process is cancelled when a fuel cut is stopped, an EGR valve (), which is open wider than normal from the process, is returned to its original opening amount (i.e., fully closed), and fuel injection in an engine () is resumed. However, during execution of the abnormality determining process, an EGR passage () is full of air. Also, when the EGR valve () is returned to the fully closed state, there is a response delay in the change in the flowrate of air that flows from the EGR passage () into the air passage () following that return, such that excess air flows into the air passage (). As a result, the intake air amount of the engine () becomes excessive for the fuel injection quantity after fuel injection resumes. The fuel injection quantity is thus increase corrected to inhibit this from happening.