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:
Jan. 16, 2007
Filed:
Jul. 12, 2005
Shizuo Sasaki, San Antonio, TX (US);
Junmin Wang, San Antonio, TX (US);
Gary D Neely, San Antonio, TX (US);
Shizuo Sasaki, San Antonio, TX (US);
Junmin Wang, San Antonio, TX (US);
Gary D Neely, San Antonio, TX (US);
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A control system for an internal combustion engine, which is capable of optimally controlling fuel injection by an injector even in a transient state of the engine. An ECUof the engine provided with an EGR system () controls the amount (Fa) of air drawn into cylinders () via an intake system (). An air flow sensor () detects the intake air amount (Fa). The ECUestimates a flow rate (Fe_hat) of EGR gases according to response delay of recirculation of the EGR gases by the EGR system (), estimates the amount (mo) of oxygen existing in the cylinder (), based on the detected intake air amount (Fa) and the estimated flow rate (Fe_hat) of the EGR gases, determines a fuel injection parameter (Q*) based on the engine speed (Ne) and the estimated in-cylinder oxygen amount (mo), and controls an injector () based on the determined fuel injection parameter (Q*).