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:
Nov. 10, 2015
Filed:
Oct. 26, 2011
Seiichiro Irie, Wako, JP;
Hiroshi Kubo, Wako, JP;
Yoshitomo Kono, Wako, JP;
Hiroaki Tone, Wako, JP;
Toshifumi Hiraboshi, Wako, JP;
Junpei Yamamoto, Wako, JP;
Hirotaka Komatsu, Wako, JP;
Seiichiro Irie, Wako, JP;
Hiroshi Kubo, Wako, JP;
Yoshitomo Kono, Wako, JP;
Hiroaki Tone, Wako, JP;
Toshifumi Hiraboshi, Wako, JP;
Junpei Yamamoto, Wako, JP;
Hirotaka Komatsu, Wako, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine is provided. A wide-open intake air amount, which is an intake air amount corresponding to a state where the throttle valve is fully opened, is calculated according to the engine rotational speed, and a theoretical intake air amount, which is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine, is calculated according to the wide-open intake air amount and the intake pressure. An intake air amount of the engine is detected or estimated, and an amount of the evaporative fuel/air mixture supplied through the evaporative fuel passage to the intake passage is calculated. An intake gas amount is calculated by correcting the intake air amount using the evaporative fuel/air mixture amount, and an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the intake gas amount. The engine is controlled using the calculated exhaust gas recirculation ratio.