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:
May. 10, 2016
Filed:
Apr. 26, 2013
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Shigemasa Shimojo, Atsugi, JP;
Masayuki Tani, Atsugi, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
Abstract
The first target A/F directing toward a richer side from the initial target A/F to the theoretical A/F is calculated; and the first estimated catalyst's oxygen amount is calculated based on the detected A/F and the theoretical A/F. Until the first estimated catalyst's oxygen amount reaches the first target catalyst's oxygen amount, calculations of the first target A/F and of the first estimated catalyst's oxygen amount continue. After the first estimated catalyst's oxygen amount reaches the first target catalyst's oxygen amount, the second target A/F directing toward a richer side from the theoretical A/F to the final target A/F is calculated; and the second estimated catalyst's oxygen amount is calculated based on the detected A/F and the final target A/F. Until the second estimated catalyst's oxygen amount reaches the second target catalyst's oxygen amount, calculations of the second target A/F and of the second estimated catalyst's oxygen amount continue.