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. 23, 1996
Filed:
Sep. 15, 1994
Kodai Yoshizawa, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A fuel delay correction under transient engine running conditions is separated into a short-term delay correction and a long-term delay correction, and the fuel injection amount is corrected by respectively applying these correction according to the engine running conditions. A basic updating amount of these corrections is computed based on the difference between an air-fuel ratio which is actually detected and a target value of the air-fuel ratio, and the basic updating amount is separated into an updating amount for the short-term delay correction and an updating amount for the long-term delay correction by an assignment factor which is based on the temperature of a part of the intake air passage to which injected fuel adheres. The respective correction amount is updated by the assigned updating amount, and stored in a memory. The fuel injection amount is thereby controlled according to the temperature of the part to which fuel adheres, and the air-fuel ratio in transient conditions is controlled to the target air-fuel ratio in a short time period.