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. 06, 2009
Filed:
Jun. 06, 2007
Kouichi Sugiyama, Chiryu, JP;
Kouichi Sugiyama, Chiryu, JP;
Denso Corporation, , JP;
Abstract
A fuel injection controller performs minute injection amount learning for learning an injection characteristic of an injector related to a minute amount injection such as a pilot injection by performing n-times of injections of fuel amounts obtained by equally dividing a fuel injection amount required during idle rotation speed control. The controller performs relative injection amount learning for learning a variation in the injection characteristics among cylinders based on a correlation between output torque of an engine and the injection amount when the injections of the equally-divided fuel amounts are not performed. Learning areas of the minute amount injection learning and the relative injection amount learning are defined by the injection amount and fuel pressure such that the learning areas do not interfere with each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile