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:
Aug. 27, 2019
Filed:
Aug. 07, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Tomokazu Makino, Tokyo, JP;
Toru Tanaka, Tokyo, JP;
Osamu Maeda, Tokyo, JP;
Hideki Hagari, Tokyo, JP;
Hiroyuki Fukuyama, Hyogo, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Abstract
A target injector valve opening period is calculated based on a target fuel injection amount, and an injector () is controlled by a current supply control unit () in accordance with an injector drive period acquired based on the target injector valve opening period. An actual valve closing delay period is calculated based on a drive waveform of the injector () at this time, and a difference between an actual valve closing delay period and a valve closing delay period calculated from a target injector valve opening period is learned. Then, the injector drive period is corrected by feedback control using a result of this learning.