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. 05, 2016
Filed:
Jul. 11, 2013
Denso Corporation, Kariya, Aichi-pref., JP;
Toshio Nishimura, Anjo, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A fuel injection controller includes a transistor downstream of a coil of a fuel injector, two transistors applying a source voltage to an upstream of the coil, a diode refluxing an electric current to the coil from a ground, and a Zener diode provided to promptly consume the counter electromotive force generated in the coil when one of the transistors is turned OFF and the transistor is turned OFF, after an injector-drive-period of the fuel injector is terminated. When a microcomputer measures an injector current 'I' decreasing from a time of the termination of an injector-drive-period, a drive control circuit delays an OFF time of the transistor relative to a time of a termination of an injector-drive-period, whereby the injector current 'I' decreases gradually.