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:
Sep. 05, 2017
Filed:
Jun. 20, 2013
Denso Corporation, Kariya, Aichi-pref., JP;
Toshio Nishimura, Anjo, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
In a fuel injection control apparatus, an injector is driven to open its valve by supplying a coil of the injector with a current during a high-level period of a power supply command signal outputted from a microcomputer. A valve-closing time of the injector is detected based on a coil current, which decreases from a fall time of the power supply command signal. By comparing the coil current with plural equally-divided comparison threshold values by comparators, times are detected when the coil current decreases to the comparison threshold values, respectively. The valve-closing time is detected based on time differences among the detected times.