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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.:

US 10718290 B1

PDFFull Text
Date of Patent:
Jul. 21, 2020

Filed:

Jun. 14, 2016

Device for controlling fuel injection in internal combustion engine

Applicant:

Denso Corporation, Kariya, Aichi-pref., JP;

Inventors:

Naoki Yoshiume, Kariya, JP;

Makoto Tanaka, Kariya, JP;

Keisuke Yanoto, Kariya, JP;

Kosuke Nakano, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Hung Q Nguyen

Assistant Examiner:

Susan E Scharpf

Int. Cl.
CPC ...
F02D 41/40 (2006.01); F02D 41/20 (2006.01); F02M 51/06 (2006.01); F02D 41/34 (2006.01); F01N 3/36 (2006.01); F02M 61/10 (2006.01); F02D 41/24 (2006.01); F02D 41/14 (2006.01); F02D 41/02 (2006.01); F01N 3/10 (2006.01);
U.S. Cl.
CPC ...
F02D 41/403 (2013.01); F01N 3/36 (2013.01); F02D 41/0255 (2013.01); F02D 41/1454 (2013.01); F02D 41/1486 (2013.01); F02D 41/20 (2013.01); F02D 41/2467 (2013.01); F02D 41/34 (2013.01); F02D 41/405 (2013.01); F02M 51/06 (2013.01); F02M 61/10 (2013.01); F01N 3/101 (2013.01); F02D 2041/2051 (2013.01); F02D 2041/2055 (2013.01); F02D 2041/2058 (2013.01); Y02T 10/22 (2013.01); Y02T 10/44 (2013.01);
Abstract

A control device for controlling a fuel injection in an internal combustion engine provided with a fuel injection valve has a driving portion supplying an electric power to a terminal of the fuel injection valve so as to drive the fuel injection valve to be opened; a current detecting portion detecting a drive current flowing through the fuel injection valve when the fuel injection valve is driven to be opened; a voltage detecting portion detecting a terminal voltage of the terminal of the fuel injection valve; a correction portion correcting the electric power supplied by the driving portion so that an actual value of the drive current detected by the current detecting portion agrees with a target value; a valve close detecting portion detecting a valve closing timing of the fuel injection valve based on the terminal voltage detected by the voltage detecting portion in a condition where the electric power supplied by the driving portion is corrected by the correction portion.

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