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.

Date of Patent:
Feb. 11, 2020

Filed:

Oct. 31, 2018
Applicant:

Honda Motor Co., Ltd., Tokyo, JP;

Inventors:

Masatoshi Nakajima, Wako, JP;

Yujiro Tsutsumi, Wako, JP;

Junya Iino, Wako, JP;

Kentaro Miki, Wako, JP;

Toru Nakashima, Wako, JP;

Keita Kamase, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/38 (2006.01); F02D 41/12 (2006.01); F02D 41/04 (2006.01); F02D 41/18 (2006.01);
U.S. Cl.
CPC ...
F02D 41/38 (2013.01); F02D 41/12 (2013.01); F02D 41/3845 (2013.01); F02D 41/045 (2013.01); F02D 41/18 (2013.01); F02D 2041/389 (2013.01); F02D 2250/31 (2013.01);
Abstract

In the present disclosure, pressurized fuel is directly injected from a fuel injection valve into a cylinder, and a fuel pressure is controlled to a target fuel pressure. A target fuel pressure during early depressurization is calculated on the basis of a target amount of intake air that is a target load of an internal-combustion engine, a target fuel pressure during a normal state is set on the basis of an actual amount of intake air that is an actual load of the internal-combustion engine, and a lower one of the target fuel pressure during early depressurization and the target fuel pressure during a normal state is set as the target fuel pressure.


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