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:
Apr. 05, 2022
Filed:
Jul. 04, 2019
Applicant:
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Inventors:
Kotaro Oki, Hitachinaka, JP;
Osamu Mukaihara, Hitachinaka, JP;
Fumihiro Itaba, Hitachinaka, JP;
Akira Iizuka, Hitachinaka, JP;
Assignee:
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 41/34 (2006.01); F02D 41/20 (2006.01); F02D 41/24 (2006.01); F02D 41/28 (2006.01); F02M 51/06 (2006.01);
U.S. Cl.
CPC ...
F02D 41/34 (2013.01); F02D 41/20 (2013.01); F02D 41/247 (2013.01); F02D 2041/2055 (2013.01); F02D 2041/2058 (2013.01); F02D 2041/286 (2013.01); F02D 2200/0602 (2013.01); F02M 51/0685 (2013.01);
Abstract
Provided is a technique for identifying a variation in an injection amount by estimating a valve opening start timing in an extremely small injection region of a half lift region. Therefore, a fuel injection control device according to the present invention estimates a valve opening start timing of a fuel injection valve by referring to a characteristic of a reference fuel injection valve acquired in advance.