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. 11, 2017
Filed:
Dec. 02, 2011
Applicant:
Naoyuki Yamada, Kariya, JP;
Inventor:
Naoyuki Yamada, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/40 (2006.01); F02D 41/24 (2006.01); F02M 47/02 (2006.01); F02M 57/00 (2006.01);
U.S. Cl.
CPC ...
F02D 41/402 (2013.01); F02D 41/2467 (2013.01); F02D 2200/0602 (2013.01); F02D 2250/04 (2013.01); F02M 47/027 (2013.01); F02M 57/005 (2013.01); Y02T 10/44 (2013.01);
Abstract
A waveform detector detects a variation in fuel pressure based on a detection value of a fuel pressure sensor as a fuel pressure waveform. A determining portion determines whether an interval between injections is zero or smaller than a predetermined value based on the detected fuel pressure waveform when multi-step-injection is performed. A correcting portion corrects an injection command signal indicative of an injection start timing and an injection end timing corresponding to a target injection state in a manner that the interval is increased when the interval is determined to be zero or smaller than the predetermined value.