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:
Jul. 08, 2014
Applicant:
Hino Motors, Ltd., Hino-shi, JP;
Inventor:
Munechika Tsutsumi, Tokyo, JP;
Assignee:
HINO MOTORS, LTD., Hino-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01N 11/00 (2006.01); F01N 3/36 (2006.01); F01N 3/025 (2006.01); F01N 9/00 (2006.01);
U.S. Cl.
CPC ...
F01N 11/00 (2013.01); F01N 3/0253 (2013.01); F01N 3/36 (2013.01); F01N 9/002 (2013.01); F01N 2550/04 (2013.01); F01N 2550/05 (2013.01); F01N 2610/03 (2013.01); F01N 2900/1808 (2013.01); Y02T 10/47 (2013.01);
Abstract
A controller recognizes that fuel is and is not actually injected when an amplitude of fuel pressure fluctuations detected by a pressure sensor is not less than and is less than a pressure threshold α, respectively, to obtain a number N of actual fuel injections and determines that a fuel addition valve operates normally and has malfunction when a ratio (N/S) of the obtained numbers N of the actual fuel injections to a number S of the fuel injection commands is not less than and is less than a number ratio threshold β, respectively.