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. 29, 2015
Filed:
Nov. 28, 2012
Applicant:
Hino Motors, Ltd., Hino-shi, JP;
Inventors:
Assignee:
HINO MOTORS, LTD., Hino-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/10 (2006.01); F01N 3/20 (2006.01); F01N 11/00 (2006.01);
U.S. Cl.
CPC ...
F01N 3/208 (2013.01); F01N 11/00 (2013.01); F01N 2550/05 (2013.01); F01N 2610/02 (2013.01); F01N 2610/144 (2013.01); F01N 2610/146 (2013.01); F01N 2900/1808 (2013.01); Y02T 10/24 (2013.01); Y02T 10/47 (2013.01);
Abstract
Disclosed is a control method for restoring temporary malfunction of an injectorfor adding urea waterinto exhaust gas due to adhesion of urea crystals. A passage is laid out such that the passage (suction line) for feed of the urea waterruns downward from above of and is connected to the injector. When the injectoris determined to be in malfunction, an operation of temporarily sucking back the urea waterin the passage (suction line) is interposed before the pumpis stopped; the pumpis restarted after lapse of a predetermined time to re-determine whether the injectoris in malfunction or not.