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:
Dec. 29, 2015
Filed:
Nov. 13, 2012
Applicant:
Isuzu Motors Limited, Tokyo, JP;
Inventors:
Assignee:
ISUZU MOTORS LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 9/00 (2006.01); F02D 21/08 (2006.01); F01N 3/08 (2006.01); F02D 41/02 (2006.01); F01N 3/20 (2006.01); F02D 9/04 (2006.01); F02D 41/00 (2006.01); B01D 53/94 (2006.01); F02D 41/18 (2006.01);
U.S. Cl.
CPC ...
F01N 9/00 (2013.01); B01D 53/9495 (2013.01); F01N 3/0842 (2013.01); F01N 3/20 (2013.01); F02D 21/08 (2013.01); F02D 41/0005 (2013.01); F02D 41/0052 (2013.01); F02D 41/0055 (2013.01); F02D 41/0275 (2013.01); B01D 53/9409 (2013.01); B01D 2251/208 (2013.01); B01D 2255/91 (2013.01); B01D 2258/012 (2013.01); F01N 2240/36 (2013.01); F01N 2560/026 (2013.01); F02D 9/04 (2013.01); F02D 41/18 (2013.01); F02D 2041/0017 (2013.01); F02D 2200/0802 (2013.01); F02D 2200/501 (2013.01); Y02T 10/42 (2013.01); Y02T 10/47 (2013.01);
Abstract
An exhaust gas purification method of a diesel engine, which purifies exhaust gas while suppressing deterioration in drivability and fuel consumption, including when exhaust gas enters a rich reduction state, opening an EGR valve and closing an intake throttle, if a temperature of an NOx occlusion reduction catalyst is at or above a predetermined temperature, and a vehicle having a diesel engine is decelerating from a speed at or above a predetermined speed, and then closing an exhaust throttle provided downstream of the NOx occlusion reduction catalyst and supplying fuel to the NOx occlusion reduction catalyst as a reductant.