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:
Jan. 19, 2010
Filed:
Sep. 06, 2004
Yasushi Osaku, Ageo, JP;
Toshio Kondou, Ageo, JP;
Kiyoshi Fukuda, Ageo, JP;
Nissan Diesel Motor Co., Ltd., Ageo-shi, JP;
Abstract
Subject To enable an appropriate operation of an exhaust gas purifying apparatus which uses urea or the like as a reducing agent, and further, to enable the stable concentration detection and the stable supply of the reducing agent during the cold months and also to prevent the generation of ammonia series gas during the severe hot months. Means for solving the Subject An exhaust gas purifying apparatus in an engineis for supplying the urea water in a storage tankto a reduction catalystdisposed in an exhaust system. In this exhaust gas purifying apparatus, a concentration detecting deviceis disposed in the storage tank, and the detected concentration of the urea water is adopted as basic information for the supply control of the reducing agent. Further, a heating device heating the reducing agent in the storage tankand a cooling device cooling this reducing agent are disposed, to heat, preferably, the reducing agent in the vicinity of a detecting sectionof the concentration detecting deviceand the reducing agent in the vicinity of an inlet portof a supply pipe