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. 30, 2002
Filed:
Feb. 02, 2000
Applicant:
Inventors:
Takekazu Ito, Shizuoka-ken, JP;
Shizuo Sasaki, Numazu, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 ;
U.S. Cl.
CPC ...
F01N 3/00 ;
Abstract
An exhaust gas after-treatment device arranged in an exhaust passage of an engine, which raises the temperature of the exhaust gas after-treatment device by making selective use of a first injection pattern injecting only main fuel and delaying the injection timing of the main fuel Q , a second injection pattern injecting auxiliary fuel Q near top dead center of the suction stroke and delaying the injection timing of the main fuel Q , and a third injection pattern injecting auxiliary fuel Q and Q before injection of the main fuel and after injection and delaying the injection timing of the main fuel Q .