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:
Jun. 22, 2004
Filed:
Sep. 27, 2002
Applicant:
Inventors:
Yasuki Tamura, Tokyo, JP;
Kazuhito Kawashima, Tokyo, JP;
Assignee:
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 ;
U.S. Cl.
CPC ...
F01N 3/00 ;
Abstract
At the start of operation of an internal-combustion engine (S ,S ,S ), an exhaust flow is restrained (to raise the exhaust pressure) (S ), secondary air is supplied (S ), and the combustion air-fuel ratio (A/F) is set within the range of rich air-fuel ratios (S , S ).