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:
Nov. 11, 2003
Filed:
Feb. 22, 2002
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
When an engine operates in a low and medium load area and in a low and medium speed area, the combustion mode is established to a compression ignition combustion and when the engine operates in other load and speed areas, the combustion mode is established to a spark ignition combustion. Further, when the compression ignition combustion is performed, the mixture is stratified in the combustion chamber and an ultra lean combustion is realized. As a result, both NOx reduction in an ultra lean condition and HC/CO reduction in an oxidation atmosphere can be obtained. On the other hand, when the spark ignition combustion is performed, a normal feedback control of air-fuel ratio activates a three-way catalyst to reduce HC, CO and NOx simultaneously.