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:
Feb. 18, 2003
Filed:
Aug. 30, 2001
Other;
Abstract
In a direct gasoline injection type spark igniting internal combustion engine provided with a turbocharger and a catalyst, in order to optimize an exhaust gas control, the structure is made such that an optimum exhaust gas control can be obtained only by one control valve by designing an arrangement of a pre catalyst, the turbocharger and a bypass exhaust gas passage and placing a control valve. Further, a stratified operation area is expanded by reducing a capacity of the turbocharger, shifting an actuation area to a low capacity side and corresponding to an area of a stratified combustion so as to increase an air amount in the stratified area. Accordingly, since it is possible to early warm up a main catalyst at a time of starting the engine, whereby the exhaust gas is purified, and the air amount in the stratified area is increased, the stratified area expands to a high output side and a fuel consumption is improved.