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:
Mar. 23, 2004
Filed:
Jun. 21, 2002
Iwao Yoshida, Yokohama, JP;
Takao Maitani, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A control system for a direct-injection spark-ignition internal combustion engine is provided which includes a first control section for switchably controlling a combustion mode between a homogeneous combustion mode and a stratified stoichiometric combustion mode, and a second control section for advancing, at a time of switching from the homogeneous combustion mode to the stratified stoichiometric combustion mode, an ignition timing by an amount for offsetting a variation of torque simultaneously with switching of the combustion mode, gradually retarding the ignition timing after the switching of the combustion mode, and after the ignition timing has retarded a predetermined amount, retarding a compression stroke fuel injection timing in the stratified combustion mode while retarding the ignition timing further. A control method is also provided.