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. 04, 2006
Filed:
Feb. 15, 2005
Takahiro Yoshino, Yokosuka, JP;
Yuji Sasaki, Yokohama, JP;
Hatsuo Nagaishi, Zushi, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An internal combustion engine () causes an air/fuel mixture in a cylinder to combust due to ignition by a spark plug (). An engine controller () calculates an ignition delay of the gas in the cylinder on the basis of an operational state of the engine ()(), and it calculates a knock generation index which is an indicator of the occurrence of knock on the basis of the ignition delay (). The controller () calculates a limit ignition timing at which knock is not generated, on the basis of the knock generation index (), and by controlling the ignition timing of the spark plug () to the limit ignition timing (), appropriate control of the ignition timing is achieved by means of a small number of adaptation steps.