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. 28, 1987
Filed:
Jun. 27, 1985
Masaharu Asano, Fujisawa, JP;
Nissan Motor Company, Limited, Kanagawa, JP;
Abstract
A system and method for controlling an ignition timing of an internal combustion engine. In the system, an accumulated value of a deviation or a value corelative to the accumulated value is calculated as an error amount whenever the deviation between a crank angle value at a time when pressure in a combustion chamber has reached its maximum and a target value thereof, whether the error amount exceeds a predetermined allowable limit value is determined whether the error amount is calculated, a corrective amount of ignition timing is calculated when the error amount exceeds the predetermined allowable limit value. Consequently, the correction of ignition timing can be carried out in a quick response during the ransient driving state of engine and engine drivability can be improved.