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. 12, 1991
Filed:
Mar. 15, 1990
Noriyuki Inoue, Amagasaki, JP;
Satoru Ohkubo, Amagasaki, JP;
Toshio Iwata, Himeji, JP;
Akira Demizu, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An ignition timing controlling apparatus which calculates a crank angle when the pressure building-up rate in a cylinder of an internal combustion engine is the maximum, and feedback-controls an ignition timing so as to make the deviation value between the crank angle and the target value thereof be zero. The apparatus does not feedback-control in the predetermined running region where the crank angle at which pressure building-up rate in the cylinder at the time of light loading, idling and so on is the maximum is unstabilized, and ignites a plug at a basic ignition timing determined by running state of the engine as well as makes the gain of feedback-control differ from each other according to whether the deviation is in the advanced angle side or delayed angle side, and is capable of controlling ignition timing so that the maximum torque can be obtained regardless of elapsing change and dispersion in manufacturing.