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:
Jun. 23, 1998
Filed:
Jan. 18, 1996
Kimihiro Nonaka, Hamamatsu, JP;
Sanshin Kogyo Kabushiki Kaisha, Hamamatsu, JP;
Abstract
A feedback control system for an internal combustion engine and in the illustrated embodiment an outboard motor. In order to maintain the desired air-fuel ratio, a air-fuel ratio sensor is employed and changes the air-fuel ratio to maintain the desired air-fuel ratio through a feedback control system. In order to minimize fluctuations in engine speed during changes in air-fuel ratio, the timing of the firing of the spark plugs of the engine is varied. The amount of adjustment in spark timing depends on one or more of a variety of parameters, such as engine speed, engine intake air flow, and exhaust system back pressure. In addition, at least one cylinder may be adjusted differently from the other cylinders to compensate for the different conditions existent in the cylinders.