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:
Dec. 28, 2010
Filed:
Aug. 30, 2006
Kunihiko Inoue, Osaka, JP;
Toru Takemoto, Osaka, JP;
Kunihiko Inoue, Osaka, JP;
Toru Takemoto, Osaka, JP;
Yanmar Co., Ltd., Osaka-shi, Osaka, JP;
Abstract
A spark ignition engine capable of operating even with a leaner air-fuel mixture to achieve stable ignition and combustion performance. An ignition plug is fitted to a cylinder head through a sleeve, and the ignition electrode of the ignition plug is disposed in a cylinder, facing a single chamber type combustion chamber. The sleeve is formed in a blind cylindrical shape, an auxiliary chamber storing the ignition electrodes of the ignition plug is formed at the bottom part of the sleeve, and a nozzle hole allowing the auxiliary chamber to communicate with the combustion chamber is formed in the bottom part of the sleeve. The bottom part of the sleeve is projected from an explosion surface to the inside of the combustion chamber and the position of ignition by the ignition electrode is set near the explosion surface.