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:
Mar. 08, 2011
Filed:
Aug. 30, 2007
Tohru Nakazono, Osaka, JP;
Hiroyuki Ohtsubo, Osaka, JP;
Takayuki Shirouzu, Osaka, JP;
Yanmar Co., Ltd., Osaka-shi, JP;
Abstract
An aspect of the invention provides a method for operating a workable homogeneous charge compressed ignition engine in which a compression ignition operation is performed by spark ignition to shorten a load input time and a load cutoff time. In the homogeneous charge compressed ignition engine operating method, a mixture gas is burned by compression ignition in a combustion chamber, and fuel and air are previously mixed to produce the mixture gas. The homogeneous charge compressed ignition engine includes a spark ignition devicewhich performs spark ignition to the mixture gas. A temperature controllersubstantially keeps an intake air temperature of the mixture gas constant. A spark ignition operation, a spark-assist compression ignition operation in which spark ignition is supplementarily used, and a non-spark compression ignition operation in which the spark ignition is not used are switched according to magnitude of a load.