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:
Feb. 16, 2016
Filed:
Mar. 31, 2011
Michiyasu Ishida, Tokyo, JP;
Minoru Esaki, Tokyo, JP;
Michiyasu Ishida, Tokyo, JP;
Minoru Esaki, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
It is an object of the invention to achieve a stable idling revolution speed in a short time and to prevent easily the occurrence of abnormal combustion, misfire, or the like by effectively controlling a gas flow rate adjustment valve even in a case where a fuel gas which tends to fluctuate in fuel gas concentration, as represented by a coal mine gas, is used. The invention includes a revolution speed detection partdetecting the revolution speed of a gas engine, a gas concentration detection unitdetecting the gas concentration of a fuel gas, a gas flow rate adjustment valvedisposed in a fuel gas pipelinesupplying a fuel gas to the gas engine, a governor actuatorfor operating the gas flow rate adjustment valve, and an operation amount computation partcomputing the operation amount of the governor actuatoraccording to the gas concentration of the fuel gas detected by the gas concentration detection unit; and a governor controlleroperating the governor actuatorbased on the operation amount computed by the operation amount computation partis further provided.