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. 08, 1998
Filed:
Nov. 09, 1995
Applicant:
Inventors:
Yoshiharu Ito, Nagoya, JP;
Keishi Asano, Nagoya, JP;
Assignee:
Toho Gas Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G / ; G01L / ;
U.S. Cl.
CPC ...
701111 ; 701101 ; 701102 ; 701110 ; 731173 ; 731172 ; 73115 ;
Abstract
An apparatus detects trouble states in a gas engine in which the exhaust gas pressure after combustion in each cylinder is measured by a pressure sensor installed on a collecting exhaust pipe. An average value of the exhaust pressure, a standard deviation and a fluctuation values of the average value in each cylinder is calculated. Based on the calculated data, it is specified whether the trouble occurring in the gas engine corresponds to a misfire, a leakage in the inlet value or a leakage in the outlet valve, as well as which cylinder is the cause of the problem.