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:
Aug. 10, 1999
Filed:
Sep. 25, 1998
Applicant:
Inventors:
Klaus Wenzlawski, Nurnberg, DE;
Arno Friedrich, Regensburg, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02D / ;
U.S. Cl.
CPC ...
123479 ; 7311 / ; 12340614 ; 123481 ;
Abstract
A method for detecting irregular combustion processes in a multicylinder diesel internal combustion engine includes detecting incorrect injections and non-injections by recording combustion noise in individual cylinders through the use of one or more structure-borne noise sensors. Subsequently, a check is performed as to whether or not sensor signals exceed threshold values individual to each cylinder within or outside fixed measurement windows.