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. 10, 1998
Filed:
Aug. 23, 1996
Applicant:
Inventors:
Y Ron Xu, Vernon Hills, IL (US);
William B Rush, Antioch, IL (US);
Assignee:
Outboard Marine Corporation, Waukegan, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 2331 ;
Abstract
Methods and apparatus for determining and assessing the accuracy of exhaust gas measurements using the total emission method is provided which allows for virtually real-time determination of the presence of a source of inaccuracy in the total emission measurement, thereby notifying an operator to interrupt the test prior to its completion to search out the source of the inaccuracy. In accordance with one aspect of the present invention, the measured total hydrocarbons are treated as unburned fuel (C.sub.8 basis) plus burning zone hydrocarbons (C.sub.1 basis).