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.

Date of Patent:
Jul. 22, 2003

Filed:

Sep. 12, 2001
Applicant:
Inventor:

John R Jaye, Northville, MI (US);

Assignee:

DaimlerChrysler Corporation, Auburn Hills, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 1/500 ;
U.S. Cl.
CPC ...
G01M 1/500 ;
Abstract

An engine combustion diagnostic system and method for diagnosing an engine improve combustion quality determinations. The method includes the step of linking manifold absolute pressure (MAP) to in-cylinder pressure during calibration of the engine such that a table results. A single in-cylinder pressure measurement is collected during real-time operation of the engine. The method further provides for determining combustion quality for the engine based on the real-time in-cylinder pressure measurement and the table.


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