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:
May. 06, 2008
Filed:
Apr. 06, 2006
Tang-wei Kuo, Troy, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
James A. Eng, Troy, MI (US);
Rodney B. Rask, Grosse Pointe Woods, MI (US);
Orgun A. Guralp, Ann Arbor, MI (US);
Zoran S. Filipi, Ann Arbor, MI (US);
Dionissios N. Assanis, Ann Arbor, MI (US);
Mark A. Hoffman, Ann Arbor, MI (US);
Tang-Wei Kuo, Troy, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
James A. Eng, Troy, MI (US);
Rodney B. Rask, Grosse Pointe Woods, MI (US);
Orgun A. Guralp, Ann Arbor, MI (US);
Zoran S. Filipi, Ann Arbor, MI (US);
Dionissios N. Assanis, Ann Arbor, MI (US);
Mark A. Hoffman, Ann Arbor, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
University of Michigan, Ann Arbor, MI (US);
Abstract
A control system and method to dynamically determine a parametric value for combustion chamber deposits (CCD), e.g. in a controlled auto-ignition engine, including in-situ evaluation of thickness of CCD, based on a sensor which monitors combustion. It includes a temperature sensor operative to monitor the combustion chamber, and a CCD parameter that is based upon a peak combustion temperature measured at a crank angle. A CCD parameter can also be determined utilizing an in-cylinder pressure monitor, wherein a combustion chamber deposit parameter is based upon crank angle location of a peak in-cylinder pressure parameter.