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. 03, 2009
Filed:
Sep. 15, 2005
Thomas A. Dollmeyer, Columbus, IN (US);
Patrick J. Shook, Franklin, IN (US);
J. Steve Wills, Columbus, IN (US);
Joan Wills, Nashville, IN (US);
Thomas A. Dollmeyer, Columbus, IN (US);
Patrick J. Shook, Franklin, IN (US);
J. Steve Wills, Columbus, IN (US);
Joan Wills, Nashville, IN (US);
Cummins, Inc, Columbus, IN (US);
Abstract
An apparatus, system, and method are disclosed for determining the reliability of an estimate such as particulate accumulation on a diesel particulate filter, weighing the estimate according to a function of its reliability, weighing a prediction of particulate accumulation on the filter according to a function of the estimate's reliability, and combining the weighted estimate and weighted prediction to determine a combined particulate load estimate. The degree of reliability can be expressed as a trust factor, and a function of the trust factor can be used in a low-pass filter of the estimate. The trust factor value depends on filter air flow and particulate distribution in one embodiment. Regeneration of the particulate filter may be initiated depending on the value of the combined particulate load estimate.