Apparatus, system, and method for determining and implementing estimate reliability
US7484357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2005 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Oct 16, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.