Power plants – Internal combustion engine with treatment or handling of... – Methods
Reexamination Certificate
2005-09-15
2009-02-03
Tran, Binh Q. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
Methods
C060S277000, C060S285000, C060S295000, C060S297000, C714S001000, C714SE11020, C702S081000, C702S084000, C702S179000, C702S180000
Reexamination Certificate
active
07484357
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.
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Dollmeyer Thomas A.
Shook Patrick J.
Wills J. Steve
Wills Joan
Cummins, Inc
Kunzler & McKenzie
Tran Binh Q.
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