Patent · US Active

Feedback control in selective catalytic reduction

US8034291B2 · kind B2 · utility

8Cited by

1References

24Claims

0Family size

Assignee

Cummins Filtration IP, Inc. · US

Inventors

Baohua Qi · Columbus, US
Mickey R. McDaniel · Greenwood, US
Hakeem Ogunleye · Columbus, US
Clyde W. Xi · Columbus, US
Hongbin Ma · Columbia, US

Key dates

Filing date	Jan 23, 2008
Grant date	Oct 11, 2011
Priority date	—
Expiry date	Oct 17, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An apparatus for introducing a reductant into an exhaust system is described. The apparatus includes a controller that generates a resulting dosing command used as an instruction to release an amount of reductant into the exhaust system. The controller includes a feedback control module that generates a weighing factor. The weighing factor is configured to be applied to a lower limit dosing command and configured to be applied to an upper limit dosing command, where the lower and upper limit dosing commands converted by the weighing factor are used by the controller to generate the resulting dosing command.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.