发明名称 |
METHOD OF MONITORING SOOT MASS IN A PARTICULATE FILTER AND MONITORING SYSTEM FOR SAME WITH CORRECTION FOR ACTIVE REGENERATION INEFFICIENCY |
摘要 |
A method of monitoring soot mass in a particulate filter of an exhaust system includes determining a pressure differential across the filter, obtaining a first soot mass estimate by fitting the determined pressure differential to a first stored database of measured or modeled pressure differentials and corresponding measured soot masses taken during filter regeneration using a substantially similar filter previously loaded following a complete filter regeneration, and obtaining a second soot mass estimate by fitting the determined pressure differential to a second stored database of measured or modeled pressure differentials and corresponding measured soot masses taken during filter regeneration using a substantially similar filter loaded following an incomplete filter regeneration. Actual soot mass is estimated by calculating a weighted sum of the first and second soot mass estimates with weighting based on operating parameters indicative of regeneration efficiency. A monitoring system for a particulate filter is also provided. |
申请公布号 |
US2012004863(A1) |
申请公布日期 |
2012.01.05 |
申请号 |
US20100829700 |
申请日期 |
2010.07.02 |
申请人 |
ARDANESE RAFFAELLO;ARDANESE MICHELANGELO;DARR REBECCA J.;JASINKIEWICZ PAUL;GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
ARDANESE RAFFAELLO;ARDANESE MICHELANGELO;DARR REBECCA J.;JASINKIEWICZ PAUL |
分类号 |
G01F1/34 |
主分类号 |
G01F1/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|