Patent · US Active

System and method for regenerating an auxiliary power unit exhaust filter

US8776502B2 · kind B2 · utility

3Cited by

37References

20Claims

0Family size

Assignee

Donaldson Company, Inc. · US

Inventors

John Hiemstra · Lakeville, US
Eivind Stenersen · River Falls, US
Wenzhong Zhang · Houston, US
Allan T. Hovda · Savage, US
Gary Dale Reeves · Lakeville, US
Josh Kundert · Rosemount, US
Wayne M. Wagner · Apple Valley, US
Todd R. Taubert · Okabena, US

Key dates

Filing date	Jul 1, 2009
Grant date	Jul 15, 2014
Priority date	—
Expiry date	Jun 2, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

This disclosure relates to a method for controlling a system for regenerating a diesel particulate filter. The method includes monitoring an engine run time that has lapsed since a previous regeneration event. The method also includes monitoring backpressure behind the diesel particulate filter. The method further includes triggering a regeneration flag if the engine run time that lapsed since the previous regeneration event reaches a predetermined time limit and the backpressure exceeds a minimum value.

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