Patent · US Expired

Method of controlling a heating device of a particle filter

US7249456B2 · kind B2 · utility

5Cited by

8References

15Claims

0Family size

Assignee

HJS Fahrezeutechnik GmbH & Co. KG · DE

Inventors

Hermann-Josef Schulte · Menden, DE
Hans-Peter Frisse · Herzogenrath, DE
Arno Schindler · Freudenberg, DE
Klaus Schrewe · Brilon, DE

Key dates

Filing date	Jun 21, 2005
Grant date	Jul 31, 2007
Priority date	—
Expiry date	Aug 7, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method of controlling the energization of a heating device for the regeneration of a particle filter disposed in the exhaust duct of an internal combustion engine, particularly a Diesel engine, wherein a measure for the soot charge state of the particle filter the exhaust gas back pressure is determined while the engine is preferably idling, the exhaust gas recirculation is switched off, and predetermined conditions are present in the exhaust gas duct upstream of the particle filter, and then an exhaust gas back pressure signal is compared with a threshold value indicating a soot charge sufficient for the initiation of a regeneration of the particle filter and the heating device is enabled for the initiation of the regeneration procedure if the exhaust gas back pressure signal is greater than the threshold value.

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