Patent · US Active

Method and device for regenerating a particle filter

US9080486B2 · kind B2 · utility

1Cited by

2References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Michael Frank · Bretten, DE
Klaus Winkler · Rutesheim, DE
Andreas Kufferath · Besigheim, DE
Dimitrios Stavrianos · Stuttgart, DE

Key dates

Filing date	Jul 15, 2011
Grant date	Jul 14, 2015
Priority date	—
Expiry date	Apr 15, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method and device for monitoring and controlling the regeneration of a particle filter in an exhaust gas duct of an internal combustion engine which has a three-way catalytic converter downstream of the particle filter, wherein the particle filter is regenerated by oxidative burning of the particles during a regeneration phase, wherein oxygen consumption is balanced, directly or indirectly, during the regeneration phase via the temporal variation of a first signal of a first lambda probe, which is arranged upstream of the particle filter, in comparison to the temporal variation of a second signal of a second lambda probe, which is arranged downstream of the particle filter. A lambda value of λ=1 is set downstream of the three-way catalytic converter during the regeneration of the particle filter by means of lambda control and the second lambda probe which is arranged downstream of the three-way catalytic converter.

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