Patent · US Active

Method for diagnosing a particle filter of a motor vehicle using a particle sensor connected downstream

US11066972B2 · kind B2 · utility

0Cited by

0References

15Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Gerd Hartmann · Solingen, DE
Markus Eitel · Farmington Hills, US
Steve Kautzschmann · Heubach, DE

Key dates

Filing date	Jan 24, 2020
Grant date	Jul 20, 2021
Priority date	—
Expiry date	Jan 24, 2040

Classification

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

Abstract

In a method for diagnosing a particle filter of a motor vehicle a particle sensor which is connected downstream and has a ceramic sensor element is used, wherein, for the particle sensor, regeneration (10) of the ceramic sensor element is provided by thermal heating to a specific temperature and for a specific time after the start of the motor vehicle. Within the scope of an on-board diagnosis a confirmed diagnosis result is output after a repeated occurrence of a first diagnosis result. In the proposed method reduced regeneration (40) of the ceramic sensor element takes place after a first diagnosis result (30).

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