Patent · US Active

Exhaust system for a motor vehicle

US10132218B2 · kind B2 · utility

0Cited by

5References

10Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Paul Rodatz · Landshut, DE
Michael Nienhoff · Regensburg, DE
Tino Arlt · Regensburg, DE
Thomas Schoen · Austin, US

Key dates

Filing date	Apr 16, 2014
Grant date	Nov 20, 2018
Priority date	—
Expiry date	Apr 16, 2034

Classification

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

Abstract

The present disclosure relates to engines for a motor vehicle and some embodiments include a method for operating an exhaust train of a motor vehicle engine including: measuring a particle concentration downstream of a particle filter at a first operating point; determining the filter efficiency at the first operating point; changing operation of the engine to a second operating point to increase the particle emissions; measuring the particle concentration downstream of the filter at the second operating point; determining the filter efficiency at the second operating point; determining a difference between the efficiency levels; detecting an offset error, if the difference exceeds a defined threshold; and identifying a particle sensor as defective if an offset error is detected, rather than identifying the particle filter as defective.

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