Patent · US Active

Method for diagnosing exhaust gas sensors

US12044596B2 · kind B2 · utility

0Cited by

7References

17Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernhard Ledermann · Weil der Stadt, DE
Claudius Bevot · Stuttgart, DE
Danka Dittmer-Gobeljic · Stuttgart, DE
Oemer Kaya · Sinsheim, DE
Stefan Kremer · Leonberg, DE

Key dates

Filing date	Mar 24, 2020
Grant date	Jul 23, 2024
Priority date	—
Expiry date	May 6, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02H3/20
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An evaluation and control unit for operating a wideband lambda sensor that has at least two electrical lines, the evaluation and control unit having at least two electrical terminals for electrical connection to the electrical lines of the wideband lambda sensor. Each of the electrical terminals has assigned to it a respective electrical switch via which each terminal is capable of being individually connected to at least one defined electrical potential. Each switch is voltage-resistant against the maximum short-circuit voltage that is to be expected at the respective terminal in case of fault. In addition, a method is described for the line-specific short-circuit diagnosis of the wideband lambda sensor (pinpointing).

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