Patent · US Active

Method for diagnosing an internal combustion engine in a motor vehicle

US7971475B2 · kind B2 · utility

2Cited by

15References

23Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Marcus Schneider · Ludwigsburg, DE
Markus Becker · Paderborn, DE
Thomas Scheuerle · Murr, DE

Key dates

Filing date	Nov 20, 2007
Grant date	Jul 5, 2011
Priority date	—
Expiry date	Jan 3, 2028

Classification

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

Abstract

A method for diagnosing an internal combustion engine in a motor vehicle having at least one sensor unit, including at least one sound receiver, the sound receiver converting sound waves into an electrical signal. Sound waves of the internal combustion engine are recorded using the sound receiver of the sensor unit and converted into an electrical signal, and the electrical signal is used for the diagnosis of the operating state of the internal combustion engine.

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