Patent · US Active

Method and device for controlling an internal combustion engine

US9874171B2 · kind B2 · utility

12Cited by

3References

17Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Bleile · Stuttgart, DE
Wilhelm Blumendeller · Freiberg, DE
Daniel Kuhn · Düsseldorf, DE
Julian Reichel · Ditzingen, DE

Key dates

Filing date	Nov 21, 2011
Grant date	Jan 23, 2018
Priority date	—
Expiry date	Jul 19, 2036

Classification

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

Abstract

A method for diagnosing a malfunction of a sensor system in an air system of an internal combustion engine, said sensor system comprising a first air state sensor, a second air state sensor and a third air state sensor, wherein a first value and a second value of a first comparison variable are ascertained in two different ways in an overall calculation step such that the result of a comparison between the first value and the second value is a function of each of the output variables of the first, second and third air state sensors and wherein in a fault detection step, said method recognizes as a function of the comparison between said first value and said second value of the comparison variable that a fault exists in the sensor system.

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