Patent · US Active

Method for diagnosing a differential pressure sensor situated in an air duct of an internal combustion engine

US9470600B2 · kind B2 · utility

0Cited by

2References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Soenke Mannal · Pfalzgrafenweiler, DE
Berthold Burk · Bietigheim-Bissingen, DE
Horst Mueller · Rio Rancho, US
Michael Bachner · Stuttgart, DE

Key dates

Filing date	Jul 8, 2013
Grant date	Oct 18, 2016
Priority date	—
Expiry date	Jul 8, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M26/49
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for diagnosing a differential pressure sensor situated in an air duct of an internal combustion engine, including: selecting a tolerance range for an output signal of the differential pressure sensor, within which a predetermined pressure difference is to be interpreted; and ignoring an error, in which the output signal of the differential pressure sensor falls out of the tolerance range, if, first of all, a predetermined operating situation prevails, in which the predetermined pressure difference is considered to be applied to the differential pressure sensor, and secondly, a disturbance pressure is detected in the air duct.

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