Patent · US Expired

Method and system for evaluating a signal from a vibrationally-sensitive pressure sensor in a motor vehicle

US5353644A · kind A · utility

4Cited by

2References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rainer Frank · Sachsenheim, DE
Alfred Kratt · Schwieberdingen, DE
Manfred Mezger · Markgröningen, DE
Klaus Ries-Mueller · Bad Rappenau, DE

Key dates

Filing date	Jul 28, 1993
Grant date	Oct 11, 1994
Priority date	—
Expiry date	Jul 28, 2013

Classification

Technology area (CPC G)Physics
CPC primaryG01P15/0922
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The signal from a vibrationally-sensitive pressure sensor is both low-pass filtered and band-pass filtered. The low-pass-filtered portion is employed as a pressure-measuring signal, while the band-pass filtered portion is used as an acceleration-measuring signal. The pressure sensor is preferably installed in the tank-venting installation of a motor vehicle to measure the pressure differential relative to the surroundings. The acceleration-measuring signal is used to stop a recognition of engine misfiring, as soon as a rough road surface is recognized as a result of this signal.

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