Patent · US Expired

Device for measuring the mass of a flowing medium

US5918279A · kind A · utility

21Cited by

8References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Hans Hecht · Stuttgart, DE
Heinz Rilling · Eberdingen, DE
Dieter Tank · Kornwestheim, DE
Uwe Konzelmann · Asperg, DE

Key dates

Filing date	Nov 5, 1997
Grant date	Jun 29, 1999
Priority date	—
Expiry date	Nov 5, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG01F5/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for measuring the mass of a flowing medium, or flow rate meters, having a measuring element accommodated in a measurement support; upstream of the measuring element, a grid with flow openings is provided. To attain a substantially rotational symmetrical velocity distribution even in the case of a severely impeded oncoming flow, the grid has flow openings, which at least regionally have a different flow cross section. The flow cross sections of the flow openings are adapted to the oncoming flow, in order to bring about a flow with substantially even velocity distribution downstream of the grid. The device is intended for measuring the mass of a flowing medium, in particular for measuring the mass of aspirated air in internal combustion engines.

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