Device for measuring the mass of a flowing medium

Details Device for measuring the mass of a flowing medium Device for measuring the mass of a flowing medium

1997-11-05

1999-06-29

Chilcot, Richard

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

059182792

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.

REFERENCES:
patent: 4660587 (1987-04-01), Rizzie
patent: 5090241 (1992-02-01), Kobayashi
patent: 5392815 (1995-02-01), Stuart
patent: 5412983 (1995-05-01), Rombach et al.
patent: 5495872 (1996-03-01), Gallagher et al.
patent: 5511416 (1996-04-01), Shambayati
patent: 5596969 (1997-01-01), Lipinski
patent: 5689071 (1997-11-01), Ruffner et al.

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