초록 ▼

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 cas

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.

대표청구항 ▼

[ We claim:] [1.] A device for measuring the mass of a flowing medium, comprising a measurement support, a measuring element and a grid provided upstream of the measuring element, the grid having many flow openings, in which the flow openings (40) at least regionally have a variable flow cross secti

[ We claim:] [1.] A device for measuring the mass of a flowing medium, comprising a measurement support, a measuring element and a grid provided upstream of the measuring element, the grid having many flow openings, in which the flow openings (40) at least regionally have a variable flow cross section, the grid (21) has at least one notch (37) on an edge (44) that has a predetermined location relative to the flow openings (40), and the at least one notch (37) receives at least one rib (38) that extends radially inward from an inner wall (34) of an opening (23) in the measurement support (5).