초록 ▼

A device for measuring the mass of a flowing medium by use of a temperature-dependent measuring resistor bathed by the flowing medium and accommodated in a measuring channel. The device has a flow obstacle, embodied in the form of a trip edge, upstream of the measuring element in the region of an in

A device for measuring the mass of a flowing medium by use of a temperature-dependent measuring resistor bathed by the flowing medium and accommodated in a measuring channel. The device has a flow obstacle, embodied in the form of a trip edge, upstream of the measuring element in the region of an inlet opening of the measuring channel, so as to create a chronologically and spatially stable separation zone in the region of the trip edge, thereby preventing chronologically and spatially unstable separation zones and makes it possible to attain a reduction in measuring signal noise. The invention is contemplated for measuring the mass of a flowing medium, especially for measuring the aspirated air mass in internal combustion engines.

대표청구항 ▼

[ What is claimed is:] [1.] A device for measuring the mass of a flowing medium, in particular an aspirated air mass of an internal combustion engine, comprising a carrier body that protrudes into the medium flow from a wall that bounds the flow and extends crosswise to a flow of the medium, a measu

[ What is claimed is:] [1.] A device for measuring the mass of a flowing medium, in particular an aspirated air mass of an internal combustion engine, comprising a carrier body that protrudes into the medium flow from a wall that bounds the flow and extends crosswise to a flow of the medium, a measuring channel (33) is provided in the carrier body through which the flowing medium flows, said measuring channel includes an inlet opening (36), a temperature-dependent measuring resistor, said temperature-dependent measuring resistor is accommodated in said measuring channel, a flow obstacle (50), said flow obstacle is provided upstream of a measuring element (20) supported on the carrier body in a region of the inlet opening (36) of said measuring channel, said flow obstacle (50) creates a defined flow separation (54) of said flowing medium that is operative in the measuring channel (33) in order to reduce signal noise.