SENSOR ARRANGEMENT FOR DETERMINING AT LEAST ONE PARAMETER OF A FLUID MEDIUM FLOWING THROUGH A MEASURING CHANNEL

• US 20170261359A1
• Filed: 07/22/2015
• Published: 09/14/2017
• Est. Priority Date: 09/08/2014
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Briese, Achim, Mais, Torsten, Wagner, Ulrich, Konzelmann, Uwe
• Granted Patent: US 10,444,047 B2
• Time in Patent Office: Days
• CPC Class Codes: G01F 1/68 by using thermal effects
• CPC Class Codes: G01F 1/684 Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
• CPC Class Codes: G01F 1/6842 with means for influencing the fluid flow
• CPC Class Codes: G01F 13/00 Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups
• CPC Class Codes: G01F 15/00 Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
• CPC Class Codes: G01F 5/00 Measuring a proportion of the volume flow

Abstract

A sensor arrangement is described for determining at least one parameter of a fluid medium flowing through a measuring channel, particularly of an intake air mass flow of an internal combustion engine. The sensor arrangement includes a sensor housing, in particular a plug-in sensor which is introduced or may be introduced into a flow tube and in which the measuring channel is formed, and at least one sensor chip which is situated in the measuring channel for determining the parameter of the fluid medium. The sensor chip is attached to a sensor carrier protruding into the measuring channel. The sensor carrier is designed in such a way that it has a chord. The chord has a length of 4.5 mm to 6.5 mm. In a preferred refinement, the sensor carrier is shaped like a double ellipse or a diving board.

Claims

1-12. -12. (canceled)

13. A sensor arrangement for determining at least one parameter of a fluid medium flowing through a measuring channel, comprising:

a flow tube;

a sensor housing introduced into a flow tube, and in which a measuring channel is formed;

a sensor carrier protruding into the measuring channel; and

at least one sensor chip situated in the measuring channel and for determining the parameter of the fluid medium, wherein;

the sensor chip is attached on the sensor carrier, and

the sensor carrier includes a chord having a length of 4.5 mm to 6.5 mm.

14. The sensor arrangement as recited in claim 13, wherein the sensor housing includes a plug-in sensor.

15. The sensor arrangement as recited in claim 13, wherein the sensor arrangement determines an intake air mass flow of an internal combustion engine.

16. The sensor arrangement as recited in claim 13, wherein:

the sensor carrier, with respect to a main flow direction of the fluid medium in the measuring channel, includes an inflow section upstream from the sensor chip and an outflow section downstream from the sensor chip, and

the outflow section is one of at least partially rounded and at least partially wedge-shaped.

17. The sensor arrangement as recited in claim 16, wherein the sensor carrier has an asymmetrical cross-section with respect to the chord in the outflow section.

18. The sensor arrangement as recited in claim 13, wherein:

the sensor carrier includes an upper side and a lower side opposite thereto,

the sensor chip is situated on the upper side, and

a distance of the upper side to the chord is greater than a distance of the lower side to the chord.

19. The sensor arrangement as recited in claim 13, wherein the sensor carrier includes at least one segmentation.

20. The sensor arrangement as recited in claim 13, wherein the sensor carrier includes at least one projection.

21. The sensor arrangement as recited in claim 20, wherein the projection is cascaded.

22. The sensor arrangement as recited in claim 13, wherein:

the sensor carrier includes a leading edge on an upstream end and a trailing edge on a downstream edge, and

at least one of the leading edge and the trailing edge includes at least one recess.

23. The sensor arrangement as recited in claim 22, wherein the recess is at least one of triangular, semicircular, rectangular, and sinusoidal.

24. The sensor arrangement as recited in claim 13, wherein:

the sensor carrier extends into the measuring channel in an extension direction, and

the extension direction is essentially perpendicular to a main flow direction of the fluid medium in the measuring channel.

25. The sensor arrangement as recited in claim 24, wherein the sensor carrier tapers in the extension direction.

26. The sensor arrangement as recited in claim 24, wherein the sensor carrier tapers one of symmetrically and asymmetrically in the extension direction.