Apparatus for determining fluid medium characteristics

A fluid medium and characteristic technology, which is applied in the field of characteristic devices, can solve the problems affecting the signal and signal quality, affecting the signal and signal quality of the device, and achieve the effect of improving signal quality and robustness

Inactive Publication Date: 2011-12-28
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the flow boundary layer in the region of the device can strongly affect the signal and signal quality of the device
Transitions between flow regimes are especially possible, which are not always predictable, but which can clearly affect the signal and signal quality significantly

Method used

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  • Apparatus for determining fluid medium characteristics
  • Apparatus for determining fluid medium characteristics
  • Apparatus for determining fluid medium characteristics

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Embodiment Construction

[0026] exist Figures 1A to 3 Different configurations of a device 110 for determining properties of a flowing fluid medium, essentially according to the prior art, are shown in FIG. The device 110 according to the prior art can be developed according to the invention, as explained in more detail below, by supplementing the device 110 with at least one suction device, as will be explained in more detail below. In the exemplary embodiment shown, device 110 is designed as an ultrasonic air mass meter 112 . However, the invention can basically also be used for other measuring principles.

[0027] Figures 1A to 1C A first embodiment of the device 110 is shown in different views. here, Figure 1A A perspective view of device 110 is shown, Figure 1B shows an exploded view, while Figure 1C A perspective view seen in the flow direction of the fluid medium is shown. These figures are set forth together below.

[0028] as in Figures 1A to 1C As shown in , at least one flow tu...

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Abstract

The invention provides an apparatus for determining fluid medium characteristics, especially to an air quality device (110) in a combustion motor. The device (110) comprises at least one sensor device (126) for determining fluid medium characteristics, at least one surface (168) overflowed by a fluid medium and at least one suction device (180) arranged to partially suck at least one flow boundary layer (170,172) of the surface (168).

Description

technical field [0001] The invention relates to a device for detecting properties of a flowing fluid medium. Background technique [0002] A large number of devices for detecting properties of a flowing fluid medium are known from the prior art, for example from automotive technology. The fluid medium can in principle be a gas and / or a liquid, for example an air mass flowing in the intake manifold of an internal combustion engine. In principle, however, other fields of application of the invention are also conceivable. The property to be detected (where a plurality of properties can also be detected) can in particular be a flow property such as velocity, mass flow or volume flow. In principle, combinations of the above-mentioned and / or other properties can also be detected. The invention is basically described below with reference to an air mass meter, in particular an air mass meter based on the use of ultrasonic signals which are transmitted through a fluid medium and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D3/028
CPCG01F1/662F02D41/18
Inventor A·布里泽U·康策尔曼T·朗
Owner ROBERT BOSCH GMBH
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