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Sensor device for determining at least one parameter of a fluid medium flowing through a duct

A sensor device, fluid medium technology, applied in the direction of measuring device, measuring flow/mass flow, liquid/fluid solid measurement, etc., can solve the problem that the charged particles are not sufficiently kept away from the sensing area

Active Publication Date: 2015-02-11
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, the charged particles that arise have hitherto been only insufficiently kept away from the sensing area

Method used

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  • Sensor device for determining at least one parameter of a fluid medium flowing through a duct
  • Sensor device for determining at least one parameter of a fluid medium flowing through a duct
  • Sensor device for determining at least one parameter of a fluid medium flowing through a duct

Examples

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Embodiment Construction

[0030] figure 1A perspective illustration of a sensor device 10 for determining a parameter of a fluid medium flowing through a channel is shown. In the exemplary embodiment, sensor device 10 is designed as a hot-film air mass sensor and is capable, in particular, of sensing an intake air mass flow of an internal combustion engine. In this exemplary embodiment, the sensor arrangement comprises a sensor housing 12 which can be designed as a plug-in sensor which can be inserted, for example, into a flow line, in particular into the intake side of the internal combustion engine. A channel structure 14 is accommodated in the sensor housing 12 , through which a typical amount of fluid medium can flow through an inlet 16 pointing opposite to a main flow direction 18 of the fluid medium in the used state.

[0031] here, figure 1 A detail of sensor housing 12 in the region of channel structure 14 is shown. The channel structure 14 has a main channel 20 which leads to the opposite s...

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PUM

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Abstract

A sensor device for determining at least one parameter of a fluid medium flowing through a duct, e.g., an intake air mass flow of an internal combustion engine, includes: a sensor housing, e.g., a sensor plug that is placed or that can be placed into a flow tube, in which the duct is fashioned; and at least one sensor chip situated in the duct for determining the parameter of the fluid medium. The sensor chip has a sensor area. The sensor housing has an inlet into the duct that is oriented opposite a main direction of flow of the fluid medium, and has at least one outlet from the duct. The sensor area is covered at least partly by an electrically conductive layer.

Description

technical field [0001] The invention relates to a sensor device for determining at least one parameter of a fluid medium flowing through a channel. Background technique [0002] Numerous methods and devices are known from the prior art for determining at least one flow property of a fluid medium, ie a liquid and / or a gas. In this case, the flow properties as possible parameters may be any measurable physical and / or chemical properties which quantify or characterize the flow of the fluid medium. In particular, flow velocity and / or mass flow and / or volume flow can be involved here. [0003] The invention is explained below in particular with reference to a so-called hot-film air-quality meter, such as by Konrad Reif (ed.): Sensoren im Kraftfahrzeug (Sensors in Motor Vehicles), 2010 1st Edition, 146 Known to page 148. Such hot-film air quality meters are usually based on a sensor chip, in particular a silicon sensor chip, which has, for example, a sensor membrane as a measur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/684
CPCG01F1/69G01M15/042G01F1/6845G01F1/692G01F5/00
Inventor U·康策尔曼U·瓦格纳E·左默
Owner ROBERT BOSCH GMBH
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