Robert Boschgmbh

Continental Automotive Gmbh

Siemens Aktiengesellschaft

Siemens Aktiengesell Schaft

Siemens Vdo Automotive Ag

Frank Steuber

Rudolf Bierl

Stefan Pesahl

Uwe Konzelmann

Martin Lesser

Andreas Meyer

Andreas Wildgen

Stephen Setescak

Andreas Kaufmann

Achim Briese

Gerhard Hueftle

Bernd Kuenzl

Ulrich Wagner

Hans Beyrich

Thorsten Knittel

Reinhold Herrmann

Michael Rittmann

Edda Sommer

Axel-Werner Haag

Alexander Markov

Thomas Schwartzkopff

Bastian Bodenberger

Werner Rudolf Frie

Holger Unger

Michael Eppler

Waldemar Fruehauf

Holger Weininger

Jürgen Scheibner

Kai Schurig

Jan-Erik Hauschel

Birgitta Hacker-Lemire

A sensor is provided for determining at least one parameter of a fluid medium flowing through a measurement channel, in particular an intake air mass flow of an internal combustion engine. The sensor has a sensor housing, in particular a plug-in sensor that is inserted into or is insertable into a flow tube, in which sensor a measurement channel is fashioned, and has at least one sensor chip situated in the measurement channel for determining the parameter of the fluid medium. The sensor housing has an electronics compartment for accommodating an electronics module and has an electronics compartment cover for closing the electronics compartment. The electronics compartment cover has, at least in part, electrically conductive properties. For example, the electronics compartment cover is placed onto the electrical ground of the sensor and, viewed in projection, partly or completely covers the sensor chip.

Sensor for determining at least one parameter of a fluid medium flowing through a measurement channel

A sensor device includes a moisture module that includes a sensor element for detecting moisture of a fluid medium flowing in a flow direction and a protective membrane screening the sensor element. The sensor device includes a housing, in a measuring chamber of which the moisture module is at least partially situated, and that includes a protective tube extending into the flowing fluid medium in an axial direction perpendicular to the flow direction, the protective tube is designed for flow of the fluid medium into at least one inlet opening, through an inflow path, into the measuring chamber counter to the axial direction, and out of the measuring chamber via an outflow path in the axial direction and an outlet opening, where, with respect to a direction of gravity, the openings are at a bottom of the protective tube.

Sensor device for detecting a moisture content of a flowing fluid medium

A sensor device for detecting at least one property of a flowing fluid medium includes: at least one moisture sensor; and at least one application device for applying the flowing fluid medium to the moisture sensor. The application device includes at least one diaphragm and at least one protective device which has at least one guide rib structure.

Sensor device for detecting at least the moisture of a flowing fluid medium

The present invention relates to a method and a device for monitoring an exhaust-gas turbocharger of an internal combustion engine. In order to create an inexpensive and also reliably operating method and a corresponding device for monitoring an exhaust-gas turbocharger, it is proposed that a sound transducer which is designed to record rotational-speed dependent turbocharger operating noise is provided, which sound transducer is connected to an electronic system for frequency analysis for the output of a turbocharger rotational speed signal.

Method and device for monitoring an exhaust-gas turbocharger

A sensor circuit for a flow sensor comprises terminating impedances connected in parallel to the sound transducers and has a signal generator, which is configured as a power source. The circuit arrangement is suitable particularly for the operation of an airflow sensor in internal combustion engines.

Circuit arrangement for the bidirectional operation of sound transducers disposed at the ends of a measuring section

A device is provided for determining a mass flow of a first gas flowing in a flowing channel of an internal combustion engine of a motor vehicle. The device includes: sound transducers arranged at respective ends of a measuring path for providing sound signals, a temperature sensor for determining a temperature of an overall mass flowing in the flow channel, and an evaluation unit arranged downstream of the sound transducers. The evaluation unit is capable of carrying out the following: determining a flow rate of the overall mass and a speed of sound based on delay times of the sound signals, determining an overall mass flow based on the flow rate, the temperature, and a pressure of the overall mass in the flowing channel, ascertaining a proportion of a second gas flowing in the flow channel at a temperature above 10&#xb0; C. and based on the speed of sound and the temperature, and correcting the overall mass flow to obtain the mass flow of the first gas.

Device for determining a mass flow of a first gas within an overall mixture of gases

Presented is a measuring device for recording a gas mass flow of an internal combustion engine. The measuring device includes a sensor element for recording the gas mass flow. The sensor element includes an evaluation circuit connected downstream of the sensor element. The evaluation circuit includes an adder for determining a total mass flow over a multiplicity of engine cycles.

Measuring device for recording a gas mass flow

An air mass flowmeter, suitable for connection to an air-intake manifold of an internal combustion engine, measures an air mass taken in by the engine. The flowmeter has an air passage consisting of a first channel and a second channel joined by a turning area. An air mass sensor is located in the second channel downstream of the turning area, on an inner wall of the second channel. A flow element is located in the turning area, projects from an inner wall of one of the channel sections towards a curved wall of the turning area to define a point of separation of a stream of air from an inner channel wall upstream of the air mass sensor.

Air mass flowmeter with controlled flow separation position

The invention relates to a device with an air inlet manifold () and an air mass sensor arrangement () inserted radially therein, the insertion opening () of which is arranged perpendicular to the airflow direction () in the manifold (). A wing-shaped shielding body () is arranged before the insertion opening () such as to cover the insertion opening () and guarantee a streamline airflow to the insertion opening () and the essentially straight surface thereof, transverse to the flow direction of the air flowing over said surface, is oriented perpendicular to the insertion direction of the air mass sensor arrangement ().

Device with an air intake manifold and an air mass sensor arrangement inserted therein

An air mass sensor has a three-part configuration formed of an insertion element, a measuring channel element and a housing element for accommodating an evaluation device. In order to be able to provide flexible insertion elements for a device having a short overall height, the measuring channel element and the housing element are joined to one another along a side of the measuring channel element that is perpendicular to the main direction.

Device for measuring the mass of air flowing inside a line

Growing community of inventors

Kornwestheim, Germany

Frank Steuber