Continental Automotive Gmbh

Vitesco Technologies Gmbh

Micronas Gmbh

Siemens Vdo Automotive Ag

Continental Automobile Gmbh

Thorsten Knittel

Stephen Setescak

Stephan Schürer

Andreas Wildgen

Mark Hornung

Rudolf Bierl

Stephan Heinrich

Philippe Grass

Ignaz Eisele

Frank Steuber

Stefan Pesahl

Stephan Schuerer

Markus Burgmair

Holger Weininger

Wahyu Widanarto

Oliver Senftleben

Christopher Senft

Gunter Freitag

Lukas BÜRGI

A method for determining a corrected air mass flow value in an engine having an air mass meter in its intake. The method includes determining a cold start condition of the engine at a first time when there is no air mass flow in the intake tract, producing a reference signal by the air mass meter at the first time, and determining an air mass flow offset from the reference signal, producing a measurement signal by the air mass meter at a second time, which is not equal to the first time, which is in an operating period of the engine, determining an air mass flow value from the measurement signal, and determining a corrected air mass flow value from the air mass flow offset and the air mass flow value.

Method for determining an air mass in an internal combustion engine

The present disclosure provides a method for measuring air mass flow using an air mass flow meter. The air mass flow meter comprises a sensor element for detecting an air mass flow (Q) and for generating a signal (S), and an electronic circuit for processing the signal (S) from the sensor element, wherein the sensor element generates a non-linear signal characteristic. The method may include converting the non-linear signal into a correcting, non-linear signal characteristic, then filtering the correcting, non-linear signal characteristic, then converting the filtered non-linear signal characteristic into a non-linear signal characteristic, and then generating an output signal relaying the signals (S) detected by the sensor element and processed by the linearization element, the filter element, and the conversion element.

Air mass flow meter

An air mass sensor includes a microelectromechanical-type sensor element having a heating element. A first temperature sensor element is arranged on the sensor element upstream of the heating element, and a second temperature sensor element is arranged on the sensor element downstream of the heating element. The first temperature sensor element has a first width and a first length, and the second temperature sensor element has a second width and a second length. To eliminate or closely limit false measurement results due to the presence of dirt on the sensor element, the first width of the first temperature sensor element is greater than the second width of the second temperature sensor element.

Air mass sensor

An air mass flowmeter having a sensor element of microelectromechanical design, a heating element, and a temperature sensor element. The temperature sensor element is a thermocouple assembly having a multiplicity of thermocouples connected in series. Each thermocouple is a first metal conductor and a second, different metal conductor connected to one another at one end by a connection point. To reduce the distortion of measurement results by the soiling of the sensor element, the first thermocouple(s) and the last thermocouple(s) of the thermocouple assembly are polarized such that an electrical current flows first through the second metal conductor and then through the first metal conductor in each case. The remaining thermocouples of the thermocouple assembly are polarized such that the electrical current flows first through the first metal conductor and then through the second metal conductor.

Air mass flowmeter

An air mass meter has a sensor element, across which an air mass flow to be measured moves. The sensor element is a micro-electro-mechanical system having a membrane, on which a heating element is formed. An electrical measuring resistor and at least two electrical comparison resistors are arranged upstream and downstream of the heating element. A first temperature sensor element is formed with a measuring resistor upstream of the heating element and two comparison resistors arranged downstream of the heating element. The second temperature sensor element is formed with a measuring resistor arranged downstream of the heating element and two comparison resistors arranged upstream of the heating element.

Air mass meter with a sensor element

A sensor system has at least one first sensor element for measuring a first physical variable and a second sensor element for measuring a second physical variable. The first sensor element is part of an application-specific integrated circuit which, in addition to the first sensor element, has further electronic circuits. The second sensor element is arranged separately and outside the application-specific integrated circuit. The second sensor element is electrically connected to the application-specific integrated circuit via a first connection point. The application-specific integrated circuit is configurable via the first connection point and the measurement signal from the second sensor element can be read out via the first connection point.

Sensor system

A method for operating an air mass sensor arranged in the intake section of an internal combustion engine and configured to measure the mass of the air flowing through the intake section includes the air mass sensor detecting a stationary state of the internal combustion engine using an element for evaluating measurement signals generated by an air mass sensor element, and, in response to detection of a stationary state, switching the air mass sensor element into a second operating mode that reduces contamination of the air mass sensor element. The second operating mode permits at least one measurement of the air mass flowing in the intake section, as a result of which the air mass sensor itself detects a starting of the internal combustion engine using the element for evaluating the measurement signals generated by the air mass sensor element.

Method for operating an air mass sensor

A sensor for detecting the mass flow rate and the temperature of a fluid flow has a mass flow rate sensor having a mass flow rate sensor element, a temperature sensor having a temperature sensor element, and an interface for power supply. The sensor converts the measured values detected in analog by the mass flow rate sensor element and the temperature sensor element into digital output signals. In order to specify the simplest and most economical sensor possible for detecting the mass flow rate and the temperature of a fluid flow, at least one analog/digital converter is arranged in the sensor, which analog/digital converter converts the analog measured values of the mass flow rate sensor element and/or the analog measured value of the temperature sensor element into digital output signals and provides the digital output signals at a single digital interface.

Sensor for detecting the mass flow rate and the temperature of a fluid flow

An air mass meter having a sensor chip. The sensor chip is constructed as a microelectromechanical system and has a sensor element, an electronic evaluation circuit and an electronic oscillator. The sensor chip is fastened to a carrier element using an adhesive. In order to specify an air mass meter which makes it possible to evaluate data in a particularly reliable and accurate manner, the sensor chip is divided into a first region and a second region. The sensor chip is fastened to the carrier element using the adhesive solely in the first region, and the sensor element and the oscillator are arranged in the second region.

Air mass meter

A hydrogen sensor includes a support having a first temperature sensor, a heating element and an evaluation unit. The hydrogen sensor furthermore includes a mass flow reduction apparatus by which a gas mass flow over the first temperature sensor and the heating element is reduced. The evaluation unit determines a hydrogen concentration in a gas or gas mixture based on a first temperature detected by the first temperature sensor. A detection method for hydrogen concentration having the hydrogen sensor and a motor vehicle having a fuel cell drive having the hydrogen sensor.

Hydrogen sensor and a detection method for hydrogen concentration

An apparatus for measuring a hydrocarbon concentration of a gas stream in a line includes at least one sensor for measuring a hydrocarbon concentration, the position of said sensor being set off in relation to the line.

Apparatus for measuring a hydrocarbon concentration and internal combustion engine

The invention concerns a sensor with silicon-containing components from whose sensitive detection element electrical signals relevant to a present analyte can be read out by means of a silicon semiconductor system. The invention is characterized in that the silicon-containing components are covered with a layer made of hydrophobic material in order to prevent unwanted signals caused by moisture.

Sensor having hydrophobic coated elements

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.

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Pentling, Germany

Thorsten Knittel