Continental Automotive Gmbh

Continental Automotive France

Cpt Group Gmbh

Vitesco Technologies Gmbh

Denny Schädlich

Johannes Ante

Stephan Heinrich

Willibald Reitmeier

Markus Herrmann

Andreas Wildgen

Andreas Ott

Manfred Weigl

Rudolf Bierl

Philippe Grass

Torsten Reitmeier

Markus Hien

Ralf Moos

Horst Plankenhorn

Armin Hollstein

Jan Haag

Katharina Burger

Markus Dietrich

Ronny Stangl

Gunter Hagen

Roland Achhammer

Wolfgang Lauerer

Various embodiments include a catalyst measuring system for on-board diagnostics and for determining the aging of an SCR catalytic converter for a vehicle comprising: a processor; an SCR catalytic converter for purifying exhaust gas of the vehicle; a high-frequency sensor for determining the ammonia loading of the SCR catalytic converter; a NOx sensor for sensing the NOx concentration downstream of the SCR catalytic converter; and an ammonia dosing system for injecting ammonia into an exhaust system of the vehicle. The control device instructs the ammonia dosing system to inject ammonia selectively into the exhaust system at a plurality of different dosing rates. The control device evaluates data received from the NOx sensor and of the high-frequency sensor to calculate the ammonia dosing rate.

On-board diagnostics for an exhaust gas catalytic converter and detection of aging

A method and apparatus for compensates for oxygen sensor aging determines a correction of by measuring oxygen content above a specified threshold value and measuring current flowing through the sensor over time.

Method for operating an oxygen sensor, computer program product and oxygen sensor

A coolant circuit for an internal combustion engine includes: a coolant pump; at least one coolant line; a radiator; and a coolant cavity delimited in the internal combustion engine. The coolant pump, the coolant line, the radiator and the coolant cavity are filled with a coolant. One or more sensors, configured to monitor the coolant concentration, are fixedly and permanently arranged in and/or on the coolant circuit.

Coolant circuit

In a method for measuring the fill level of a fluid in a housing using an ultrasound sensor, detected multiple echoes in relation to a signal are reflected from a reference point and level echoes in relation to the signal reflected from the fluid level are evaluated in relation to their fluctuation width. The level echoes can be identified in this manner and the fill level determined from the transit times of the signals to the reference point and to the fluid level.

Method for measuring the fill level of a fluid

A particle sensor arranged in an exhaust duct such that particles from the exhaust-gas flow accumulate on and/or between at least two sensor electrodes when a voltage greater than a limit voltage is applied between the two sensor electrodes and substantially no particles accumulate if the voltage is lower than the limit voltage. During a first time period, a first voltage greater than the limit voltage is applied between the sensor electrodes. During a second time period, a second voltage, lower than the limit voltage, is applied between the sensor electrodes, and/or the particle sensor is heated to a predefined temperature, such that substantially no particles accumulate on and/or between the at least two sensor electrodes. Following the second time period, a third voltage greater than the limit voltage is applied between the sensor electrodes.

Method and device for operating a particle sensor

A method for operating a selective catalytic reduction (SCR) system having a urea solution supply and an ultrasound based urea concentration sensor, the measurement signal of the urea concentration sensor being representative of a propagation time of an ultrasonic pulse along a predefined path length in a fluid of the urea solution supply includes: heating at least the fluid in a detection region of the urea concentration sensor from a predefined first temperature to a predefined second temperature; during the heating, detecting the measurement signal at at least a third and fourth temperature, and in each case determining a raw concentration characteristic value as a function of the respective measurement signal, which raw concentration characteristic value is representative of the propagation time of the ultrasonic pulse; and determining a concentration characteristic value, representative of a concentration of urea in the fluid, as a function of the raw concentration characteristic values.

Method and device for operating an SCR system

A method and device for determining a fuel portion in a motor oil of a motor vehicle. The motor oil is brought between at least two electrodes forming a capacitor. The capacitance of the capacitor is determined while the motor oil is located between the electrodes, and the fuel portion in the motor oil is determined from the capacitance of the capacitor.

Method and device for determining a fuel portion in a motor oil of a motor vehicle

A method and device for measuring the soot load in the exhaust gas systems of diesel engines using a sensor which is mounted downstream of a particulate filter and comprises a sensor element, to measure the operability of the particulate filter. According to the method, the soot load of the sensor element is measured resistively or capacitively using electrodes. The measuring voltage of the sensor element is controlled depending on at least one actual operating parameter of the diesel engine.

Method and device for measuring the soot load in the exhaust gas systems of diesel engines

A soot sensor for the detection of soot particles in an exhaust gas flow, having interdigitally engaged measurement electrodes applied on a substrate. An electrical resistance between the measurement electrodes is a measure of soot load of the exhaust gas flow. The measurement electrodes are divided into two regions, a first region in which no soot particles can be deposited and a second region where soot particles are deposited from the exhaust gas flow. The first region and the second region are exposed simultaneously to the other conditions prevailing in the exhaust gas flow.

Soot sensor

A method for performing on-board functional diagnostics on a soot sensor of a vehicle and/or for detecting further components in the soot in a motor vehicle having an internal combustion engine. The soot sensor is electrically connected to an evaluation circuit with is permanently installed in the motor vehicle. In order to specify a method for performing functional diagnostics on a soot sensor and/or for detecting further components in the soot, with which method it is possible to detect a faulty soot sensor and/or further components in the soot in a cost-effective way, the evaluation circuit measures the temperature coefficient of the soot sensor and detects the defectiveness of the soot sensor and/or the presence of further components in the soot on the basis of the temperature coefficient of the soot sensor.

Method for evaluating the state of a soot sensor in a motor vehicle

A magnetized nut for fastening a compressor wheel of an exhaust turbocharger to a turbo shaft. The nut has a base body made of a non-magnetic material forming a hollow space for accommodating a magnetic material, and a method for the production of the magnetized nut. In order to provide a magnetized nut that is produced in a simple and cost-effective manner and ensures as equal a distribution of mass as possible with regard to the rotational axis of the nut, the magnetic material is introduced into the hollow space using injection molding.

Magnetized nut for fastening a compressor wheel of an exhaust turbocharger to the turbo shaft, and method for the production thereof

An arrangement and method for determining a characteristic variable of a fluid having a movably suspended measuring element, a restraining element, an advancing element and a control device. The control device is designed to actuate the restraining element and/or the advancing element in order to move the measuring element between the first measuring point and the second measuring point, to determine a time period which the measuring element requires in order to be moved between the first measuring point and the second measuring point, and to determine a characteristic variable of the fluid on the basis of the determined time period, a predetermined force and a known geometry.

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Neustadt, Germany

Denny Schädlich