Vitesco Technologies Gmbh

Eads Deutschland Gmbh

Sebastian Beer

Andreas Helwig

Gerhard Mueller

Georg Wachinger

Gerhard Müller

Hans Luinge

Jan Spannhake

Wolfgang Legner

Mattia Perugini

Susann-Nadine Unger

Giovanni Avolio

Wolfgang Lutz

Various embodiments include methods for determining the efficiency of an SCR catalytic converter in a system including a nitrogen oxide sensor, and a metering device for a reducing agent arranged in an exhaust-gas duct, and an exhaust recirculation line with a recirculation valve disposed downstream of the SCR catalytic converter and feeding an intake region of the engine. The methods comprise: setting or identifying a quasi-steady-state operating state and an associated recirculation rate; adding a first quantity of reducing agent using the metering device; measuring a resulting first nitrogen oxide value using the sensor; adding a further predefined quantity, different from the first quantity; measuring the resulting nitrogen oxide values using the sensor; and determining the efficiency of the SCR catalytic converter based at least in part on the associated exhaust-gas recirculation rate and the measured nitrogen oxide values.

Method and device for determining the efficiency of an SCR catalyst

A method and a device for determining the injection quantity or the injection rate of a fluid which is transported to an injector through a hydraulic line and is injected into a reaction space by the injector. The fluid pressure in the hydraulic line is measured by a pressure sensor, the fluid pressure at the injector is determined using the pressure measured by the pressure sensor and a stored transmission function of the hydraulic line, and the injection quantity or the injection rate of the fluid injected by the injector is determined using the fluid pressure determined at the injector.

Method and device for determining the injection quantity or the injection rate of a fluid injected into a reaction space by means of an injector

A device and method for testing a fiber-composite component, which is to be processed by means of bonding, for the presence of at least one substance out of a selection of possible contaminants. A surface heating device for regional heating of a part-zone of the fiber-composite component to be bonded is performed for desorption of contaminants. A sensor array with a plurality of sensors detects contaminants in the gas phase, and a control device ascertains and signals contaminations which are found. An extractor device can be employed to extract machining dust from the fiber-composite component to a desorption device.

Device for inspecting a fibre-composite component for contaminations

A device for collecting particles that have a high electron affinity, particularly explosive particles, from a gas, includes a flow channel () in which at least one electrically positive collector electrode () and at least one ionising electrode () are arranged, between which an electrical field is present so that the particles having high electron affinity can be indirectly charged by corona discharge on the ionising electrode () and can be displaced towards the collector electrode ().

Device for collecting particles that have a strong electron affinity

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Munich, Germany

Sebastian Beer