Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A photo-acoustic gas sensor includes a light emitter unit having a light emitter configured to emit a beam of light pulses with a predetermined repetition frequency and a wavelength corresponding to an absorption band of a gas to be sensed, and a detector unit having a microphone. The light emitter unit is arranged so that the beam of light pulses traverses an area configured to accommodate the gas. The detector unit is arranged so that the microphone can receive a signal oscillating with the repetition frequency.

Abstract: A pressure sensor package includes a pressure sensor having a first side attached to a substrate and a second side opposite the first side, the first side having a pressure inlet aligned with an opening in the substrate, the second side having one or more electrical contacts. A logic die attached to an opposite side of the substrate as the pressure sensor is operable to process signals from the pressure sensor. First electrical conductors connect to the one or more electrical contacts of the pressure sensor. Second electrical conductors connect to one or more electrical contacts of the logic die. A mold compound completely encapsulates the second electrical conductors and at least partly encapsulates the logic die and the first electrical conductors. An open passage in the mold compound is aligned with the opening in the substrate so as to define a pressure port of the pressure sensor package.

Abstract: A pressure sensor package includes a pressure sensor having a first side attached to a substrate and a second side opposite the first side, the first side having a pressure inlet aligned with an opening in the substrate, the second side having one or more electrical contacts. A logic die attached to an opposite side of the substrate as the pressure sensor is operable to process signals from the pressure sensor. First electrical conductors connect to the one or more electrical contacts of the pressure sensor. Second electrical conductors connect to one or more electrical contacts of the logic die. A mold compound completely encapsulates the second electrical conductors and at least partly encapsulates the logic die and the first electrical conductors. An open passage in the mold compound is aligned with the opening in the substrate so as to define a pressure port of the pressure sensor package.

Abstract: 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.

Abstract: A photo-acoustic gas sensor includes a light emitter unit having a light emitter configured to emit a beam of light pulses with a predetermined repetition frequency and a wavelength corresponding to an absorption band of a gas to be sensed, and a detector unit having a microphone. The light emitter unit is arranged so that the beam of light pulses traverses an area configured to accommodate the gas. The detector unit is arranged so that the microphone can receive a signal oscillating with the repetition frequency.

Abstract: A molded semiconductor package includes a substrate having opposing first and second main surfaces, a semiconductor die attached to the first main surface of the substrate, an adhesion adapter attached to the second main surface of the substrate or a surface of the semiconductor die facing away from the substrate, and a mold compound encapsulating the semiconductor die, the adhesion adapter and at least part of the substrate. The adhesion adapter is configured to adapt adhesion properties of the mold compound to adhesion properties of the substrate or semiconductor die to which the adhesion adapter is attached, such that the mold compound more strongly adheres to the adhesion adapter than directly to the substrate or semiconductor die to which the adhesion adapter is attached. The adhesion adapter has a surface feature which strengthens the adhesion between the adhesion adapter and the mold compound.

Abstract: A pressure sensor package includes a pressure sensor having a first side with a pressure sensor port, a second side opposite the first side, and electrical contacts. A logic die stacked on the pressure sensor has a first side attached to the second side of the pressure sensor and a second side opposite the first side with electrical contacts. The logic die is laterally offset from the electrical contacts of the pressure sensor and operable to process signals from the pressure sensor. Electrical conductors connect the electrical contacts of the pressure sensor to the electrical contacts of the logic die. Molding compound encapsulates the pressure sensor, the logic die and the electrical conductors, and has an opening defining an open passage to the pressure sensor port. External electrical contacts are provided at a side of the pressure sensor package.

Abstract: A device for collecting particles that have a high electron affinity, particularly explosive particles, from a gas, includes a flow channel (12a) in which at least one electrically positive collector electrode (20a) and at least one ionising electrode (18a) 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 (18a) and can be displaced towards the collector electrode (20a).

Abstract: A device and method for testing a fibre-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 fibre-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 fibre-composite component to a desorption device.

Abstract: A method for detecting explosive substance particles in a gas flow includes passing the gas flow through an adsorption net for a specified time period so as to adsorb explosive-substance particles in the gas flow on the adsorption net. The adsorption not includes a microfilter having a pore size that is smaller than the particle size of the explosive-substance particles. The adsorption net is heated to a heating temperature so as to desorb the explosive-substance particles from the adsorption net. A gas flow comprising the desorbed explosive-substance particles is supplied to a detector so as to detect the explosive-substance particles.

Abstract: A device for collecting particles that have a high electron affinity, particularly explosive particles, from a gas, includes a flow channel (12a) in which at least one electrically positive collector electrode (20a) and at least one ionising electrode (18a) 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 (18a) and can be displaced towards the collector electrode (20a).

Abstract: A sample collector for an analysis device for analyzing trace elements, including a wiping element on which sample material can be wiped from a surface to be tested and adsorbed thereon by a wiping process, including a support part with a convexly shaped surface to which the wiping element is attached, is provided. A sample collecting device using this sample collector and a method for taking samples are also provided.