Abstract: A device is provided for determining at least one parameter of a medium flowing in a line in a main flow direction, e.g., a parameter of the intake air mass of an internal combustion engine. The device includes a part, which is inserted into the line at a predetermined alignment with respect to the main flow direction in such a way that a partial flow of the medium flowing in the line in the main flow direction flows through at least one measuring channel provided in the part in a first direction from an intake of the measuring channel to an outlet of the measuring channel. The device further includes a measuring element situated in the measuring channel for determining the at least one parameter.

Abstract: A device for determining at least one parameter of a medium flowing in a line, particularly the intake air mass of an internal combustion engine, having one part which has at least one measuring channel for conducting at least one partial flow of the medium flowing in the line in a main flow direction and which can be inserted into the line with a predetermined alignment with respect to the main flow direction, and having at least one measuring element situated in the measuring channel for determining the at least one parameter. In the part, a channel structure is formed, having an input region for the entry of a partial flow of the medium and having a measuring channel branching off from the input region. The input region has a separation zone with a separation opening, and at least two projections which protrude from mutually opposite interior walls of the input region into the input region.

Abstract: A device for determining at least one parameter of a medium flowing in a line in a main flow direction includes a part adapted for introduction into the line.

Abstract: A device is provided for determining at least one parameter of a medium flowing in a line in a main flow direction, e.g., a parameter of the intake air mass of an internal combustion engine. The device includes a part, which is inserted into the line at a predetermined alignment with respect to the main flow direction in such a way that a partial flow of the medium flowing in the line in the main flow direction flows through at least one measuring channel provided in the part in a first direction from an intake of the measuring channel to an outlet of the measuring channel. The device further includes a measuring element situated in the measuring channel for determining the at least one parameter.

Abstract: A method and a control unit for operating an internal combustion engine of a motor vehicle are provided, in particular for controlling/regulating the internal combustion engine as a function of an air-mass sensor signal from a first air-mass sensor. A first auxiliary signal, which is obtained arithmetically from an additional sensory system or from models of the internal combustion engine, allows a plausibility control or the substitution of the air-mass sensor signal in the case of signal interference of the air-mass sensor signal, and thereby ensures that the internal combustion engine is able to continue working in the optimal operating point.

Abstract: A device for determining at least one parameter of a medium flowing in a line, in particular the intake air mass of an internal combustion engine, has a part provided for introducing into the line, having at least one measuring channel for conducting at least one subflow of the medium flowing in the line, and having at least one measuring element situated in the measuring channel for determining the at least one parameter, in which the part may be introduced into the line with a predetermined orientation with respect to the medium flowing in the line in the main flow direction.

Abstract: A method for cleaning of a measuring element (1) passed over by a gas flow is arranged on a thin-walled membranous material (5). The measuring element (1) includes at least one heatable element (6, 7, 8; 10, 11), which is arranged on the membranous material, the membranous material being capable of vibrating. By means of a control apparatus (20) or a switching (22) associated with the measuring element, a periodic delivery of current (41, 42) in intervals takes place in this manner to at least one heatable element (6, 7, 8; 10, 11) of the measuring element (1) and thereby produces vibrations. Alternatively, vibrations of the membranous material (5) can be produced by special vibration exciters or by means of ultrasonic coupling.

Abstract: A device for determining at least one parameter of a medium flowing in a line, particularly the intake air mass of an internal combustion engine, having one part which has at least one measuring channel for conducting at least one partial flow of the medium flowing in the line in a main flow direction and which can be inserted into the line with a predetermined alignment with respect to the main flow direction, and having at least one measuring element situated in the measuring channel for determining the at least one parameter. In the part, a channel structure is formed, having an input region for the entry of a partial flow of the medium and having a measuring channel branching off from the input region. The input region has a separation zone with a separation opening, and at least two projections which protrude from mutually opposite interior walls of the input region into the input region.

Abstract: A device for determining a parameter of a medium flowing in a line, according to the related art, does not offer sufficient protection for a measuring element from liquid or solid particles which may dirty or damage the measuring element in an unwanted way. A device has an input region, whence, on the one hand, the flowing medium flows into the measuring channel, and on the other hand, through at least one separation opening, liquid and solid particles flow, and thus flow so as to bypass the measuring channel.

Abstract: A method and a control unit for operating an internal combustion engine of a motor vehicle are provided, in particular for controlling/regulating the internal combustion engine as a function of an air-mass sensor signal from a first air-mass sensor. A first auxiliary signal, which is obtained arithmetically from an additional sensory system or from models of the internal combustion engine, allows a plausibility control or the substitution of the air-mass sensor signal in the case of signal interference of the air-mass sensor signal, and thereby ensures that the internal combustion engine is able to continue working in the optimal operating point.

Abstract: Devices for determining at least one parameter of a flowing medium having an inner pipe according to the related art have the disadvantage that whirls are formed, which causes increased signal noise at the measuring element and pressure drop. A device (1) is described which has an element (11) that reduces the whirl formation in the flowing medium.

Abstract: A device for determining at least one parameter of a flowing medium. The device including an element, for example in the form of a bulge, in the channel in which the measuring element is positioned, which deflects the foreign particles and thus protects the measuring element.

Abstract: The invention relates to a device for determining at least one parameter of a medium flowing in a line, in particular the intake air mass of an internal combustion engine. The solid particles contained in the line act on a measuring element and influence a characteristic curve behavior of the measuring element, which is used to determine parameters of the flowing medium. In order to reduce the action of solid particles on the measuring element, the measuring element is disposed in a line or a tubular body downstream of a protective screen, and an element for influencing movement paths of the solid particles is disposed in the line, on an inner wall. By intentionally influencing the movement paths of the solid particles, their action on the measuring element is considerably reduced.

Abstract: The invention relates to a method for compensating for the measurement deviation of an air flow rate sensor, which is disposed in a flow conduit, on the basis of soiling or aging. To compensate for the measurement error, it is proposed that the sensor be acted upon by an air surge and that the response time of the sensor be evaluated. The sensor error caused by the deposit of soil or by aging is finally corrected as a function of the response time.

Abstract: A pressure sensor having a sensor diaphragm for measuring pressure in combustion chambers of internal combustion engines, the pressure sensor being located in a housing, and high pressure and temperature fluctuations occurring in the combustion chamber. A heat shield made of a good heat-conducting material and provided with orifices is placed upstream from the sensor diaphragm to dissipate the heat to the housing surrounding the pressure sensor.

Abstract: A fiber-optic pressure sensor having a pressure measuring head including a housing which accommodates a diaphragm functioning as a pressure transducer and completing a translational movement under applied pressure and including at least one optical waveguide, the face of which is directed to the inside surface of the diaphragm and via which the light emitted by a light source is introduced into the pressure measuring head, the inside diaphragm surface having a pattern of highly reflective areas and areas of low reflectivity.

Abstract: A device including a bypass channel including a separating wall, which protects a measuring element, or, through a special arrangement of an inner wall surface, prevents foreign particles from flowing to the measuring element.

Abstract: A device for separating gas and liquid/solid particles from a gas/liquid/solid particle mixture having a line in which the medium flows, a deflecting element situated in the line, which generates separating vortexes in the medium and thus separates gas from liquid/solid particles.

Abstract: A device for determining at least one parameter of a medium flowing in a line, in particular the intake air mass of an internal combustion engine, has a part provided for introducing into the line, having at least one measuring channel for conducting at least one subflow of the medium flowing in the line, and having at least one measuring element situated in the measuring channel for determining the at least one parameter, in which the part may be introduced into the line with a predetermined orientation with respect to the medium flowing in the line in the main flow direction.

Abstract: A device for measuring at least one parameter, in particular of a volumetric flow, of a medium flowing in a line, in particular of the intake air volumetric flow of an internal combustion engine, includes at least one measuring element around which the medium flows. Constrictions, which do not uniformly constrict the cross-section of the line, do not produce any ring-shaped eddies that may be heard in the form of whistling noises.