Abstract: Methods and/or devices for detecting the flow rate of a flowing medium, in particular the flow rate of a flowing air mass, are described, in which the flowing medium is detected with two evaluation methods that operate according to different principles and the two measurement signals obtained are set in relation to each other in order to determine correction methods. Since the two measurement methods react differently to interference effects, the comparison of the two output signals permits conclusions to be drawn as to the type and the order of magnitude of the interference effects and a corrected measurement signal can be obtained, which is independent of the interference effects.

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 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.

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.

Abstract: A device for measuring at least one parameter of a medium flowing in a line, in particular the intake air mass of an internal combustion engine in which fluid particles and solid particles in the line influence a characteristic curve behavior of a measuring element which is used to determine a parameter of the flowing medium. A protective screen according to the invention deflects fluids and solid particles away from the measuring element in such a way that they are conveyed against an inner wall of the line. In addition, the device stabilizes the flowing medium by generating longitudinal eddies in a flow direction.

Abstract: In devices for measuring the mass of aspirated air of an internal combustion engine, for instance, via a line, it is already known to provide a tubular body inside this line and to provide a temperature-dependent measuring element inside the tubular body. In order that dirt particles and liquid droplets entrained by the aspirated air will be kept away from the measuring element, in accordance with the invention, a protective screen is disposed inside the tubular body, upstream of the measuring element; the screen extends in inclined fashion in the flow direction, and dirt particles and liquid droplets are deposited on it and carried to a downstream end of the protective screen, so that via an outflow opening they can reach the inner conduit wall of the tubular body and be made to bypass the measuring element.

Abstract: Methods and/or devices for detecting the flow rate of a flowing medium, in particular the flow rate of a flowing air mass, are described, in which the flowing medium is detected with two evaluation methods that operate according to different principles and the two measurement signals obtained are set in relation to each other in order to determine correction methods. Since the two measurement methods react differently to interference effects, the comparison of the two output signals permits conclusions to be drawn as to the type and the order of magnitude of the interference effects and a corrected measurement signal can be obtained, which is independent of the interference effects.

Abstract: The invention relates to a device for measuring at least one parameter of the intake air mass flow of an internal combustion engine. Fluid particles contained in the line act on a measuring element and influence a characteristic curve behavior of the measuring element used to determine parameters of the flowing medium. In order to reduce the action of fluid on the measuring element, the measuring element is disposed in a line or a tubular body, downstream of a protective screen, which deflects the medium flow and deflects the fluid particles. Downstream of the protective screen, longitudinal ribs, a suction opening, or a turbulence generator reduce the release of uncontrolled eddies.

Abstract: The match with a measurement characteristic curve of a device for air flow measurement is disturbed by pulsations, soiling and poor flow behavior. An improvement in the measuring performance of the device is achieved by provisions, which are adapted to one another, for reducing these sources of trouble, according to which the flow cross section of an inlet conduit narrows in a flow direction in the inlet conduit toward a deflection conduit, and a peripheral face of a first portion of the deflection conduit is embodied in inclined fashion, and at least one outer face of a sensor carrier, together with a peripheral face, closer to an outlet conduit, of the inlet conduit, forms a flush transition.

Abstract: A device is described 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, having at least one measuring element around which the medium flows.

Abstract: Devices for measuring the mass of a flowing medium using a temperature-sensitive measuring element have the disadvantage that considerable measuring errors may occur in the event of a pulsating flow characterized by flow fluctuations. In order to counteract these measuring errors, the device (1) possesses an axially extending measuring duct (33), in which a temperature-sensitive measuring element (20) is accommodated. The measuring duct (33) extends from the inlet mouth (36) to a deflecting duct (34), out of which the flowing medium flows out from an outlet orifice (46) without any axial distance from the inlet mouth (36) and radially underneath the latter. The invention is provided for measuring the mass of a flowing medium, in particular for measuring the intake air mass of internal combustion engines.

Abstract: A device for measuring the mass of a flowing medium has a measuring element disposed in a measurement fitting. A flow rectifier that is provided upstream of the measuring element has flow openings that are separated from one another by intermediary pieces. A wire lattice is fastened to a tube of the flow rectifier extending in the direction of the measuring element. The tube of the flow rectifier has a number of fixing elements disposed offset from one another at a predetermined distance in which wires of the wire lattice are secured so that the wire lattice has a fixed configuration in relation to the intermediary pieces of the flow openings of the flow rectifier.

Abstract: A measuring device serves to measure the mass of a medium flowing in a line along the primary flow direction, in particular the mass of aspirated air of an internal combustion engine. The measuring device has a measuring element bathed by the flowing medium, which element is disposed in a measurement conduit provided in the line. The conduit extends in an axial direction from an inlet opening of the measurement conduit to a deflection conduit. The deflection conduit leads to an outlet opening that discharges into the line at an outer face of the measuring device. In the surroundings of the outlet opening, at least one protuberance is provided on the outer face of the measuring device that has the outlet opening.

Abstract: Known devices for measuring the mass of a flowing medium by means of a temperature-sensitive measuring element have the disadvantage that considerable measuring errors may occur in the event of a pulsating flow characterized by flow fluctuations.

Abstract: A device for measuring the mass of a medium flowing in a line, especially the aspirated air mass on an internal combustion engine, comprising a flow tube, which is disposed in the line. A measuring element around which the flowing medium flows is disposed in the flow tube. The medium flows from the line into the flow tube at an inlet opening and out of the flow tube into the line at an outlet opening. An outlet end face of the flow tube surrounding the outlet opening has structural grooves, which extend with a radial directional component with respect to a longitudinal axis of the flow tube.

Abstract: A flow rate meter having a temperature-dependent measuring element in which the device has a measuring conduit, which is equipped with a flow connection that extends from an inlet to an outlet, in order to cause some of the medium flowing in the measuring conduit, in the flow connection, to bypass the measuring element. The device is intended for measuring the mass of a flowing medium, in particular for measuring the aspirated air mass of internal combustion engines.

Abstract: A device for measuring the mass of a flowing medium aspirated by internal combustion engines is secured in an intake line. The device protrudes into the intake line with a measuring part that has a measuring conduit, and has a measuring element, accommodated in the measuring conduit (20), and facing in a direction of the flowing medium. The device is mounted in the intake line such that the measuring part with the measuring conduit is rotated by an angle a relative to the medium flowing in the intake line. The invention is contemplated for measuring the mass of a flowing medium, in particular for measuring the mass of air aspirated by internal combustion engines.

Abstract: A device for measuring the mass of a flowing medium, or flow rate meters, having a measuring element accommodated in a measurement support; upstream of the measuring element, a grid with flow openings is provided. To attain a substantially rotational symmetrical velocity distribution even in the case of a severely impeded oncoming flow, the grid has flow openings, which at least regionally have a different flow cross section. The flow cross sections of the flow openings are adapted to the oncoming flow, in order to bring about a flow with substantially even velocity distribution downstream of the grid. The device is intended for measuring the mass of a flowing medium, in particular for measuring the mass of aspirated air in internal combustion engines.

Abstract: The invention proposes a device for measuring the mass of a flowing medium, in particular the mass of air aspirated by internal combustion engines. The device has a platelike sensor element which is accommodated in a recess of a sensor carrier, and which with a sensor region that has at least one measuring resistor is exposed to the flowing medium in order to measure its mass. The sensor element is accommodated essentially flush in the recess and is retained in the recess by being glued to a bottom face in the recess. The bottom face of the recess of the sensor carrier has a troughlike indentation, which extends at least partially along the circumference of the sensor element outside the sensor region that has the at least one measuring resistor. The device according to the invention is intended to measure the mass of a flowing medium, in particular for measuring the mass of air aspirated by internal combustion engines.

Abstract: In a method for correcting an output signal of an air mass meter, an air mass aspirated by an internal combustion engine is detected, so that first a characteristic of the air mass meter representing a relationship between an output voltage of the air mass meter and a flow air mass is determined, the characteristic in a region which the air mass can flow back is corrected by changing the characteristic in a return flow region relative to the measured characteristic, the change of the characteristic is performed so that the relationship between the output voltage of the air mass meter and the measured air mass is adjusted to minimize error measurements, and the computations of the aspirated air mass is therefore performed with the aid of the corrected characteristic.