Robert Boschgmbh

Thomas Lenzing

Uwe Konzelmann

Klaus Reymann

Dieter Tank

Henning Marberg

Wolfgang E Mueller

Hans Hecht

Gerhard Hueftle

Erhard Renninger

Roland Mueller

Heinz Rilling

Hans Beyrich

Holger Krebs

Torsten Schulz

Richard Joschko

Horst Kubitz

Waldemar Guenther

Markus Sippel

Tobias Lang

Markus Klausner

Fridolin Piwonka

Lutz Mueller

Wolfgang Grimm

Manfred Strohrmann

Christian Heinen

Herbert Roeckel

Manfred Fischer

Benedikt Feldmann

Reinhold Pfotzer

Andy Mikleuschewitsch

Eva Tank

Anke Fleischer

Wolfgang Becker

Uwe Konzelman

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. Between its intake and its outlet, the measuring channel features at least one channel segment in which a mechanism is located that causes flow vortices in this channel segment, whereby liquid droplets and solid particles are advantageously deposited on the inner wall of the channel before they can reach the measuring element.

Airflow meter with device for the separation of foreign particles

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.

Device for determining at least one parameter of a medium flowing in a line

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.

Method for operating an internal combustion engine

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. A channel structure is formed in the part, the channel structure having an inlet area for the entry of a substream of the medium into the channel structure as well as at least one measuring channel branching off from the inlet channel, the measuring channel having an outlet opening that opens toward the outside of the part, the inlet area having a discharge zone that has a discharge orifice on a first lateral wall of the part, which opens toward the environment, and the discharge zone is closed on one second lateral wall diametrically opposite the first lateral wall.

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

Method for cleaning of a measuring element passed over by a gas flow

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.

Device for determining at least one parameter of a medium flowing in a conduit

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 () is described which has an element () that reduces the whirl formation in the flowing medium.

Flowmeter with element for reducing the formation of turbulence in the flowing medium

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.

Device for determining at least one parameter of a flowing medium

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.

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.

Fiber-optic pressure sensor

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.

Device for measuring air flow, comprising a device for separating foreign particles

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.

Device for the separation of gas and liquid/solid particles in a mixture of gas and fluid/solid particles flowing in a line and method for the separation thereof

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.

Device for measuring at least one parameter of a flowing medium

Known devices for measuring the mass of a flowing medium can be impaired in their measurement precision by fluid components carried along in the medium. The device according to the invention has a ricochet body, which is disposed upstream of the measuring element and is at least partially encompassed by an outer ring, where the outer ring constitutes a section inside the outer ring that tapers in the flow direction in order to deflect fluid components, which are carried along in the flow, away from the measuring element by means of the ricochet body. The device is useful for measuring the mass of a flowing medium, in particular for measuring the intake air mass of internal combustion engines.

Protective device for a mass flow sensor disposed in an air intake channel

Devices for measuring at least one parameter of a medium flowing in a line, having an inlet conduit an outlet conduit, having the disadvantage in the prior art that liquids flowing into the inlet conduit can reach a measurement element and alter the measurement characteristic curve behavior of the measurement element. A device of the invention has, between the inlet conduit and outlet conduit, a deflection conduit with a separation element, by which the liquids are separated out and therefore do not reach the measurement element.

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Benningen, Germany

Thomas Lenzing