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1. WO2019223934 - GAS SENSOR HAVING A DEFLECTION SURFACE ON THE BASE HOUSING SIDE FOR THROTTLING THE FLUID FLOW

Publication Number WO/2019/223934
Publication Date 28.11.2019
International Application No. PCT/EP2019/059287
International Filing Date 11.04.2019
IPC
G01N 27/407 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
406Cells and probes with solid electrolytes
407for investigating or analysing gases
G01N 15/06 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
06Investigating concentration of particle suspensions
CPC
G01N 1/2252
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
02Devices for withdrawing samples
22in the gaseous state
2247Sampling from a flowing stream of gas
2252in a vehicle exhaust
G01N 15/0606
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
06Investigating concentration of particle suspensions
0606by collecting particles on a support
G01N 15/0656
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
06Investigating concentration of particle suspensions
0656using electric, e.g. electrostatic methods or magnetic methods
G01N 2015/0007
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
0007Investigating dispersion of gas
G01N 2015/0046
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
0042Investigating dispersion of solids
0046in gas, e.g. smoke
G01N 27/4077
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
403Cells and electrode assemblies
406Cells and probes with solid electrolytes
407for investigating or analysing gases
4077Means for protecting the electrolyte or the electrodes
Applicants
  • ROBERT BOSCH GMBH [DE]/[DE]
Inventors
  • RUBAS, Vojtech
  • KOTYNEK, Milan
  • SCHULTE AM HUELSE, Sebastian
Priority Data
10 2018 208 178.624.05.2018DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) GASSENSOR MIT EINER GRUNDGEHÄUSESEITIGEN UMLENKFLÄCHE ZUR DROSSELUNG DER FLUIDSTRÖMUNG
(EN) GAS SENSOR HAVING A DEFLECTION SURFACE ON THE BASE HOUSING SIDE FOR THROTTLING THE FLUID FLOW
(FR) CAPTEUR DE GAZ PRÉSENTANT UNE SURFACE DE DÉVIATION CÔTÉ BOÎTIER DE BASE POUR LA RÉDUCTION DE L'ÉCOULEMENT DU FLUIDE
Abstract
(DE) Gassensor (10), insbesondere Partikelsensor, zur Bestimmung mindestens einer Zustandsgröße eines Messgases, insbesondere der Partikelkonzentration im Abgas einer Brennkraftmaschine, mit einem Grundgehäuse (12) und einem am Grundgehäuse angeordneten Schutzrohrmodul (14), welches ein sich in eine Längsrichtung (16) erstreckendes Innenschutzrohr (18), in dem ein Sensorelement (58) anordenbar ist, und ein das Innenschutzrohr jedenfalls abschnittsweise umgebendes Außenschutzrohr (26) umfasst, wobei Messgas zwischen dem Außenschutzrohr und dem Innenschutzrohr hindurch einströmbar ist und in einem Umlenkbereich (37) zur Einströmung in das Innenschutzrohr umlenkbar ist, wobei der Umlenkbereich eine vom Grundgehäuse ausgebildete Umlenkfläche (42) umfasst, und wobei zwischen der Umlenkfläche und dem Innenschutzrohr ein Spalt (50) vorhanden ist, durch den Messgas in das Innenschutzrohr einströmbar ist, wobei die Umlenkfläche am Spalt den geringsten Abstand zum Innenschutzrohr in Längsrichtung aufweist.
(EN) The invention relates to a gas sensor (10), particularly a particle sensor, for determining at least one state variable of a measuring gas, particularly the particle concentration in the exhaust of an internal combustion engine, having a base housing (12) and a protective tube module (14) arranged on the base housing, which comprises an inner protection tube (18) extending in a longitudinal direction (16), in which a sensor element (58) can be arranged, and an outer protection tube (26) enclosing the inner protection tube at least in sections, wherein measuring gas can flow in between the outer protection tube and the inner protection tube and can be deflected in a deflection region (37) in order to flow into the inner protection tube, wherein the deflection region comprises a deflection surface (42) formed by the base housing, and wherein there is a gap (50) between the deflection surface and the inner protection tube, through which the measuring gas can flow into the inner protection tube, wherein the deflection surface has the smallest distance to the inner protection tube in the longitudinal direction at the gap.
(FR) L'invention concerne un capteur de gaz (10), en particulier un capteur de particules, pour déterminer au moins une grandeur d'état d'un gaz de mesure, en particulier la concentration en particules dans le gaz d'échappement d'un moteur à combustion interne, présentant un boîtier de base (12) et un module tubulaire de protection (14) disposé au niveau du boîtier de base, qui comprend un tube de protection interne (18) s'étendant dans une direction longitudinale (16), dans lequel peut être agencé un élément capteur (58), et un tube de protection externe (26) entourant au moins en partie le tube de protection interne, le flux de gaz de mesure pouvant s'écouler entre le tube de protection externe et le tube de protection interne et pouvant être dévié dans une zone de déviation (37) pour entrer dans le tube de protection interne, la zone de déviation comprenant une surface de déviation (42) formée par le boîtier de base et une fente (50) se trouvant entre la surface de déviation et de tube de protection interne à travers laquelle le flux de gaz de mesure peut entrer dans le tube de protection interne, la surface de déviation présentant la distance la plus petite par rapport au tube de protection interne dans la direction longitudinale au niveau de la fente.
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