摘要:
An electrochemical measuring sensor for determining the oxygen content of gases, such as exhaust gases of internal combustion engines, includes a housing having an annular sealing seat defined on an inner surface thereof; a sensor element which is comprised of a solid electrolyte body which is oxygen-ion conducting, which has a form of a tube having a closed end and which has an annular shoulder provided thereon; and a seal ring positioned between the annular sealing seat of the housing and the annular shoulder of the solid electrolyte body, and including a plurality of resilient elements distributed thereon. Each of the plurality of resilient elements has a lower portion and an upper portion angled toward the housing, and the seal ring has a clear width so that each lower portion rests on and is mechanically prestressed against the annular shoulder of the sensor element and each upper portion is mechanically prestressed against the housing, whereby a tight seal of the sensor element to the housing is provided and the sensor element is maintained within the housing under mechanical prestress and secure against relative rotation.
摘要:
An arrangement of a sensor element of an electrochemical measuring sensor in a metallic housing is proposed, wherein the sensor element (13) in the form of a tube closed at one end rests with a metallic sealing ring (18) on a seal seat (16) implemented on the housing. The seal seat (16) is designed as a raised circular ring surface having a radius (r), with the sealing ring (18) orienting itself tangentially with respect to the radius (r).
摘要:
A gas measurement sensor (10) which sealingly encloses an axially oriented sensor (27) having an elongated, planar shape in the longitudinal bore (19) of its metal housing (11); while the section (27/1) on the gas measuring side of the sensor (27) has at least one sensor element (38) and possibly heating elements, the end section (27/3) on the connecting side is provided with layered contact surfaces (36), which are in contact with the sensor elements (38)/heating elements via strip conductors (37). A connector plug (43) surrounding the sensor (27) on the connecting side consists of a contact element support (44), an opposite wall (45), contact elements (46) and an annularly-shaped spring element (47); because of its mechanical pre-stressing, the spring element (47) presses the contact elements (46) of the contact element support (44) and of the opposite wall (45) against the contact surfaces (36) of the sensor (27). On the connecting side the contact elements (46) have connecting points (56) for connecting conductors (57). The connector plug (43) allows the installation on the sensor element (27) without damage to the sensor contact surfaces (36) and possible coatings on connector plug contact elements (46).
摘要:
A sensor device, particularly for determining the oxygen content in exhaust gases of internal combustion engines, having a sensor element that is surrounded gas-tight by a seal and fixed in a housing. The seal (19) is inserted as a pre-sintered, deformable sealing body (19') into the housing (12), between a ceramic molded body on the side of the measured gas and a ceramic molded body on the connection side (18, 20); the pre-sintered sealing body (19') can be deformed under pressure. The ceramic molded parts (18, 20) and the sealing body (19') have respective axially-extending throughgoing holes (32, 42, 52). The sealing body (19') has formed-on structures that narrow the cross section of the throughgoing hole (42) and are deformed by the sensor element (22) when the sensor element (22) is inserted such that the sensor element (22) is stopped, arrested or fixed in the installed position in the throughgoing hole (42) by the formed-on structures. The facing end faces of the ceramic molded parts (18, 20) and of the sealing body (19') each have form-fitting engaging elements that engage one another and rest against the opposite, touching end faces, which engaging elements orient the ceramic molded parts (18, 20) and the sealing body (19') radially such that the respective throughgoing holes (32, 42, 52) extend in alignment with one another.
摘要:
A seal for a sensor element of a gas sensor for determining the oxygen content in gases including exhaust gases of an internal combustion engine, which seal seals the sensor element in a longitudinal bore of a housing, the seal including a sealing stack which is positioned within the longitudinal bore of the housing and around the sensor element in use and which is comprised of two sealing bodies and an additional seal positioned between the two sealing bodies. The two sealing bodies are comprised of a pre-sintered ceramic material. The additional seal is comprised of a pre-pressed powder material and has a porosity which is lower than that of the two sealing bodies. The two sealing bodies and the additional seal are compressed together within the longitudinal bore in use, whereby at least the additional seal is deformed so that the sensor element is sealed in a gap-free manner within the longitudinal bore. The pre-pressed powder material of the additional seal may consist essentially of a ductile metal, which may be one of nickel or copper, or graphite which may be fiber-reinforced.
摘要:
The invention proposes a measuring-probe arrangement for detecting gases flowing in a gas conduit, especially exhaust gases flowing in an exhaust conduit of internal combustion engines. The measuring-probe arrangement has a measuring element (13) which is surrounded in sealing fashion by a housing (11). The section of the measuring element (13a) located at the measured-gas end of the measuring-probe projects from the housing (11) and is surrounded with a clearance by a protective tube (21) which is fixed by one end section on the housing (11) and has one or more openings (22) for the measured gas. The measuring probe (10) is arranged in such a way in the gas conduit (30) that the gas opening (22) is arranged on that side of the protective tube (21) which faces away from the flow (35) of the measured gas.
摘要:
In a pressure sleeve in particular a vibration pickup, an abutment surface is formed as a circumferential ring at a location radially spaced from a central point. Therefore, the pressure sleeve can be fully pressed against the structure to be monitored by a mounting screw. Therefore a sensor provided with the pressure sleeve can approximately linearily extending and disturbance measuring signals.
摘要:
A pressure equalizing element for a housing comprises a head section, a body section, and a duct, through which air can pass and which extends through the head section and the body section. A drying element, which has a desiccant that draws moisture from air flowing through the duct, is arranged in the duct. The disclosure further relates to a battery having said pressure equalizing element and to a motor vehicle having said battery.
摘要:
A knock sensor for indirect or direct fixing to an internal combustion engine has a housing (10) with a pressure sleeve (11) on the outer side of which a piezoceramic disk, a seismic mass (16), the contact disks (14), and the insulating disks (13) are arranged. The insulating disks (13) or the piezoelectrical disk (15) are or is made slightly electrically conductive so that the voltage spikes which occur due to the pyroelectrical effect can be easily eliminated. In this way, faulty measuring and interference can be avoided in the electrical circuit connected to the knock sensor.
摘要:
A housing having an inner part radially inside of an outer part so as to form a hollow space therebetween. The outer part has two opposite end portions which radially extend inward toward the inner part so as to further define the hollow space. The end portions and the inner part form interengaging projections and grooves. The inner and outer parts are composed of different materials with different heat expansion coefficients. The interengaging projections and grooves are thermally expanded against each other to effect a moisture-tight sealing of the hollow space.