摘要:
An intake silencer is designed as a broadband silencer for noises causes by intake of combustion air into internal combustion engines. To achieve the broadband effect, an axial sequence of resonator chambers with different volumes is formed by partitions which extend transversely to the intake pipe in a resonator that surrounds the intake pipe Each resonator chamber communicates through openings in the wall of the intake pipe with the air sucked through the intake pipe. By matching the open surface area of the openings, the thickness of the wall of the intake pipe in the area of the openings and the volume of the resonator chambers, a continuous broadband silencing may be set even over a wide frequency range, the range of practical interest in the present application extending combustion from to 1 to 10 kHz. In motor vehicles with an internal combustion engine, a supercharger and an air charge cooler, the intake silencer is advantageously arranged in the pressure pipe joint of the supercharger, directly behind it or integrated therein, but in any case at a certain distance upstream of the air charge cooler.
摘要:
A torsional vibration damper comprises a plurality of arcuate centrifugal mass segments arranged within a radially outer hub ring through which a shaft extends with spring segments therebetween. The centrifugal mass segments may be interconnected in a predetermined arrangement to each other with further spring members. The resonant frequency and the stiffening behavior of the spring characteristics of the damper increase as a function of shaft speed. Additionally, the torsional vibration damper absorbs axial and radial vibrations by supporting the centrifugal mass segments with the spring segments.
摘要:
The invention relates to a surface bearing 1 comprising a rubber strip or plate material penetrated by hollow channels 3 and cavities 2. The cavities 2 and hollow channels 3 all lie in a single surface at least essentially parallel or complementary in shape to the principal surface of the sheet material, each cavity 2 being penetrated in each case by only one hollow channel 3. The hollow channels 3 are open on at least one side and have a clear cross-sectional area which is at least a quarter of the largest cross-sectional area of the cavities 2 penetrated by this hollow channel 3. The hollow channels 3 can extend non-parallel to at least one longitudinal axis or to the longitudinal axis of the surface bearing, thus, for example, can form an angle of 90.degree. or 45.degree. with the latter, while they are parallel or non-parallel to one another. However, in the case of polygonal or circular surface bearings, they can also be aligned so as to extend radially to the center without intersecting or touching in the center, i.e. can also be open on only one side. An opening 6 formed in the center of the novel surface bearing 1 does not impair the bearing properties, instead offering numerous constructional possibilities. Overall, cushioning soft of heavy loads, from from the buckling effect, is obtained, substantial acoustic decoupling being achieved.
摘要:
A preformed part made of plastics material, especially a sheet-like plastics part made by injection molding is formed to be integral with elastic portions. The elastic portions serve as seals, as for feed-through holes in the plastics part. A ring-shaped circular closed protruding edge or ring-shaped rib, formed integrally with the plastics part around the regions to be coated with rubber, limit the region where elastic material is deposited to integrate with the plastics material. An annular region around rib has a radial span around the recesses, bore holes or edges into which the rubber material is injected, and enables insertion of the elastic material despite the presence of differential thermal expansion between the plastic part and a metal forming tool to shape the elastic material.
摘要:
Torsionally resilient coupling with, between two coupling halves, at least one movement-transforming intermediate element which transforms a rotation into a translation and is connected frictionally in rotation to one of the two coupling halves and is connected in translation to a connecting element which is in turn articulated pivotably to a resilient intermediate element which is in turn connected frictionally and integrally in rotation to the respective other coupling half. In this coupling a maximum degree of symmetry of the forces acting is achieved, and shear forces which lead to an asymmetrical stressing of the resilient intermediate elements are eliminated in that the journal pins or journal bolts by which the connecting element if articulated to the resilient intermediate element are guided in lateral slot slits.
摘要:
A rotationally elastic coupling with two half-couplings can be twisted relative to one another, these half-couplings being connected with one another so as to transmit forces by means of a sprung intermediate link and by means of a movement-converting intermediate link which converts a rotation into a translational movement or, vice versa, a translational movement into a rotation. At least one sheet metal support is provided which is in contact at a radially outward position with one of the sprung intermediate links which in turn is supported rotationally solidly and frictionally at a radially inward position with one of the two half-couplings. The sheet metal support is subjected to forces directly or by means of a coupling element of the movement converting intermediate link, in particular an eccentric or a crank, this movement converting intermediate link being rotationally and rotationally solidly connected to the other half-coupling. Using such a coupling, practically linear and soft spring characteristics can be produced for high torques over twist angle ranges of far beyond 30.degree..
摘要:
A sealing ring of elastic material, more particularly for a plug-in type pipe joint made up of two concentrically interfitting pipe elements of a mineral material in the case of which the sealing ring can be pre-assembled by insertion into the outer pipe element or socket before the insertion of the inner pipe element or spigot. The sealing ring has a substantially V-shaped axial section profile with the formation of two annular lips consisting of a support lip and a sealing lip. The sealing ring also has a sealing foot, which is opposite to the angle included by the support lip and the sealing lip and said sealing ring can be fixed by its sealing foot and/or by a holding part molded additionally on the sealing ring, by dint of an annular groove constructed in the inner wall of the socket in order to prevent axial displacement of the sealing ring in the insertion direction of the spigot. The sealing ring on insertion of the spigot into the socket can be inwardly axially tilted through the radial plane defined substantially by the sealing foot of the sealing ring in such a manner that the support lip and the sealing lip stand substantially symmetrically with respect to the radial plane. When the spigot is inserted the radial clamping and distortion of the sealing ring makes a sealing engagement with the external casing of the spigot with respect to external pressure, the sealing lip makes sealing engagement with the external casing of the spigot with respect to internal pressure and the sealing foot makes sealing engagement with the floor of the annular groove or on the inner wall of the socket with respect to internal and external pressure.
摘要:
A joint for transmitting shifting forces from a gear-shifting system of a transmission to a transmission drive member includes a pair of joint parts (1, 2) frictionally locked to the transmission drive member and to the gear-shifting system, a coupling (3) mounted between the joint parts (1, 2) and an elastically deforming device. The elastic deforming device is a damper (4) substantially enclosing omnidirectionally the coupling (3) in such manner that when the joint is not transmitting shifting forces, the damper (4) keeps the coupling (3) spaced from the joint parts (1, 2).
摘要:
The invention relates to a directly hydraulically damping broadband damper designed as a sequence of Helmholtz resonators with elastomer/gas springs to damp pressure pulses in pressurized liquids and in the audible range frequencies, in particular in hydraulic servo systems.
摘要:
Apparatus for controlling and adjusting an arbitrary number of adjustment units for a motor vehicle includes an electro-pneumatic bus to which are connected in arbitrary sequence, both electrically and pneumatically, all the pertinent adjusting units. The electro-pneumatic bus is composed of at least one pneumatic adjustment pressure line and of at least one electric control signal line which may contain several conductors. While reference data from a central control electronics are applied through the electric control signal line of the electro-pneumatic bus, the individual adjusting units are connected through associated valves in the pneumatic system to the pneumatic adjustment pressure line of the electro-pneumatic bus. The adjusting units preferably are designed to be modular control loops. As a result the pneumatically driven adjusting members units not only two positions, but also they may be set and controlled in quasi-analogue manner.