Abstract:
The invention relates to a method for the assembly of a balance shaft unit for use in motor vehicles. The assembly includes a housing having a bearing section, a rotating component and at least one rolling element bearing for the axially fixed journaling of the rotating component in the bearing section of the housing. The rolling element bearing has a first ring section associated with the rotating component and a second ring section associated with the bearing section. First, the rolling element bearing is axially fixedly installed on the rotating component or in the bearing section. Next, the rotating component is cooled and/or the housing part is heated. Finally, the rotating component is introduced into the bearing section and is held until a temperature compensation has taken place between the rotating component and the housing such that a shrink-fit connection is established.
Abstract:
The present invention relates to a balance shaft unit for mass balancing for an internal combustion engine of a motor vehicle including at least one balance shaft having at least one balance weight and a housing part in which the balance shaft is journaled. A first gear is associated with the balance shaft and meshes with a second gear. An introduction passage is formed in the housing part through which, starting from an assembly opening, at least one of the two gears can be introduced into the interior of the housing part, with the introduction passage extending perpendicular to the longitudinal axis of the balance shaft. The first gear and the second gear are arranged sequentially with respect to the direction of extent of the introduction passage. The housing part surrounds the periphery of the assembly opening in one piece, with the length of the assembly opening at the outer side of the housing part in a normal plane to the longitudinal axis of the balance shaft being smaller than the sum of the diameters of the two gears. A particularly high stability is hereby reached.
Abstract:
The present invention relates to a balance shaft unit for mass balancing for an internal combustion engine of a motor vehicle including at least one balance shaft having at least one balance weight and a housing part in which the balance shaft is journaled. A first gear is associated with the balance shaft and meshes with a second gear. An introduction passage is formed in the housing part through which, starting from an assembly opening, at least one of the two gears can be introduced into the interior of the housing part, with the introduction passage extending perpendicular to the longitudinal axis of the balance shaft. The first gear and the second gear are arranged sequentially with respect to the direction of extent of the introduction passage. The housing part surrounds the periphery of the assembly opening in one piece, with the length of the assembly opening at the outer side of the housing part in a normal plane to the longitudinal axis of the balance shaft being smaller than the sum of the diameters of the two gears. A particularly high stability is hereby reached.
Abstract:
A method for manufacturing a semiconductor device includes forming a buried layer of a semiconductor substrate. An active region is formed adjacent at least a portion of the buried layer. A first isolation structure is formed adjacent at least a portion of the buried layer. A second isolation structure is formed adjacent at least a portion of the active region. A base layer is formed adjacent at least a portion of the active region. A dielectric layer is formed adjacent at least a portion of the base layer, and then at least part of the dielectric layer is removed at an emitter contact location and at a sinker contact location. An emitter structure is formed at the emitter contact location. Forming the emitter structure includes etching the semiconductor device at the sinker contact location to form a sinker contact region. The sinker contact region has a first depth. The method may also include forming a gate structure. Forming the gate structure includes etching the sinker contact region thereby increasing the first depth of the sinker contact region to a second depth.
Abstract:
A method for manufacturing a semiconductor device includes forming a buried layer of a semiconductor substrate. An active region is formed adjacent at least a portion of the buried layer. At least part of the active region is removed to form a shallow trench opening. A dielectric layer is formed proximate the active region at least partially within the shallow trench opening. At least part of the dielectric layer is removed to form a collector contact region. A collector contact may be formed at the collector contact region. The collector contact may be operable to electrically contact the buried layer.
Abstract:
An adjustment device for adjusting the relative angular position of a camshaft with respect to a crankshaft within a specified angle range, the adjustment device having a device for emergency operation of the adjustment device. The device for emergency operation includes a freewheel device which can be activated in an emergency mode of the adjustment device and, in an activated state, is able to allow an adjustment movement of the camshaft with respect to the crankshaft from the current position in a first direction towards an emergency running position and to block an adjustment movement in a second direction opposite thereto.
Abstract:
A system and method for passively estimating range and angle of a source are disclosed. The source may be any wave source including radio-frequency (RF), optical, acoustic or seismic sources. In some RF embodiments, the system includes a single aperture antenna to simultaneously receive RF signals from the RF source through a plurality of sub-apertures, and a signal processor to perform a proximity test using samples simultaneously collected from the sub-apertures to determine whether or not to calculate angle and range estimates to the source based on either a curved wavefront assumption or a planar wavefront assumption.
Abstract:
An attachment of a vehicle axle to an axle suspension of a vehicle, such as a utility vehicle, includes a first plate element arranged on the upper side of the vehicle axle, a second plate element arranged on the lower side of the vehicle axle, and at least one spring clip, which connects the vehicle axle to an axle spring suspension of the axle suspension via the plate elements. To simplify assembly and mounting of this attachment, at least one web which is attached on its upper side to the first plate element and on its lower side to the second plate element may be arranged on each side of the vehicle axle so that the vehicle axle is completely surrounded and enclosed by the webs and the plate elements.
Abstract:
A composite laminate or layer structure includes a substrate (2) and a cover layer (4) bonded thereon. The substrate is made up of at least one layer (3) of fiber-reinforced synthetic material. The cover layer includes at least one layer (5) of metal fibers and/or threads (6), and a metal sheet (7) forming the outer surface skin (8) of the layer structure. The metal sheet is bonded by soldering or sintering onto the metal fibers and/or threads (6), while the layer of metal fibers and/or threads in turn is bonded to the underlying fiber-reinforced synthetic material (3) by being mutually and integrally permeated by a synthetic resin matrix and bonding material. Also, the metal fibers and/or threads (6) may be intermeshed with the fibers of the synthetic material (3). To provide improved bonding at both opposite sides thereof, the layer (5) of metal fibers and/or threads (6) has a lower porosity on the side adjoining the metal sheet, and a higher porosity on the side adjoining the fiber-reinforced synthetic material (3) of the substrate.
Abstract:
A blade for a fluid flow machine such as a jet turbine engine includes a blade body (2) that is to be exposed to the fluid flow and therefore is subject to damage by erosion due to abrasive particle entrained in the fluid flow and due to thermal loading. The blade body (2) is a layered body including base layers (6) of a fiber reinforced synthetic material and a metallic cover layer (7) applied as an erosion protective layer onto at least a portion or the entirety of the surface of the base layers (6). The cover layer (7) includes metallic fibers or threads (9A, 9B) which are bonded with the fiber reinforced synthetic material of the adjacent base layers (6) by the same synthetic resin binder material permeating through and forming a matrix for all the layers (6 and 7). The metallic fibers or threads (9A, 9B) embedded in a synthetic resin matrix are characterized by a high degree of erosion resistance and a good tolerance for defects in the case of local impact or erosion damage. The blade may be a blade of a fan or compressor stage of a jet turbine engine. A method for manufacturing and a method for repairing such blades involves exposing outer layers of fibers of a blade, and applying thereon a cover layer of metallic fibers or threads. An additional outer protective layer may be applied on the cover layer.