Abstract:
A compressor, which is adapted for use in an air-conditioning system of a motor vehicle, having a housing (2) and a compressor unit (1) arranged in the housing (2) for drawing in and compressing a coolant. The structural size of the compressor is reduced, while sufficient compressor capacity is ensured, as a result of manufacturing the housing (2) from a high-strength material and using a gas that has a high density even in the drawn-in state as the coolant.
Abstract:
A method and apparatus for pumping a coolant through a laser cavity to cool the laser. The apparatus has a titanium housing and a casing containing a rotatable titanium hollow shaft. A titanium impeller is located at one end of the shaft within the housing and rotates with the shaft to pump the fluid through a laser. Disposed within casing and attached to the shaft are a plurality of permanent magnets. External to the casing are stator windings through which current flows to create a magnetic field that rotates the permanent magnets, shaft and impeller. When the impeller is rotated, the coolant is passed through the housing and to the laser. The impeller also forces the fluid passing through the shaft and into the casing to cool and lubricate the pump. The magnets are encased in a titanium sleeve attached to the titanium shaft to prevent the coolant from contacting with the magnets.
Abstract:
A vacuum pump and a vacuum pump rotor blade that can effectively limit deposition of reaction products are provided. The vacuum pump includes a rotating shaft held rotationally, a drive mechanism for the rotating shaft, a first rotor blade made of a first material, a second rotor blade made of a second material having higher heat resistance than the first material, and disposed further toward a downstream side than the first rotor blade, and a casing enclosing the rotating shaft, the first rotor blade, and the second rotor blade. The second rotor blade is disposed, via a heat insulating portion, on the first rotor blade.
Abstract:
A bearing carrier has a bearing body including a first material. The bearing body has an exterior surface defining a bridge land with a finger cut and rotatably supports a first and second gear. The first and second gears intermesh with one another for pressurizing fluid traversing the gears between a fluid inlet and a fluid outlet defined in a housing enveloping the bearing carrier.The bridge land is defined in a second material integral with the first material. Methods fabricating a bearing carrier for a gear pump are also disclosed.
Abstract:
A bearing carrier has a bearing body including a first material. The bearing body has an exterior surface defining a bridge land with a finger cut and rotatably supports a first and second gear. The first and second gears intermesh with one another for pressurizing fluid traversing the gears between a fluid inlet and a fluid outlet defined in a housing enveloping the bearing carrier. The bridge land is defined in a second material integral with the first material.
Abstract:
Systems and methods are provided for forming an engine comprising a thermoset composite engine block. One example method includes reinforcing the engine block with a plurality of metal strips, wherein a first portion of the plurality of metal strips are positioned in a substantially transverse direction of the engine block and a second portion of the plurality of metal strips are positioned in a substantially longitudinal direction of the engine block. The plurality of metal reinforcing strips may provide additional reinforcement to the engine block.
Abstract:
A Titanium-Tantalum base shape memory alloy is provided which possesses high machinability and is suitable for repeated high temperature operation. The Titanium-Tantalum base shape memory alloy consists of 15 mol %-40 mol % Tantalum, additive elements, and the balance Titanium and impurities.
Abstract:
The invention concerns a production of precision castings by centrifugal casting, comprising the following steps: a) providing a centrifugal casting device having a rotor (1) being rotatable around an axis (A), and at least one crucible (8) being accommodated in the rotor (1) and at least one mold (4) being associated with said crucible (8) and being accommodated in a first radial distance (r1) from the axis (A), b) creating a metal melt (15) within the crucible (8), c) rotating the rotor (1) and thereby forcing the melt (15) by means of centrifugal forces from the crucible (8) into the mold (4), d) exerting a pressure on the melt (15) being forced into the mold (4) until the temperature of the solidifying melt (15) has reached a predetermined cooling-temperature in a range of 1300° to 800° C., wherein the pressure corresponds to the centrifugal force acting on the melt (15) at the moment when the mold (4) is completely filled times a factor of 1.0 to 5.0, and e) relieving the pressure when the temperature of the solidifying melt (15) is smaller than said predetermined cooling-temperature.
Abstract:
A sliding member for a compressor includes a base metal, a first layer and a second layer. The base metal is made of an aluminum-based metal. The first layer is formed on or over the base metal and made of a nickel-based plating layer containing at least one material of nitrogen (N), silicon (Si), titanium (Ti), chromium (Cr) and aluminum (Al) as an additive. The second layer is formed on the surface of the first layer and made of a diamond-like carbon layer containing the same additive as the additive contained in the first layer.
Abstract:
Disclosed is a MEMS device which comprises at least one shape memory material such as a shape memory alloy (SMA) layer and at least one stressed material layer. Examples of such MEMS devices include an actuator, a micropump, a microvalve, or a non-destructive fuse-type connection probe. The device exhibits a variety of improved properties, for example, large deformation ability and high energy density. Also provided is a method of easily fabricating the MEMS device in the form of a cantilever-type or diaphragm-type structure.