Abstract:
A piston has a piston body made of a material selected from any one of aluminum, an aluminum alloy, magnesium, and a magnesium alloy. An entire surface or a predetermined portion of the surface of the piston body is covered with a plasma oxide film.
Abstract:
A discharge valve (100) of a compressor is disclosed. The discharge vlave (100) contains a spring-loaded valve body (120). Valve body (120) is preferably made of nonferrous metal like aluminum or magnesium and is coated by a covering (110) of uniform thickness, the covering (110) beeing preferably made of plastic material like polyetheretherketone (PEEK) by insertion molding. By that way a wear resistant and light-weight discharge valve is produced.
Abstract:
A piston has a piston body made of a material selected from any one of aluminum, an aluminum alloy, magnesium, and a magnesium alloy. An entire surface or a predetermined portion of the surface of the piston body is covered with a plasma oxide film.
Abstract:
A compact and lightweight electric generator for portable power applications employs a new engine design and integration approach for reducing engine and generator weight. A unique flywheel alternator generates electrical power and provides inertia for the engine, pressurized air for cooling, and inertia for the alternator. An engine cowling provides rotating component protection, a fan shroud mechanism, cooling air ducts, and a cooling mechanism for handling large quantities of heat produced by rectified power conversion.
Abstract:
A piston-type compressor has gaskets located between a cylinder blocks and front and rear housings mated to the cylinder blocks. The front and rear housings are made of magnesium alloy, and cylinder blocks are made of aluminum. The gaskets are constituted of resilient material and contain white carbon or a mixture of white carbon and black carbon to provide a superior electrical non-conductivity. The gaskets electrically isolate the housings and cylinder blocks so as to prevent a galvanic corrosion at surfaces where the two different metals of the compressor components are jointed.
Abstract:
A crankcase for an internal-combustion engine is constructed with a crankcase top and bottom sections made of a light-metal material. Bearing points for a crankshaft and at least one cylinder space are provided. In the region of the bearing points for the crankshaft, respective parts are cast into the crankcase bottom and top sections. The cast-in parts are constructed of a material with a higher modulus of elasticity and a lower coefficient of thermal expansion than the light metal material for the crankcase bottom and top sections. The cast-in parts are constructed for each bearing point as separate, spatially mutually separated members.
Abstract:
Disclosed is an aluminum alloy suitable for high temperature applications comprised of at least 9 wt. % Si, 3 to 7 wt. % Ni, 1.5 to 6 wt. % Cu, at least one of the elements selected from Mg, Mn, V, Sc, Fe, Ti, Sr, Zn, B and Cr, the remainder aluminum and impurities.
Abstract:
A cast light metal piston for internal combustion engines is provided with a ceramic insert in those zones which are highly thermally stressed and/or for heat insulation. To form a high-strength bond between the light metal and the insert, high-strength fibers are embedded in the light metal in the zone adjoining the insert.