Abstract:
A compressor includes a swash plate, and a shoe connected to an outer periphery of the swash plate. A surface of the swash plate slides upon a flat surface of the shoe. A sliding film is applied to the surface of the swash plate. The sliding film is formed of binder resin which contains a solid lubricant and titanium oxide powder. This allows the surface of the swash plate and the flat surface of the shoe to smoothly slide upon each other.
Abstract:
The blade structure of a wind turbine which has enough strength for sporadic large load and increased durability. The blade can be formed into a thinner blade profile, with which blade performance is improved, increased efficiency of the wind turbine is attainable, and the noise induced by Karman vortex street is reduced. The blade is made of metal and formed into a one-piece blade or a split-type blade consisting of a main blade body made of metal and a rear end member made of metal other than that of the main blade body, the rear end member being fixed to the rear end of the main blade body, dentation being formed in the trailing edge part of the blade along the length thereof, the dentation being shaped in a serration of triangular teeth, of trapezoidal teeth, or of sawteeth, the ratio(h/&dgr;) of the tooth height h to the thickness &dgr; of the boundary layer developed on the surface of the blade is: h/&dgr;=1.0˜10.0, and the ratio (h/p) of the tooth height h to the pitch p is: h/p=0.5˜5.0.
Abstract translation:风力涡轮机的叶片结构,其具有足够的强度用于零星大负载和增加的耐用性。 叶片可以形成为更薄的叶片轮廓,叶片性能得到改善,风力涡轮机的效率提高,并且由卡门涡街引起的噪声降低。 叶片由金属制成并形成为由金属制的主叶片主体和除了主叶片主体以外的金属制成的后端部件构成的单件叶片或分割型叶片,后端部件 固定在主叶片本体的后端,齿形沿其长度形成在叶片的后缘部分中,齿形被成形为三角形齿,梯形齿或锯齿的锯齿形,该比( h /δ= 1.0〜10.0,齿高h与间距的比(h / p)为h / delta = 1.0〜10.0, p为:h / p = 0.5〜5.0。
Abstract:
The blade structure of a wind turbine is provided which has enough strength for sporadic large load and increased durability. The blade can be formed into a thinner blade profile, with which blade performance is improved, increased efficiency of the wind turbine is attainable, and the noise induced by Karman vortex street is reduced. The blade is made of metal and formed into a one-piece blade or a split-type blade consisting of a main blade body made of metal and a rear end member made of metal other than that of said main blade body, the rear end member being fixed to the rear end of said main blade body, dentation being formed in the trailing edge part of the blade along the length thereof, the dentation being shaped in a serration of triangular tooth, of trapezoid tooth, or of sawtooth, the ratio (h/null) of the tooth height h to the thickness null of the boundary layer developed on the surface of the blade is: h/nullnull1.0null10.0, and the ratio (h/p) of the tooth height h to the pitch p is: h/pnull0.5null5.0.
Abstract translation:提供了一种风力涡轮机的叶片结构,其具有足够的强度用于零星的大负载和增加的耐久性。 叶片可以形成为更薄的叶片轮廓,叶片性能得到改善,风力涡轮机的效率提高,并且由卡门涡街引起的噪声降低。 叶片由金属制成,并形成为由金属制的主叶片主体和由所述主叶片主体以外的金属制成的后端部件构成的单件叶片或分割型叶片,后端部件 固定在所述主叶片本体的后端,所述牙齿沿着其长度形成在所述叶片的后缘部分中,所述牙齿被成形为三角形齿,梯形齿或锯齿形的锯齿形,所述比例( h /δ= 1.0〜10.0,齿高h与间距的比(h / p)为h / delta = 1.0〜10.0, p为:h / p = 0.5〜5.0。
Abstract:
An oscillating centrifugal pump is disclosed which has a housing, an impeller and a magnetic drive. The housing has a longitudinal axis, having a front end and a rear end that are spaced apart on the longitudinal axis. The housing includes a pumping chamber within and at the front end of the housing. The pumping chamber is created by a continuous transverse front wall that closes the pumping chamber at the front end of the housing, a transverse rear wall axially-spaced from said transverse front wall and has a central opening, and a longitudinal closed side wall which is between the front and rear transverse walls. The housing is closed except for an inlet in the housing that is outside of and is axially spaced from the pumping chamber. An outlet is provided in the longitudinal side wall of the pumping chamber, and the housing is free of mechanical bearings, flexing or external seals or apertures that lead to the exterior of the housing except for said inlet and outlet. The impeller is located in the pumping chamber and has an axial inlet and a radial outlet and a flow passage between the impeller inlet and outlet. The impeller is mounted on an elastic support, which provides limited freedom of angular oscillation for the impeller about the longitudinal axis of the housing.
Abstract:
A structural member made of titanium or titanium alloy has a metal structure at its surface layer portion formed of a plurality of kinds of .beta.-phases of different characteristics which are present in combination.
Abstract:
A piston for an internal combustion engine and method of construction thereof are provided. The piston includes an upper crown formed at least in part by a first metal material and a thermally insulating insert. The upper crown has an upper wall forming an upper combustion surface and a ring belt region. The upper combustion surface is formed at least in part by the thermally insulating insert. The thermally insulating insert has a base surface with pores extending upwardly therein. The first metal material is infused and solidified in the pores, with the first metal material forming a first bonding surface. The piston further includes a body portion formed from a second metal material. The body portion provides pin bosses having coaxially aligned pin bores and diametrically opposite skirt portions. The body portion has a second bonding surface bonded to the first bonding surface of the first metal material.
Abstract:
A light-weight, high-strength insulating compressor component formed via additive manufacturing is provided. The component may have at least one interior region comprising a lattice structure that comprises a plurality of repeating cells. A solid surface is disposed over the lattice structure. The interior region comprising the lattice structure minimizes or reduces transmission of at least one of thermal energy, sound, or vibrational energy through the component. Methods of making such compressor components via additive manufacturing processes are also provided.
Abstract:
A light-weight, high-strength compressor component having at least one fluid delivery feature that is formed via additive manufacturing is provided. The component may have at least one interior region comprising a lattice structure that comprises a plurality of repeating cells. A solid surface is disposed over the lattice structure. The interior region comprising the lattice structure has at least one fluid delivery feature for permitting fluid flow through the body portion of the light-weight, high-strength compressor component. The fluid delivery feature may be a flow channel, a fluid delivery port, a porous fluid delivery feature, or the like that serves to transfer fluids through the component, such as refrigerant and/or lubricant oils. Methods of making such compressor components via additive manufacturing processes are also provided.
Abstract:
In a spark ignition engine, a thermal insulation thin layer is formed over a wall surface, facing an inside of a combustion chamber, of a base material forming the combustion chamber, and for a thermal conductivity λ [W/(m·K)], a thermal diffusivity κ [mm2/s], and a thickness L [μm] of the thermal insulation thin layer, L≧16.7×λ and L≦207.4×(κ)0.5 are satisfied. With such a configuration, a heat loss Q_total escaping from gas in a cylinder to the wall of the combustion chamber over all strokes can be reduced, and the thermal efficiency can be improved without inducing degradation of knocking due to an increase in an amount of heating Q_intake of the gas in the cylinder during an intake stroke.
Abstract:
Although modern diesel fuel formulations are intended to reduce emissions of diesel engines, at least some of those modern fuels tend to have relatively low lubricity levels. The control valve assemblies described herein help to minimize any increased wear that would otherwise result from the use of such low lubricity fuels by providing a valve element, a valve guide, and an insert. The valve element is received within the valve guide and is moveable between an open position and a closed position. The insert forms a first sealed interface and a second sealed interface with the valve element and the valve guide. When the valve element is in the closed position, both of the first sealed interface and the second sealed interface are engaged. When the valve element is in the open position, only one of the first sealed interface and the second sealed interface is engaged.