Abstract:
A reinforcing insert for an engine block formed of a lightweight material is provided which is positioned in the bearing saddle area of the block for increasing the strength and stiffness of the bearing saddle area to ensure a secure connection of the main bearing cap throughout engine operation thereby ensuring proper crankshaft support and operation. The reinforcing insert is formed of a material having a higher modulus of elasticity than a modulus of elasticity of the lightweight engine block material. The insert includes a lower transverse surface for positioning at a lowermost position in the engine block, an upper surface positioned farthest from the crankshaft, a first and second linear side surfaces for positioning on opposite sides of the crankshaft. The linear sides extend from the lower surface along respective planes in nonparallel relation to each other. The linear sides may extend either in a converging or a diverging manner from the lower surface. Alternatively, the insert may include two cylindrical inserts positioned in bores formed in the block on opposite sides of the crankshaft. These insert designs provide strengthening and stiffening of the block over an optimum area while permitting secure attachment of a main bearing cap to the lightweight block.
Abstract:
The present invention addresses the need for a liner with a hard inner surface and a machinable outer surface for use in a pump for abrasive or corrosive materials. According to one embodiment, the present invention provides technical advantages not previously seen in a corrosive or abrasive fluid pump liner comprising a cylindrical sleeve and a cylindrical shell around the sleeve, the shell comprising iron.
Abstract:
A cylinder block has a cylinder block body and a cylinder liner block mounted by casting in the cylinder block body. The cylinder liner block is formed from a material having a rigidity larger than that of the cylinder block body, and the cylinder liner block comprises a liner section mounted by casting in position in a cylinder barrel portion of the cylinder block body, and a reinforcing wall section mounting by casting in position in a bearing wall of a crank case portion of the cylinder block body in a. Thus, it is possible to increase the wear resistance of cylinders in the cylinder block, as well as to provide an increase in performance by reductions in vibration and noise of the engine including the cylinder block, and to provide reductions in size, weight and cost of the cylinder block by a reduction in thickness of the bearing walls.
Abstract:
A main bearing cap for an internal combustion engine consists of an aluminum alloy with a steel core (6). The cap has a supporting surface (2) for the bearing shell (3). The supporting surface is the outer surface of a 3 mm thick aluminum layer (10) outside the steel core.
Abstract:
A method of making a cast dual-metal monoblock, by (i) casting an iron-based insert to define walls for one or more chambers or passages for each of combustion, piston reciprocation, gaseous induction and gaseous exhaust; (ii) forming a sand core wrapping directly about said insert to cover such insert except for the extremities of the walls defining the passages for gaseous induction and exhaust and the chamber for piston reciprocation, such extremities being remote from the walls defining the combustion chamber; and (iii) die casting an aluminum-based metal jacket about the assembly of said insert and core wrapping to complete the dual-metal monoblock. Advantageously, in step (ii), there is further included the formation of a top sand core assembly for defining one or more oil and/or valve train passages or chambers, the top sand core assembly being stationed to rest on the insert during casting of the jacket.
Abstract in simplified Chinese:本发明的目的在于,改善冷媒泄漏而达到提升压缩机的性能,并且改善耐久性而提升可靠度,以提供高效率的压缩机,本发明之解决手段为一种压缩机,系具备:由于压缩机的内部构成有压缩空间之汽缸所构成之压缩组件;连通于汽缸内的压缩空间之吸入孔及送出孔;封闭汽缸的开口之支撑构件;由形成在作为支撑构件的轴承之主轴承所支撑而旋转之旋转轴;与旋转轴的轴方向交叉之一面,于上死点及下死点之间连续倾斜,且配置于汽缸内而借由旋转轴而旋转驱动,并将从吸入孔所吸入的流体加以压缩,而从送出孔送出之压缩构件;配置于吸入孔及送出孔之间而抵接于压缩构件的一面,并将汽缸内的压缩空间区隔为低压室及高压室之叶片;及设置于与压缩构件为相反侧之轴承(主轴承)端部,且抵接于旋转轴之轴封体。
Abstract:
내연 기관용 실린더 슬리브가 제안되었다. 실린더 슬리브의 외측면이 그 전체 축방향 길이에 걸쳐 평탄화된 구역(61)을 포함하며, 실린더 슬리브가 거친 주조 슬리브로서 형성되고, 그 외측면이 그 전체 축방향 길이에 걸쳐 형성되며 언더컷을 갖는 복수의 돌기를 구비한 거친 구역을 포함하므로, 엔진 구동 시 발생하는 연소열의 충분한 배출이 보장된다.