Abstract:
Eine Brennkraftmaschine, insbesondere ein Boxermotor, weist ein in Kurbelwellenlagermitte längsgeteiltes Zylinderkurbelgehäuse (1) sowie eine Lagerbrücke (2) auf, welche über Zylinderkopfschrauben (9,10,9a,10a) mit dem Kurbelgehäuse (1) verbunden ist. Das Zylinderkurbelgehäuse (1) weist mit der Lagerbrücke (2) eine gemeinsame vertikale Trennebene auf (a,a). Beide Lagerbrückenhälften (2a,2b) sind einerseits über Lagerstuhlschrauben (7,8) miteinander verbunden und andererseits ist die Lagerbrücke (2) über Zylinderkopfschrauben (9,10,9a,10a) zwischen den zu beiden Seiten der Lagerbrücke angeordneten Kurbelgehäusehälften unter Bildung von Ölkanälen (15,16,17) gehalten. Über die Schrauben (9,10,9a,10a) sind gleichzeitig Zylinderköpfe am Kurbelgehäuse befestigbar.
Abstract:
A cylinder block (B C ) comprising a cylinder block body (1) and a cylinder liner block (B L ) filled in the cylinder block body (1) in a cast-in manner. The cylinder liner block (B L ) is formed from a material having a rigidity larger than that of the cylinder block body (1), and the cylinder liner block (B L ) comprises a liner section (4) filled in a cylinder barrel portion (1 U ) of the cylinder block body (1) in a cast-in manner, and a reinforcing wall section filled in a bearing wall of a crank case portion (1 L ) of the cylinder block body (1) in a cast-in manner. Thus, it is possible to increase the wear resistance of cylinders in the cylinder block (B L ), as well as to provide an increase in performance by reductions in vibration and noise of the cylinder block (B L ), and to provide reductions in size, weight and cost of the cylinder block (B L ) by a reduction in thickness of the bearing walls (13).
Abstract:
A method of making a cast dual-metal monoblock, by (i) casting an iron-based insert (10) to define walls for one or more chambers or passages (11,12,13) for each of combustion, piston reciprocation, gaseous induction and gaseous exhaust; (ii) forming a sand core wrapping (23) directly about said insert (10) to cover such insert (10) except for the extremities (17,18,19) of the walls defining the passages for gaseous induction and exhaust and the chamber for piston reciprocation, such extremities (17,18,19) being remote from the walls defining the combustion chamber (16); and (iii) die casting an aluminum-based metal jacket (35) about the assembly of said inset (10) and core wrapping (23) to complete the dual-metal monoblock.
Abstract:
A method of making a cast dual-metal monoblock, by (i) casting an iron-based insert (10) to define walls for one or more chambers or passages (11,12,13) for each of combustion, piston reciprocation, gaseous induction and gaseous exhaust; (ii) forming a sand core wrapping (23) directly about said insert (10) to cover such insert (10) except for the extremities (17,18,19) of the walls defining the passages for gaseous induction and exhaust and the chamber for piston reciprocation, such extremities (17,18,19) being remote from the walls defining the combustion chamber (16); and (iii) die casting an aluminum-based metal jacket (35) about the assembly of said inset (10) and core wrapping (23) to complete the dual-metal monoblock.
Abstract:
A component for wind turbines includes cast austempered ductile iron containing about 3.0 to about 3.8 weight percent carbon, about 1.9 to about 2.8 weight percent silicon, up to about 0.3 weight percent manganese, up to about 0.8 weight percent copper, up to about 2.0 weight percent nickel, up to about 0.3 weight percent molybdenum, about 0.03 to about 0.06 weight percent magnesium, less than about 0.05 weight percent chromium, less than about 0.02 weight percent vanadium, and less than about 0.01 weight percent sulfur. The component is preferably a drive shaft or gearbox component having a mass of more than about 3 tons. A method of manufacturing the component is also provided.
Abstract:
The present invention has an object to increase strength and stiffness of a compression mechanism and to prevent seizing thereof simultaneously. A scroll compressor 1 includes a compression mechanism 15 which compresses refrigerant. The compression mechanism 15 includes a fixed scroll 24 and a movable scroll 26. The fixed scroll 24 and the movable scroll 26 are formed of different materials. One of the two scrolls is a cast iron molding fabricated through semi-molten die casting, while the other is a grey iron casting. The grey iron casting has a tensile strength of greater than or equal to 250N/mm 2 and less than 300N/mm 2 .
Abstract translation:本发明的目的是提高压缩机构的强度和刚度,并且同时防止其卡住。 涡旋压缩机1包括压缩机构15,其压缩制冷剂。 压缩机构15包括固定涡旋盘24和动涡盘26.固定涡旋盘24和动涡盘26由不同的材料形成。 两个卷轴之一是通过半熔融压铸制造的铸铁模制件,而另一个是灰铸铁铸件。 灰铸铁的拉伸强度大于或等于250N / mm 2且小于300N / mm 2。
Abstract:
In an example, an engine 1 includes a pair of left and right aluminum side members 11, 12 extending along a crankshaft 5 and disposed on the left and right thereof, and a laterally extending cross member 13 provided between the side members 11, 12. The cross member 13 comprises an aluminum cross member body 14 provided between the side members 11, 12, and a cast-iron supporting member 17 formed with a semicircular supporting recess 15 on its top surface 16 for the crankshaft 5 to be fitted in at the lower half of its journal 4, and built in the cross member body 14 while leaving the top surface 16. The side members 11, 12 and the cross member body 14 are formed together through aluminum casting by using the supporting member 17 as an insert member. A notch 23 is formed at a lower end of the supporting member 17 below the supporting recess 15. Such an arrangement can prevent casting defects from occurring in casting a lower casing of a crankcase for supporting a crankshaft.