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    • 11. 发明授权
    • Wrist pin, piston assembly and method for making same
    • 腕针,活塞组件及其制作方法
    • US5076149A
    • 1991-12-31
    • US624048
    • 1990-12-07
    • Robert G. Everts
    • Robert G. Everts
    • F16J1/18
    • F16J1/18Y10T29/49266Y10T403/32885Y10T74/2162
    • A piston assembly is disclosed having a wrist pin for pivotably attaching a connecting rod to a piston for use in an internal combustion engine. The wrist pin is formed from an elongated circular cylindrical body having a pair of deformable sections formed adjacent each end and a relatively hard middle section therebetween. The wrist pin is sized for insertion along a longitudinal axis defined by a pair of coaxially aligned, spaced apart bores formed in diametrically opposed portions of the piston. The deformable end sections are adapted to be deformed sufficiently to engage the bores of the piston to limit the axial movement therebetween. The relatively hard middle section spans between the bores in the piston for pivotably engaging one end of the connection rod.
    • 公开了一种活塞组件,其具有用于将连杆可枢转地连接到用于内燃机的活塞的腕销。 腕针由细长的圆柱体形成,其具有邻近每个端部形成的一对可变形部分和在它们之间的相对硬的中间部分。 所述腕针的尺寸适于沿着由形成在所述活塞的直径相对的部分中的一对同轴对齐的间隔开的孔限定的纵向轴线插入。 可变形的端部部分适于变形以充分接合活塞的孔以限制它们之间的轴向移动。 相对较硬的中间部分跨越活塞中的孔之间,以可枢转地接合连接杆的一端。
    • 18. 发明申请
    • PISTON WITH KEYSTONE SECOND RING GROOVE FOR HIGH TEMPERATURE INTERNAL COMBUSTION ENGINES
    • 带键盘的活塞用于高温内燃机的第二环槽
    • US20150337959A1
    • 2015-11-26
    • US14286328
    • 2014-05-23
    • Federal-Mogul Corporation
    • Norbert G. Schneider
    • F16J9/12F02F3/00
    • F16J9/12F02F3/00F02F3/0015F02F2200/00Y10T29/49266
    • A piston for a high temperature internal combustion engine is provided. The piston includes an upper wall, base wall, outer rib, and inner rib defining a cooling chamber therebetween, and a plurality of ring grooves formed in the outer rib. Only the second ring groove is formed with the keystone cross-section, and all of the other ring grooves are formed with the conventional rectangular cross-section. Thus, the piston can be formed with low manufacturing costs and can also provide exceptional performance when used in high temperature combustion engines, wherein the temperature at the first ring groove is greater than 280° C., and thus prevents carbon from depositing or burns off any carbon deposits, but the temperature at the second ring groove is between 200° C. and 280° C., in which case carbon deposits can form and cause the piston ring to stick.
    • 提供了一种用于高温内燃机的活塞。 活塞包括在其间限定冷却室的上壁,底壁,外肋和内肋,以及形成在外肋中的多个环槽。 只有第二环槽形成有梯形截面,并且所有其它环形槽都以常规的矩形横截面形成。 因此,可以以低制造成本形成活塞,并且当在高温内燃机中使用时也可以提供出色的性能,其中第一环槽处的温度大于280℃,因此防止碳沉积或燃烧 任何碳沉积物,但是第二环槽的温度在200℃和280℃之间,在这种情况下,碳沉积物可以形成并使活塞环粘结。