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    • 2. 发明授权
    • Light alloy piston
    • 轻合金活塞
    • US4691622A
    • 1987-09-08
    • US785319
    • 1985-10-07
    • Wilfried SanderGunder EssigErich Wacker
    • Wilfried SanderGunder EssigErich Wacker
    • F02F3/02F16J1/02F16J1/08F16J1/04
    • F02F3/022F02F3/027F16J1/02F16J1/08F05C2201/0448
    • In a light alloy piston each of the load-carrying skirt surfaces is divided by a depression into two load-carrying partial shaft surfaces.In order to reduce the friction losses and the consumption of lubricant the depth of the depression (8, 9) between the tapered portions of the curved generatrix (7) at the top and bottom ends of the skirt is approximately twice the peak-to-valley height of the machined surface of the skirt (1). The load-carrying partial skirt surfaces (10, 11, 12, 13) and the depression (8, 9) are at least as wide as the wear pattern area, and the axial extent of the depression (8, 9) is so selected that the depression will not protrude from the cylinder when the piston is at its lower dead center and in the cold engine the load-carrying partial skirt surfaces (10, 11, 12, 13) have between the upper limit of the depression and the lower limit of the tapered portion of the curved generatrix (7) at top end of the skirt an axially parallel portion in a height of 1.5 to 4.5 mm, preferably 1.5 to 2.5 mm.
    • 在轻合金活塞中,每个载荷裙边表面被凹陷分成两个载荷部分轴表面。 为了减少摩擦损失和润滑剂的消耗,在裙部的顶端和底端处的弯曲母线(7)的锥形部分之间的凹陷(8,9)的深度大约是峰 - 裙部(1)的加工表面的谷高度。 负载部分裙部表面(10,11,12,13)和凹陷(8,9)至少与磨损图案区域一样宽,并且凹部(8,9)的轴向范围如此选择 当活塞处于其下死点时,凹陷不会从气缸突出,并且在冷发动机中,承载部分裙部表面(10,11,12,13)之间具有凹陷的上限和下部 在裙部顶端的弯曲母线(7)的锥形部分的极限为1.5至4.5mm,优选为1.5至2.5mm的高度的轴向平行部分。
    • 4. 发明授权
    • Method for producing a piston for an internal combustion engine
    • 一种内燃机活塞的制造方法
    • US08011095B2
    • 2011-09-06
    • US11791376
    • 2005-11-23
    • Wilfried Sander
    • Wilfried Sander
    • B21K1/18
    • F02F3/26B22D19/0027B22D19/14F02B23/0603F02B23/0639Y02T10/125Y10T29/49249Y10T29/49252Y10T29/49254Y10T29/49259
    • The invention relates to a method for producing a piston for a combustion engine comprising a combustion recess, during which an annular fiber preform for reinforcing the edge of the combustion recess is firstly fastened inside the casting mold. Afterwards, a low-silicon aluminum/copper melt is introduced into the casting mold by which the fiber preform is infiltrated and molded into the recess edge within the scope of the casting process. The piston blank produced in this manner is then subsequently compacted by a high-temperature isostatic pressing before the piston is completed by means of a machining completion process. The flanks and the base areas of the second and third annular groove are coated by means of anodic oxidation, and the hub boreholes are smoothed and hardened by roller-burnishing. This results in a very high-quality and heavy-duty piston.
    • 本发明涉及一种用于生产用于内燃机的活塞的方法,该燃烧发动机包括燃烧凹槽,在此期间首先将用于加强燃烧凹部的边缘的环形纤维预制件固定在铸模内。 然后,将低硅铝/铜熔体引入铸模中,通过该铸模将纤维预成型件渗透并在铸造过程的范围内模制到凹口边缘中。 以此方式制造的活塞坯料然后在活塞完成之前通过加工完成工艺通过高温等静压进行压实。 第二和第三环形槽的侧面和底部区域通过阳极氧化被涂覆,并且轮毂钻孔通过滚筒抛光被平滑和硬化。 这产生了非常高品质和重型活塞。