Fibre-reinforced metal pistons
    5.
    发明公开
    Fibre-reinforced metal pistons 失效
    FaserverstärkteMetallkolben。

    公开(公告)号:EP0656428A1

    公开(公告)日:1995-06-07

    申请号:EP94203473.7

    申请日:1994-11-29

    IPC分类号: C22C1/09 F02F3/00

    摘要: A piston for an internal combustion engine, and particularly, but not exclusively, for a Diesel engine, has in a region thereof reinforcing ceramic fibres, the fibres originally being in the form of an insert for the piston with a relatively high density in the range 10 to 20% of the density of the fibre material. In the fabrication of the piston the insert is infiltrated with molten piston material, the piston being formed by employing a pressure casting technique, such as squeeze casting. The piston material comprises an aluminium alloy with 2.0 to 5.5% by weight copper and with 11.0 to 17.0% by weight silicon, and, preferably, 2.5 to 3.5% by weight copper and 12 to 14% by weight silicon. In the fibre-reinforced region the top ring groove of the piston is provided, and, possibly, the fibre-reinforced piston region provides the peripheral part of the crown surface.

    摘要翻译: 用于内燃机的活塞,特别地但不限于,用于柴油发动机的活塞在其区域中增强陶瓷纤维,该纤维最初为具有相对较高密度范围的活塞的插入件 10〜20%的纤维材料的密度。 在活塞的制造中,插入件被熔融活塞材料渗入,活塞通过采用压铸技术(例如挤压铸造)形成。 活塞材料包括具有2.0至5.5重量%的铜和11.0至17.0重量%的硅,优选为2.5至3.5重量%的铜和12至14重量%的硅的铝合金。 在纤维增强区域中,设置活塞的顶环槽,并且可能地,纤维增强活塞区域可提供冠表面的周边部分。