公开(公告)号：WO1997011294A1

公开(公告)日：1997-03-27

申请号：PCT/SE1996000932

申请日：1996-07-10

Applicant: DAROS HOLDING AB ,  LOID, Hans, Peder ,  SUNDÉN, Hans

Inventor： DAROS HOLDING AB

IPC: F16J09/00

CPC classification number: F16J9/22

Abstract: The invention relates to a device in piston rings (6) fitted on pistons of internal combustion engines. These rings have a top face (7), a bottom face (8), and a peripheral edge face (13) the latter face forming the wear face sliding against an engine cylinder bore. A hole (9) extends from the top face (7) to the bottom face (8) of the piston ring (6) for passage-through of a smaller amount of combustion gases from the engine combustion chamber. Intermediate each hole opening on the bottom face (8) of the ring (6) and its peripheral edge face (13) additionally extends a channel (12) for outlet of said amount of combustion gases into the cylinder bore below the piston ring (6).

Abstract translation: 本发明涉及一种安装在内燃机活塞上的活塞环（6）中的装置。 这些环具有顶面（7），底面（8）和周边边缘面（13），后缘面形成相对于发动机气缸孔滑动的磨损面。 孔（9）从顶面（7）延伸到活塞环（6）的底面（8），用于从发动机燃烧室通过较少量的燃烧气体。 在环（6）的底面（8）和其周边边缘（13）上的每个开口孔都额外地延伸出用于将所述量的燃烧气体出口的通道（12）进入活塞环（6）下方的气缸孔 ）。

公开(公告)号：WO1995023305A1

公开(公告)日：1995-08-31

申请号：PCT/SE1995000160

申请日：1995-02-16

Applicant: DAROS HOLDING AB ,  SUNDÉN, Hans

Inventor： DAROS HOLDING AB

IPC: F16J09/20

CPC classification number: B23P15/06 ,  F16J9/062 ,  F16J9/203

Abstract: The invention concerns a method for the manufacture of oil scraper rings for the pistons in internal combustion engines. In accordance with the method, the ring (13) is first produced from cast iron in a mould. The material of the ring (13) is then re-fused on the external ring face (14) intended to serve as a sliding face, the re-fusion being performed along a couple of bands (15, 16) extending around the ring (13), for the purpose of increasing the hardness of the material in the band areas. The ring is then exposed to a lathing operation performed on either side of the bands (15, 16), allowing scraper edges (17, 18) to be formed from said bands. The re-fusion of the bands (15, 16) preferably is performed by means of a laser beam.

Abstract translation: 本发明涉及一种用于制造用于内燃机中的活塞的刮油环的方法。 根据该方法，环（13）首先由模具中的铸铁制成。 然后将环（13）的材料再次熔合在旨在用作滑动面的外部环面（14）上，该再熔合沿着围绕环延伸的一对带（15,16） 13），用于增加带区中材料的硬度。 然后将环暴露于在带（15,16）的任一侧执行的车床操作，允许从所述带形成刮刀边缘（17,18）。 带（15,16）的再融合优选地通过激光束进行。

公开(公告)号：WO2011154606A1

公开(公告)日：2011-12-15

申请号：PCT/FI2011/050536

申请日：2011-06-08

Applicant: WÄRTSILÄ FINLAND OY ,  HARALDSON, Lennart ,  SUNDÉN, Hans ,  VILHELMSSON, Fredrik

Inventor： HARALDSON, Lennart ,  SUNDÉN, Hans ,  VILHELMSSON, Fredrik

IPC: F02F1/00 ,  C23C4/06

CPC classification number: F02F1/004 ,  C23C4/01 ,  C23C4/06 ,  C23C30/00 ,  F02F2001/006

Abstract: A cylinder liner (1) of a reciprocating engine, the cylinder liner (2) having an inner surface (3) acting as a running surface (4) for piston rings (5), which running surface (4) comprises an upper portion (U) and a lower portion (L). The upper portion (U)includes at least a top dead centre region of a topmost piston ring (5). Only the upper portion (U) of the running surface (4) is provided with a coating(7) of metal matrix composite reinforced with ceramic particles.

Abstract translation: 一种往复式发动机的气缸套（1），气缸套（2）具有用作活塞环（5）的运行表面（4）的内表面（3），该运行表面（4）包括上部 U）和下部（L）。 上部（U）至少包括顶部活塞环（5）的上止点区域。 只有运行表面（4）的上部（U）设置有用陶瓷颗粒增强的金属基复合材料的涂层（7）。