| US 7,533,647 B2 | ||
| Cylinder liner, cylinder block, and method for manufacturing cylinder liner | ||
| Noritaka Miyamoto, Toyota (Japan); Masaki Hirano, Toyota (Japan); Toshihiro Takami, Toyota (Japan); Kouhei Shibata, Toyota (Japan); Nobuyuki Yamashita, Shiojiri (Japan); Toshihiro Mihara, Matsumoto (Japan); Giichiro Saito, Yamagata (Japan); Masami Horigome, Yamagata (Japan); and Takashi Sato, Yamagata (Japan) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota-shi (Japan) | ||
| Filed on Jul. 06, 2006, as Appl. No. 11/480,995. | ||
| Claims priority of application No. 2005-201001 (JP), filed on Jul. 08, 2005. | ||
| Prior Publication US 2007/0012177 A1, Jan. 18, 2007 | ||
| Int. Cl. F02F 1/00 (2006.01); B22D 19/00 (2006.01) | ||
| U.S. Cl. 123—193.2 | 12 Claims |
| 1. A cylinder liner for bonding with a predetermined adhesiveness to a cylinder block of an internal combustion engine when
casting the cylinder block, the cylinder liner comprising:
an outer surface insert cast in casting metal directly or via an intermediate layer; and
a plurality of bottleneck-shaped projections arranged on the outer surface;
wherein the adhesiveness between the outer surface and the cylinder block or the intermediate layer differs along an axial
direction of the cylinder liner,
wherein the cylinder liner has an upper portion and a lower portion, the upper portion solely undergoes a roughening process
so that the adhesiveness at the upper portion is greater than the adhesiveness at the lower portion.
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