| 摘要 |
The camshaft (10) is cast as one piece and has a rotational axis (22) along which operational features of the camshaft are arranged. These features include at least one cam or group of cams (12, 14,16 and 18) connected by at least one shaft portion (50). The shaft portion (50) extends along the rotational axis (22) and is formed so that for at least part of its length it has a cross-sectional shape, transversely of the rotational axis (22) which consists of a plurality of radially extending arms separated by recesses. |
