| 摘要 |
Valve spring for automobile engines, having a length L0 in the unloaded condition, a length L1 when the valve is closed, and a length L2 when the valve is open and with wound-in end turns (22), in which the transitional region (23) lies between 200 DEG and 360 DEG and a length of the transitional region adjoining the adjacent full turn lies between 270 DEG and 300 DEG and in which, in the unloaded condition, the transitional region (23) is at the following distance from the adjoining turn (24) of the cylindrical part: <IMAGE> where if = the number of turns with a spring action; Dm1 = the mean diameter of the end turn (22); Dm2 = the mean diameter of the turns (24) of the cylindrical part. <IMAGE>
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