Driving chain, especially for engine, timing system and engine provided with such a chain

摘要

The chain consists of a series of links made from outer (4) and inner (14) plates connected by pins (6) inside bushes (16a) covered by rollers (26a). The bushes and rollers have central radial lubricant holes (17, 27) which align with one another when the roller holes lie perpendicular to the direction of the chain's travel and facing its centre of curvature. In this position the holes are able to align with radial lubricant feed channels between the teeth of a driving or driven sprocket.