CHAIN TENSIONER WITH DAMPING FEATURE

摘要

A tensioner capable of controlling strand vibration and motion and reducing noise in a slack strand of a chain assembly includes a flexible shoe (30), an elongated spring (36) and a resilient damping device (50). The flexible shoe (30) is pivotally mounted on a tensioner bracket (24) to engage and tension a chain. The elongated spring (36) is inserted in the flexible shoe (30) to apply a tensioning force to the shoe. The resilient damping device (50) is mounted between the tensioner bracket (24) and the spring (36) to limit chain vibration occurring due to valve events and firing pulses of an engine. The damping device (50) is particularly useful in damping vibration in an automotive engine timing drive.