| 摘要 |
PURPOSE: A damping apparatus for a chain guide is provided to relax tension between a chain and the chain guide in a chain system of an engine and to remove abnormal vibration and reduce noise. CONSTITUTION: A damping apparatus(30) for a chain guide(20) comprises a base(31); a housing(32); a cylinder(33) and a piston(35). The base is stuck to a fixed side of an engine body. The housing is a tubular shape and opens both sides. One end of the housing is connected to the base. The other end of the housing receives the cylinder. The cylinder is filled with oil(50), and a shaft hole is formed to a side of the cylinder. The other side of the cylinder is stuck to a side of the chain guide. Orifices(36) are formed to the piston to be moved to both sides according to oil pressure of the cylinder in a middle portion of the cylinder. A rod(37) is protruded from a side of the piston and extended to the outside after penetrating the shaft hole. The rod is connected to a spring sheet(38). The spring sheet is supported by a spring(40) facing the base. Therefore, vibration of a chain(10) to the chain guide is absorbed.
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