| 摘要 |
A structure for an EGR(Exhaust Gas Recirculation) valve is provided to reduce friction heat between a rod and a rod guide, by forming a damper portion having a larger diameter in the gap formed between an upper rod guide and a support portion. A structure for an EGR valve(1) comprises a rod for operating the valve; and a rod guide for supporting and guiding the axial movement of the rod. The rod guide is formed into two steps of an upper rod guide and a lower rod guide. The lower rod guide includes a damper portion formed directly beneath the upper rod guide, and a support portion formed directly beneath the damper portion. The damper portion has a relatively larger diameter, and the support portion has a diameter identical with that of the upper rod guide. A mixture of carbon and oil components is accumulated in the damper portion.
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