Valve guide pipe and engine with same
The invention belongs to the technical field of engines and particularly relates to a valve guide pipe and an engine with the same. The valve guide pipe is characterized in that pit structures are uniformly distributed on the inner surface of the valve guide pipe and can be used for effectively stor...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to the technical field of engines and particularly relates to a valve guide pipe and an engine with the same. The valve guide pipe is characterized in that pit structures are uniformly distributed on the inner surface of the valve guide pipe and can be used for effectively storing lubricating oil and abrasive particles generated in the friction process, so that the surface wear of a valve stem and the valve guide pipe is reduced. The upper part of the valve guide pipe is additionally provided with two grooves, so that rubber inside a valve steam sealing sleeve can be embedded into the grooves, and the extrusion resisting force of the valve steam sealing sleeve is increased. A locating ring flange is added at the connected part of the valve guide pipe and an air cylinder cover and can be used for accurately locating the position of the valve guide pipe; the locating ring flange is designed into a tapered structure, so that the strength of the junction part betweenthe valve guide pipe and |
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