1. The function of the valve guide is to guide the movement of the valve to ensure that the valve performs reciprocating linear movement, so that the valve and the valve seat ring can be correctly fitted, and the heat of the valve stem is transferred to the cylinder head.
2. The function of the valve guide is to ensure that the valve can move up and down along its own axis. In addition, the valve guide also has a heat conduction effect, helping the valve to dissipate heat.
The operating temperature of the valve guide is also relatively high, about 200°C. When the valve rod moves in the duct, it is lubricated only by the oil splashed out of the valve mechanism, so it is easy to wear. Therefore, nodular cast iron or powder metallurgy materials with self-sliding properties are often used to make separate parts, which are pressed into the valve guide seat hole on the cylinder head with a certain interference to prevent falling off. In order to prevent the valve guide from loosening, some engines use snap rings to fix and position the guide.
3. The guiding device of the automobile engine valve is mainly to guide the valve, and at the same time, the heat on the valve stem is transferred to the cylinder head through the valve guide.
There are two types of valve guides: integral type and built-in type. The integral valve guide has a valve stem hole directly processed in the cylinder head. The built-in valve guide is interference-pressed into a cylindrical tube in the duct hole in the cylinder head, with an interference amount of 0.015～0.065mm.
engine Valve Pipe
2. The function of the valve guide is to ensure that the valve can move up and down along its own axis. In addition, the valve guide also has a heat conduction effect, helping the valve to dissipate heat.
The operating temperature of the valve guide is also relatively high, about 200°C. When the valve rod moves in the duct, it is lubricated only by the oil splashed out of the valve mechanism, so it is easy to wear. Therefore, nodular cast iron or powder metallurgy materials with self-sliding properties are often used to make separate parts, which are pressed into the valve guide seat hole on the cylinder head with a certain interference to prevent falling off. In order to prevent the valve guide from loosening, some engines use snap rings to fix and position the guide.
3. The guiding device of the automobile engine valve is mainly to guide the valve, and at the same time, the heat on the valve stem is transferred to the cylinder head through the valve guide.
There are two types of valve guides: integral type and built-in type. The integral valve guide has a valve stem hole directly processed in the cylinder head. The built-in valve guide is interference-pressed into a cylindrical tube in the duct hole in the cylinder head, with an interference amount of 0.015～0.065mm.
engine Valve Pipe
