valve stem guide

См. также в других словарях:

• Valve stem — For the shaft which transmits motion from the outside to the inside of a valve, see Valve#Stem. A valve stem is a self contained valve which opens to admit gas to a chamber (such as air to inflate a tire), and is then automatically closed and… …   Wikipedia

• valve stem — The long cylindrical portion of the valve that moves up and down in the valve guide …   Dictionary of automotive terms

• Valve — This article is about the flow control device. For the game developer, see Valve Corporation. For the electronic component, see Vacuum tube. For other uses, see Valve (disambiguation). These water valves are operated by handles. A valve is a… …   Wikipedia

• Valve guide — In most types of reciprocating engines, a valve guide is provided for each poppet valve in the cylinder head. Along with the valve spring, it serves to positively locate the valve so that it may make proper contact with the valve seat. A valve… …   Wikipedia

• Valve seat — The valve seat in an internal combustion gasoline or diesel engine is the surface against which an intake or an exhaust valve rests during the portion of the engine operating cycle when that valve is closed. The valve seat is a critical component …   Wikipedia

• valve — A device used to either open or close an opening to allow or prevent the flow of a liquid or gas from one place to another. There are many different types. See ABS relay valve accumultor valve air valve carburetor air control valve air gulp valve …   Dictionary of automotive terms

• valve umbrella — A washer like unit that is placed over the end of the valve stem to prevent the entry of excess oil between the stem and the guide. Used in valve in head installations …   Dictionary of automotive terms

• valve oil seal — A neoprene rubber ring that is placed in a groove in the valve stem to prevent excess oil entering the area between the stem and the guide. There are other types of these seals …   Dictionary of automotive terms

• valve guide seal — See valve stem seal …   Dictionary of automotive terms

• valve guide — The cylindrical hole which is located in the cylinder head or block through which the stem of the poppet valve passes. It is designed to keep the valve in proper alignment. It also serves as a bearing surface. Some guides are pressed into place… …   Dictionary of automotive terms

• Poppet valve — A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most… …   Wikipedia