Thursday, October 3, 2013
What Is the Valve Train Linkage
The valve train linkage is a basic necessity of a combustion engine. To understand the workings of an engine, you must first understand how the fuel and air make their way to the cylinder where they are combined.
Valve Train Function
The valve train consists of the valves and the camshaft in your engine. The valves open and close to allow air and fuel into the cylinder, and then to allow exhaust out of the cylinder. The camshaft is a rotating metal rod with different sized bumps along its length. This rod lifts and drops the valves according to cylinder and combustion order as it turns.
Linkage Function
The valve train linkage is the part or parts that attach the camshaft to the valves themselves. Some engines have valves that sit directly on the cam, others have rods and lifters that link the two parts.
Considerations
As in most mechanical things, fewer parts means less potential for problems. This would make the direct or short linkage engine preferable to an engine with a complicated valve train linkage. Many older cars were built with the more complicated system.
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