Tolerance for gas/steam Engine

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    Engine Tolerance
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The standard tolerance for cylinder bore and piston in gas or steam engines varies widely due to the diverse applications and materials involved. Minimum clearance is influenced by factors such as material properties and operating temperatures. Key considerations include gas pressure, bore and stroke dimensions, RPM, the presence of piston rings, lubrication methods, and acceptable blow-by levels. There is no universal standard due to these varying parameters. Understanding these factors is crucial for optimizing engine performance and efficiency.
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What is the standard tolerance for a cylinder bore and piston? The working fluid is steam or compressed air.
 
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There is no standard for such a broad range of uses.
Minimum clearance will depend on materials and temperatures.
What is gas pressure?
What bore and stroke, at what RPM?
With or without piston rings?
What is the lubrication?
How much blow-by can be tolerated?
 

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