The principles of “Compound expansion” are briefly outlined in the Simple/Compound page of this website which also describes the advantages of compounding as follows: Use of compound expansion allows longer cut-offs to be used, thereby delivering more uniform wheel-rim tractive effort; The ability of compound engines to operate efficiently at longer cut-offs increases their α-coefficient and thus their […]
The process of reducing constraints to steam flow is usually referred to as “Internal Streamlining”. Internal streamlining produces two benefits: It raises the Front-End Limit resulting in increased steam flow through the cylinders which in turn increases the upper limit of power output for the engine. It has the effect of reducing flow resistance and […]
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Lack of steam tightness is usually imagined to be associated with steam leaking from pipe joints and piston rod glands resulting in the familiar leaks that can be seen as a white plume of steam eminating from wherever the leak is occurring. Steam leakage of this sort is indeed wasteful and deletarious to a locomotive’s […]
Page Under Development This page is still “under development”. Please contact the webmaster at info@advanced-steam.org if you would like to help by contributing text to this or any other page.’