(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Quick question about ''Cut-off ratio'' in the Diesel Cycle.

So I've been studying the Diesel Cycle, and I've come up with something called the ''cut-off ratio'', which is simply a name for the ratio of expansion [tex]r_E[/tex].

But I'm getting different definitions for this ratio.

For example, in the below link the expansion ratio is given by [tex]r_E = \frac{V_1}{V_3}[/tex]

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/diesel.html#c2

And in this other link the expansion ratio is given differently by [tex]r_E = \frac{V_3}{V_2}[/tex]

http://www.taftan.com/thermodynamics/DIESEL.HTM

I'm confused, can someone enlighten me please, are those expressions similar, if yes, how so?

Thanks.

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# Homework Help: [Thermodynamics] Quick question about ''Cut-off ratio'' in the Diesel Cycle.

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