In a spark ignition engine working on the

ideal Otto cycle, the compression ratio is

$5\mathrm{.}5.$ The work output per cycle $($i$.$e$.,$ area of

the P$-$V diagram$)$ is equal to $23\mathrm{.}625$xI$05$xVc

J$,$ where Ve is the clearance volume in m$3$

$$

The indicated mean effective pressure is