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Research Article

An Experimental Analysis of the Fluid Dynamic Efficiency of a Production Spark-Ignition Engine during the Intake and Exhaust Phase

Table 4

Absolute and mean flow coefficients for the exhaust system.
Analysed systemExhaust
Absolute flow coefficient, 𝐶 𝑓 A b s 0.359
Absolute discharge coefficient, 𝐶 𝑑 A b s 0.458
Mean flow coefficient, 𝐶 𝑓 M e a n 0.426
Mean discharge coefficient, 𝐶 𝑑 M e a n 0.448
Maximum flow coefficient, 𝐶 𝑓 M a x 0.522
Maximum discharge coefficient, 𝐶 𝑑 M a x 0.515