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

Table 2

Measuring conditions.

Analysed system	Intake	Exhaust
Pressure drop, Δ𝑝	10 kPa	10 kPa
Dimensionless valve lift, 𝐿𝑣/𝐷𝑣	0.060 ÷ 0.301	0.072 ÷ 0.358
Throttle angle, 𝐹	30,40,50,70,90^∘	—