Engineering
Engineering, 14.04.2020 23:53, rutza

Two possible overhead valve combustion chambers are being considered – the first has two valves; the second has four valves per cylinder. The diameter of the inlet valve is 23 mm for the first design and 18.5 mm for the second design. If the second design is adopted, show that the total valve perimeter is increased by 60.8%. If the valve lift is restricted to the same fraction of valve diameter, calculate the increase in flow area. What are the additional benefits in using 4 valves per cylinder?

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