Operation of exhaust and intake valves in an automobile engine consists of the cam C, push rod DE, rocker arm EFG which is pinned at F, and a spring and valve, V. If the spring is compressed a distance δ when the valve is open as shown, determine the normal force acting on the cam lobe at C. Assume the cam and bearings at H, I, and J are smooth. The spring has a stiffness k.

Given:

a = 25 mm

b = 40 mm

δ = 20 mm

k = 300N/m

Transcribed Image Text:

FG Fs н т FF FG