In a perfect engine, air flow would be directly proportional to piston air demand or theoretical air flow volume.If there were no limits with regards to engine rpm (not indicated in the above) and airflow as it would perfectly follow the piston, any engine according to you would rev to the moon, which isn't true and you know it.
That is represented by 100% Volumetric Efficiency of the entire engine.
Volumetric efficiency isn't about volume at all; it is about air mass flow and compares actual mass flow to theoretical air mass flow.
The theoretical air mass flow is given by displaced volume x rpm x air density. We do not know the actual air density in a running engine.
The parameters which affect inlet air density are several: fuel type, fuel ratio, % evaporation, temperature, pressure ratio, compression ratio, piston speed, discharge coefficient, valve geometry (size, lift, timing) and compressibility factor.
The formula used to determine VE = Actual air mass / Displaced volume * rpm * air density. Since we do not know the actual air mass, we will ignore those parameters that impact actual flow and focus on theoretical air volume flow to allow a comparison of various engine design factors such as bore, stroke, rods, rpm, valves and ports, etc.
We are not concerned with air acceleration since that is an instant value. We are concerned withThe difference between acceleration created in which I assume 90° being the point with the highest speed would be (and based on the above number)
A. 17545 m/s²
B. 16.227 m/s²
the overall effect of engine parameters which is represented by the aggregate air flow for the entire induction cycle,
including flow reversions. We have included provision for choked air flow whether at the valve or port. Therefore, it is not possible to run thr engines to excessive speeds since the choked flow will reduce air density and limit air mass flow.
Now we are into required peak energy which does not reveal the correct picture. The flow velocity and air density will change with each piston position , local temperature and pressure change; which we do not know. We can however, summarize the theoretical air volume flow including flow reversions and choked flow at valve and/or port.Assuming that the force by which the mass is drawn/pushed into the cylinder remains the same for both, the mass of air would have to loose 8.1% in density.
Remember the OP was in regard to the effects of rod ratio. The comparison of the two engines shown above is complicated by offsetting design factors such as bore and stroke. If we model an engine with the same bore, stroke, rpms, valves, ports and cams, we can then determine the effects of of ratio independent of other engine factors.