Revetec’s Law of Aspiration

“Any engine with connecting rod to stroke ratio more than 1.7 cannot breath efficiently. The only way is the supercharging.”

A good evidence, according Revetec, is the use of con-rod to stroke ratio more 2.0 and more in Formula 1 where the typical rev range is between 10.000 to 20.000 rpm.

Pattakon has built a single cylinder Harmonic engine (look at www.pattakon.com web site) that provides in the flywheel more than 3 Kp*m of torque at only 3000 rpm, with only two valves, from 354 cc (75 Bore, 80 stroke). 15 years ago.
But who cares, and who believes, what Pattakon made, measured and say?

I previously used another way to prove to Revetec that their “Aspiration Law” is nothing but nonsense.
When two 100mm Bore pistons reciprocating in a 40 mm Stroke share the same crankpin (V8 and V10 Formula 1 engines), any con-rod to stroke ratio less than 2.0 make them hit to each other. Is it so difficult? If you still confused I can make an animation to show you the case.

In case of Newton’s law “Force=mass*acceleration”, law means that we didn’t find in our world an exception. No matter a black of a white man measures the mass, the force and the resulting acceleration, no matter when he measures them, no matter where the measurement takes place, no matter … the law is always true. Otherwise it is not a law.

Similarly for the Revetec’s “Law of Aspiration”, if it is a real law and not nonsense, it must be true for every engine, anywhere, anytime.
So either Pattakon lies claiming a naturally aspirating engine with excellent breathing and con-rod to stroke ratio not just over 1.7, not just over 2.0, not just over 1000 but infinite (this is what harmonic engine means: its piston performs the motion of the piston of the conventional with con-rod to stroke ratio infinite) or ...

Except Pattakon, others built pure sinusoidal (harmonic) engines too ( i.e. infinite con-rod to stroke ratio).
One of them is the Australian CMC.
Unless what they wrote in their web site is not true, they designed and built a whole series of naturally aspirating engines, they made “long” tests in many of them, they even sold a few of them to car makers for tests etc.



They write for their kinematic mechanism, they write for less vibrations, for more compact design, for lower consumption, for better combustion and fewer emissions due to the longer dwell of the pistons at TDC etc etc.
And every one of their engines does use natural aspiration. Doesn’t it?

These are “clumsy” mistakes. Aren’t they?

It is a fact that Revetec failed to tune properly their sinusoidal engine.
It is also a fact that others made sinusoidal engines with excellent aspiration at low – medium revs without any need of supercharging.
So, it seems the genius needs some more courses on engine aspiration.

An engine with a Pattakon VVA on it, would help.

Thanks
Manolis Pattakos