Joule Thief 101

[MileHigh]

That's just silly nit-picky BS because I am using common vernacular to describe the combustion in the cylinder.  It's gratuitous nonsense.  Why are you ignoring what is actually being stated, that resonance inside the cylinder is no good?  You are creating your own Orwellian nightmare yourself.  No need to brainwash the citizens, they will happily brainwash themselves.

[Magluvin]

That's just silly nit-picky BS because I am using common vernacular to describe the combustion in the cylinder.  It's gratuitous nonsense.  Why are you ignoring what is actually being stated, that resonance inside the cylinder is no good?  You are creating your own Orwellian nightmare yourself.  No need to brainwash the citizens, they will happily brainwash themselves.

Common words to use for people who 'know' about engines well enough to debate about them is 'burn' and 'detonation'.

Effects of resonance, from what Im seeing so far, can be had in just 1/4 cycle.   When we disconnect input to a coil, the field collapse voltages rise to the freq of the coils resonant freq. So the first spike is at the resonant freq of the coil. If we look closer by changing the time base on the scope, we can see the spike is just the first upward, or downward, swing of the coils resonant cycle.  So we dont have to have full, multiple waves of resonant freq for it to be called a resonance effect.  The effects of it can be had in just 1/4 of the first wave.

Mags

[tinman]

Really?  You apparently didn't even read the results of your Google book search.

Yeah, when the fuel mixture explodes inside the cylinder, the burned gasses create pressure waves at resonant frequencies which causes an undesirable "diesel knock."  This causes the engine block walls to vibrate causing noise radiation.

They are studying ways of understanding and reducing or eliminating this problem by putting pressure transducers inside the cylinders and recording the undesirable pressure waves associated with the combustion process.

So resonance in the combustion chamber is undesirable.  It causes excessive noise and certainly if the walls of the engine block are taking on added vibrational stresses that's can't be a good thing.  If you could eliminate that resonance, then the energy that causes the noise and vibrates the walls of the engine block could be directed towards pushing on the pistons instead.

MileHigh

MH

I was replying in regards to your comment -Quote:  But the actual engine itself, the pistons, the valves, the camshaft, the crankcase, the ignition, etc, has absolutely nothing whatsoever to do with resonance.

The fact is,i have read that paper,and many more like it.that are based around the same research.
What they are saying,is that the correct bowl cavity shape and size within the piston,plays a vital roll in the performance of that engine. they are showing you how the incorrect bowl configuration can lead to unwanted vibration's,and thus expended energy in way of vibration's.

Like i said,there is much more research and information on combustion resonance research,and this has led to todays very high performance diesel engine's. They shape this bowl in such a way that it creates a standing wave within that bowl,which has led to much faster,complete, and more powerful combustion explosion's.

These are not fairy tails MH,these are realities.
So we can either base our research around realities,or we can continue to put all our eggs into the one basket that is doomed to fall.

You are very correct when you say that some resonance in ICE's is a bad thing--E.G,like i was saying with the cooling fin's of the old air cooled ICE's. But there are also places that achieving resonant states increases the performance of the engine. The best research is done by finding the wanted and unwanted resonant states of each component of the ICE.

It is the very same for a transformer,where reaching a resonant state of that transformer will allow you to draw more energy from that transformer,while at the same time reducing the input energy to that transformer. So resonance dose indeed increase efficiencies.

Brad

[Bob Smith]

No, that's complete nonsense and you don't have the slightest clue what you are talking about.

Thank you for proving my point.
Bob

[Bob Smith]

Dear Bob,

You naughty boy, you can't post this kind information without getting first permission, min. 5 copy and stamp, 3-6 month's waiting, this from the flying Upper-Totem-Pole.

And Right, you see, with in only 5 min. a negative reaction, Red-Card!!

WITTS, Ainslie .............. all crazy, according our balcony chicken / nickname.

Thanks, Johan

P.s. Fast jets are flying with slow burning Diesel fuel, the better LNG we let, because bad mixture with TMA, science slaves.

Heh heh
Yes,
I have transgressed the paradigmantic norms
And spoken of things taboo.
Your red card I gladly will take with honour,
And wear it with pride, I shall too!

Bob Smith
Resonant Renegade
Running with a shaky crowd