Joule Thief 101

[tinman]

@ Brad





results = increase in fuel efficiency




neither is resonant between the engine and alternator, engine and water pump, engine and cooling fan, etc.

while this has little to do with the resonance of the engine itself,
synchronization within the intake/exhaust flows of the ICE, can affect efficiency.
this is defined by the equation for the engines "back pressure".
at too low a pressure, the engine has no torque.
at too high a pressure, the engine backfires.

What is !engine! back pressure?
If you are referring to exhaust back pressure,then you have the last two statements wrong.

catalytic converters and mufflers are designed with this equation in mind.

I work with exhaust systems every day of the week--it's my job. http://dapcotyreandauto.com.au/
Two stroke and four stroke exhaust systems are totally different in the way they work.
The two stroke exhaust i have already explained.
The exhaust system for a 4 stroke engine that provides maximum performance,is one that has no restriction of flow at all. Cat converters and mufflers that have the least amount of flow restriction,are those that provide best performance.

using the diameter and length of the exhaust pipe, in certain locations
one can determine the pulse frequency of the exhaust, with respect to the resonant frequency of the pipe.when these two are at a coherent resonant node, the flow of exhaust is least impeded by the force of the engines exhaust.
This adds to the HP equation, during the evacuation stage of the combustion chamber.

This is(and always has been)my point.
These resonant systems within the 2 stroke engine improve both performance and power.

this is not engine resonance, this pertains to the frequency of the engine, with respect to the resonant frequency of the exhaust system.

Once again--i have never said engine resonance. I have clearly stated resonant systems within a two stroke engine that increase performance and efficiency.
You are saying the same thing as i have said smOKy

This goes back to my earlier statement, about certain portions of the system being in resonance, but not the system as a whole.
This is more of a synchronization of the engine rpm, with the resonant cavity of the exhaust.
Do you see the difference?

Of course i see the difference--i have stated the difference many times now.
Why are we having this conversation?

the exhaust may be resonating, but the engine, with respect to the oscillations, and the dimensions of the chamber containing the driveshaft,
is nowhere near its' resonant freq.

I have a feeling smOKy that you have been too busy to read my post.


Brad

[sm0ky2]

what happens when you poke holes in your cat?

they are not designed for the least amount of restriction.
they are designed for the PROPER amount of restriction.
as defined by industry standards for emissions and noise pollution.
catalysis is a function of air-flow over time.

What I am trying to emphasize here, is that the ICE example only includes partial resonances.

NOT total system resonance, which is a prerequisite for resonant electronic circuits.
For your circuit to be considered "resonant",
It must fit the wine glass analogy.

[sm0ky2]

if the switching function operates the ferrite at a resonant frequency,
but does not resonate with secondary impedance of the (battery+transistor || LED) circuit,
The system is not "resonant".

This is the point I am trying to make

Both frequencies must be coherent, for resonant operation.

[sm0ky2]

This free course study offered by MIT,
will help you understand the number 42

http://ocw.mit.edu/resources/res-6-008-digital-signal-processing-spring-2011/

[minnie]

    Kadenacy!