Exhaust valves and servo motors explained
I believe I noticed a power-valve on an Aprilia race bike along with a few 02 sensors out the pipes? I believe Honda had an elaborate muffler system that snaked the air pulse in an exploitative way using the power-valve? I think it was an 'engineering exercise' and the other factories followed suit? I can't see how a low rpm engine would be at some state of noise emissions? Whereas, the low pulse would gain some grunt? I do not see too many bikes with this servo as in 'a must have for noise emissions?' I don't see it as an 02 emissions to the fuel to match even more strict emissions over in europe? So from euro2 to euro3 is the standard now... noise included?
I've owned, for example, 3 of the same models since 2006. I've seen a honeycomb cat-converter in the 1 header and 2 without. That's 3 "factory emission exercises" during this production run of the same engine family, practically speaking. What I'm trying to establish is a tuning trick, not some emissions trick. Factory pulls paper for a patent and coins it 'power valve'... Why not say the abstract title is not called an 'emissions valve?'
If you read the article, he states the torque flow is now linear by eliminating the servo/stepper motor/actuator/hint-hint-rheostat. Lets use this as an exercise for many basic abstracts to see how the computer functions in the basic moves it can recognize.
A. Analog: This term means 'many.' Lets use a dimmer wall switch as the example. This switch is in a linear state, would you agree? Meaning, the switch can send the light in a linear bright, correct? So, to get there, the switch sends in many different strengths of voltage to amp up the wattage in the bulb. Just think of the input signal to the ECU as many signals from this input 'jobber' called the throttle position sensor (TPS). That servo is also a type of dimmer switch that enters a lot of different positions and that is a lot of dimming of the switch that should be correlating 'the MANY signals' to the ECU.
B. Digital: This term means 'one.' Lets use a diode, a resistor, a bulb, a transistor as an example. WATT you should see now is each part is valued as 'one setting.' You walk into radio shack, you ask for a 220/110/2/10 ohm resistor and that is "ONE NUMBER" of that part. In other words, you walk into home-lowe's, and need a light bulb, watt do you think is 40/60/100w? A single number is what you now see >>> AS INPUT number(s). In other words, we should now be connecting the dots to see that the mini-board with its resistors and transistors, a 555 timer and an IC (integrated circuit) that has [the most pins out] the black square, are all a single number stuck on that board. Make sense we see a single number as in [the input signal has] no moving parts like a rheostat or servo the ECU is waiting for?
C. BACKUPLAN: In computer speak, this is known as a safety valve. What it does next is it trims the power down from FULL to Limp. There is a sensor down and the input signal put the ECU on notice. WATT just happened is to switch your mind over from analog of many to a problem of one the ECU sees. So no matter how you look at it, the mini-board is sending in '1' signal, not 'many' linear moves.
In machine speak to the ECU, our binary number reads like this:
111111111111111111
If we had the servo hooked up, our input following the stepper motor's position would be like this:
1110100101010100010101101010
Once the input to the ECU has (1)a disconnected connector, (2) a short to ground, or a (3) signal out of range = Defaults to the limp or safe-mode. This now is a compromised signal and the computer makes 3 moves on that "out of range signal." It either:
1. Yes - Use it.
2. No - Do not use it at this time.
3. Don't care - Won't use it at all.
Where did that put the out of range single signal out of that mini-board? "Don't care" for the number thank you... You are now in BackUPlan with this "Best" number we created that computes in the complex now and sends junk out as junk came in, here is the best binary we came up with to do the same job in other words: to get you home.
What kept the check engine light off? The 3 wires were still hooked up is my guess. Why? Because the signals are crossed to that 3rd wire going in the mini-board. It's the 555 timer tricking the ECU. I'm on/off, on/off, you can't catch me if you have this happening.
WATT you should now recognize is ac current nature produces and man has to come up with something as to: how to split the two? The input is in ac, so that is why there are so many one way made parts you see on the board. It has to capture the one wave and send it as a dc current. It is how it has to flow as in: one flow in and one flow out think.
So my guess stepping to the 555 timer keeping that light from coming on, we still cannot mimic the rheostat input the servo produces. You should recognize The two different frequencies; The two different inputs of many vs. one; The compromise the ECU takes by using that 'out of range' value; which calc's to a "Best" compromised number as the output... :roll:
Are you on the same page yet, laughing at the electronic elixirs? The many linear moves vs. one single move over and over is the same number?
Do not mess with the Penultimates or else! LOL
:bang: Here is the wall of pain... Read it as as in, 3rd X's the Charm :2thumbs:
Good one, Carlos :lol: