Great video Shane 💪🏼

Almost need a graph/data like this with every injector . Great stuff

Thanks for taking the time to make this video Shane. Makes so much sense when you show the traces. I really appreciate this video and can't wait for the next one!

I've lost count of how many times I've re-watched this, but every time it's given me more than I could anticipate! These technical videos are pretty sweet, thank you!

@TunedbyShaneT

3 жыл бұрын

👍🏻👍🏻

this was an excellent watch and very informative. I already shared it and put it in my saved list to watch again

Really appreciate your scientific and methodical approach to tuning and general analysis. Thanks for dropping some knowledge.

@TunedbyShaneT

3 жыл бұрын

Happy you enjoyed it

Incredible information, given away for free! Amazing stuff, love the way you think.

Like always. Thanks for sharing!

@TunedbyShaneT

3 жыл бұрын

Thanks for watching

Thanks so much for sharing your experience with us Shane

Thanks again for taking the time to explain the realities and relationships of the electrical/mechanical/physical properties of a system and the data you gather.

Brilliant explanation. I salute your efforts to educate..... Bravo Shane.

@TunedbyShaneT

3 жыл бұрын

Well appreciated sir thank you for that.

That picture was worth a thousand words, great way to log some data to show and share with us. Thank you Shane !

@TunedbyShaneT

3 жыл бұрын

My thoughts exactly

Thanks for the explanation Shane.

Love the use of a knock sensor to determine the injector pintle effectively reaching the end of its travel. I think im defenitely going to have to play around with that doing direct injector behaviour.

Really clear explanation! Thanks!

@TunedbyShaneT

Жыл бұрын

Great thanks for checking it out

Amazing explanation. Thanks

Outstanding study. Thank you sir.

shane this is insane, I really admire your knowledge and great way of explaining this stuff. Thanks for sharing

@TunedbyShaneT

3 жыл бұрын

Cheers

This is super helpful for calculating latest EOI. over 1ms is worth a good amount of crank degrees of rotation at high rpm.

Love this thanks for all the info.

Great addition to the previous video!

@TunedbyShaneT

3 жыл бұрын

Happy you enjoyed it

Your explanation are the best

Thinking outside the box in order to get the data you need to explain what you’ve seen awesome man

@TunedbyShaneT

3 жыл бұрын

💪🏻

Thank you for great info

excelente, gracias

Oh, one more thing, the injector pintle is not moving „slightly“ or spraying a little bit during the rise of the amperage but snaps when enough energy is there to counteract the spring force inside the injector. So the dip in the current curve and the pintle hump in the voltage curves are the exact snap points. So your idea attaching a knock sensor proves what I had learned using my Picoscope. Thanks

@TunedbyShaneT

Жыл бұрын

👍🏻

Scintillating, much obliged for the insight.

Shane you are an absolute savage. Thank you. Excellent.

@TunedbyShaneT

3 жыл бұрын

Appreciated

Oh, btw. do those measurements with Voltage from 7-15Volts because the opening time increases seriously when Voltage drops with high starter demand during Startup exactly when you really need the injector to spray.

man you are doing the lords work right now

@TunedbyShaneT

3 жыл бұрын

Haha

brilliant

@TunedbyShaneT

3 жыл бұрын

Cheers

Lol you read my post on last vid this is what I was trying to say omg my hero

great explanation and presentation , just a heads up, along with the knock sensors, you can also use chassis ears hooked up to the scope and "visually see" things on the waveform, they are also sensitive enough to pick vibrations as well and plot them on the scope i.e. like a bent rim or vibration driveshaft etc... Thanks again for taking the time to share the information.

@TunedbyShaneT

3 жыл бұрын

Thanks for the heads up

@DTEAuto

3 жыл бұрын

@@TunedbyShaneT no need to thank , you have done so much for the industry and are one of the most knowledgeable people that there is. I've watched lots of your content over the years for a very long time and appreciate what you share. Along with what you share, I think that the best part of it all, is your subtle not give a "crap" to conform or please people. It's "raw" and true and you can't "fabricate" it and it makes things genuine. I have been a heavy scope user for sometime now and it has changed my life on how I do my day to day work, I know your a man of super knowledge and are light years ahead , but just as a follow up for the chassis ear set up on a pico, I'll try share link, I now you could probably figure it out on your own as you did with the knock sensor, but it shows how I set it up and use it. thanks again for sharing your knowledge. kzread.info/dash/bejne/iouCsMZ6nM2pqNY.html

@TunedbyShaneT

3 жыл бұрын

@@DTEAuto appreciated once again

This was incredible information, thank you for taking the time to make this Shane. I do have a question to add... when using a low impedance injector with an inline resistor, how does this typically affect the closing dead time? And am I correct in saying that generally, a high impedance injector is a bit easier to setup, at the cost of high rpm control? (Compared to a low impedance injector)

@TunedbyShaneT

3 жыл бұрын

High or low impedance doesnt matter. The current in the circuit matters. Inline resistors limit current and therefore slow down the opening and speed up the closing. Usually you lose more opening than you gain back closing

Also, Shane do you have a video on measuring coil dwell on a picoscope?

An interesting thing to see would be the fuel flow as the injector opens. See how much fuel flows as the injector opens, flow under full open, flow under closing. Probably unnecessary as you would just see a flow number given per pulse width and that's all the ECU needs until you get into the non linear portion.

nice , but i think the injector open before the cnock sensor send the signal

@TunedbyShaneT

Жыл бұрын

No you can pretty much line the two up perfectly on the scope pattern.

Thanks. I did those measurements years ago and plotted my injector dead times with my Picoscope but I never thought of attaching a knock sensor to prove what I new about the mechanics of injectors. How did you attach them?

@TunedbyShaneT

Жыл бұрын

Ziptie

@bernhardlist9359

Жыл бұрын

@@TunedbyShaneT thanks, I do have some knock sensors on order and will try this too.

Just a question. The current trace rises when commanded to the point where you see the slight dip in current. Could this be total injector lift and the remainder higher trace be the extra current needed to hold the injector open till the end of the cycle?

@TunedbyShaneT

3 жыл бұрын

The hump in the top of the trace is where the injector reaches wide open and the peak current continues to rise until it switches to hold mode.

@ronniesmith8965

3 жыл бұрын

@@TunedbyShaneT I think that was what i was trying to explain. thanks

What tool and software did you use for this analysis? Do you have to put an electric current through the knock sensor in order to get a reading from it? Or does it produce a voltage on its own?

@TunedbyShaneT

2 жыл бұрын

I used a Pico Scope which is a PC based scope. The knock sensor generates this signal on its own.

@OilBaron100

2 жыл бұрын

@@TunedbyShaneT how much does the scope cost? Where can I buy one online? Thanks.

@TunedbyShaneT

2 жыл бұрын

The PicoScope can be purchased from various distributors, however mine came from AES Wave

I love these videos. Download obs studio (free) then you can record your screen and it will be much easier to see!

@TunedbyShaneT

3 жыл бұрын

Yeah Ive got one that will do that but then you can record the door demonstration

@JoeSimpsonAtTempest

3 жыл бұрын

@@TunedbyShaneT then you just fire up premiere pro and edit them together so instead of something that takes you an hour to do, it takes 4 hours 🤣

@TunedbyShaneT

3 жыл бұрын

@@JoeSimpsonAtTempest perfect 😂😂😂

Monitoring the fuel pressure might have provided a little more insight.

@TunedbyShaneT

2 жыл бұрын

With the normal sensors we use it’s almost impossible to discern any of this information through fuel pressure. I have logged them with a single pulse using the labscope and even then it’s dodged. High speed sensors would fix that problem.

Good thing "Injector Dad Time"... nice, but don't give up the day job.

@TunedbyShaneT

3 жыл бұрын

😂😂