Actuators & Outputs: PicoScope Port Fuel Injector Analysis

Monitoring the operation of electrical mechanical devices is critical when assessing engine performance. This video reviews the concept of solenoids used for port fuel injector applications. Using an oscilloscope, we review some of the analysis that can be performed to better understand the electrical and mechanical operation of the port fuel injector.
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Components in the video:
- PicoScope 4425a
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[@weldingjunkie]

I’m going to post this in the Pico group this will help a lot of people learning.

[@AdamsAnalysis]

Thank you!

[@nickayivor8432]

SUBSTANTIAL
Thanks 👍
From Nick Ayivor from London England UK 🇬🇧

[@AdamsAnalysis]

Thanks!

[@patbaptiste9510]

that spike in voltage on the trailing edge is the reason we ought not to coil up long high current cables - like welding leads - and hang them over sensitive electronic equipment...especially high voltage / high current leads. they will immediately fry that piece of electronic equipment. The leads themselves can be damaged with such high induced voltages.
The formula for such an induced voltage - not necessary to know - is VL = di / dt * L...where V sub L is the induced voltage - di is the change in current - dt is the change in time. This phenomenon is prone to square waves where the rise and fall times are measured in milliseconds or less Said problem also occurs with DC current upon start up or when it is taken away - which essentially creates a square wave.
The lesson here is do not coil up high voltage / high current leads carrying DC and place them near sensitive electronic equipment.

[@juanlazar8945]

Hi, just I learn to use the oscilloscope and I think it is very well explained, I congratulate you on your great work

[@AdamsAnalysis]

Glad it was helpful!

[@ke6bnl]

Good job

[@weldingjunkie]

Nice job Adam this was a great representation. Love that trainer board you have. Hope you enjoyed your 4th... Jay

[@AdamsAnalysis]

Thanks for watching!

[@bluegizmo1983]

10:46 another thing I think would've been helpful to mention is, along with the dip in the red current channel which corresponds to the injector actually opening, there is also a dip in the blue voltage channel after the voltage spike and just before it returns to system voltage level that actually corresponds to the injector closing.

[@mohamedshinaishin2822]

Very nice introduction & explanation all through the video. Subscribed.

[@AdamsAnalysis]

Thank you!

[@tharakanewan3544]

Do a video about peak and hold injectors too. You are doing a great job.

[@AdamsAnalysis]

Great suggestion, Thank you! I will have to review if we have a vehicle in our fleet with peak & hold.

[@bartscave]

I didn't know pico 7 worked on a Mac.

[@philh9238]

You plan on doing a gdi video soon?