GM Duramax Diesel Piezo Injector Operation
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- Опубліковано 17 вер 2024
- Weber State University - Advanced Vehicle Systems Lab. A brief description and demonstration of the GM Duramax 6.6L Diesel Piezo Fuel Injector system of the 2011 - 2013 GM Duramax equipped trucks. The Piezo crystal stack in this injector can react in 0.0001 seconds and deliver up to 7 injector fuel pulses per combustion event. This injector system is much quicker to react than the previous model injectors that were electromagnetically actuated. This allows for more power, better fuel economy, and cleaner emissions.
We teach current and advanced vehicle technologies to our automotive students at Weber State University and online. For more information visit: www.weber.edu/a...
This video was created and edited by John D. Kelly at WSU. For a full biography, see www.weber.edu/a...
Another superb video to help explain how this work. I was just strugling to explain piezo to my step son last night in an easy to visualize way, this is perfect!
When using the megger you should drain the voltage after each time i believe (well on mine you have too anyway it has a button just for that. That's was in part why it did not go to zero when you left the wire. It also helps keep the bateries last longer.
The crystals change configuration or shape and return back to their original shape great tollerence to any effect of heat or wear. By changine shape, you create a leak within where fuel passes through. You can pulse these so many times and they will always return back to its original shape
Thank you for taking the time to demonstrate this
Hi, Thanks. That is a good idea, it makes sense. I will try that next time.
Yes, the only injector capable of producing 4-6 injection sequences in a single stroke.Pre and post, greatly reducing nox, giving a cleaner burn and eliminating diesel knock resulting in a quieter engine
Would love alot more diesel heavy road transport, mining, marine related videos
And as we all know, the crystals do not operate directly on the pintel. It lifts another piston that changes hydraulic pressure, opening the pintel. Thanks for the video!
Yes. thank you for your feedback!
Very well explained and a good demonstration
Hi, to my knowledge there is no hear build up of any consequence.
thanks for sharing...
lol "lets apply 1000v.....oo it didn't like that" awesome
+kraymer999 LOL, yes, as it turned out, the 1000V setting caused a spark between the meter leads rather than actuating the injector. I had the leads too close together. After I moved them farther apart, it worked fine. Have a great day!
How did you remove the piezo itself from the fuel injector???
Carefully with a Rotary grinder
Is it good ? Bad ? What was this test for ?
Bradley Veldheer Hi, this is just a demonstration of the operation of the piezo stack (a solid-state device). It is not a valid test of anything. Thanks for watching.
Btw, it's not pie(Azo).. It's just.. P ezo
Those injectors are made by Bosch.
Thanks for your feedback. Delphi also makes some.
This is a good qualitative test, but if the injectors can really consume 30Amps times 250Volts for a total of 7500 watts as stated in the video. there is no way that battery powered meter is a good functional test. I assume fluke is correcting the actual applied voltage by changing the displayed impedance. Note that coming in contact with 250 volts dc at 1 amp could be lethal. Thank Tesla for the ac system in our homes.
williammmmkz Thanks for watching. You are correct, this is not a proper method of testing the injector. It is only a demonstration.
That fuel injector is made by bosch.
lol 10:54
Pretty ignorant minded statement this is to make power more efficiently thus getting better emissions and that gives better performance.
PIE-ZOOO.....
Boring
Thank you for taking the time to demonstrate this