Diesel fundamentals

Hi , everyone. I would like to use the opportunity to ask the question to professionals ... I've started with Diesel tunning fundamentals..

Lesson Effect of AFR on Power and Torque. All is clear but why the boost doesn't rise when we add more fuel ? Is the turbo wastegate?

How is boost controlled on your application? Does it have a wastegate or variable vane or nozzle turbo?

I don't understand this thing from the video and tryed to ask the author about this... I hope that they read sometimes the threads)))

The author adds the fuel at 2000 rpm and AFR decreases but intake pressure stays on the same position. How did they do these things?

Would you please post the video in question?

https://www.hpacademy.com/dashboard/courses/diesel-tuning-fundamentals/diesel-fundamentals-effect-of-afr-on-power-and-torque

This is the link..

I can't download it and upload here...

Ruslan,

Your expectation is correct, and yes I would say the turbo system likely has a wastegate, variable vane or nozzle setup, or other means of adjusting exhaust backpressure which allowed the system to maintain stable boost pressure while fuel delivered was increased.