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Air charge estimation thesis

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I was discussing with someone how a larger turbo makes more power than a smaller one on the same boost pressure. Basically it comes down to lots of factors but the main one is reduced backpressure and heat. Anyway as I was trying to work out how much the aircharge changes based on turbo size I found this really good write up on air charge estimation from a PHD thesis.

Looks like a really good read if you have time and are interested in the physics behind how the speed density models work.



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