Compression Ratio! Turbo and Atmo! High or Low!

284,065 views

Turbofun Crew

Published on Feb 25, 2021
About :

Friends, hello everyone! With you, Klepachevsky, and this time we have a topic that concerns almost every fan of ICE tuning! Our social networks Instagram: / ​ VK: https://vk.com/public185016665 It is not measured in bars, and is often confused with compression, what is it? Exactly, the compression ratio! Oh, this beloved ratio of the combustion chamber volume at BDC to TDC, which everyone is constantly trying to change: either to turbo your naturally aspirated engine, dropping this very ratio, or fans of angry ATM engines, adhering to diametrically opposed goals - to raise this very ratio. Our topic today is as old as the world, why increase or decrease the compression ratio? What will this give us on an ATM engine and what will it lead to on a turbo? Why do almost all car manufacturers nowadays strive to raise it as high as possible (a striking example of this is Mazda Skyactive-X with a compression ratio of 16:1!) and how can we, simple tuners, change the compression ratio correctly. Among other things, today we will discuss not only the static, but also the dynamic compression ratio, because it is thanks to it, to a certain extent, that engines with 14:1 and the widest phases, capable of spinning up to 10-12 thousand revolutions, run. It will be interesting, I promise!) Enjoy watching!

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