The benefits of variable compression ratio
Variable compression ratio engines

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The benefits of variable compression ratio
Variable compression ratio engines

Authors : Pierre PODEVIN, Adrian CLENCI

Review date: December 17, 2020 | Lire en français

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1. The benefits of variable compression ratio

As the term compression ratio refers to a pressure ratio, it must be defined in the case of an internal combustion engine by :

τc=p2p1( 1 )

with :

p 1
 : 
pressure in the capsulism at the start of compression,
p 2
 : 
pressure in the capsulism at the end of compression.
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