bitchass 205 0 Posted September 27, 2006 Hello, i fear i may be asking one of the most basic of questions, but what is compression ratio and why is it good if its higher? Michael Share this post Link to post Share on other sites
maturin23 10 Posted September 27, 2006 (edited) It's the ratio between the cylinder and combustion chamber volume with the piston at the bottom of the stroke, and the volume with the piston at the top. It's not necessarily good if it's higher! The compression ratio effects how much the mixture is squashed and therefore has an impact on the temperature the mixture will ignite and the speed of burn. A diesel engine has a very high compression ratio - this allows the fuel to be compressed to the point where it self-ignites. check out wikipedia as a start Edited September 27, 2006 by maturin23 Share this post Link to post Share on other sites
Jonmurgie 2 Posted September 27, 2006 http://en.wikipedia.org/wiki/Compression_ratio Share this post Link to post Share on other sites
bitchass 205 0 Posted September 28, 2006 ahhh i see...... Share this post Link to post Share on other sites
