Depends on what year the engine was made. Late 60's and early 70's produced around 10.5:1. Later years could be as low as about 8.8:1
S.I Engine lower compression Ratio is 6 to 11
8.9 to 1
The heat from compression is so high that the fuel will auto-ignite when injected.
It depends on equal compression between all cylinders.
The compression ratio of a Diesel ranges from 14:1 to as high as 25:1. I agree just depends on engine.
because a diesel engine ignites its fuel with pressure, and not with a spark like a petrol engine. that is why a petrol engine does not need as high a compression ratio as a diesel engine
the diesel engine. it takes one ignition to start, then it runs off of (autoignition) ignition from heat caused by high compression. compression ignition (autoignition) causes ignition to happen a little earlier than spark ignition engines (gas engines) which is less vulnerable to risk of engine knocking or wasted power when dealing with high compression. -maddmatt
Diesel engines rely on heat and high compression to ignite fuel.
The 2013 Lexus LS-460 has a V8 engine.
The 2012 Lexus LS-460 has a V8 engine.
The 2008 Lexus LS-460 has a V8 engine.
The 2010 Lexus LS-460 has a V8 engine.