Higher than a gasoline engine.
The diesel engine is on compression.
typical compression test reading fora diesel engine
Compression.
2.5 liter Petrol 8-1 diesel 25-1 compression
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
Compression ignition engine.
The compression ratio of a Diesel ranges from 14:1 to as high as 25:1. I agree just depends on engine.
No, absolutely not. Diesel engines run at a much higher compression than gasoline engines. A typical gasoline engine has a compression ration of 10:1 while the typical diesel compression ratio is 20:1 or higher. The diesel burns fuel through compression and the gasoline burns by ignition. You must use an oil with an API rating of C (Compression) in a diesel. Gasoline engines use API rating S (Spark). Use exactly the proper weight and API rating as listed in your owner's manual. Use a gasoline motor oil and you will destroy that diesel engine. -IMPROVED - I totally agree with Almostevil. I own a diesel and this is what I use. So, I didn't "improve" his answer but do back it up!
Because a diesel ignites due to the heat caused by the compression pressures in the diesel engine.
It won't run, that's for sure. Diesel is ignited by compression pressure, not by spark. And the compression in a gasoline engine is not sufficient to ignite the diesel.
Diesel engine
It has a compression ratio of 17.5:1