* Compression Ignition: Unlike gasoline engines which use a spark plug, diesel engines rely on the heat generated by compressing air to ignite the fuel.
* High Compression Ratio: Diesel engines have a much higher compression ratio than gasoline engines. This means the air is squeezed into a much smaller space, significantly increasing its temperature.
* Fuel Injection: As the air is compressed, the fuel is injected directly into the combustion chamber. The extremely hot compressed air causes the fuel to auto-ignite.
Let me know if you'd like more details on how diesel engines work!