Diffrence between diesel and petrol engine

Question

Accepted Answer

Diesel engines use compression ignition while petrol engines use spark ignition.

Diesel engines use compression ignition, where fuel is ignited by the heat of compressed air, while petrol engines use spark ignition, where fuel is ignited by a spark from a spark plug.
Diesel engines are more fuel efficient than petrol engines due to higher compression ratios.
Petrol engines generally have higher power outputs and higher RPM limits compared to diesel engines.
Diesel engines produce more torque at lower RPMs, making them suitable for heavy-duty applications like trucks and industrial machinery.
Petrol engines are typically quieter and smoother running compared to diesel engines.
Diesel engines have a longer lifespan and require less maintenance compared to petrol engines.
Examples of diesel engines include those found in trucks, buses, and generators, while petrol engines are commonly used in cars, motorcycles, and lawnmowers.

Accepted Answer

Petrol engine fitted spark plug necessery when fuel is burnt but diesel engine not necessary spark plug when fuel is burnt

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