What are the key differences between diesel and petrol engines?

Question

Accepted Answer

Petrol engines ignite fuel with a spark, while diesel engines use compression for ignition, leading to efficiency and power differences.

Petrol engines use spark plugs for ignition, while diesel engines rely on compression ignition.
Diesel engines are generally more fuel-efficient than petrol engines due to higher compression ratios.
Petrol engines tend to produce more power and higher RPMs, making them suitable for lighter vehicles.
Diesel engines produce more torque, making them ideal for heavy-duty vehicles like trucks and buses.
Examples: A Honda Civic typically has a petrol engine, while a Ford F-250 often features a diesel engine.

Accepted Answer

Answer 
Petrol engine 
It works on otto cycle .
It has ports .
Its engine is small and light .
The engine is lightweight .
It has a carburetor .
It cannot travel long distances .

Diesel engine 
It works on diesel cycle.
It works on an air compressor.
It also has valves.
The design of this engine is complex .
It can easily cover long distances .
This is seen in big car.

Accepted Answer

The primary difference (as most of you already know), is that petrol engines use spark plugs to ignite the air-fuel mixture, while diesel engines rely on heavily compressed air without any spark plugs.

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What are the key differences between diesel and petrol engines?

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