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How do gasoline engines differ from diesel engines?

Both gasoline and diesel engines are 4 stroke Internal Combustion Engines,
But both work in a different way. These 2 engines can be distinguished by the way they ignite the fuel. While gasoline relies on spark plugs to ignite the fuel,
Diesel can be self-ignited due to the high temperature and pressure inside the combustion chamber.

Another difference between the 2 engines in the compression ratio.
The compression ratio of gasoline engines is in the range of 6:1 to 10:1,
And it can go up to 12:1 for higher octane gasoline. The diesel engine’s compression ratio is between 16:1 to 20:1.

Petrol engines are quick burn engines,
This results in faster combustion of the fuel and hence more power is generated compared to diesel engines. Diesel engines are slow-burn engines and hence more time is taken to burn the fuel,
Resulting in higher torque than gasoline engines.

Air-fuel mixture can be sent in the suction stroke of gasoline engines,
Which makes it a homogeneous mixture engine. Air and diesel don’t mix well at room
Temperature and hence cannot be sent together in the suction stroke of diesel engine,
Hence, it is called a heterogeneous mixture engine.

To know more about the working of both petrol and diesel engines,
Click the link below:

Ekster EU


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