What is the difference between a diesel engine and a petrol engine?

What is the difference between a diesel engine and a petrol engine?

Petrol engine is fitted with spark plug whereas diesel engine is fitted with a fuel injector. In petrol engine the fuel that burns has high volatility. In diesel engine the fuel of less volatility is burnt. Petrol engines are used in light weight vehicles like car, motorcycles, scooters etc.

Which is better engine diesel or petrol?

Apart from a fact that diesel engines are more powerful than petrol engines, they also have a higher torque and hence they give a smoother drive. … In petrol engines the power developed is low due to compression ratio whereas in diesel engines, the power is more.

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What lasts longer diesel or petrol engines?

Diesel engines do last longer than petrol ones. Diesel is a light oil and when burned and used as fuel by the vehicle it lubricates the parts of the engine. This prolongs the life of the engine. … This is partly because of the intricate fuel pump which is expensive to repair or replace.