Diesels Vs Petrols Flashcards
1
Q
Describe the cycle of a Diesel engine.
A
4 Stroke Cycle (Intake, Combustion, Power, Exhaust)
2
Q
Describe the cycle of a Petrol engine.
A
2 Stroke Cycle (Combustion, Power)
3
Q
Describe how a Petrol engine works.
A
A petrol engine takes in a mixture of fuel and air, compressed it and ignites the mixture with a spark.
4
Q
Describe how a Diesel engine works.
A
Takes in just air, compresses it and then injects fuel into the compressed air. The heat of the compressed air ignites the fuel.
5
Q
What is the ratio for compressed air in diesel engines?
A
Typically around 14 to 24 times it’s original volume.
6
Q
What is the ratio for compressed air in petrol engines?
A
Around 7 to 10 times it’s original volume, high performance engines may have a higher compression ratio of up to 13.
