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Most drivers know there is a different between petrol and diesel. They know which their automobile needs. They also are aware of the damage that using the wrong fuel will cause. Few drivers, however, can articulate the difference between petrol and diesel. Petrol and Diesel Engines are Similar On the surface, petrol and diesel engines appear to be very similar. They both ignite fuel and convert the combustion s energy into power that propels a vehicle forward. To the uninitiated driver 
, a petrol engine and a diesel engine even look similar. A , though, will be able to point out several differences between these engines. How Petrol and Diesel Engines Work Cars can have either a petrol or diesel engine. On several used , a diesel or petrol engine was an optional upgrade when the car was new. These engines can be installed on the same types of cars, but they work in different ways. Petrol engines require electricity, which is why cars with petrol engines have spark plugs. Petrol engines mix fuel and air and compress the mixture. One a specific pressure is reached, the fuel is ignited by an electric spark. Diesel engines do not use electricity to start the combustion process, so they do not have spark plugs. Diesel engines compress the air, before fuel is added to it. The air heats up as it is compressed. Once it is at a high pressure, fuel is injected into the air. The air s high temperature causes the fuel to ignite. The Difference in Petrol and Diesel Fuel Since petrol and diesel engines work differently, they need different fuels. Petrol engines, because they rely on electricity, can operate at a lower temperature and pressure than diesel engines. Therefore, petrol fuel does not need to sustain the high temperatures and pressures that diesel fuel must. The different operating conditions allow engineers, inexpensive plus size prom dresses inexpensive plus size prom dresses who develop these fuels, wedding dresses to make them with different molecular structures and scientific characteristics. Petrol contains between five and 12 carbon atoms per molecule and boils between 40 C and 205 C. Diesel contains at least 12 carbon atoms and has a boiling range of 250 C to 350 C. There are other characteristics that are different between petrol and diesel fuel, but these are the significant ones. Because they combust in different conditions, they have different properties. Of those properties the boiling point and carbon atoms prom dresses under 100 prom dresses under 100 , which are required to produce carbon dioxide in combustion, are the most important.
, a petrol engine and a diesel engine even look similar. A , though, will be able to point out several differences between these engines. How Petrol and Diesel Engines Work Cars can have either a petrol or diesel engine. On several used , a diesel or petrol engine was an optional upgrade when the car was new. These engines can be installed on the same types of cars, but they work in different ways. Petrol engines require electricity, which is why cars with petrol engines have spark plugs. Petrol engines mix fuel and air and compress the mixture. One a specific pressure is reached, the fuel is ignited by an electric spark. Diesel engines do not use electricity to start the combustion process, so they do not have spark plugs. Diesel engines compress the air, before fuel is added to it. The air heats up as it is compressed. Once it is at a high pressure, fuel is injected into the air. The air s high temperature causes the fuel to ignite. The Difference in Petrol and Diesel Fuel Since petrol and diesel engines work differently, they need different fuels. Petrol engines, because they rely on electricity, can operate at a lower temperature and pressure than diesel engines. Therefore, petrol fuel does not need to sustain the high temperatures and pressures that diesel fuel must. The different operating conditions allow engineers, inexpensive plus size prom dresses inexpensive plus size prom dresses who develop these fuels, wedding dresses to make them with different molecular structures and scientific characteristics. Petrol contains between five and 12 carbon atoms per molecule and boils between 40 C and 205 C. Diesel contains at least 12 carbon atoms and has a boiling range of 250 C to 350 C. There are other characteristics that are different between petrol and diesel fuel, but these are the significant ones. Because they combust in different conditions, they have different properties. Of those properties the boiling point and carbon atoms prom dresses under 100 prom dresses under 100 , which are required to produce carbon dioxide in combustion, are the most important.