Subject : How does a diesel engine differ from a petrol engine? Source : You Magazine

News : A diesel engine is a compression-ignition engine; a petrol engine is a spark-ignition engine. A petrol engine takes in a mixture of petrol gas and air, compresses it and ignites, the mixture with a sparic a diesel engine takes in only air, compresses it, then injects fuel Into the highly compressed air, resulting in self-ignition. > Diesel fuel requires less refining so it’s generally cheaper than petrol. > Diesel fuel has a higher energy density than petrol. This, combined with the greater efficiency of diesel engines, explains why diesel engines get better fuel economy than equivalent petrol engines. A Diesel engines are generally more expensive than petrol engines but the diesels are more efficient, giving more kilometres to the litre. Diesels produce more torque (pulling power) than petrol engines which makes driving easier, especially in heavy city traffic. Although service intervals for old diesels are shorter the new diesels have the same service intervals as petrol vehicles.