4/10/2023 0 Comments Weight of diesel fuel![]() The calorific value of diesel fuel is roughly 45.5 MJ/kg (megajoules per kilogram), slightly lower than petrol which is 45.8 MJ/kg. Diesel and petrol enginesīy virtue of the combustion process and the overall engine concept, a diesel engine can be up to 40% more efficient than a spark-ignited petrol engine with the same power output, ceteris paribus, particularly with new ‘low’ compression diesels. ![]() Per litre, diesel contains more energy than petrol and the vehicle’s engine combustion process is more efficient, adding up to higher fuel efficiency and lower CO2 emissions when using diesel. Diesel is in principle easier to refine than gasoline, however it contains more pollutants that must be extracted before it can reach the same levels of emissions as petrol. Conventional diesel and petrol are both produced from mineral oil, but the precise refining methods vary.
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