Why do large vechiles such as lorries use diesel engines?
Predominantly diesel engines are more powerfull as in torque not horse power and are more fuel efficient.Diesel engines also tend to be more reliable and stronger in general than petrol engines. Plus they require less maintenance. The power delivery from diesel engines comes at low level rev’s between 1300-2200rpm.whilst a petrol engine doesn’t produce as much power until 5-6000 rpm therefore the diesel engine never has to work so hard.
