Diesel cars have received a great deal of bad press these last few days. Some reports say that some countries are banning them from city centre but fail to mention that this only applies to older vehicles. Euro 6 vehicles are not excluded. Little mention is made of the higher carbon dioxide emissions of petrol vehicles.
The power wasted in the combustion chamber of an internal combustion engine depends mainly on the compression ratio. Petrol engines simply cannot function at very high compression ratios.
Euro 6 diesel engines are costly to manufacture due to the complexity of making the engine comply with the limits at various engine loadings and speeds.
Clearly a diesel electric hybrid car could tick all the boxes. Now if this drive train could be put in my Octavia …….