multi-fuel

Given that the traditional four-stroke Otto-cycle engine piston engine only has a thermal efficiency of 25-30 percent, there is clearly still plenty of room for improvement. While most of the green automobile attention in recent years has been focused on electrification, liquid fuels still have ...

Volvo announced last week a prototype flexible fuel engine that can burn five different types of fuel: E85, methane (made from either natural gas or plant sources, so Volvo is counting this as two fuels), regular petrol gasoline or hythane, (which is 10 percent hydrogen and 90 percent methane). The ...