Omnivorous engine

Lotus have been doing clever stuff developing a flex-fuel two-stroke engine that will run on a range of fuels. It maximises the benefits of 2 stroke power whilst creating minimal emissions.

They've created a brilliant interactive flash version to have a play with. You can adjust the engine speed and load or alter the fuel mix and watch how the exhaust gas scavenging and compression ratio of the head adjust for different scenarios.

It's fascinating stuff.