Originally Posted by ever_green
a paper regarding effects of ignition timing, air fuel ratio and ethanol on brake specific fuel consumption and torque.
An old paper pushing old ideas, one by Ricardo that ethanol can be efficient, if you tinker enough with a gasoline engine designed & built to burn 100% gasoline(ethanol-free).
Well, the many hundreds of millions(more?) of gasoline engines, designed & built to burn 100% gasoline, are still at their best when burning 100% gasoline..... no tinkering or expensive or time consuming modifications need apply.
This is NOT rocket science, but it is good 100% gasoline engine science.