A Green Combustion Future?
Combustion engines won’t vanish completely any time soon, if ever. Certain transportation tasks or operating environments simply don’t lend themselves to battery- or hydrogen-powered electric propulsion. A century and a half of research and development has greatly increased the efficiency of combustion engines, and engineers have loads of additional tricks up their sleeves that promise to extract even more work from a molecule of fuel while producing even fewer harmful emissions. Here are but a few we’re keeping our eyes on, listed in order of complexity and cost to implement.
