Chevy Volt could end up with radically different engine!
When an engine operates in a constant mode like that it can be optimized for those conditions. However while the original Volt showed a fairly conventional three cylinder flex-fuel engine, there is also the possibility of using something radically different. We recently covered work being done on homogeneous charge compression ignition (HCCI) engines that can provide significantly reduced fuel consumption and emissions. Unfortunately getting HCCI works best only under certain light load conditions. However the series hybrid may well provide the perfect application for something like HCCI.
During a conversation with GM Vice President of R&D Larry Burns I brought the idea of HCCI and E-Flex and he agreed that the series layout could be a potential application for the new combustion process. Burns said that GM is investigating many different possibilities for the E-Flex power-train because the constant rpm duty cycle allows many ideas that might not have been feasible before suddenly become a real possibility. A whole new world gets opened up by this setup so thing only thing that's certain right now is change.
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