Mazda said on its site that increasing the compression ratio considerably improves thermal efficiency. For SkyActiv-G Generation 2, Mazda will adopt homogeneous charge compression ignition (HCCI) and an even higher compression ratio of 18:1 over SkyActiv-G Generation 1 high compression ratio of 14:1. Mark Tisshaw, writing in Autocar, said "So efficient is its latest internal combustion engine technology, the Japanese firm claims that it could even eclipse pure electric cars for well-to-wheel CO2 emissions, without adding expensive and heavy hybrid or plug-in hybrid components."Īt Mazda, the engine of the future is called the SkyActiv-G Generation 2, a follow-up to Mazda's SkyActiv-G Generation 1.
Specifically, the spotlight is on advances in Mazda's SkyActiv engine technology. Though not due for some years to come, the very idea of a gasoline engine efficient enough to release less carbon dioxide than an electric car was tantalizing enough to make the numerous blog and car site headlines. As noted, while electric cars do not pump out CO2 as they travel, they have a carbon footprint created when the electric power they run on is produced.
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