Engine Balance Shaft?

Only the hybrids have an Atkinsonized engine. The others could get closer to an Atkinson cycle than previous engine models, but they are still an Otto cycle base. Dynamic Force engines have direct and port injection. Direct injections allows a higher actual compression ration without needing higher octane. The high compression ratios in an Atkinson engine are really just the expansion ratio of the power stroke; compression/charge stroke has a lower effective compression ratio.