How is Mazda's engine?

[JaylaAnn]

Mazda's rotary engine is a significant highlight. In recent years, Mazda has developed a compression-ignition engine, whose fuel economy can rival Toyota's hybrid and Honda's hybrid systems, although it has not been installed in domestic models. For Mazda, besides its youthful and sporty appearance, its biggest selling point is Skyactiv technology. It's worth noting that Skyactiv is not just about the engine but also includes optimization technologies for the transmission, chassis, and body structure. Skyactiv gasoline engines actually feature two cycle modes: the Otto cycle and the Miller cycle. The Otto cycle is a mode where the compression ratio equals the expansion ratio, while the Miller cycle is a mode where the compression ratio is less than the expansion ratio. Under high-load conditions, the engine operates in the Otto cycle, while in other conditions, it switches to the Miller cycle.