The four-cycle, or Otto cycle, engines that powers today's cars derived from designs attributed to pioneers like Nicholaus Otto, for whom the Otto cycle is named. Otto received a patent for his design ...
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How the Atkinson cycle works - car engines

How does a hybrid car engine work? The modern Atkinson cycle is used by cars such as the Toyota Prius, Ford C-max and Fusion Hybrids, Lexus CT200h, and Mazda SkyActive engines. The basic difference ...