Researchers in Hong Kong have developed a hybrid-energy heat pump that seamlessly combines absorption and compression cycles using crystallization-free ionic liquids, improving efficiency and ...

Mazda's Miller-cycle engine was a notable entry in the annals of automotive history, combining variable valve timing with a screw-type supercharger to maximize the brief compression cycle. The most ...

More and more, manufacturers are using engines that take advantage of what's called the Atkinson cycle for engine combustion, especially with hybrids. A great example is the new-for-2017 Toyota Prius ...