TYPES OF ENGINES

The types of engines you'll learn about in this section include diesel, rotary, HEMI, stirling and quasiturbine, to name a few. You'll also see photos and animated images of the technologies we explore.
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5 Benefits of Beltless Engines

Look under the hood of most cars and you'll probably find one or more pulley-driven belts. But if one of those engine belts break, your car can suddenly become undriveable.

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  • How HEMI Engines Work

    How HEMI Engines Work

    Even if you don't know much about cars, the word "HEMI" might still mean something to you. It's become a synonym for big, powerful engines. See more »

  • How In-wheel Motors Work

    How In-wheel Motors Work

    It's possible that someday there may be no need for a lot of the components that you currently find under the hood of a car or truck. That is, if the vehicle is equipped with in-wheel electric motors. See more »

  • How Opposed Piston Opposed Cylinder (OPOC) Engines Work

    How Opposed Piston Opposed Cylinder (OPOC) Engines Work

    Internal combustion engines aren't going away anytime soon. And since a practical alternative can't be ready for use within the next few years, we need a better internal combustion engine in the meantime. See more »

  • How Quasiturbine Engines Work

    How Quasiturbine Engines Work

    The quasiturbine engine takes the Wankel concept and improves on it: Instead of three combustion chambers it has four and the setup of a quasiturbine allows for continual combustion. Learn all about the quasiturbine. See more »

  • How Rotary Engines Work

    How Rotary Engines Work

    A rotary engine is an internal combustion engine, but it's not like the one in most cars. Learn about the unique rotary setup and how it compares performance-wise to a piston engine. See more »

  • How Sleeve-valve Engines Work

    How Sleeve-valve Engines Work

    The sleeve-valve engine may have already been dismissed as a historical relic; however, at least one company is seeking to bring the sleeve-valve engine back into action -- with a few modern twists. See more »

  • How Stirling Engines Work

    How Stirling Engines Work

    The Stirling engine is a heat engine that is vastly different from the internal-combustion engine in your car. It has the potential to be more efficient than most types of engines, but it hasn't made it into mass production yet. Find out why. See more »

  • How the Grail Engine Works

    How the Grail Engine Works

    The Grail Engine takes a variety of modern, cutting-edge engine technologies and puts them all together in one package. Honda and Ford have already shown interest -- should the rest of us? See more »

  • How the Hüttlin Spherical Engine Works

    How the Hüttlin Spherical Engine Works

    It may take a bit of time to understand how this ball gets rolling; but once you get it, you'll see how it just might take hybrid auto engineering to the next level. See more »

  • How the Tesla Turbine Works

    How the Tesla Turbine Works

    High gas prices are driving people to look at alternatives to fossil fuels, such as a turbine designed by the father of alternating current, Nikola Tesla. See more »

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