Auto | Under the Hood | 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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How Diesel Two-Stroke Engines Work

Take diesel-engine technology, throw in a two-stroke cycle, and you've got the basis for the huge engines found in trains and big ships. Learn about the diesel two-stroke engine!


What are the types of internal combustion engines?

What are the types of internal combustion engines? Visit HowStuffWorks.com to learn the types of internal combustion engines. See more »

The Ultimate Hot Bulb Engine Quiz

The Ultimate Hot Bulb Engine Quiz

How well do you know hot bulb engines? Take the Ultimate Hot Bulb Engine quiz to find out! See more »

How a Hot Bulb Engine Works

How a Hot Bulb Engine Works

What were hot bulb engines? Read about hot bulb engines at HowStuffWorks Auto. See more »

How Direct Injection Engines Work

How Direct Injection Engines Work

Direct injection engines offer high efficiency and performance. Learn how direct injection engines work at HowStuffWorks. See more »

How In-wheel Motors Work

How In-wheel Motors Work

The in-wheel motor may make many of your car's components obsolete. Read about in-wheel motors and learn how they work in this article. See more »

Car Smarts: Diesel

Car Smarts: Diesel

The diesel quiz will test your knowledge of diesel engines and how they work. Test your knowledge of all things diesel with this quiz. See more »

How the Tesla Turbine Works

How the Tesla Turbine Works

The Tesla turbine was one of the many inventions of Nikola Tesla, the father of alternating current. Learn more about the Tesla turbine. See more »

Car Smarts: Engines

Car Smarts: Engines

It's under the hood of every car, truck and SUV, but how many people really know how one works? Do you know a spark plug from a fuel injector? See more »

Diesel Engine Pictures

Diesel Engine Pictures

When you hear the word 'diesel' you probably imagine something along the lines of a Mack truck. But what do powerful diesel engines actually look like? Check out this image gallery to see the cutting-edge diesel engines in development today. See more »

Car Engine Pictures

Car Engine Pictures

These car engine pictures have photos that range from small economic 4 cylinders to insanely powerful 16-cylinder engines. Check out the pictures. See more »