What is an Atkinson cycle engine and why do automakers use it?

You're probably familiar with the standard combustion process that powers most cars, but some engines use a more efficient ...
Engineering Explained on MSN

What is engine braking? What is a Jake brake?

What Is Engine Braking? What Is A Jake Brake? How does engine braking work? How do you engine brake with a manual transmission? How does a jake brake work? How do diesel cars engine brake? This video ...