Every new internal combustion car and truck sold in America today is equipped with a four-stroke engine, as are the vast majority of motorcycles. Today, if you hear the loud, ringing song of a ...

Unit shown in the bottom of the photograph has been removed to show operation of the V-drive which is base of V-four engine.Ring gear shown on lower shaft of top unit is driven by a pinion mounted to ...

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

The INNengine e-Rex is tiny and can change compression ratios in the blink of an eye. But that's just the start of what makes it different from other engines.