We've seen some bonkers engines in our day, and truth be told, this three-cylinder diesel isn't the strangest of the lot.

The world of automotive engineering is filled with innovation and experimentation, leading to some rather unusual engine designs that made it to production, albeit briefly. These engines often broke ...

Runge Cars announces a 5.3-liter air-cooled flat-eight engine for its lightweight R3 supercar – and it's compatible with ...

The strange and clever V4 engine design Lancia developed in the 20th century helped small sports cars like the Fulvia become ...

From 1945 to 1955, a British aeronautical company called Napier & Son produced not just one but two versions of an intricate ...

Ferrari continues to explore hydrogen-powered drivetrain solutions, patent documents discovered by AutoGuide.com indicate Ferrari is looking at a two-stroke 3- or 6-cylinder opposed piston engine ...

The Napier Deltic, a triangular diesel engine with 38 pistons, powered British trains and naval vessels with unmatched ...

Porsche has filed a patent for a unique W12 engine design, sparking rumors about its purpose. The new engine features three ...

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 ...

Internal combustion engine development is far from stagnant these days, in spite of the advances in electric powertrains in ...