Diesel engines cannot work without oxygen, so how do diesel submarines operate when they're underwater? Their propulsion system accounts for this limitation.

Both Cummins and Ford offer 6.7-liter diesel engines. They share a few similarities, but those don't go much further than their displacements.

With up to 1680 Nm of torque, the Core80 is the most powerful engine in the family. Steel pistons and a variable‑geometry turbocharger (VGT) deliver rapid response, strong engine braking and improved ...

The Nano Bee, created by engineer Ronald Valentine, is a diesel engine smaller than a quarter but powerful enough to to spin a model-plane propeller.