Inside a diesel engine's cylinder, compressed air raises the temperature to ignite injected fuel, and the resulting force drives pistons to power the vehicle's main gears. Chief to this combustion ...

While diesel engines don't need spark plugs, they do need air ventilation for proper combustion. This is a problem for vessels traveling underwater, such as submarines. Yet diesel submarines exist and ...

Unlike large vessels traveling on the ocean's surface or most other vehicles on the planet, military submarines do not have windows. A submarine's commander can't tell their helmsman to hang a right ...