What makes a diesel engine different to a regular gas engine, and is one better than the other?

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

Scientists are exploring a surprisingly simple way to clean up diesel engines: adding tiny droplets of water to the fuel. During combustion, the water rapidly vaporizes, triggering micro-explosions ...

Internal combustion engine blowby, whether gasoline or diesel, occurs when part of the compressed mixture of air and fuel leaks past the piston rings during the compression or power strokes of a ...