Diesel engines need two things to make power: air and fuel. We know that's grossly oversimplified, but it's true. If you increase the engine's ability to ingest air, you can add more fuel and thus ...

The key to making more power with a diesel engine is being able to add more fuel and air to the combustion chamber. However, along with the acts of compressing more air (increasing boost pressure) and ...

Diesel engines, for all their rugged usefulness, can be tremendously polluting. They produce more NOx -- nitrogen oxides-based emissions -- than gasoline-fed cars, as well as more particulates, aka ...