If you think direct-injection diesel engines made their debut in the 1980's, think again. The first diesel without extra ...

Port fuel injection has some big advantages, but automakers increasingly are using gasoline direct injection instead. The ...

Automobile engines have undergone tons of changes over the years, primarily to make them more efficient. For the most part though, engine changes result from a string of iterative improvements on ...

However, not all innovations are equal, and nor do they follow a constant upward trend. Instead, their evolution takes the form of an S-shaped curve that reflects their typical lifecycle from early ...