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 ...

Direct-injected engines helped modern vehicles produce better fuel economy and stronger performance, but mechanics are ...

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 ...

Direct injection engines deliver fuel at high pressure directly into the combustion chamber. When the fuel spray strikes surfaces such as the piston crown or liner, a thin liquid film forms. This film ...