Direct-injection engines are pretty common in new cars these days, but how exactly do they work? Well, this explainer video put together by the YouTubers at gives us an in-depth look at the inner workings of direct injection and its many variations.
Unlike other types of fuel delivery, which get fuel into the combustion via the intake, direct injection places a high-pressure injector directly into the cylinder head, allowing fuel to be shot directly into the chamber, meaning a more precise delivery and ignition process. Though direct injection systems are usually more expensive and complex, they allow manufacturers to draw more fuel efficiency and power from their motors, which is why the technology is so widespread.
SavageGeese put together an extremely detailed video that goes into detail about how direct injection works, its shortfalls, and how it compares to other types of fuel delivery systems. Watch for yourself below.