How Direct Injection Engines Work
So, you’ve come looking to see how direct injection engines work. Direct injection engines are becoming more and more common because they have such a positive effect on fuel economy and even improve engine performance. So how do direct injection engines work?
In a traditional engine, fuel and oxygen are pulled into a chamber, mixed together, and ignited by a spark. The fuel and oxygen are pre-mixed in the intake manifold before they’re injected into the cylinder where they’re ignited.
With direct injection engines, rather than being pre-mixed, fuel is sent directly into the cylinder, while oxygen is pulled directly in through the intake manifold. This is beneficial for a few reasons. Less fuel is lost this way, so it improves fuel efficiency. It also improves performance because more fuel is being burned, and the spray pattern breaks the gasoline up into smaller droplets.
Direct injection engines used to be considered too complex and costly to be a popular choice for automakers, but advancing technology has helped make this more efficient engine type a more realistic option, which has contributed to its growth in recent years.
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