Particulate emissions from a highly boosted gasoline direct injection engine

What is it about?

Smaller engines, with the same power output as traditional naturally aspirated engines are becoming common in the market. It is important to understand how particulate emissions from these engines change compared to existing market engines. This paper presents these results, showing that in general the behaviour is similar to the established literature, however, small particle sizes are prevalent.

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Why is it important?

Highly boosted GDI engines are becoming increasingly prevalent in the market, and will continue to do so due to their fuel economy benefits. Here we looked at the particulate emissions from an extreme example of these engines and found very small particles were emitted. This has important implications for future aftertreatment design and the impacts of pollution from these engines.

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