Fuel Efficiency And Lower Emissions With Gasoline Direct Injection Device

Gasoline direct injection or GDI systems have seen a significant rise in popularity in the automotive industry in recent years. The primary advantage of GDI over traditional port fuel injection systems is improved fuel efficiency and reduced emissions. By directly injecting fuel into the combustion chamber instead of upstream in the intake manifold, GDI engines can achieve a more precise fuel-air mix. This results in improved combustion and fuel utilization.

More Precise Mixing For Gasoline Direct Injection Device

In a traditional port fuel Gasoline Direct Injection Device fuel vapor mixes with air ahead of the intake valve. This fuel-air mixture then enters the combustion chamber. However, not all of the fuel may end up being combusted efficiently. Some fuel droplets can end up adhering to the intake port walls, reducing the precision of the air-fuel mix.

 

A direct injected system injects fuel at high pressure directly into the combustion chamber. This allows for a more controlled and homogeneous mixture right at the point where combustion occurs. As a result, there is less excess or unburnt fuel during the exhaust cycle. GDI engines have a thermal efficiency advantage of around 2-4% over port injected engines.

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