Abstract:
Gasoline direct injection is a latest variant of fuel injection employed in modern two- and four- stroke petrol engines. The petrol/gasoline is highly pressurised, and injected via a common rail fuel line directly into the combustion chamber of each cylinder, as opposed to conventional multi-point fuel injection that happens in the intake tract, or cylinder port.
Gasoline direct injection enables a stratified fuel charge (ultra lean burn) combustion for improved fuel efficiency and reduced emission levels at low load.
A combustion system with high-velocity jet air induction and a high swirl ratio for effectively reducing engine-out emissions. A catalyst substrate with an ultra-low heat mass that quickens catalyst light-off after engine start and improves the catalyst's emission control performance (improved model).
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