What type of fuel system delivers fuel directly into the combustion chamber?

Direct Fuel Injection is the correct choice because this system delivers fuel directly into the combustion chamber of each cylinder under high pressure. This method allows for precise control of the fuel-air mixture, improving efficiency and performance. By injecting the fuel directly at the optimal moment during the intake or combustion phase, it enhances combustion efficiency, resulting in better power output and reduced emissions.

The design of Direct Fuel Injection systems enables better atomization of the fuel, which facilitates more effective mixing with air and contributes to more complete combustion. This technology is often employed in modern engines to improve fuel economy and performance, particularly in turbocharged applications where better control of the air-fuel mix is crucial.

In contrast, Port Fuel Injection injects fuel into the intake manifold, where the air and fuel mix before entering the combustion chamber. This difference in location makes Distinct Fuel Injection more advantageous in terms of power and efficiency under specific conditions. Sequential and Batch Fuel Injection systems also refer to variations in how fuel is delivered between cylinders, rather than the direct injection into the combustion chamber seen in Direct Fuel Injection.