What is present in the intake of a fuel injected engine?

In a fuel injected engine, the intake system is designed to optimize airflow and fuel delivery to the combustion chamber. The key component present in such systems is the throttle valve, which regulates the amount of air entering the engine based on the driver's acceleration needs.

Fuel injected engines often operate with electronic fuel injection systems that inject fuel directly into the intake manifold or combustion chamber, eliminating the need for a Venturi effect typically used in carbureted engines to mix air and fuel.

The throttle valve allows for better control over engine performance and efficiency because it can quickly adapt to varying demands for power. By not relying on a Venturi, which functions by creating a pressure differential that draws fuel into the airstream, fuel injection systems rely on precise fuel delivery techniques that ensure optimal air-fuel mixture under various operating conditions.

Thus, the correct answer accurately reflects that while a throttle valve is necessary for controlling airflow into the engine, a Venturi is not required due to the functionality of the fuel injection system.