Fuel Injector: Description and Operation

2440 Fuel injector (EV-6)

Small external dimensions and low weight characterize this fuel injector.
The risk of vapor lock with hot fuel is very low. As a result, it is well suited for use with returnless fuel systems, since fuel temperature in the fuel injector compared with system with return is higher







Fuel is atomized with a perforated disk (4 holes). The stamped injection orifices provide great consistency in the quantity of injected fuel as well as insensitivity to fuel deposits. Good tightness in the area of the injector seat is ensured through the cone/sphere sealing.

In the Cayenne S, the fuel injectors are designed for a maximum injection volume of 210 g/min. In the Cayenne Turbo, this volume was adapted to 349 g/min because of the increased engine performance.







The DME control module activates each fuel injector sequentially. This allows injection of the fuel for each cylinder in a precisely defined time interval, even when driven in a sporting manner, which contributes to reducing fuel consumption and the emission of pollutants.