Common rail direct fuel injection system is a really modern variant of direct fuel injection for petrol and diesel engines.

On diesel engines, it possesses a high-pressure (over 1,000 bar/15,000 psi) fuel rail feeding individual solenoid valves, dissimilar to low-pressure fuel pump feeding unit injectors . Third-generation common rail diesels now feature piezoelectric injectors . . . → Read More: Common Rail Diesel