However, third-generation product, it's blasting process integrity and maintain stability, second-generation products than any of the injection process is complete, the old injection system limit each injection process, each jet fuel injection process up to five to seven times. The results show that third-generation common-rail system will reduce the emission of 15% ~ 2 O%, while the engine power increase by 5% to 7%.

The integration of the piezoelectric injector, or the piezoelectric actuator together with the nozzle valve installed in the first-injector, the fuel injection system to improve speed. As high-speed injection conversion, each an independent fuel injection process they reduce the interval between the time, so that more flexible control jet engines produce more power. The researchers are also trying to reduce the fuel injector in the moving parts, the nozzle needle on the activities of components from four reduced to one.