Balance valve type oil sprayer based on magnetostrictive effect

The utility model discloses a balance valve type fuel injector based on the magnetostrictive effect, and belongs to the technical field of fuel injection. The fuel injector comprises a pre-tightening nut, a plastic cover, a screw A, a driving coil, a bias coil, a giant magnetostrictive rod, a driving shell, a giant magnetostrictive rod shell, a coil rack, an adjusting cushion block A, an isolation gasket, a connecting nut, a reversing cylinder body, a ball valve seat, a fuel injector body, a plunger, a needle valve spring, a needle valve, a nozzle locking nut, a nozzle valve body, a screw B, an adjusting cushion block B, a magnetic conductive block A and a magnetic conductive block B, an output rod, a disc spring, an upper sealing cover, an upper piston, a ball valve spring, a lower piston, an oil inlet pipe connector, a lower sealing cover, a balance valve body and a ball valve are included. A T-shaped oil way is additionally arranged in the oil injector ball valve, the influence of hydraulic pressure of a c