Injection valve

An injection valve, comprising a stator and a rotor, the rotor being rotatable relative to the stator about a rotation axis, wherein

• the stator is provided with an inner stator surface and an outer stator surface, the stator is provided with a first through hole, a second through hole, a third through hole, a fourth through hole, a fifth through hole, a sixth through hole, a seventh through hole, and an eighth through hole penetrating through the inner stator surface and the outer stator surface, the inner stator surface is provided with a stator groove, the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole, and the eighth through hole are sequentially disposed on a circle centered on the rotation axis and having a first radius (R1), the sixth through hole and the seventh through hole are sequentially disposed on a circle centered on the rotation axis and having a second radius (R2), one end of the stator groove coincides with the fifth through hole, and the other end of the stator groove extends to the circle of the second radius;
• the rotor comprises an inner rotor surface hermetically engaged with the inner stator surface, the inner rotor surface is provided with a first rotor groove, a second rotor groove, a third rotor groove, a fourth rotor groove, and a fifth rotor groove, the fifth rotor groove comprises a first sub-groove and a second sub-groove connected to the first sub-groove, the first rotor groove, the second rotor groove, and the second sub-groove are spaced apart from each other, two ends of the first rotor groove, two ends of the second rotor groove, and two ends of the second sub-groove are separately located on the circle of the first radius (R1) and the circle of the second radius (R2), the third rotor groove, the fourth rotor groove, and the first sub-groove are spaced apart from each other, and two ends of the third rotor groove, two ends of the fourth rotor groove, and two ends of the first sub-groove are all located on the circle of the first radius (R1).