Patent ID: 11939890
Assignee: KIA CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. The continuous variable valve duration apparatus of claim 1, wherein:
an inner shaft is formed in either the front control shaft or the rear control shaft, while an outer shaft is formed in the other shaft among the front control shaft and the rear control shaft; and
the inner shaft is rotatably inserted into the outer shaft, and
wherein the phase controller comprises:
a stator mounted on the inner shaft;
a rotor mounted on the outer shaft;
a phase angle sensor configured to measure a relative phase angles of the inner shaft and the outer shaft;
a plurality of slip rings rotatably mounted on the outer shaft to apply power and control signals to the rotor; and
brushes contacting the plurality of slip rings, respectively.