Patent ID: 11970987
Assignee: HUSCO AUTOMOTIVE HOLDINGS LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A variable compression ratio (VCR) phasing system for varying a rotational relationship between a crank shaft and an eccentric shaft, the VCR phasing system comprising:
a gear hub configured to be in rotational communication with a crank shaft;
a cradle rotor configured to be in rotational communication with an eccentric shaft;
a spider rotor arranged between the gear hub and the cradle rotor, the spider rotor being configured to selectively lock and unlock relative rotation between the gear hub and the cradle rotor;
a planetary actuator coupled to the gear hub and the spider rotor, the planetary actuator configured to receive a rotary input and to provide a corresponding rotary output to the spider rotor to unlock relative rotation between the cradle rotor and the gear hub; and
a first torsion spring and a second torsion spring coupled between the gear hub and the cradle rotor, wherein the first torsion spring and the second torsion spring are configured to apply a first torque load in a first direction between the gear hub and the cradle rotor to offset a second torque load applied in a second direction by at least one of the eccentric shaft and the crank shaft.