Variable shunt phaser with pressure relief mechanism

A motor for an electric vehicle, comprising:

• a rotor shaft;
• and
• a variable shunt phaser rotatable with the rotor shaft, the variable shunt phaser comprising:
• a shell configured to rotate with the rotor shaft, the shell including a housing, a gear plate a back plate coupled to form an enclosed space within the shell, wherein rotation of the shell creates a pressure differential between an outer diameter of the shell and an inner diameter of the shell;
• an inner rotor disposed within the enclosed space, the inner rotor configured to rotate with respect to the housing;
• a relief orifice in the back plate at the outer diameter of the shell;
• a blade coupled to an exterior section of the inner rotor, wherein the blade is external to the shell and is rotatable with respect to the back plate;
• and
• an escape hole in the blade, wherein rotation of the inner rotor with respect to the housing moves the escape hole into alignment with the relief orifice to open the relief orifice, thereby reducing the pressure differential within the enclosed space.

A power system, comprising:

• a stator;
• a rotor;
• and
• a variable shunt phaser rotatable with the rotor to control a timing between the stator and the rotor, the variable shunt phaser comprising:
• a shell configured to rotate with the rotor, the shell including a housing, a gear plate a back plate coupled to form an enclosed space within the shell, wherein rotation of the shell creates a pressure differential between an outer diameter of the shell and an inner diameter of the shell;
• an inner rotor disposed within the enclosed space, the inner rotor configured to rotate with respect to the housing;
• a relief orifice in the back plate at the outer diameter of the shell;
• a blade coupled to an exterior section the inner rotor, wherein the blade is external to the shell and is rotatable with respect to the back plate;
• and
• an escape hole in the blade, wherein rotation of the inner rotor with respect to the housing moves the escape hole into alignment with the relief orifice to open the relief orifice, thereby reducing the pressure differential within the enclosed space.