System and method for operating a lubrication system with brake actuated valve

A method of operating a lubrication system, the method comprising:

• directing lubricant through a heat exchanger to a lubricant outlet, wherein the lubricant outlet includes a first outlet branch and a second outlet branch;
• directing the lubricant through the first outlet branch to a stator lubrication circuit;
• and
• selectively directing the lubricant through the second outlet branch to at least one of a rotor lubrication circuit, a gearbox lubrication circuit, or an auxiliary lubrication circuit based on a parking status of a park actuator assembly, wherein park actuator assembly includes:
• a parking pawl configured to move between a parking position limiting movement of a drivetrain gear and a release position allowing movement of the drivetrain gear;
• and
• a park actuated valve configured to move into a first position blocking lubricant flow through the second outlet branch when the parking pawl is in the parking position and into a second position allowing lubricant flow through the second outlet branch when the parking pawl is in the release position.

A vehicle comprising:

• a passenger compartment;
• a plurality of wheels supporting the passenger compartment;
• a traction motor having a rotor and a stator with the rotor configured to drive at least one of the plurality of wheels through a gearbox;
• and
• a lubrication system including:
• a heat exchanger having a lubricant inlet and a lubricant outlet, wherein the lubricant outlet includes a first outlet branch and a second outlet branch;
• a stator lubrication circuit fluidly connecting a stator between the lubricant inlet and the first outlet branch;
• a rotor lubrication circuit fluidly connecting a rotor between the lubricant inlet and one of the first outlet branch or the second outlet branch;
• a gearbox lubrication circuit fluidly connecting a gearbox between the lubricant inlet and the second outlet branch, wherein the gearbox lubrication circuit, the stator lubrication circuit, and the rotor lubrication circuit are connected fluidly in parallel with each other;
• a park actuator assembly including:
• a parking pawl configured to move between a parking position limiting movement of a drivetrain gear and a release position allowing movement of the drivetrain gear;
• and
• a park actuated valve configured to move into a first position blocking lubricant flow through the second outlet branch when the parking pawl is in the parking position and into a second position allowing lubricant flow through the second outlet branch when the parking pawl is in the release position.