Multifunctional transmission valve with integrated load brake function

A self-propelled work vehicle comprising:

• a vehicle frame;
• a plurality of wheels or tracks supporting the vehicle frame from a ground surface;
• one or more work implements supported from the vehicle frame;
• a battery;
• an electric motor configured in a drive mode to use electric power from the battery to drive one or more of the wheels or tracks and configured in a regenerative mode to generate electric power to be stored in the battery when the electric motor is driven by kinetic energy of the vehicle;
• a hydraulic pump driven directly or indirectly by the electric motor to provide hydraulic fluid to a hydraulic system of the vehicle;
• a steering valve configured to direct hydraulic fluid from the hydraulic system to a steering actuator to steer the vehicle;
• a steering priority valve configured to prioritize supply of hydraulic fluid from the hydraulic system to the steering valve, the steering priority valve including a load sense input port;
• a proportional relief valve communicated with the steering priority valve to provide a load sense signal to the load sense input port of the steering priority valve;
• and
• a controller configured to detect whether the battery is able to be further charged and in response to a determination that the battery should not be further charged to send an adjustment command signal to the proportional relief valve commanding the proportional relief valve to increase the load sense signal from the proportional relief valve to the load sense input port of the steering priority valve so that a standby pressure in the hydraulic system between the pump and the steering priority valve is increased thereby increasing a load on the pump to provide a hydraulic load brake function.