Control device for at least one motorized plunger device and method for operating a hydraulic braking system of a vehicle

A hydraulic braking system for a vehicle, comprising:

• a control device for at least one motorized plunger device of a hydraulic braking system of a vehicle, the control device including:
• an electronics device which is configured for activating a motor of the motorized plunger device, wherein, with the aid of the electronics device:
• a braking pressure increase in at least one wheel brake cylinder of the hydraulic braking system is effectuatable by moving a plunger of the motorized plunger device, with the aid of the motor activated by the electronics device, in a pressure build-up direction, so that brake fluid is transferrable from the motorized plunger device into the at least one wheel brake cylinder;
• and
• a volume supplementation in the motorized plunger device is effectuatable by moving the plunger of the motorized plunger device with the aid of the motor activated by the electronics device at a maximum movement speed by a maximum movement travel in a pressure reduction direction which is directed opposite to the pressure build-up direction, so that brake fluid is drawable out of a storage volume of the hydraulic braking system into the motorized plunger device;
• wherein the electronics device is configured to, before a volume supplementation:
• establish at least one setpoint variable regarding at least one of:
• the maximum movement speed and the maximum movement travel, of the plunger during the volume supplementation while taking into consideration at least one provided variable regarding at least one of:
• (i) current driving situation information, and (ii) current surroundings information;
• and
• activate the motor of the motorized plunger device during the volume supplementation with consideration for the at least one established setpoint variable in such a way that, during the volume supplementation, the at least one of the maximum movement speed and the maximum movement travel corresponds to the at least one established setpoint variable;
• the motorized plunger device;
• and
• the at least one wheel brake cylinder.

A method for operating a hydraulic braking system of a vehicle, comprising:

• carrying out a braking pressure increase in at least one wheel brake cylinder of the hydraulic braking system by moving a plunger of a motorized plunger device of the hydraulic braking system in a pressure build-up direction in such a way that brake fluid is transferred out of the motorized plunger device into the at least one wheel brake cylinder;
• and
• carrying out a volume supplementation in the motorized plunger device by moving the plunger of the motorized plunger device at a maximum actual movement speed by a maximum actual movement travel in a pressure reduction direction, which is directed opposite to the pressure build-up direction, in such a way that brake fluid is drawn out of a storage volume of the hydraulic braking system into the motorized plunger device;
• establishing at least one of:
• (i) a maximum setpoint movement speed for carrying out the volume supplementation, and (ii) a maximum setpoint movement travel for carrying out the volume supplementation, the establishing being with consideration of at least one variable regarding at least one of a current driving situation information and a current surroundings information;
• and
• activating a motor of the motorized plunger device, while carrying out the volume supplementation, with consideration of the established at least one of the maximum setpoint movement speed and maximum setpoint movement travel, in such a way that, during carrying out the volume supplementation, at least one of:
• (i) a maximum actual movement speed corresponds to the established maximum setpoint movement speed, and (ii) the maximum actual movement travel corresponds to the established maximum setpoint movement travel.