摘要:
The invention relates to a method for activating the switching valve of a brake circuit, which is designed for a driver-independent build-up of brake pressure, within the context of a vehicle standstill holding function, in which method: - a standstill of the vehicle is detected and, for as long as the driver actuates the brake during the period of standstill; - during a first phase, the switching valve is activated with a first non-zero current intensity (iUSV1); and - during a subsequent second phase, the switching valve is activated with a second non-zero current intensity (iUSV2); - wherein the first current intensity is selected such that, at said current intensity, the switching valve only just closes; and - wherein the second current intensity is selected such that, at said current intensity, the switching valve is firmly closed.
摘要:
The invention relates to a method for operating a brake-boosted brake system of a vehicle, comprising the following steps: determining braking force information (28) with respect to a driver braking force (Ff), which is applied to the actuating element (10) when an actuating element (10) of the brake system is actuated by a driver of the vehicle; determining an actual speed parameter (34) with respect to an adjustment speed of a servo piston (16) of the brake system to which a servo power (Fu) of a brake booster (14) of the brake system is applied; determining a relative speed parameter (40) with respect to a relative speed of the servo piston (16) relative to the input piston (12); establishing a target speed parameter (50) with respect to the adjustment speed of the servo piston (16) taking into account the determined braking force information (28), the determined actual speed parameter (34) and the determined relative speed parameter (40), and actuating the brake booster (14) taking the established target speed parameter (50) into account. The invention further relates to a control device (24) and to a brake booster (14) for a brake-boosted brake system of a vehicle, and to a brake-boosted brake system for a vehicle.
摘要:
The invention relates to a method for operating a hydraulic vehicle braking system (1) that has an anti-lock control unit (12), the brake master cylinder of said system (2) having an electromechanical brake booster (13). As the pressure level of the vehicle braking system (1) decreases during an anti-lock control, in which all vehicle wheels are controlled, according to the invention the boosting force of the brake booster (13) is reduced in an anti-lock control of this type.
摘要:
The invention relates to a method for operating a hydraulic brake system of a vehicle, comprising the following steps: receiving a specification (14) provided by a control system of the vehicle in regard to a target pressure change in at least one wheel brake cylinder (64a - 64d) of the hydraulic brake system (S1) connected to a master brake cylinder (50) by means of at least one brake circuit (62a, 62b); moving at least one sealing element (22) to a sealing position with respect to at least one connecting channel (54) of the master brake cylinder (50) to a brake medium reservoir (52) of the hydraulic brake system; determining a target delivery variable (32) for at least one brake medium delivery element (30, 88a, 88 ' a, 88b, 90) of the hydraulic brake system for delivering a brake medium volume between at least one store volume (100) of the hydraulic brake system and a volume of the at least one brake circuit external to the store taking into consideration the received specification (14) (S3); and controlling the at least one brake medium delivery element (30, 88a, 88 ' a, 88b, 90) according to the determined target delivery variable (32) (S4). The invention further relates to a control device by means of which the method is performed.
摘要:
The invention relates to a device for carrying out a wheel slip control. Said device comprises at least one inlet valve and one outlet valve for controlling the pressure in at least one wheel brake cylinder. The invention is characterized in that at least one of the inlet valves or outlet valves is configured as an absolute pressure valve.