Hydraulic vehicle brake system

A hydraulic vehicle brake system, comprising;

• at least one brake pedal;
• a pedal-travel simulator;
• and
• at least one hydraulically operable wheel-brake unit, having a switching valve between the brake pedal and the pedal-travel simulator, the switching valve being adjustable between a first switching position in which the brake pedal is connected to the pedal-travel simulator and decoupled from the wheel-brake unit, and a second switching position in which the brake pedal is decoupled from the pedal-travel simulator and the brake pedal is connected to the wheel-brake unit, wherein in the first switching position, a pressure-supply unit is connectable at the same time via an adjustable valve to the wheel-brake unit.

A vehicle or a commercial vehicle, comprising:

• a vehicle brake system including:
• at least one brake pedal;
• a pedal-travel simulator;
• and
• at least one hydraulically operable wheel-brake unit, having a switching valve between the brake pedal and the pedal-travel simulator, the switching valve being adjustable between a first switching position in which the brake pedal is connected to the pedal-travel simulator and decoupled from the wheel-brake unit, and a second switching position in which the brake pedal is decoupled from the pedal-travel simulator and the brake pedal is connected to the wheel-brake unit, wherein in the first switching position, a pressure-supply unit is connectable at the same time via an adjustable valve to the wheel-brake unit.

A regulator/controller, comprising:

• a regulating/control unit to control adjustable components of a vehicle brake system;
• wherein the vehicle brake system includes:
• at least one brake pedal;
• a pedal-travel simulator;
• and
• at least one hydraulically operable wheel-brake unit, having a switching valve between the brake pedal and the pedal-travel simulator, the switching valve being adjustable between a first switching position in which the brake pedal is connected to the pedal-travel simulator and decoupled from the wheel-brake unit, and a second switching position in which the brake pedal is decoupled from the pedal-travel simulator and the brake pedal is connected to the wheel-brake unit, wherein in the first switching position, a pressure-supply unit is connectable at the same time via an adjustable valve to the wheel-brake unit.

A method for operating a vehicle brake system, the method comprising:

• ascertaining an incipient lock of a wheel to realize an antilock braking system;
• and
• reducing a brake-pressure level at an assigned wheel-brake unit by closing an inlet valve and opening an outlet valve;
• wherein the vehicle brake system includes:
• at least one brake pedal;
• a pedal-travel simulator;
• and
• at least one hydraulically operable wheel-brake unit, having a switching valve between the brake pedal and the pedal-travel simulator, the switching valve being adjustable between a first switching position in which the brake pedal is connected to the pedal-travel simulator and decoupled from the wheel-brake unit, and a second switching position in which the brake pedal is decoupled from the pedal-travel simulator and the brake pedal is connected to the wheel-brake unit, wherein in the first switching position, a pressure-supply unit is connectable at the same time via an adjustable valve to the wheel-brake unit.

A method for operating a vehicle brake system, the method comprising:

• ascertaining, to realize an electronic stability program, a rotation of the vehicle about a vertical axis and comparing it to a driver command, determined from steering-angle sensors and rotational-speed sensors;
• and
• stabilizing, in the event of a deviation, the vehicle by opening or closing inlet valves and outlet valves at at least one wheel-brake unit;
• wherein the vehicle brake system includes:
• at least one brake pedal;
• a pedal-travel simulator;
• and
• at least one hydraulically operable wheel-brake unit, having a switching valve between the brake pedal and the pedal-travel simulator, the switching valve being adjustable between a first switching position in which the brake pedal is connected to the pedal-travel simulator and decoupled from the wheel-brake unit, and a second switching position in which the brake pedal is decoupled from the pedal-travel simulator and the brake pedal is connected to the wheel-brake unit, wherein in the first switching position, a pressure-supply unit is connectable at the same time via an adjustable valve to the wheel-brake unit.

A method for operating a vehicle brake system, the method comprising:

• braking at least one wheel-brake unit in a trailer of the vehicle via a brake fluid in a pressure-supply unit;
• wherein the vehicle brake system includes:
• at least one brake pedal;
• a pedal-travel simulator;
• and
• at least one hydraulically operable wheel-brake unit, having a switching valve between the brake pedal and the pedal-travel simulator, the switching valve being adjustable between a first switching position in which the brake pedal is connected to the pedal-travel simulator and decoupled from the wheel-brake unit, and a second switching position in which the brake pedal is decoupled from the pedal-travel simulator and the brake pedal is connected to the wheel-brake unit, wherein in the first switching position, a pressure-supply unit is connectable at the same time via an adjustable valve to the wheel-brake unit.