Robert Boschgmbh

Jochen Mayer

Herbert Vollert

Willi Nagel

Armin Verhagen

Frank Overzier

Reinhard Weiberle

Karl-Heinz Willmann

Manfred Gerdes

Steffen Mutschler

Bernd Goetzelmann

Jens Kolarsky

Timo Jahnz

Ulrich Lenzgeiger

Joerg Riethmueller

Niccolo Haegele

Frank Bender

Patrick Glasbrenner

A hydrostatic axial piston pump has adjustable swept volume and is configured for fluidic connection to a hydraulic motor of a hydrostatic propulsion drive in a hydraulic circuit. The hydrostatic axial piston pump includes an adjusting unit configured to adjust the swept volume. The adjusting unit has an actuating cylinder with a first actuating pressure chamber, in which a first actuating pressure can be set via a first pressure reducing valve. The first actuating pressure is dependent on a first current at a first electromagnet of the first pressure reducing valve. An electronic control device is configured to store a model of the first current in a manner which is dependent on a requested speed.

Axial piston pump for a hydrostatic propulsion drive, hydrostatic propulsion drive with the axial piston pump, and method for control

A hydrostatic traction drive includes a first hydraulic machine that is coupled to a drive unit. The first hydraulic machine is hydraulically arranged in a hydraulic circuit with a second hydraulic machine. The second hydraulic machine has a drive shaft that is connected in a rotationally fixed fashion to a lockable differential. The traction drive has a control unit that is configured so as to control at least one measure for traction control as a function of a rotational speed of the second hydraulic machine. The at least one measure includes one or more of a measure for detecting a loss of traction and a measure for overcoming the loss of traction. A method for controlling the traction drive includes eliminating a loss of traction of the traction drive with use of the control unit as a function of the rotational speed of the second hydraulic machine.

Hydrostatic traction drive and method for controlling the hydrostatic traction drive

A wake-up device for a brake system component of a vehicle includes a magnet that is arranged to be set, via a transmission device, in rotational motion jointly with a shifting of a driver brake force transmission component, thereby effecting a relative motion between the magnet and an electrical conductor. The relative motion induces an induction voltage. An output device outputs the induction voltage or a wake-up signal generated based on the induction voltage to the brake system component, thereby controlling the brake system component to transition from a first energy use mode to a second energy use mode. A method includes controlling the brake system component to transition from the first energy use mode to the second energy use mode by outputting the induction voltage or wake-up signal generated as described above.

Wake-up device for a brake system component of a vehicle and method for exciting at least one brake system component of a vehicle

A primary piston assembly for a master brake cylinder of a braking system of a vehicle, including a first primary piston component having a first piston element to which a driver braking force is transmittable in such a way that a pressure chamber volume of a pressure chamber of a master brake cylinder of the braking system which is fillable with liquid is reducible by moving the first piston element with the aid of the driver braking force, and a second primary piston component having a second piston element to which the first braking assisting force is transmittable in such a way that the pressure chamber volume of the pressure chamber is reducible by moving the second piston element with the aid of the first braking assisting force.

Primary piston assembly for a master brake cylinder of a braking system of a vehicle, manufacturing method for a braking unit, and method for operating a braking unit

A brake booster device is provided for a braking system of a vehicle having an input rod component, which may be situated relative to a brake actuation element in such a way that the input rod component is adjustable with the aid of a driver brake force exerted on the brake actuation element, and having a guide body with a bore formed therein, into which the input rod component at least partially protrudes, an initial spring being compressibly arranged between an inner wall of the bore in the guide body and a widened intermediate section of the input rod component, and the initial spring being constrained with the aid of a captive spring mount.

Brake booster device for a braking system of a vehicle and a manufacturing method for a brake booster device for a braking system of a vehicle

A brake actuation sensor device is described for a brake system of a vehicle having a strain and/or compression gage which is reversibly variable in its extension, whereby at least one electrical property is able to be changed, and an evaluation device, by which at least one electrical variable is able to be ascertained with respect to the changeable electrical property, and, taking into account the at least one ascertained electrical variable, an evaluation variable is able to be determined with respect to a brake actuating force, the strain and/or compression gage being additionally developed so that the strain and/or compression gage is able to be situated in direct or indirect contact with a brake booster housing device in such a way that a force exerted on the brake booster housing device causes a mechanical stress in the strain and/or compression gage. Furthermore, a method is described for mounting a brake actuation sensor device of a brake system of a vehicle.

Brake actuation sensor device for a vehicle brake system and method for mounting a brake actuation sensor device on a vehicle brake system

A braking system, in particular for a motor vehicle, including a braking force device having a brake booster for boosting a braking force and a brake pressure supply device for providing brake pressure with the aid of a brake medium, a braking device which may be acted on by pressure by the brake medium with the aid of the brake pressure supply device, and at least one sensor which is designed to detect a distance differential of a displacement means for the displacement of a volume of the brake medium of the braking force device. The braking force device is designed to ascertain the volume of brake medium to be displaced on the basis of the detected distance differential.

Braking system and method for regulating a pressure of a brake medium in a braking system

A brake booster coupling device includes: a braking piston, an input piston displaceable by an operation of a brake input element from its starting position by a driver braking distance, a force transmission between the input piston displaced by a driver braking distance below a predefined threshold value and the braking piston is suppressed, and a booster piston displaceable with the aid of the brake booster drive such that the braking piston, which contacts the booster piston, is displaceable with the aid of the brake booster drive from a non-braking position into a braking position; a contact element displaceable by a displacement of the braking piston from the non-braking position into the braking position such that a first contact surface of the contact element contacts a second contact surface of the input piston in such a way that a driver brake force is transmittable to the braking piston.

Brake booster coupling device

A power-assisted braking system for a vehicle is described, including: a brake master cylinder having a chamber which is hydraulically connected to a wheel brake cylinder for braking a wheel of the vehicle; a hydraulic actuator which activates a piston of the brake master cylinder in order to pressurize the hydraulic fluid in the chamber; a low-pressure accumulator which stores the hydraulic fluid under pressure, and the actuator for activating the piston of the brake master cylinder; a pump which supplies the hydraulic fluid from the tank to the low-pressure accumulator; and a drive device which drives the pump. A method for controlling a power-assisted braking system is also described.

Power-assisted braking system for a vehicle and method for controlling the power-assisted braking system

A pressure transmission device for a power-assisted braking system of a vehicle; at its inlet, the pressure transmission device being connectible in a hydraulically operative manner to a master brake cylinder of the power-assisted braking system, and at its outlet, the pressure transmission device being connectible in a hydraulically operative manner to a wheel brake cylinder of the power-assisted braking system; the pressure transmission device including an accumulator and a linkage, which transmits a pressure difference between the inlet and the outlet to the accumulator and stores it in this.

Pressure transmission device for a vehicle, power-assisted braking system and method

A method for transferring brake fluid into a wheel brake cylinder of a brake system of a vehicle includes: controlling a switchover valve, via which a brake circuit having the wheel brake cylinder is connected to a main brake cylinder, into a closed state; subsequently reducing a booster force of a brake force booster, which is exerted upon an adjustable piston of the main brake cylinder; controlling a high-pressure switchover valve to a partially opened state after the reduction of the booster force of the brake force booster; and sucking in brake fluid via the partially opened, high-pressure switchover valve and pumping the brake fluid into the at least one wheel brake cylinder.

Control device and method for transferring brake fluid into at least one wheel brake cylinder of a brake system of a vehicle

A hydraulic main brake cylinder, preferably having an electro-mechanical brake booster for a brake assembly of a vehicle is disclosed. The main brake cylinder is provided with two pressure rod pistons, preferably nesting within each other, one of which is actuated by muscle power, and the other one is actuated by the brake booster. Furthermore, an energy store is provided, which stores energy when the main brake cylinder is released and then transferred to the main brake cylinder upon the actuation thereof, thus supporting the operation of the main brake cylinder.

Hydraulic main brake cylinder

A method for operating a braking system of a vehicle which is equipped with a plunger device, including the increasing of a brake pressure in at least one brake circuit of the braking system by transferring a brake fluid volume from the plunger device into the at least one brake circuit of the braking system, the method including: comparing an actual pressure variable to a predefined reference pressure variable with regard to an actual pressure present at least in one subsection of the braking system before the brake pressure is increased; and reducing at least a pre-pressure in the braking system prior to transferring the brake fluid volume from the plunger device into the at least one brake circuit if the actual pressure variable exceeds the reference pressure variable. A control unit is also described for a braking system of a vehicle which is equipped with a plunger device.

Method for operating a braking system of a vehicle which is equipped with a plunger device and a control unit for a braking system of a vehicle which is equipped with a plunger device

A controllable brake booster and a method and a device for controlling the brake booster are disclosed. The pedal force that a driver must apply in order to convey an input element of the brake booster into an actuating position or to retain the element in an actuating position is adjusted by operating the brake booster.

Brake booster, and method and device for the operation thereof

The invention relates to an electromechanical brake booster with an electric motor and a helical gearing. The brake booster is used for coupling an auxiliary force via a driver into a piston rod. The invention proposes connecting a spindle of the helical gearing elastically via a spring element to the piston rod such that, in the event of rapid actuation of the brake, the helical gearing and a rotor of the electric motor do not have to be accelerated entirely muscle power. The muscle power required for actuating a brake is reduced as a result in the event of a rapid actuation of the brake.

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Giengen an der Brenz, Germany

Jochen Mayer