Patent application number | Description | Published |
20080296084 | Vehicle Steering System and Method For Controlling a Vehicle Steering System - Disclosed is a vehicle steering system for motor vehicles with a steering handle operable by the driver and connected to steerable vehicle wheels in terms of effect in order to determine a direction of driving. The vehicle steering system includes a hydraulic working cylinder having two directions of effect, as well as a hydraulic pressure source, which applies hydraulic pressure to a valve assembly. The valve assembly controls the magnitude of the hydraulic pressure conveyed to the working cylinder and determines the direction of effect of the working cylinder. The valve assembly includes a slide valve, which is actuated by an actuator and associated with which are a pressure sensor and a travel sensor, whose signal outlets are connected to a pressure controller or a travel controller in terms of signals. The output quantity of the pressure controller and the travel controller can be sent to an evaluating circuit, which links the output quantities to weighting factors in order to determine a controlled quantity of the actuator. | 12-04-2008 |
20100057291 | System and Method for Adjustment of a Steer Angle of a Wheel of a Motor Vehicle - A system for adjusting a wheel lock angle of a wheel of a motor vehicle, in particular of a rear wheel, wherein at least one wheel guide member, by means of which a wheel carrier of the wheel is connected to a vehicle body, wherein the wheel carrier can pivot about a rotational axis which runs substantially parallel to the plane of the wheel and the wheel guide member is coupled to the wheel carrier at a distance from the rotational axis, and wherein the length of the wheel guide member can be adjusted by an actuator, wherein at least one actuator is driven by a motor and at least one control unit, and the control unit includes a computer unit with a memory and a communication interface, and the control unit transmits and receives data via the communication interface by means of at least one communication bus. | 03-04-2010 |
20100241314 | STEERING DEVICE FOR ADJUSTING A WHEEL STEERING ANGLE - A steering device for adjusting a wheel steering angle of a wheel of a motor vehicle is disclosed, which steering device has a wheel guide member and a steering control unit. The steering control unit includes a basic steering function and an actuator travel control system for adjusting travel of the wheel guide member on the basis of a steering angle setpoint value. | 09-23-2010 |
20100242469 | BRAKE ACTUATING UNIT - A brake actuating unit for motor vehicles includes a brake master cylinder, a booster stage which is connected in front of the brake master cylinder, and a drive unit for driving the booster stage. In order to make comfortable braking operations possible, there is provision for the transmission both of the actuating force and of the boosting force to the primary piston of the brake master cylinder to take place by a force transmission module which has at least one elastic element and is arranged in the primary piston. | 09-30-2010 |
20130080017 | Method and Control Circuit for Controlling a Braking System for Motor Vehicles - A method for controlling a motor vehicle electrohydraulic braking system. The method being activatable in a “brake-by-wire” operating mode, having a pressure supply device ( | 03-28-2013 |
20130119752 | Method for Controlling an Electrohydraulic Braking System and Electrohydraulic Braking System - A method and system for controlling an electrohydraulic braking system for a motor vehicle having an antilock braking control function and an electrically controllable pressure generating device having a cylinder-piston arrangement having a hydraulic pressure chamber and a piston displaceable by an electromechanical actuator so that a predetermined pressure can be set in the chamber, and having a number of hydraulically wheel brakes connected to the hydraulic pressure chamber by an electrically actuatable inlet valve and to a pressure medium reservoir by means of an electrically actuatable outlet valve. The cylinder-piston arrangement is actuated in case of antilock controlling at all wheel brake for setting an individual wheel target pressure at each wheel brake, such that the pressure in the hydraulic pressure chamber is set to the greatest wheel target pressure. | 05-16-2013 |
20130304345 | Method and Device for Controlling an Electrohydraulic Brake System - A system and device and a method for controlling an electrohydraulic brake system of a motor vehicle especially adapted for brake by wire applications. The embodiments carryout position control of an actuator of an electronically activatable pressure supply unit based on the actuator position actual value and on and actuator position reference value which is determined on the basis of a pressure reference value. | 11-14-2013 |
20140303865 | Method for Operating a Brake System, and Brake System - The invention relates to a method for operating a brake system, in particular for motor vehicles, having an electrically controllable pressure supplying device for hydraulically actuating at least one wheel brake. The pressure supplying device includes a cylinder-piston arrangement with a hydraulic pressure chamber. The piston of the cylinder-piston arrangement being movable by an electromechanical actuator in order to generate a specificable target pressure in the hydraulic pressure chamber. An actuator torque and an actuator position of the electromechanical actuator are ascertained, and a pressure value for the pressure in the hydraulic pressure chamber is determined using the actuator toque and the actuator position taking into consideration a pressure model. | 10-09-2014 |
20140368027 | METHOD FOR OPERATING A BRAKE SYSTEM FOR MOTOR VEHICLES, AND BRAKE SYSTEM - A system and method for operating a brake system for motor vehicles, includes a master brake cylinder actuated by a brake pedal and separably connected to at least one hydraulically acutuatable wheel brake by at least one brake circuit, a hydraulically operable pedal travel simulator is connectable to the master brake cylinder, an electrically controllable pressure provision apparatus is separably connected to the brake circuit, and an electronic open-loop and closed-loop control unit. Upon brake pedal actuation, a pressure of the pressure provision apparatus is applied to the brake circuit in a first operating mode and the pressure of the master brake cylinder is applied to the brake circuit in a second operating mode. In the event of transition from the second operating mode to the first operating mode while the brake pedal is actuated, the actuation travel of the brake pedal is adjusted by electronic open-loop or closed-loop control. | 12-18-2014 |
20150061854 | METHOD FOR PROVIDING HAPTIC INFORMATION TO THE DRIVER OF A MOTOR VEHICLE - The invention relates to a method for providing haptic information to the driver of a motor vehicle, equipped with a brake-by-wire brake system, about the operating state of the brake system, in which method the brake pedal characteristic is generated by a pedal travel simulator, in the form of a functional relationship between the brake pedal opposing force and the brake pedal travel, and is modified as a function of an operating state. In order to provide the driver with the haptic information channel via which electronically controlled information can be communicated to the driver during braking, without the impression of a defect arising, the invention proposes that a basic brake pedal characteristic is generated by a passive simulator spring which assigns pedal travel, on which pedal return travel transporting the haptic information is superimposed, to a given pedal force in an unchanging, constant relationship. | 03-05-2015 |