Patent application number | Description | Published |
20110017554 | AUTOMATIC PARKING BRAKE HAVING A SLIP CONTROLLER - The invention relates to an automatic parking brake for motor vehicles having a plurality of brake actuators ( | 01-27-2011 |
20110181224 | METHOD FOR MEASURING AN OPERATING VARIABLE AT MULTIPLE ELECTRIC MOTORS OF AN AUTOMATIC PARKING BRAKE - A method for measuring at least one operating variable at multiple electric motors of an automatic parking brake with the aid of a sensor system, the signals generated by the sensor system being processed by a processing device. To minimize the influence of signal interferences, the at least one operating variable is not measured or is not further processed as long as none of the electric motors is activated. | 07-28-2011 |
20110224880 | Method for setting the clamping force exerted by a parking brake - In a method for setting the clamping force exerted by a parking brake, which force is applied by an electric motor-based braking apparatus and, if necessary, by an additional braking apparatus, during an actuation phase of the electric motor-based braking apparatus, the motor resistance and the motor constant are determined from the present motor voltage, the present motor current, and the present motor rotation speed, and the clamping force achievable by the electric motor-based braking apparatus is ascertained therefrom. If the electric motor-based braking force does not reach a required target clamping force, an additional braking force is generated by the additional braking apparatus. | 09-15-2011 |
20120205202 | METHOD FOR SETTING THE CLAMPING FORCE OF A HYDRAULICALLY SUPPORTED ELECTRIC MOTOR-DRIVEN PARKING BRAKE - A method for setting the clamping force acting on a wheel brake, a part of the clamping force being provided using an electromechanical brake device and simultaneously another part of the clamping force being provided using a hydraulic brake device. During an application procedure, the power consumption of the electric motor-driven brake device is regulated to an essentially constant value in an operating phase (phase 4), in which both brake devices simultaneously exert force, so as to set the clamping force of the parking brake very precisely. | 08-16-2012 |
20130001027 | Method for operating a parking brake of a vehicle - A method for operating a parking brake of a vehicle, in particular of a motor vehicle, which parking brake operates in the superposition mode, the brake force of the parking brake being applicable by two different force-generating actuators mutually supporting one another in the superposition mode. It is provided that the force-generating, in particular pressure-generating, actuator is activated for support even before the superposition. | 01-03-2013 |
20130190970 | Method for securing an electrically operated parking brake - A method for securing an electrically operated parking brake, characterized by the following steps: monitoring an operating variable which is relevant for the proper functioning of the parking brake; ascertaining/determining whether the operating variable exceeds a predefined threshold value; and prompting the driver to carry out a certain action as a function of the value of the operating variable, the action including the engagement of the gear or the operation of the foot service brake. Also described is a control unit for carrying out the described method. | 07-25-2013 |
20130211684 | METHOD, REGULATING AND CONTROL APPLIANCE, AND PARKING BRAKE COMPRISING SUCH A REGULATING AND CONTROL APPLIANCE, FOR ADJUSTING A CLAMPING FORCE EXERTED BY A PARKING BRAKE - In a method for adjusting the clamping force exerted by a parking brake, which force is applied by an electric-motor braking apparatus that encompasses an electric braking motor and power-supply and control units, and as necessary by an additional braking apparatus, an equivalent resistance is ascertained from a measurement of current and voltage and is used as the basis for calculating the maximum generatable clamping force. | 08-15-2013 |
20130226423 | method for providing the clamping force applied by a parking brake - In a method for providing the clamping force generated by a parking brake, the roadway incline is measured and in the case that the roadway incline exceeds a threshold value, a reengagement process is carried out after a defined time period has elapsed. | 08-29-2013 |
20130226426 | METHOD FOR ADJUSTING THE CLAMPING FORCE EXERTED BY A PARKING BRAKE, REGULATING AND CONTROL APPLIANCE FOR CARRYING OUT SAID METHOD, AND VEHICLE PARKING BRAKE COMPRISING SUCH A CONTROL APPLIANCE - In a method for adjusting the clamping force exerted by a parking brake, which force is applied by an electric-motor braking apparatus and a hydraulic braking apparatus, the electric braking motor impinging upon a brake piston of a hydraulic wheel brake unit of the hydraulic braking apparatus, for the case in which the pre-pressure existing in the hydraulic braking apparatus exceeds a threshold pressure value, an inlet valve in the braking circuit of the hydraulic braking apparatus is closed, and the target braking force is established by actuation of the electric-motor braking apparatus. | 08-29-2013 |
20130226427 | Method for adjusting the clamping force exerted by a parking brake - In a method for adjusting the clamping force exerted by a parking brake, which force is applied by an electric-motor braking apparatus and by a hydraulic braking apparatus, the hydraulic inlet pressure generated by the driver and existing in the hydraulic braking apparatus is utilized to generate a hydraulic clamping force; and for the case in which the hydraulic clamping force is not sufficient to reach a target clamping force, an electric clamping force is generated in supplementary fashion. | 08-29-2013 |
20130231839 | Method for determining a failure in a service or parking brake in a vehicle, regulating or control unit for carrying out the method, and parking brake having such a regulating or control unit - In a method for determining a failure in a service or parking brake having an electromotive and a hydraulic brake device for generating a clamping force, an error is detected in the hydraulic brake device if an electromotive characteristic of the electric brake motor is outside an admissible value range. | 09-05-2013 |
20130338896 | METHOD FOR SETTING THE CLAMPING FORCE APPLIED BY A PARKING BRAKE - In a method for setting the clamping force applied by a parking brake, an electromechanical clamping force portion is set in an electromechanical brake device, and an auxiliary clamping force is set in an auxiliary brake device. A parameter of the electric actuator is regulated to a defined value, while a state variable of the auxiliary brake device, which determines the auxiliary clamping force, is simultaneously set to a setpoint value without feedback control. | 12-19-2013 |
20130345023 | METHOD FOR SECURING A VEHICLE ON A ROLLER DYNAMOMETER - A method for securing a vehicle, whose wheels of one axle are on a dynamometer, against being unintentionally pushed out of the dynamometer during an inspection of the parking brake. In order to avoid endangerment of people who are in the surroundings of the vehicle, it is proposed to ascertain with the aid of a sensor system whether the vehicle is located on a dynamometer and, if this has been determined, to automatically generate a braking torque at a wheel brake of at least one wheel, which is located outside the dynamometer, after a control element of the parking brake has been operated. | 12-26-2013 |
20140076674 | METHOD FOR ADJUSTING A PARKING BRAKE IN A VEHICLE - In a method for adjusting a parking brake, which includes an electromechanical braking device having an electric brake motor, the brake motor is braked upon reaching an end position. | 03-20-2014 |
20140180535 | METHOD FOR MONITORING THE FUNCTION OF A PARKING BRAKE IN A VEHICLE - In a method for monitoring the function of the parking brake in a vehicle, the movement state of the vehicle is monitored after the parking brake has been operated and a warning signal is generated in the case of a vehicle movement. | 06-26-2014 |
20140214296 | AUTOMATIC PARKING BRAKE WITH OPTIMIZED RE-TENSIONING METHOD - A method for re-tensioning an automatic parking brake by an electric motor includes carrying out a re-tensioning process after a predefined time period after the tensioning of the parking brake. The parking brake is driven in the tensioning direction by the electric motor to determine the travel carried out by the parking brake in the tensioning direction and the clamping force exerted by the parking brake during the re-tensioning. The method further includes carrying out a further re-tensioning process after a predefined time if the travel of the parking brake is less than a predefined threshold value and the clamping force in the parking brake is less than a second threshold value. If the travel of the parking brake is greater than a third threshold value or the clamping force exerted by the parking brake is greater than a fourth threshold value, a further re-tensioning process is not carried out. | 07-31-2014 |
20150041257 | METHOD FOR PROVIDING THE APPLICATION FORCE GENERATED BY A PARKING BRAKE - In a method for providing the application force generated by a parking brake, which is at least partially generated by an electromechanical brake device having an electric brake motor, a retensioning process is terminated in the event that (i) the motor current exceeds a limit value or (ii) the rotational speed of the motor drops below a limit value. | 02-12-2015 |
20150066324 | Method for providing the clamping force generated by a parking brake - A method for providing the clamping force generated by an electric brake motor in a parking brake, the clamping force being determined as a function of the motor constants of the brake motor based on instantaneous measured values of the motor current and the motor voltage. | 03-05-2015 |