Patent application number | Description | Published |
20080290725 | Hydraulic Braking System For A Land Craft - A hydraulic brake system for a land vehicle, having a master cylinder, which is actuable by the driver by means of a pedal directly or via a brake booster disposed downstream of the pedal, for generating brake pressure in two brake circuits, each of which comprises two wheel brakes, wherein a hydraulic connection between the master cylinder and the wheel brakes is to be established or blocked by valve arrangements in dependence upon trigger signals from an electronic control unit in order to implement normal braking operations brought about directly by the driver or braking operations influenced by the electronic control unit in dependence upon measured variables, which are supplied to the electronic control unit and reflect the vehicle behaviour and/or the driver request, in that the brake pressure characteristic in the wheel brakes is varied by activating the valve arrangements associated therewith, wherein the electronic control unit is devised and programmed in such a way that, in order to set a brake pressure characteristic required for a specific vehicle behaviour, it supplies trigger signals, by means of which the setting of a respective brake pressure characteristic in the two brake circuits in predefined pressure stages (delta-p) is staggered in terms of time by a substantially predefined time stage (delta-t). | 11-27-2008 |
20090222185 | Method and system for controlling states of travel of a land craft - Method and system for controlling driving conditions of a land vehicle, with which, if understeering and oversteering driving conditions exist at the same time, measures for generating braking forces and/or driving forces which counteract the understeering driving condition, and measures for controlling braking forces and/or driving forces which counteract the oversteering driving condition are carried out at the same time. | 09-03-2009 |
20090273231 | METHOD AND CONTROL DEVICE FOR STOPPING A MOTOR VEHICLE WITHOUT JOLTING - A method of stopping a motor vehicle without jolting is described, which is characterized in that a sum of the hydraulic fluid pressures generated by a foot-force-actuable brake system and acting upon the braking devices of the motor vehicle during the stopping operation is reduced in a driver-independent manner by 30% to 70% in dependence upon a variable that is related to the vehicle velocity. | 11-05-2009 |
20090299597 | Pressure-controlled hydraulic brake system for a land craft - Hydraulic brake system for a land vehicle comprising a control unit ECU that is devised such that it supplies control signals ECU for controlling automatic braking operations of the brake system, a master cylinder, which has an output side, for generating brake pressure under the control of a driver, a first brake circuit I comprising a first controllable pump, which has an output side, for generating brake pressure in the first brake circuit I under the control of the control unit ECU, and a first valve arrangement having an input side, which is fluidically connected to the output side of the master cylinder, and an output side, which is fluidically connected to the output side of the first pump, wherein the first valve arrangement has an open operating state, in which the input side and the output side of the first valve arrangement are fluidically connected, and a closed operating state, in which the fluid connection between the input side and the output side of the first valve arrangement is interrupted, and method of controlling such a brake system, in which brake system and method during an automatic braking operation the first valve arrangement is opened and closed in such a way that a predetermined pressure is adjusted at the output side of the first valve arrangement. | 12-03-2009 |
20090306870 | Antilock Brake System For A Land Craft - Hydraulic brake system and method for controlling a hydraulic brake system for a land craft, in which a quantity of hydraulic fluid delivered to wheel brakes during pressure build-up phases in antilock braking mode is limited so that substantially no hydraulic fluid thereof can flow to a master cylinder. | 12-10-2009 |
20090306871 | Compensation of reduced braking effect of a hydraulic brake system for a land craft - The invention relates to a hydraulic brake system and a method for controlling a hydraulic brake system for a land vehicle having a predetermined holding capacity for hydraulic fluid and at least one wheel brake. The invention is characterized by detecting if a current holding capacity of the brake system has increased in relation to the predetermined holding capacity and, if so, by feeding hydraulic fluid to the at least one wheel brake in a controlled manner and an amount corresponding at least to the increase in capacity. | 12-10-2009 |
20090319118 | Electronic Stabilty Program for a Land Vehicle - The invention concerns an electronic vehicle dynamics regulation system for a land vehicle, which system is set up for steering and braking intervention, and with which a sensor arrangement is associated, which sensor arrangement, for a steering intervention device and for a braking system which builds up braking forces independently of or in addition to the driver, captures the yaw angular velocity and/or the transverse acceleration and feeds them to the steering intervention device and braking system. | 12-24-2009 |
20100033009 | Method and Device for Tightening a Hydraulic Parking Brake - A method and a device for tightening a hydraulic parking brake are disclosed. In the method, a tightening force is generated in a first step by creating a hydraulic pressure in a parking brake circuit. To this end, a pressure generating unit driven by an electric motor is used. In a subsequent step, at least one motor-related parameter which permits a conclusion about the hydraulic pressure prevailing in the parking brake circuit is detected. Subsequently, an activation of a tightening force assistance device takes place depending on the detected motor-related parameter and without the necessity of providing a pressure sensor. | 02-11-2010 |
20100045098 | Devices and methods for hydraulic brake systems for land craft - Device and method for a hydraulic brake system of a land vehicle in order to block a brake circuit of the brake system with regard to a supply of brake pressure generated by a driver, to establish a hydraulic connection between the output side of a wheel brake and the input side of a controllable pump and to generate a predetermined brake pressure at the input side of the wheel brake by means of the pump. | 02-25-2010 |
20110037310 | Technology for the Electronic Brake Force Distribution in a Vehicle Brake System Equipped with a Hydraulic Brake Servo - The invention relates to a technology for effecting electronic brake force distribution in a vehicle brake system, which is equipped with a hydraulic brake boosting, comprising detecting a state requiring an electronic brake boosting and a limiting of the brake pressure generation of the hydraulic brake boosting according to the electronic brake boosting. | 02-17-2011 |
20110042171 | Procedure for Actuating a Hydraulic Parking Brake - A procedure for actuating a parking brake is described, the parking brake comprising a brake piston which is received in a hydraulic chamber and is displaceable within the hydraulic chamber by means of a hydraulic actuator on the one hand and a mechanical actuator on the other. During operation of the parking brake the mechanical actuator is activated in a first step in order to displace the brake piston in the hydraulic chamber in such a way that a volume of a hydraulic fluid contained in the hydraulic chamber is increased. At a subsequent time the hydraulic actuator is activated in order to build up or increase a clamping force of the parking brake. The hydraulically generated or increased clamping force is then maintained by means of the mechanical actuator. | 02-24-2011 |
20110178688 | Method and Device for Hydraulic Brake Boosting - A technique for boosting hydraulic brake pressure in a hydraulic motor vehicle brake system is proposed, wherein a first pressure component of a brake pressure in the brake system is generated in a driver-controlled manner. A method in this respect comprises the steps of acquiring a deceleration value that indicates a deceleration of the vehicle and generating an additional second pressure component as a function of the deceleration value. | 07-21-2011 |
20130205881 | Sensor Module for a Master Cylinder - A sensor module for use with a master cylinder of a brake system is described, wherein the master cylinder has an input-side activation element and an underpressure region for communicating with an underpressure brake booster. The sensor module comprises an underpressure sensor for detecting an underpressure in the underpressure region of the master cylinder as well as at least one further sensor for detecting a signal transmitter which is rigidly coupled to the activation element. The underpressure sensor and the at least one further sensor are accommodated in a housing of the sensor module. An opening in the housing permits communication between the underpressure sensor and the underpressure region of the master cylinder. | 08-15-2013 |
20130207453 | TECHNIQUE FOR OPERATING A BRAKE SYSTEM IN A M-SPLIT SITUATION - Proposed is a technique for operating a hydraulic motor vehicle brake system in an operating situation which requires the formation of a hydraulic pressure difference at opposite wheel brakes of a vehicle axle. Here, each wheel brake is assigned a first slip regulating valve device for decoupling the respective wheel brake from a hydraulic pressure generator, and a second slip regulating valve device for dissipating hydraulic pressure at the respective wheel brake. A method implementation of this technique comprises the steps of building up a hydraulic pressure at the opposite wheel brakes during the course of a braking process, detecting a requirement for forming a hydraulic pressure difference at the opposite wheel brakes, actuating one or more of the slip regulating valve devices assigned to the opposite wheel brakes so as to form the hydraulic pressure difference by virtue of different hydraulic pressures being set at the opposite wheel brakes, and, in reaction to a driver demand, increasing the hydraulic pressure at the opposite wheel brakes, including the wheel brake at which a relatively low hydraulic pressure is to be set, while maintaining the hydraulic pressure difference by transferring hydraulic fluid from the hydraulic pressure generator via the first slip regulating valve devices to the opposite wheel brakes. | 08-15-2013 |
20130226424 | METHOD OF OPERATING AN ELECTRICALLY CONTROLLABLE BRAKE SYSTEM AND BRAKE SYSTEM WHICH IS OPERATED ACCORDING TO THE METHOD - A method for operating an electrically controllable brake system for a motor vehicle having at least one electrically actuated valve arrangement for setting a pressure difference between a second brake pressure and a first brake pressure, wherein in a first time interval a predetermined first pressure difference is set and an associated first power consumption value of the pump is identified; in a second time interval a predetermined second pressure difference is set and an associated second power consumption value of the pump is identified; a correction value is obtained from the first power consumption value and the second power consumption value; the correction value is taken into account for setting a set-point value for the pressure difference. | 08-29-2013 |
20140144223 | Sensor Module for a Master Cylinder - A sensor assembly for use with a master cylinder is described. The master cylinder comprises an input-side activation element to which a signal transmitter element is coupled. The sensor module comprises a travel sensor for sensing travel carried out by the activation element, and a position sensor for sensing when a predefined position of the activation element is reached. | 05-29-2014 |
20140144731 | Vehicle Brake System for a Motor Vehicle and Method for Actuating the Vehicle Brake System - A vehicle brake system having a hydraulically actuatable disc brake device which has an electromechanical operating device for activating a parking brake function, wherein the vehicle brake system has a hydraulic circuit with a hydraulic pressure source and also has activatable hydraulic functional elements in order to hydraulically actuate the disc brake device in accordance with a service braking action by a driver or an automatic activation, wherein the vehicle brake system also has a control device in order to actuate the electromechanical operating device in accordance with a parking braking action by the driver or an automatic activation of the parking brake function. Here, to avoid residual slippage torques, it is provided that the hydraulic circuit can be actuated by means of the control device such that, upon the triggering of the parking brake function through actuation of the electromechanical operating device, a hydraulic pressure is built up in the disc brake device, which hydraulic pressure is large enough to elastically deform hydraulic seal elements in the disc brake device corresponding to an elastic deformation during a service braking operation. | 05-29-2014 |