Patents by Inventor Georg Roll
Georg Roll has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9108600Abstract: The invention relates to a method and a device for performing open-loop or closed-loop control of the driving stability of a vehicle and for avoiding collisions with an object located in the traffic lane. The invention also relates to a closed-loop driving stability controller. The method according to aspects of the invention comprises: determining based on environmental signals whether a critical situation in terms of driving dynamics, in particular an imminent collision, exists, calculating an avoidance path if a critical situation in terms of driving dynamics exists, determining based on a plurality of input variables pressures for individual brakes of the vehicle, and activating preparatory measures of the driving dynamics regulator, in particular dynamic switching over of closed-loop control parameters if the critical situation in terms of driving dynamics exists. The device and the closed-loop driving stability controller are suitable for carrying out the method.Type: GrantFiled: April 29, 2010Date of Patent: August 18, 2015Assignee: Continental Teves AG & Co. oHGInventors: Bernd Hartmann, Alfred Eckert, Georg Roll, Stefan Fritz
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Publication number: 20150061854Abstract: 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.Type: ApplicationFiled: March 20, 2013Publication date: March 5, 2015Applicant: Continental Teves AG & Co. OHGInventors: Stefan Drumm, Steffen Linkenbach, Marco Besier, Jürgen Böhm, Georg Roll
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Patent number: 8788172Abstract: A method for controlling an electro-hydraulic braking system for motor vehicles, including providing an antilock control function, and a further brake pressure control function which can be activated in a “brake-by-wire” mode. A pressurization device, activated by an electronic control unit can be connected to hydraulically actuated wheel brakes through at least one pressure regulating valve. The pressurization device having a cylinder-piston arrangement with a chamber, the piston of which can be displaced relative to a rest position by an electromechanical actuator. A set pressure value is determined for each wheel brake activating the cylinder-piston arrangement such that a predetermined pre-pressure, which is determined from the set pressure values, is set in the chamber by displacement of the piston.Type: GrantFiled: May 31, 2011Date of Patent: July 22, 2014Assignee: Continental Teves AG & Co. OHGInventors: Jurgen Böhm, Georg Roll
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Patent number: 8746419Abstract: A method for operating a braking system in a motor vehicle having at least two wheel brakes (54, 56), each of which can be activated by an electromechanical actuator of the self-locking type. Each wheel brake having a locking device for implementing a parking brake functionality, in which the locking device and respective electromechanical actuator is actuated and locked by the locking device when a parking brake function is carried out. A first method step is carried out in which the at least two actuators are actuated in succession and a second method step is carried out in which it is checked whether the at least two actuators have achieved respectively predefined brake application force. In the event of the at least two actuators having achieved the respectively predefined brake application force, the at least two actuators are locked in a third method step.Type: GrantFiled: March 26, 2010Date of Patent: June 10, 2014Assignee: Continental Teves AG & Co. OHGInventors: Georg Roll, Jochen Leideck
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Patent number: 8483925Abstract: A device for determining a driving state of a two-axle motor vehicle, which driving state is formed from the driving situation of the motor vehicle and the state of the underlying surface, wherein output signals from vehicle on-board sensors are evaluated in order to determine the driving situation and wherein a routine for determining and/or estimating the friction value of the underlying surface is provided in order to determine the state of the underlying surface. Also disclosed is a method for operating a combined vehicle brake system, in particular for motor vehicles, having hydraulically actuable wheel brakes at a front axle and having electromechanically actuable wheel brakes at a rear axle, wherein the vehicle wheels assigned to the rear axle can be driven at least at times by an electric motor which can be operated as a generator for the recuperation of braking energy.Type: GrantFiled: November 28, 2007Date of Patent: July 9, 2013Assignee: Continental Teves AG & Co. oHGInventors: Georg Roll, Jochen Leideck, Peter Cisarz, Jens Jaeger, Paul Linhoff
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Publication number: 20130119752Abstract: 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.Type: ApplicationFiled: July 13, 2011Publication date: May 16, 2013Applicant: Continental Teve AG & Co. oHGInventors: Georg Roll, Jurgen Bohm, Jens Jager
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Publication number: 20130103280Abstract: A method for determining a vehicle reference speed (VREF) in a brake system of amotorized single-track vehicle (201), of a type having an anti-lock control system (203). The slip control (204) can be carried out at one wheel (VR) of the motor vehicle depending on the vehicle reference speed (VREF). A sensor (202) for measuring the wheel speed (v) is arranged on this slip-controllable wheel (VR) and comprises the steps of forming a first wheel speed signal (vfilt—gradlim) by low-pass filtering of the measured wheel speed (v). Wherein the negative gradient of the first wheel speed signal (vfilt—gradlim) is limited to a predetermined gradient limit value (?vmax—n/T), and that the first wheel speed signal (vfilt—gradlim) is used as a wheel-specific vehicle reference speed (VREF, 3, 42, 62, 102, 110, 122, 123, 142) for slip control of the wheel (VR).Type: ApplicationFiled: May 11, 2011Publication date: April 25, 2013Applicant: Continental Teve AG & Co.oHGInventors: Georg Roll, Hans-Georg Ihrig, Dirk Wetzel
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Publication number: 20130080016Abstract: A method for controlling an electro-hydraulic braking system for motor vehicles, including providing an antilock control function, and a further brake pressure control function which can be activated in a “brake-by-wire” mode. A pressurization device, activated by an electronic control unit can be connected to hydraulically actuated wheel brakes through at least one pressure regulating valve. The pressurization device having a cylinder-piston arrangement with a chamber, the piston of which can be displaced relative to a rest position by an electromechanical actuator. A set pressure value is determined for each wheel brake activating the cylinder-piston arrangement such that a predetermined pre-pressure, which is determined from the set pressure values, is set in the chamber by displacement of the piston.Type: ApplicationFiled: May 31, 2011Publication date: March 28, 2013Applicant: Continental Teve AG & Co. oHGInventors: Jurgen Bohn, Georg Roll
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Publication number: 20120065861Abstract: The invention relates to a method and a device for performing open-loop or closed-loop control of the driving stability of a vehicle and for avoiding collisions with an object which is located in the traffic lane. The invention also relates to a closed-loop driving stability controller. The method according to aspects of the invention comprises: determining based on environmental signals whether a critical situation in terms of driving dynamics, in particular an imminent collision, exists, calculating an avoidance path if a critical situation in terms of driving dynamics exists, determining based on a plurality of input variables pressures for individual brakes of the vehicle, and activating preparatory measures of the driving dynamics regulator, in particular dynamic switching over of closed-loop control parameters if the critical situation in terms of driving dynamics exists. The device and the closed-loop driving stability controller are suitable for carrying out the method.Type: ApplicationFiled: April 29, 2010Publication date: March 15, 2012Applicant: Continental Teves AG & Co. oHGInventors: Bernd Hartmann, Alfred Eckert, Georg Roll, Stefan Fritz
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Patent number: 7860623Abstract: A process for increasing the stability of a vehicle upon acceleration on a roadway with a non-homogenous coefficient of friction, whereby a drive wheel is acted on by a braking force on a side with a low coefficient of friction by means of a drive slip regulation. A value (pASR) is determined which corresponds to the braking force (FB,ASR) set by the drive slip regulation (ASR). The value determined (pASR) is used for the determination of a disrupting yaw momentum (MZ), and a control portion (??Z) of a supplemental steering angle (??) is determined in dependence on the disrupting yaw momentum (MZ). An apparatus for the implementation of the process is also provided.Type: GrantFiled: March 15, 2005Date of Patent: December 28, 2010Assignee: Continental Teves AG & Co. oHGInventors: Urs Bauer, Georg Roll, Schahrad Schafiyha, Stephan Capellaro, Michael Gille, Matthias Muntu
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Publication number: 20100030444Abstract: A device for determining a driving state of a two-axle motor vehicle, which driving state is formed from the driving situation of the motor vehicle and the state of the underlying surface, wherein output signals from vehicle on-board sensors are evaluated in order to determine the driving situation and wherein a routine for determining and/or estimating the friction value of the underlying surface is provided in order to determine the state of the underlying surface.Type: ApplicationFiled: November 28, 2007Publication date: February 4, 2010Applicant: Continental Teves Ag & Co. oHGInventors: Georg Roll, Jochen Leideck, Peter Cisarz, Jens Jaeger, Paul Linhoff
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Patent number: 7431133Abstract: A method for actuating an electromechanical parking brake device for a brake that can be actuated by an electromechanical actuator comprised of an electric motor and of a reduction gear connected downstream of the electric motor and provided for converting a rotational motion into a translatory motion. In order to guarantee that the electromechanical parking brake device works reliably in all operating states without using a tension force sensor, the method determines and stores, during the actuation of a parking brake device, a mean value of the torque of the electric motor necessary for generating the application force of the brake corresponding to the parking brake actuation and simultaneously determines the actuator position and actuates the electric motor at later points of time in such a way that it generates this torque multiplied by a correction factor k?=>1 so that the exerted tension force is maintained or increased.Type: GrantFiled: July 28, 2003Date of Patent: October 7, 2008Assignee: Continental Teves AG & Co. oHGInventors: Christof Maron, Georg Roll
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Publication number: 20080147273Abstract: A process for increasing the stability of a vehicle upon acceleration on a roadway with a non-homogenous coefficient of friction, whereby a drive wheel is acted on by a braking force on a side with a low coefficient of friction by means of a drive slip regulation. A value (pASR) is determined which corresponds to the braking force (FB,ASR) set by the drive slip regulation (ASR). The value determined (pASR) is used for the determination of a disrupting yaw momentum (MZ), and a control portion (??Z) of a supplemental steering angle (??) is determined in dependence on the disrupting yaw momentum (MZ). An apparatus for the implementation of the process is also provided.Type: ApplicationFiled: March 15, 2005Publication date: June 19, 2008Inventors: Urs Bauer, Georg Roll, Schahrad Schafiyha, Stephan Capellaro, Michael Gille, Matthias Muntu
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Publication number: 20070278853Abstract: Disclosed is a motorcycle brake system in which, during brake slip control, the pressure buildup in the front-wheel brake circuit (2) is determined depending on the switching position of the inlet and outlet valves (21, 22) by the brake fluid volume which is available in the master brake cylinder (7) and can be displaced exclusively manually into the front-wheel brake circuit (2); and the brake fluid volume provided in the master brake cylinder (7) is monitored in order to prevent exhaustion of the brake fluid volume.Type: ApplicationFiled: January 7, 2005Publication date: December 6, 2007Inventors: Ronald Bayer, Peter Rieth, Johann Jungbecker, Georg Roll
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Publication number: 20060131113Abstract: The invention relates to a method for actuating an electromechanical parking brake device for a brake that can be actuated by means of an electromechanical actuator, in which the actuator is comprised of an electric motor and of a reduction gear connected downstream of the electric motor and being provided for converting a rotational motion into a translatory motion, the electromechanical parking brake being provided in the form of a locking mechanism which can prevent the rotational motion of the actuator in the direction of release and which can be released again by further application.Type: ApplicationFiled: July 28, 2003Publication date: June 22, 2006Inventors: Maron Christof, Georg Roll
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Patent number: 7016778Abstract: The invention relates to a method for controlling a motor vehicle, in particular a traction-slip control system (TCS), wherein a diagonal axle twist is detected and evaluated as a regulating variable.Type: GrantFiled: February 28, 2000Date of Patent: March 21, 2006Assignee: Continental Teves, AG & Co. oHGInventors: Norbert Ehmer, Georg Roll, Lothar Kienle, Bernd-Uwe Hartmann, Steffen Ritz, Frank Haller
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Publication number: 20050234620Abstract: The invention relates to a method for controlling and adjusting digitally or analogically adjustable shock absorbers, preferably in a two-axle road vehicle where the shock absorbers are controlled according to the situation by means of a control signal such that the road performance of the vehicle is improved when understeering or oversteering occurs. To improve the dynamics of movement of a vehicle in any driving situation, it is proposed according to the invention, to determine phase magnitudes, from which the phases of the control signals is calculated, and, in the case of a driving situation with a tendency to sway, to determine a moment in time, as a function of at least the magnitudes which describe the rotation of the vehicle about the vertical axis, when a correct phase control of the shock absorbers of the vehicle is carried out to increase the steerability when understeering occurs and to increase the driving stability when oversteering occurs.Type: ApplicationFiled: September 4, 2003Publication date: October 20, 2005Applicant: Continental Teves AG & Co. oHGInventors: Georg Roll, Steffen Troster
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Patent number: 6954691Abstract: A method for the online determination of values of driving dynamics for a motor vehicle. To improve the quality of the control of a motor vehicle and to reduce the demands placed on the driver, the invention discloses a driving dynamics control including the (1) estimated output quantities ?m in dependence on determined or estimated input quantities u and predetermined or predicted vehicle state variables {circumflex over (x)} and optionally further quantities, (2) comparing the estimated output quantities ?m with measured output quantities ym, and (3) determining the estimated driving dynamics quantities {circumflex over (x)}(tk/tk) in dependence on the measurement result and, as the case may be, further criteria.Type: GrantFiled: April 11, 2001Date of Patent: October 11, 2005Assignee: Continental Teves AG & Co. oHGInventors: Georg Roll, Ulrich Lüders, Rainer Oehler, Thomas Raste, Hubertus Raitz Von Frentz
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Patent number: 6742851Abstract: A detection device for detecting braking of a vehicle during cornering on a road surface where the coefficient of friction of the road surface on a wheel on the outside of a curve is lower than on a wheel on the inside of the curve includes a comparison device for comparing the brake force or the brake force reduction of at least one wheel on the outside of a curve with the brake force or the brake force reduction of at least one wheel on the inside of the curve, and a device for generating a detection signal or initiating appropriate measures when the brake force of at least one wheel on the outside of a curve is lower or reduced to a greater degree than the brake force of at least one wheel on the inside of the curve. A device for influencing yaw torques has a so-called detection device and a reduction device which reduces the brake force in a brake of a wheel on the inside of a curve.Type: GrantFiled: April 28, 2000Date of Patent: June 1, 2004Assignee: Continental Teves AG & Co. OhGInventors: Jürgen Woywod, Ralph Gronau, Georg Roll, Dirk Waldbauer
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Patent number: 6701243Abstract: The present invention relates to a method and a device for controlling traction slip, wherein a variable defining the wheel behavior on at least one of the driven wheels is determined, and control states such as increase brake pressure, decrease brake pressure, or maintain brake pressure are controlled in dependence on this variable, and the change-over between the control states, such as increase brake pressure, decrease brake pressure, or maintain brake pressure, or switch on or off traction slip control are regulated. In order to improve the control, at least one further variable which represents the running stability of the engine, is included in the control of the control states and/or the switch-over between the control states.Type: GrantFiled: May 2, 2002Date of Patent: March 2, 2004Assignee: Continental Teves AG & Co., oHGInventors: Georg Roll, Frank Haller